Leverage existing bash completion

This is a PoC implementation for leveraging existing bash completion

git **<tab>
kubectl **<tab>

.github/FUNDING.yml

@@ -1 +1 @@
-custom: ["https://paypal.me/junegunn", "https://www.buymeacoffee.com/junegunn"]
+github: junegunn

.github/ISSUE_TEMPLATE.md

@@ -1,22 +0,0 @@
-<!-- ISSUES NOT FOLLOWING THIS TEMPLATE WILL BE CLOSED AND DELETED -->
-
-<!-- Check all that apply [x] -->
-
-- [ ] I have read through the manual page (`man fzf`)
-- [ ] I have the latest version of fzf
-- [ ] I have searched through the existing issues
-
-## Info
-
-- OS
-    - [ ] Linux
-    - [ ] Mac OS X
-    - [ ] Windows
-    - [ ] Etc.
-- Shell
-    - [ ] bash
-    - [ ] zsh
-    - [ ] fish
-
-## Problem / Steps to reproduce
-

.github/ISSUE_TEMPLATE/issue_template.yml

@@ -0,0 +1,49 @@
+---
+name: Issue Template
+description: Report a problem or bug related to fzf to help us improve
+
+body:
+  - type: markdown
+    attributes:
+      value: ISSUES NOT FOLLOWING THIS TEMPLATE WILL BE CLOSED AND DELETED
+
+  - type: checkboxes
+    attributes:
+      label: Checklist
+      options:
+        - label: I have read through the manual page (`man fzf`)
+          required: true
+        - label: I have searched through the existing issues
+          required: true
+        - label: For bug reports, I have checked if the bug is reproducible in the latest version of fzf
+          required: false
+
+  - type: input
+    attributes:
+      label: Output of `fzf --version`
+      placeholder: e.g. 0.48.1 (d579e33)
+    validations:
+      required: true
+
+  - type: checkboxes
+    attributes:
+      label: OS
+      options:
+        - label: Linux
+        - label: macOS
+        - label: Windows
+        - label: Etc.
+
+  - type: checkboxes
+    attributes:
+      label: Shell
+      options:
+        - label: bash
+        - label: zsh
+        - label: fish
+
+  - type: textarea
+    attributes:
+      label: Problem / Steps to reproduce
+    validations:
+      required: true

.github/workflows/codeql-analysis.yml

@@ -27,18 +27,18 @@ jobs:
 
     steps:
     - name: Checkout repository
-      uses: actions/checkout@629c2de402a417ea7690ca6ce3f33229e27606a5 # v2
+      uses: actions/checkout@v4
       with:
         fetch-depth: 0
 
     # Initializes the CodeQL tools for scanning.
     - name: Initialize CodeQL
-      uses: github/codeql-action/init@1ed1437484560351c5be56cf73a48a279d116b78
+      uses: github/codeql-action/init@v3
       with:
         languages: ${{ matrix.language }}
 
     - name: Autobuild
-      uses: github/codeql-action/autobuild@1ed1437484560351c5be56cf73a48a279d116b78
+      uses: github/codeql-action/autobuild@v3
 
     - name: Perform CodeQL Analysis
-      uses: github/codeql-action/analyze@1ed1437484560351c5be56cf73a48a279d116b78
+      uses: github/codeql-action/analyze@v3

.github/workflows/depsreview.yaml

@@ -0,0 +1,14 @@
+name: 'Dependency Review'
+on: [pull_request]
+
+permissions:
+  contents: read
+
+jobs:
+  dependency-review:
+    runs-on: ubuntu-latest
+    steps:
+      - name: 'Checkout Repository'
+        uses: actions/checkout@v4
+      - name: 'Dependency Review'
+        uses: actions/dependency-review-action@v4

.github/workflows/linux.yml

@@ -11,29 +11,32 @@ on:
 permissions:
   contents: read
 
+env:
+  LANG: C.UTF-8
+
 jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@629c2de402a417ea7690ca6ce3f33229e27606a5 # v2
+    - uses: actions/checkout@v4
       with:
         fetch-depth: 0
 
     - name: Set up Go
-      uses: actions/setup-go@f6164bd8c8acb4a71fb2791a8b6c4024ff038dab # v2
+      uses: actions/setup-go@v5
       with:
-        go-version: 1.18
+        go-version: "1.20"
 
     - name: Setup Ruby
-      uses: ruby/setup-ruby@ebaea52cb20fea395b0904125276395e37183dac
+      uses: ruby/setup-ruby@v1
       with:
-        ruby-version: 3.0.0
+        ruby-version: 3.1.0
 
     - name: Install packages
       run: sudo apt-get install --yes zsh fish tmux
 
     - name: Install Ruby gems
-      run: sudo gem install --no-document minitest:5.14.2 rubocop:1.0.0 rubocop-minitest:0.10.1 rubocop-performance:1.8.1
+      run: sudo gem install --no-document minitest:5.25.1 rubocop:1.65.0 rubocop-minitest:0.35.1 rubocop-performance:1.21.1
 
     - name: Rubocop
       run: rubocop --require rubocop-minitest --require rubocop-performance
@@ -42,4 +45,4 @@ jobs:
       run: make test
 
     - name: Integration test
-      run: make install && ./install --all && LC_ALL=C tmux new-session -d && ruby test/test_go.rb --verbose
+      run: make install && ./install --all && tmux new-session -d && ruby test/test_go.rb --verbose

.github/workflows/macos.yml

@@ -15,17 +15,17 @@ jobs:
   build:
     runs-on: macos-latest
     steps:
-    - uses: actions/checkout@629c2de402a417ea7690ca6ce3f33229e27606a5 # v2
+    - uses: actions/checkout@v4
       with:
         fetch-depth: 0
 
     - name: Set up Go
-      uses: actions/setup-go@f6164bd8c8acb4a71fb2791a8b6c4024ff038dab # v2
+      uses: actions/setup-go@v5
       with:
-        go-version: 1.18
+        go-version: "1.20"
 
     - name: Setup Ruby
-      uses: ruby/setup-ruby@ebaea52cb20fea395b0904125276395e37183dac
+      uses: ruby/setup-ruby@v1
       with:
         ruby-version: 3.0.0
 

.github/workflows/sponsors.yml

@@ -0,0 +1,24 @@
+---
+name: Generate Sponsors README
+on:
+  workflow_dispatch:
+  schedule:
+    - cron: 0 0 * * 0
+jobs:
+  deploy:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout 🛎️
+        uses: actions/checkout@v4
+
+      - name: Generate Sponsors 💖
+        uses: JamesIves/github-sponsors-readme-action@v1
+        with:
+          token: ${{ secrets.SPONSORS_TOKEN }}
+          file: 'README.md'
+
+      - name: Deploy to GitHub Pages 🚀
+        uses: JamesIves/github-pages-deploy-action@v4
+        with:
+          branch: master
+          folder: '.'

.github/workflows/typos.yml

@@ -0,0 +1,10 @@
+name: "Spell Check"
+on: [pull_request]
+
+jobs:
+  typos:
+    name: Spell Check with Typos
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v4
+    - uses: crate-ci/typos@v1.24.1

.github/workflows/winget.yml

@@ -0,0 +1,14 @@
+name: Publish to Winget
+on:
+  release:
+    types: [released]
+
+jobs:
+  publish:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: vedantmgoyal2009/winget-releaser@v2
+        with:
+          identifier: junegunn.fzf
+          installers-regex: '-windows_(armv7|arm64|amd64)\.zip$'
+          token: ${{ secrets.WINGET_TOKEN }}

.goreleaser.yml

@@ -1,4 +1,5 @@
 ---
+version: 2
 project_name: fzf
 
 before:
@@ -6,64 +7,9 @@ before:
     - go mod download
 
 builds:
-  - id: fzf-macos
-    binary: fzf
-    goos:
-      - darwin
-    goarch:
-      - amd64
-    ldflags:
-      - "-s -w -X main.version={{ .Version }} -X main.revision={{ .ShortCommit }}"
-    hooks:
-      post: |
-        sh -c '
-        cat > /tmp/fzf-gon-amd64.hcl << EOF
-        source = ["./dist/fzf-macos_darwin_amd64/fzf"]
-        bundle_id = "kr.junegunn.fzf"
-        apple_id {
-          username = "junegunn.c@gmail.com"
-          password = "@env:AC_PASSWORD"
-        }
-        sign {
-          application_identity = "Developer ID Application: Junegunn Choi (Y254DRW44Z)"
-        }
-        zip {
-          output_path = "./dist/fzf-{{ .Version }}-darwin_amd64.zip"
-        }
-        EOF
-        gon /tmp/fzf-gon-amd64.hcl
-        '
-
-  - id: fzf-macos-arm
-    binary: fzf
-    goos:
-      - darwin
-    goarch:
-      - arm64
-    ldflags:
-      - "-s -w -X main.version={{ .Version }} -X main.revision={{ .ShortCommit }}"
-    hooks:
-      post: |
-        sh -c '
-        cat > /tmp/fzf-gon-arm64.hcl << EOF
-        source = ["./dist/fzf-macos-arm_darwin_arm64/fzf"]
-        bundle_id = "kr.junegunn.fzf"
-        apple_id {
-          username = "junegunn.c@gmail.com"
-          password = "@env:AC_PASSWORD"
-        }
-        sign {
-          application_identity = "Developer ID Application: Junegunn Choi (Y254DRW44Z)"
-        }
-        zip {
-          output_path = "./dist/fzf-{{ .Version }}-darwin_arm64.zip"
-        }
-        EOF
-        gon /tmp/fzf-gon-arm64.hcl
-        '
-
   - id: fzf
     goos:
+      - darwin
       - linux
       - windows
       - freebsd
@@ -72,10 +18,15 @@ builds:
       - amd64
       - arm
       - arm64
+      - loong64
+      - ppc64le
+      - s390x
     goarm:
       - 5
       - 6
       - 7
+    flags:
+      - -trimpath
     ldflags:
       - "-s -w -X main.version={{ .Version }} -X main.revision={{ .ShortCommit }}"
     ignore:
@@ -88,6 +39,42 @@ builds:
       - goos: openbsd
         goarch: arm64
 
+# .goreleaser.yaml
+notarize:
+  macos:
+    - # Whether this configuration is enabled or not.
+      #
+      # Default: false.
+      # Templates: allowed.
+      enabled: "{{ not .IsSnapshot }}"
+
+      # Before notarizing, we need to sign the binary.
+      # This blocks defines the configuration for doing so.
+      sign:
+        # The .p12 certificate file path or its base64'd contents.
+        certificate: "{{.Env.MACOS_SIGN_P12}}"
+
+        # The password to be used to open the certificate.
+        password: "{{.Env.MACOS_SIGN_PASSWORD}}"
+
+      # Then, we notarize the binaries.
+      notarize:
+        # The issuer ID.
+        # Its the UUID you see when creating the App Store Connect key.
+        issuer_id: "{{.Env.MACOS_NOTARY_ISSUER_ID}}"
+
+        # Key ID.
+        # You can see it in the list of App Store Connect Keys.
+        # It will also be in the ApiKey filename.
+        key_id: "{{.Env.MACOS_NOTARY_KEY_ID}}"
+
+        # The .p8 key file path or its base64'd contents.
+        key: "{{.Env.MACOS_NOTARY_KEY}}"
+
+        # Whether to wait for the notarization to finish.
+        # Not recommended, as it could take a really long time.
+        wait: true
+
 archives:
   - name_template: "{{ .ProjectName }}-{{ .Version }}-{{ .Os }}_{{ .Arch }}{{ if .Arm }}v{{ .Arm }}{{ end }}"
     builds:
@@ -104,12 +91,10 @@ release:
     owner: junegunn
     name: fzf
   prerelease: auto
-  name_template: '{{ .Tag }}'
+  name_template: '{{ .Version }}'
-  extra_files:
-    - glob: ./dist/fzf-*darwin*.zip
 
 snapshot:
-  name_template: "{{ .Tag }}-devel"
+  name_template: "{{ .Version }}-devel"
 
 changelog:
   sort: asc

.rubocop.yml

@@ -6,7 +6,7 @@ Lint/ShadowingOuterLocalVariable:
   Enabled: false
 Style/MethodCallWithArgsParentheses:
   Enabled: true
-  IgnoredMethods:
+  AllowedMethods:
     - assert
     - exit
     - paste
@@ -15,7 +15,7 @@ Style/MethodCallWithArgsParentheses:
     - refute
     - require
     - send_keys
-  IgnoredPatterns:
+  AllowedPatterns:
     - ^assert_
     - ^refute_
 Style/NumericPredicate:
@@ -26,3 +26,7 @@ Style/OptionalBooleanParameter:
   Enabled: false
 Style/WordArray:
   MinSize: 1
+Minitest/AssertEqual:
+  Enabled: false
+Naming/VariableNumber:
+  Enabled: false

.tool-versions

@@ -1 +1 @@
-golang 1.18
+golang 1.20.13

ADVANCED.md

@@ -1,30 +1,35 @@
 Advanced fzf examples
 ======================
 
-*(Last update: 2021/05/22)*
+* *Last update: 2024/06/24*
+* *Requires fzf 0.54.0 or later*
+
+---
 
 <!-- vim-markdown-toc GFM -->
 
 * [Introduction](#introduction)
-* [Screen Layout](#screen-layout)
+* [Display modes](#display-modes)
-  * [`--height`](#--height)
+    * [`--height`](#--height)
-  * [`fzf-tmux`](#fzf-tmux)
+    * [`--tmux`](#--tmux)
-    * [Popup window support](#popup-window-support)
 * [Dynamic reloading of the list](#dynamic-reloading-of-the-list)
-  * [Updating the list of processes by pressing CTRL-R](#updating-the-list-of-processes-by-pressing-ctrl-r)
+    * [Updating the list of processes by pressing CTRL-R](#updating-the-list-of-processes-by-pressing-ctrl-r)
-  * [Toggling between data sources](#toggling-between-data-sources)
+    * [Toggling between data sources](#toggling-between-data-sources)
+    * [Toggling with a single key binding](#toggling-with-a-single-key-binding)
 * [Ripgrep integration](#ripgrep-integration)
-  * [Using fzf as the secondary filter](#using-fzf-as-the-secondary-filter)
+    * [Using fzf as the secondary filter](#using-fzf-as-the-secondary-filter)
-  * [Using fzf as interative Ripgrep launcher](#using-fzf-as-interative-ripgrep-launcher)
+    * [Using fzf as interactive Ripgrep launcher](#using-fzf-as-interactive-ripgrep-launcher)
-  * [Switching to fzf-only search mode](#switching-to-fzf-only-search-mode)
+    * [Switching to fzf-only search mode](#switching-to-fzf-only-search-mode)
-  * [Switching between Ripgrep mode and fzf mode](#switching-between-ripgrep-mode-and-fzf-mode)
+    * [Switching between Ripgrep mode and fzf mode](#switching-between-ripgrep-mode-and-fzf-mode)
+    * [Switching between Ripgrep mode and fzf mode using a single key binding](#switching-between-ripgrep-mode-and-fzf-mode-using-a-single-key-binding)
 * [Log tailing](#log-tailing)
 * [Key bindings for git objects](#key-bindings-for-git-objects)
-  * [Files listed in `git status`](#files-listed-in-git-status)
+    * [Files listed in `git status`](#files-listed-in-git-status)
-  * [Branches](#branches)
+    * [Branches](#branches)
-  * [Commit hashes](#commit-hashes)
+    * [Commit hashes](#commit-hashes)
 * [Color themes](#color-themes)
-  * [Generating fzf color theme from Vim color schemes](#generating-fzf-color-theme-from-vim-color-schemes)
+    * [fzf Theme Playground](#fzf-theme-playground)
+    * [Generating fzf color theme from Vim color schemes](#generating-fzf-color-theme-from-vim-color-schemes)
 
 <!-- vim-markdown-toc -->
 
@@ -57,7 +62,7 @@ learn its wide variety of features.
 This document will guide you through some examples that will familiarize you
 with the advanced features of fzf.
 
-Screen Layout
+Display modes
 -------------
 
 ### `--height`
@@ -98,56 +103,55 @@ Define `$FZF_DEFAULT_OPTS` like so:
 export FZF_DEFAULT_OPTS="--height=40% --layout=reverse --info=inline --border --margin=1 --padding=1"
 ```
 
-### `fzf-tmux`
+### `--tmux`
 
-Before fzf had `--height` option, we would open fzf in a tmux split pane not
+(Requires tmux 3.3 or later)
-to take up the whole screen. This is done using `fzf-tmux` script.
+
+If you're using tmux, you can open fzf in a tmux popup using `--tmux` option.
 
 ```sh
-# Open fzf on a tmux split pane below the current pane.
+# Open fzf in a tmux popup at the center of the screen with 70% width and height
-# Takes the same set of options.
+fzf --tmux 70%
-fzf-tmux --layout=reverse
 ```
 
-![image](https://user-images.githubusercontent.com/700826/113379973-f1cc6500-93b5-11eb-8860-c9bc4498aadf.png)
+![image](https://github.com/junegunn/fzf/assets/700826/9c365405-c700-49b2-8985-60d822ed4cff)
 
-The limitation of `fzf-tmux` is that it only works when you're on tmux unlike
+`--tmux` option is silently ignored if you're not on tmux. So if you're trying
-`--height` option. But the advantage of it is that it's more flexible.
+to avoid opening fzf in fullscreen, try specifying both `--height` and `--tmux`.
-(See `man fzf-tmux` for available options.)
 
 ```sh
-# On the right (50%)
+# --tmux is specified later so it takes precedence over --height when on tmux.
-fzf-tmux -r
+# If you're not on tmux, --tmux is ignored and --height is used instead.
-
+fzf  --height 70% --tmux 70%
-# On the left (30%)
-fzf-tmux -l30%
-
-# Above the cursor
-fzf-tmux -u30%
 ```
 
-![image](https://user-images.githubusercontent.com/700826/113379983-fa24a000-93b5-11eb-93eb-8a3d39b2f163.png)
+You can also specify the position, width, and height of the popup window in
+the following format:
 
-![image](https://user-images.githubusercontent.com/700826/113380001-0577cb80-93b6-11eb-95d0-2ba453866882.png)
+* `[center|top|bottom|left|right][,SIZE[%]][,SIZE[%]]`
-
-![image](https://user-images.githubusercontent.com/700826/113380040-1d4f4f80-93b6-11eb-9bef-737fb120aafe.png)
-
-#### Popup window support
-
-But here's the really cool part; tmux 3.2 added support for popup windows. So
-you can open fzf in a popup window, which is quite useful if you frequently
-use split panes.
 
 ```sh
-# Open tmux in a tmux popup window (default size: 50% of the screen)
+# 100% width and 60% height
-fzf-tmux -p
+fzf --tmux 100%,60% --border horizontal
-
-# 80% width, 60% height
-fzf-tmux -p 80%,60%
 ```
 
-![image](https://user-images.githubusercontent.com/700826/113380106-4a9bfd80-93b6-11eb-8cee-aeb1c4ce1a1f.png)
+![image](https://github.com/junegunn/fzf/assets/700826/f80d3514-d69f-42f2-a8de-a392a562bfcf)
 
+```sh
+# On the right (50% width)
+fzf --tmux right
+```
+
+![image](https://github.com/junegunn/fzf/assets/700826/4033ade4-7efa-421b-a3fb-a430d197098a)
+
+```sh
+# On the left (40% width and 70% height)
+fzf --tmux left,40%,70%
+```
+
+![image](https://github.com/junegunn/fzf/assets/700826/efe43881-2bf0-49ea-ab2e-1377f778cd52)
+
+> [!TIP]
 > You might also want to check out my tmux plugins which support this popup
 > window layout.
 >
@@ -205,6 +209,30 @@ find * | fzf --prompt 'All> ' \
 
 ![image](https://user-images.githubusercontent.com/700826/113465072-46321c00-946c-11eb-9b6f-cda3951df579.png)
 
+### Toggling with a single key binding
+
+The above example uses two different key bindings to toggle between two modes,
+but can we just use a single key binding?
+
+To make a key binding behave differently each time it is pressed, we need:
+
+1. a way to store the current state. i.e. "which mode are we in?"
+2. and a way to dynamically perform different actions depending on the state.
+
+The following example shows how to 1. store the current mode in the prompt
+string, 2. and use this information (`$FZF_PROMPT`) to determine which
+actions to perform using the `transform` action.
+
+```sh
+fd --type file |
+  fzf --prompt 'Files> ' \
+      --header 'CTRL-T: Switch between Files/Directories' \
+      --bind 'ctrl-t:transform:[[ ! $FZF_PROMPT =~ Files ]] &&
+              echo "change-prompt(Files> )+reload(fd --type file)" ||
+              echo "change-prompt(Directories> )+reload(fd --type directory)"' \
+      --preview '[[ $FZF_PROMPT =~ Files ]] && bat --color=always {} || tree -C {}'
+```
+
 Ripgrep integration
 -------------------
 
@@ -236,15 +264,13 @@ file called `rfv`.
 # 1. Search for text in files using Ripgrep
 # 2. Interactively narrow down the list using fzf
 # 3. Open the file in Vim
-IFS=: read -ra selected < <(
+rg --color=always --line-number --no-heading --smart-case "${*:-}" |
-  rg --color=always --line-number --no-heading --smart-case "${*:-}" |
+  fzf --ansi \
-    fzf --ansi \
+      --color "hl:-1:underline,hl+:-1:underline:reverse" \
-        --color "hl:-1:underline,hl+:-1:underline:reverse" \
+      --delimiter : \
-        --delimiter : \
+      --preview 'bat --color=always {1} --highlight-line {2}' \
-        --preview 'bat --color=always {1} --highlight-line {2}' \
+      --preview-window 'up,60%,border-bottom,+{2}+3/3,~3' \
-        --preview-window 'up,60%,border-bottom,+{2}+3/3,~3'
+      --bind 'enter:become(vim {1} +{2})'
-)
-[ -n "${selected[0]}" ] && vim "${selected[0]}" "+${selected[1]}"
 ```
 
 And run it with an initial query string.
@@ -307,10 +333,14 @@ I know it's a lot to digest, let's try to break down the code.
       position in the window
     - `~3` makes the top three lines fixed header so that they are always
       visible regardless of the scroll offset
-- Once we selected a line, we open the file with `vim` (`vim
+- Instead of using shell script to process the final output of fzf, we use
-  "${selected[0]}"`) and move the cursor to the line (`+${selected[1]}`).
+  `become(...)` action which was added in [fzf 0.38.0][0.38.0] to turn fzf
+  into a new process that opens the file with `vim` (`vim {1}`) and move the
+  cursor to the line (`+{2}`).
 
-### Using fzf as interative Ripgrep launcher
+[0.38.0]: https://github.com/junegunn/fzf/blob/master/CHANGELOG.md#0380
+
+### Using fzf as interactive Ripgrep launcher
 
 We have learned that we can bind `reload` action to a key (e.g.
 `--bind=ctrl-r:execute(ps -ef)`). In the next example, we are going to **bind
@@ -331,25 +361,20 @@ projects, and it will free up memory as you narrow down the results.
 # 3. Open the file in Vim
 RG_PREFIX="rg --column --line-number --no-heading --color=always --smart-case "
 INITIAL_QUERY="${*:-}"
-IFS=: read -ra selected < <(
+fzf --ansi --disabled --query "$INITIAL_QUERY" \
-  FZF_DEFAULT_COMMAND="$RG_PREFIX $(printf %q "$INITIAL_QUERY")" \
+    --bind "start:reload:$RG_PREFIX {q}" \
-  fzf --ansi \
+    --bind "change:reload:sleep 0.1; $RG_PREFIX {q} || true" \
-      --disabled --query "$INITIAL_QUERY" \
+    --delimiter : \
-      --bind "change:reload:sleep 0.1; $RG_PREFIX {q} || true" \
+    --preview 'bat --color=always {1} --highlight-line {2}' \
-      --delimiter : \
+    --preview-window 'up,60%,border-bottom,+{2}+3/3,~3' \
-      --preview 'bat --color=always {1} --highlight-line {2}' \
+    --bind 'enter:become(vim {1} +{2})'
-      --preview-window 'up,60%,border-bottom,+{2}+3/3,~3'
-)
-[ -n "${selected[0]}" ] && vim "${selected[0]}" "+${selected[1]}"
 ```
 
 ![image](https://user-images.githubusercontent.com/700826/113684212-f9ff0a00-96ff-11eb-8737-7bb571d320cc.png)
 
-- Instead of starting fzf in `rg ... | fzf` form, we start fzf without an
+- Instead of starting fzf in the usual `rg ... | fzf` form, we make it start
-  explicit input, but with a custom `FZF_DEFAULT_COMMAND` variable. This way
+  the initial Ripgrep process immediately via `start:reload` binding for the
-  fzf can kill the initial Ripgrep process it starts with the initial query.
+  consistency of the code.
-  Otherwise, the initial Ripgrep process will keep consuming system resources
-  even after `reload` is triggered.
 - Filtering is no longer a responsibility of fzf; hence `--disabled`
 - `{q}` in the reload command evaluates to the query string on fzf prompt.
 - `sleep 0.1` in the reload command is for "debouncing". This small delay will
@@ -358,8 +383,6 @@ IFS=: read -ra selected < <(
 
 ### Switching to fzf-only search mode
 
-*(Requires fzf 0.27.1 or above)*
-
 In the previous example, we lost fuzzy matching capability as we completely
 delegated search functionality to Ripgrep. But we can dynamically switch to
 fzf-only search mode by *"unbinding"* `reload` action from `change` event.
@@ -375,19 +398,16 @@ fzf-only search mode by *"unbinding"* `reload` action from `change` event.
 # 3. Open the file in Vim
 RG_PREFIX="rg --column --line-number --no-heading --color=always --smart-case "
 INITIAL_QUERY="${*:-}"
-IFS=: read -ra selected < <(
+fzf --ansi --disabled --query "$INITIAL_QUERY" \
-  FZF_DEFAULT_COMMAND="$RG_PREFIX $(printf %q "$INITIAL_QUERY")" \
+    --bind "start:reload:$RG_PREFIX {q}" \
-  fzf --ansi \
+    --bind "change:reload:sleep 0.1; $RG_PREFIX {q} || true" \
-      --color "hl:-1:underline,hl+:-1:underline:reverse" \
+    --bind "alt-enter:unbind(change,alt-enter)+change-prompt(2. fzf> )+enable-search+clear-query" \
-      --disabled --query "$INITIAL_QUERY" \
+    --color "hl:-1:underline,hl+:-1:underline:reverse" \
-      --bind "change:reload:sleep 0.1; $RG_PREFIX {q} || true" \
+    --prompt '1. ripgrep> ' \
-      --bind "alt-enter:unbind(change,alt-enter)+change-prompt(2. fzf> )+enable-search+clear-query" \
+    --delimiter : \
-      --prompt '1. ripgrep> ' \
+    --preview 'bat --color=always {1} --highlight-line {2}' \
-      --delimiter : \
+    --preview-window 'up,60%,border-bottom,+{2}+3/3,~3' \
-      --preview 'bat --color=always {1} --highlight-line {2}' \
+    --bind 'enter:become(vim {1} +{2})'
-      --preview-window 'up,60%,border-bottom,+{2}+3/3,~3'
-)
-[ -n "${selected[0]}" ] && vim "${selected[0]}" "+${selected[1]}"
 ```
 
 * Phase 1. Filtering with Ripgrep
@@ -408,10 +428,8 @@ IFS=: read -ra selected < <(
 
 ### Switching between Ripgrep mode and fzf mode
 
-*(Requires fzf 0.30.0 or above)*
+[fzf 0.30.0][0.30.0] added `rebind` action so we can "rebind" the bindings
-
+that were previously "unbound" via `unbind`.
-fzf 0.30.0 added `rebind` action so we can "rebind" the bindings that were
-previously "unbound" via `unbind`.
 
 This is an improved version of the previous example that allows us to switch
 between Ripgrep launcher mode and fzf-only filtering mode via CTRL-R and
@@ -421,23 +439,65 @@ CTRL-F.
 #!/usr/bin/env bash
 
 # Switch between Ripgrep launcher mode (CTRL-R) and fzf filtering mode (CTRL-F)
+rm -f /tmp/rg-fzf-{r,f}
 RG_PREFIX="rg --column --line-number --no-heading --color=always --smart-case "
 INITIAL_QUERY="${*:-}"
-IFS=: read -ra selected < <(
+fzf --ansi --disabled --query "$INITIAL_QUERY" \
-  FZF_DEFAULT_COMMAND="$RG_PREFIX $(printf %q "$INITIAL_QUERY")" \
+    --bind "start:reload($RG_PREFIX {q})+unbind(ctrl-r)" \
-  fzf --ansi \
+    --bind "change:reload:sleep 0.1; $RG_PREFIX {q} || true" \
-      --color "hl:-1:underline,hl+:-1:underline:reverse" \
+    --bind "ctrl-f:unbind(change,ctrl-f)+change-prompt(2. fzf> )+enable-search+rebind(ctrl-r)+transform-query(echo {q} > /tmp/rg-fzf-r; cat /tmp/rg-fzf-f)" \
-      --disabled --query "$INITIAL_QUERY" \
+    --bind "ctrl-r:unbind(ctrl-r)+change-prompt(1. ripgrep> )+disable-search+reload($RG_PREFIX {q} || true)+rebind(change,ctrl-f)+transform-query(echo {q} > /tmp/rg-fzf-f; cat /tmp/rg-fzf-r)" \
-      --bind "change:reload:sleep 0.1; $RG_PREFIX {q} || true" \
+    --color "hl:-1:underline,hl+:-1:underline:reverse" \
-      --bind "ctrl-f:unbind(change,ctrl-f)+change-prompt(2. fzf> )+enable-search+clear-query+rebind(ctrl-r)" \
+    --prompt '1. ripgrep> ' \
-      --bind "ctrl-r:unbind(ctrl-r)+change-prompt(1. ripgrep> )+disable-search+reload($RG_PREFIX {q} || true)+rebind(change,ctrl-f)" \
+    --delimiter : \
-      --prompt '1. Ripgrep> ' \
+    --header '╱ CTRL-R (ripgrep mode) ╱ CTRL-F (fzf mode) ╱' \
-      --delimiter : \
+    --preview 'bat --color=always {1} --highlight-line {2}' \
-      --header '╱ CTRL-R (Ripgrep mode) ╱ CTRL-F (fzf mode) ╱' \
+    --preview-window 'up,60%,border-bottom,+{2}+3/3,~3' \
-      --preview 'bat --color=always {1} --highlight-line {2}' \
+    --bind 'enter:become(vim {1} +{2})'
-      --preview-window 'up,60%,border-bottom,+{2}+3/3,~3'
+```
-)
+
-[ -n "${selected[0]}" ] && vim "${selected[0]}" "+${selected[1]}"
+- To restore the query string when switching between modes, we store the
+  current query in `/tmp/rg-fzf-{r,f}` files and restore the query using
+  `transform-query` action which was added in [fzf 0.36.0][0.36.0].
+- Also note that we unbind `ctrl-r` binding on `start` event which is
+  triggered once when fzf starts.
+
+[0.30.0]: https://github.com/junegunn/fzf/blob/master/CHANGELOG.md#0300
+[0.36.0]: https://github.com/junegunn/fzf/blob/master/CHANGELOG.md#0360
+
+### Switching between Ripgrep mode and fzf mode using a single key binding
+
+In contrast to the previous version, we use just one hotkey to toggle between
+ripgrep and fzf mode. This is achieved by using the `$FZF_PROMPT` as a state
+within the `transform` action, a feature introduced in [fzf 0.45.0][0.45.0]. A
+more detailed explanation of this feature can be found in a previous section -
+[Toggling with a single keybinding](#toggling-with-a-single-key-binding).
+
+[0.45.0]: https://github.com/junegunn/fzf/blob/master/CHANGELOG.md#0450
+
+When using the `transform` action, the placeholder (`\{q}`) should be escaped to
+prevent immediate evaluation.
+
+```sh
+#!/usr/bin/env bash
+
+# Switch between Ripgrep mode and fzf filtering mode (CTRL-T)
+rm -f /tmp/rg-fzf-{r,f}
+RG_PREFIX="rg --column --line-number --no-heading --color=always --smart-case "
+INITIAL_QUERY="${*:-}"
+fzf --ansi --disabled --query "$INITIAL_QUERY" \
+    --bind "start:reload:$RG_PREFIX {q}" \
+    --bind "change:reload:sleep 0.1; $RG_PREFIX {q} || true" \
+    --bind 'ctrl-t:transform:[[ ! $FZF_PROMPT =~ ripgrep ]] &&
+      echo "rebind(change)+change-prompt(1. ripgrep> )+disable-search+transform-query:echo \{q} > /tmp/rg-fzf-f; cat /tmp/rg-fzf-r" ||
+      echo "unbind(change)+change-prompt(2. fzf> )+enable-search+transform-query:echo \{q} > /tmp/rg-fzf-r; cat /tmp/rg-fzf-f"' \
+    --color "hl:-1:underline,hl+:-1:underline:reverse" \
+    --prompt '1. ripgrep> ' \
+    --delimiter : \
+    --header 'CTRL-T: Switch between ripgrep/fzf' \
+    --preview 'bat --color=always {1} --highlight-line {2}' \
+    --preview-window 'up,60%,border-bottom,+{2}+3/3,~3' \
+    --bind 'enter:become(vim {1} +{2})'
 ```
 
 Log tailing
@@ -465,16 +525,17 @@ Kubernetes pods.
 
 ```bash
 pods() {
-  FZF_DEFAULT_COMMAND="kubectl get pods --all-namespaces" \
+  command='kubectl get pods --all-namespaces' fzf \
-    fzf --info=inline --layout=reverse --header-lines=1 \
+    --info=inline --layout=reverse --header-lines=1 \
-        --prompt "$(kubectl config current-context | sed 's/-context$//')> " \
+    --prompt "$(kubectl config current-context | sed 's/-context$//')> " \
-        --header $'╱ Enter (kubectl exec) ╱ CTRL-O (open log in editor) ╱ CTRL-R (reload) ╱\n\n' \
+    --header $'╱ Enter (kubectl exec) ╱ CTRL-O (open log in editor) ╱ CTRL-R (reload) ╱\n\n' \
-        --bind 'ctrl-/:change-preview-window(80%,border-bottom|hidden|)' \
+    --bind 'start:reload:$command' \
-        --bind 'enter:execute:kubectl exec -it --namespace {1} {2} -- bash > /dev/tty' \
+    --bind 'ctrl-r:reload:$command' \
-        --bind 'ctrl-o:execute:${EDITOR:-vim} <(kubectl logs --all-containers --namespace {1} {2}) > /dev/tty' \
+    --bind 'ctrl-/:change-preview-window(80%,border-bottom|hidden|)' \
-        --bind 'ctrl-r:reload:$FZF_DEFAULT_COMMAND' \
+    --bind 'enter:execute:kubectl exec -it --namespace {1} {2} -- bash' \
-        --preview-window up:follow \
+    --bind 'ctrl-o:execute:${EDITOR:-vim} <(kubectl logs --all-containers --namespace {1} {2})' \
-        --preview 'kubectl logs --follow --all-containers --tail=10000 --namespace {1} {2}' "$@"
+    --preview-window up:follow \
+    --preview 'kubectl logs --follow --all-containers --tail=10000 --namespace {1} {2}' "$@"
 }
 ```
 
@@ -487,7 +548,7 @@ pods() {
     - Press enter key on a pod to `kubectl exec` into it
     - Press CTRL-O to open the log in your editor
 - Press CTRL-R to reload the pod list
-- Press CTRL-/ repeatedly to to rotate through a different sets of preview
+- Press CTRL-/ repeatedly to rotate through a different sets of preview
   window options
     1. `80%,border-bottom`
     1. `hidden`
@@ -496,9 +557,17 @@ pods() {
 Key bindings for git objects
 ----------------------------
 
-I have [blogged](https://junegunn.kr/2016/07/fzf-git) about my fzf+git key
+Oftentimes, you want to put the identifiers of various Git object to the
-bindings a few years ago. I'm going to show them here again, because they are
+command-line. For example, it is common to write commands like these:
-seriously useful.
+
+```sh
+git checkout [SOME_COMMIT_HASH or BRANCH or TAG]
+git diff [SOME_COMMIT_HASH or BRANCH or TAG] [SOME_COMMIT_HASH or BRANCH or TAG]
+```
+
+[fzf-git.sh](https://github.com/junegunn/fzf-git.sh) project defines a set of
+fzf-based key bindings for Git objects. I strongly recommend that you check
+them out because they are seriously useful.
 
 ### Files listed in `git status`
 
@@ -518,9 +587,6 @@ seriously useful.
 
 ![image](https://user-images.githubusercontent.com/700826/113473765-91692080-94a6-11eb-8d38-ed4d41f27ac1.png)
 
-
-The full source code can be found [here](https://gist.github.com/junegunn/8b572b8d4b5eddd8b85e5f4d40f17236).
-
 Color themes
 ------------
 
@@ -563,6 +629,12 @@ export FZF_DEFAULT_OPTS='--color=bg+:#293739,bg:#1B1D1E,border:#808080,spinner:#
 
 ![molokai](https://user-images.githubusercontent.com/700826/113475085-8619f300-94ae-11eb-85e4-2766fc3246bf.png)
 
+### fzf Theme Playground
+
+[fzf Theme Playground](https://vitormv.github.io/fzf-themes/) created by
+[Vitor Mello](https://github.com/vitormv) is a webpage where you can
+interactively create fzf themes.
+
 ### Generating fzf color theme from Vim color schemes
 
 The Vim plugin of fzf can generate `--color` option from the current color

BUILD.md

@@ -6,7 +6,7 @@ Build instructions
 
 ### Prerequisites
 
-- Go 1.17 or above
+- Go 1.20 or above
 
 ### Using Makefile
 
@@ -24,24 +24,36 @@ make build
 make release
 ```
 
-> :warning: Makefile uses git commands to determine the version and the
+> [!WARNING]
-> revision information for `fzf --version`. So if you're building fzf from an
+> Makefile uses git commands to determine the version and the revision
+> information for `fzf --version`. So if you're building fzf from an
 > environment where its git information is not available, you have to manually
 > set `$FZF_VERSION` and `$FZF_REVISION`.
 >
 > e.g. `FZF_VERSION=0.24.0 FZF_REVISION=tarball make`
 
+> [!TIP]
+> To build fzf with profiling options enabled, set `TAGS=pprof`
+>
+> ```sh
+> TAGS=pprof make clean install
+> fzf --profile-cpu /tmp/cpu.pprof --profile-mem /tmp/mem.pprof \
+>     --profile-block /tmp/block.pprof --profile-mutex /tmp/mutex.pprof
+> ```
+
 Third-party libraries used
 --------------------------
 
-- [mattn/go-runewidth](https://github.com/mattn/go-runewidth)
+- [rivo/uniseg](https://github.com/rivo/uniseg)
-    - Licensed under [MIT](http://mattn.mit-license.org)
+    - Licensed under [MIT](https://raw.githubusercontent.com/rivo/uniseg/master/LICENSE.txt)
 - [mattn/go-shellwords](https://github.com/mattn/go-shellwords)
     - Licensed under [MIT](http://mattn.mit-license.org)
 - [mattn/go-isatty](https://github.com/mattn/go-isatty)
     - Licensed under [MIT](http://mattn.mit-license.org)
 - [tcell](https://github.com/gdamore/tcell)
     - Licensed under [Apache License 2.0](https://github.com/gdamore/tcell/blob/master/LICENSE)
+- [fastwalk](https://github.com/charlievieth/fastwalk)
+    - Licensed under [MIT](https://raw.githubusercontent.com/charlievieth/fastwalk/master/LICENSE)
 
 License
 -------

Dockerfile

@@ -1,6 +1,6 @@
-FROM archlinux
+FROM ubuntu:24.04
-RUN pacman -Sy && pacman --noconfirm -S awk git tmux zsh fish ruby procps go make gcc
+RUN apt-get update -y && apt install -y git make golang zsh fish ruby tmux
-RUN gem install --no-document -v 5.14.2 minitest
+RUN gem install --no-document -v 5.22.3 minitest
 RUN echo '. /usr/share/bash-completion/completions/git' >> ~/.bashrc
 RUN echo '. ~/.bashrc' >> ~/.bash_profile
 
@@ -8,4 +8,5 @@ RUN echo '. ~/.bashrc' >> ~/.bash_profile
 RUN rm -f /etc/bash.bashrc
 COPY . /fzf
 RUN cd /fzf && make install && ./install --all
+ENV LANG C.UTF-8
 CMD tmux new 'set -o pipefail; ruby /fzf/test/test_go.rb | tee out && touch ok' && cat out && [ -e ok ]

LICENSE

@@ -1,6 +1,6 @@
 The MIT License (MIT)
 
-Copyright (c) 2013-2021 Junegunn Choi
+Copyright (c) 2013-2024 Junegunn Choi
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal

Makefile

@@ -1,34 +1,35 @@
 SHELL          := bash
 GO             ?= go
-GOOS           ?= $(word 1, $(subst /, " ", $(word 4, $(shell go version))))
+GOOS           ?= $(shell $(GO) env GOOS)
 
 MAKEFILE       := $(realpath $(lastword $(MAKEFILE_LIST)))
 ROOT_DIR       := $(shell dirname $(MAKEFILE))
-SOURCES        := $(wildcard *.go src/*.go src/*/*.go) $(MAKEFILE)
+SOURCES        := $(wildcard *.go src/*.go src/*/*.go shell/*sh man/man1/*.1) $(MAKEFILE)
 
 ifdef FZF_VERSION
 VERSION        := $(FZF_VERSION)
 else
-VERSION        := $(shell git describe --abbrev=0 2> /dev/null)
+VERSION        := $(shell git describe --abbrev=0 2> /dev/null | sed "s/^v//")
 endif
 ifeq ($(VERSION),)
 $(error Not on git repository; cannot determine $$FZF_VERSION)
 endif
-VERSION_TRIM   := $(shell sed "s/-.*//" <<< $(VERSION))
+VERSION_TRIM   := $(shell sed "s/^v//; s/-.*//" <<< $(VERSION))
 VERSION_REGEX  := $(subst .,\.,$(VERSION_TRIM))
 
 ifdef FZF_REVISION
 REVISION       := $(FZF_REVISION)
 else
-REVISION       := $(shell git log -n 1 --pretty=format:%h -- $(SOURCES) 2> /dev/null)
+REVISION       := $(shell git log -n 1 --pretty=format:%h --abbrev=8 -- $(SOURCES) 2> /dev/null)
 endif
 ifeq ($(REVISION),)
 $(error Not on git repository; cannot determine $$FZF_REVISION)
 endif
-BUILD_FLAGS    := -a -ldflags "-s -w -X main.version=$(VERSION) -X main.revision=$(REVISION)" -tags "$(TAGS)"
+BUILD_FLAGS    := -a -ldflags "-s -w -X main.version=$(VERSION) -X main.revision=$(REVISION)" -tags "$(TAGS)" -trimpath
 
 BINARY32       := fzf-$(GOOS)_386
 BINARY64       := fzf-$(GOOS)_amd64
+BINARYS390     := fzf-$(GOOS)_s390x
 BINARYARM5     := fzf-$(GOOS)_arm5
 BINARYARM6     := fzf-$(GOOS)_arm6
 BINARYARM7     := fzf-$(GOOS)_arm7
@@ -43,6 +44,8 @@ ifeq ($(UNAME_M),x86_64)
 	BINARY := $(BINARY64)
 else ifeq ($(UNAME_M),amd64)
 	BINARY := $(BINARY64)
+else ifeq ($(UNAME_M),s390x)
+	BINARY := $(BINARYS390)
 else ifeq ($(UNAME_M),i686)
 	BINARY := $(BINARY32)
 else ifeq ($(UNAME_M),i386)
@@ -54,7 +57,9 @@ else ifeq ($(UNAME_M),armv6l)
 else ifeq ($(UNAME_M),armv7l)
 	BINARY := $(BINARYARM7)
 else ifeq ($(UNAME_M),armv8l)
-	BINARY := $(BINARYARM8)
+	# armv8l is always 32-bit and should implement the armv7 ISA, so
+	# just use the same filename as for armv7.
+	BINARY := $(BINARYARM7)
 else ifeq ($(UNAME_M),arm64)
 	BINARY := $(BINARYARM8)
 else ifeq ($(UNAME_M),aarch64)
@@ -72,7 +77,6 @@ endif
 all: target/$(BINARY)
 
 test: $(SOURCES)
-	[ -z "$$(gofmt -s -d src)" ] || (gofmt -s -d src; exit 1)
 	SHELL=/bin/sh GOOS= $(GO) test -v -tags "$(TAGS)" \
 				github.com/junegunn/fzf/src \
 				github.com/junegunn/fzf/src/algo \
@@ -82,12 +86,23 @@ test: $(SOURCES)
 bench:
 	cd src && SHELL=/bin/sh GOOS= $(GO) test -v -tags "$(TAGS)" -run=Bench -bench=. -benchmem
 
+lint: $(SOURCES) test/test_go.rb
+	[ -z "$$(gofmt -s -d src)" ] || (gofmt -s -d src; exit 1)
+	rubocop --require rubocop-minitest --require rubocop-performance
+
 install: bin/fzf
 
+generate:
+	PATH=$(PATH):$(GOPATH)/bin $(GO) generate ./...
+
 build:
-	goreleaser --rm-dist --snapshot
+	goreleaser build --clean --snapshot --skip=post-hooks
 
 release:
+	# Make sure that the tests pass and the build works
+	TAGS=tcell make test
+	make test build clean
+
 ifndef GITHUB_TOKEN
 	$(error GITHUB_TOKEN is not defined)
 endif
@@ -114,7 +129,7 @@ endif
 	git push origin temp --follow-tags --force
 
 	# Make a GitHub release
-	goreleaser --rm-dist --release-notes tmp/release-note
+	goreleaser --clean --release-notes tmp/release-note
 
 	# Push to master
 	git checkout master
@@ -132,6 +147,8 @@ target/$(BINARY32): $(SOURCES)
 target/$(BINARY64): $(SOURCES)
 	GOARCH=amd64 $(GO) build $(BUILD_FLAGS) -o $@
 
+target/$(BINARYS390): $(SOURCES)
+	GOARCH=s390x $(GO) build $(BUILD_FLAGS) -o $@
 # https://github.com/golang/go/wiki/GoArm
 target/$(BINARYARM5): $(SOURCES)
 	GOARCH=arm GOARM=5 $(GO) build $(BUILD_FLAGS) -o $@
@@ -155,18 +172,19 @@ target/$(BINARYLOONG64): $(SOURCES)
 	GOARCH=loong64 $(GO) build $(BUILD_FLAGS) -o $@
 
 bin/fzf: target/$(BINARY) | bin
+	-rm -f bin/fzf
 	cp -f target/$(BINARY) bin/fzf
 
 docker:
-	docker build -t fzf-arch .
+	docker build -t fzf-ubuntu .
-	docker run -it fzf-arch tmux
+	docker run -it fzf-ubuntu tmux
 
 docker-test:
-	docker build -t fzf-arch .
+	docker build -t fzf-ubuntu .
-	docker run -it fzf-arch
+	docker run -it fzf-ubuntu
 
 update:
 	$(GO) get -u
 	$(GO) mod tidy
 
-.PHONY: all build release test bench install clean docker docker-test update
+.PHONY: all generate build release test bench lint install clean docker docker-test update

README-VIM.md

@@ -12,7 +12,10 @@ differ depending on the package manager.
 " If installed using Homebrew
 set rtp+=/usr/local/opt/fzf
 
-" If installed using git
+" If installed using Homebrew on Apple Silicon
+set rtp+=/opt/homebrew/opt/fzf
+
+" If you have cloned fzf on ~/.fzf directory
 set rtp+=~/.fzf
 ```
 
@@ -23,7 +26,10 @@ written as:
 " If installed using Homebrew
 Plug '/usr/local/opt/fzf'
 
-" If installed using git
+" If installed using Homebrew on Apple Silicon
+Plug '/opt/homebrew/opt/fzf'
+
+" If you have cloned fzf on ~/.fzf directory
 Plug '~/.fzf'
 ```
 
@@ -115,7 +121,7 @@ let g:fzf_action = {
 
 " An action can be a reference to a function that processes selected lines
 function! s:build_quickfix_list(lines)
-  call setqflist(map(copy(a:lines), '{ "filename": v:val }'))
+  call setqflist(map(copy(a:lines), '{ "filename": v:val, "lnum": 1 }'))
   copen
   cc
 endfunction
@@ -232,19 +238,20 @@ call fzf#run({'sink': 'e'})
 ```
 
 We haven't specified the `source`, so this is equivalent to starting fzf on
-command line without standard input pipe; fzf will use find command (or
+command line without standard input pipe; fzf will traverse the file system
-`$FZF_DEFAULT_COMMAND` if defined) to list the files under the current
+under the current directory to get the list of files. (If
-directory. When you select one, it will open it with the sink, `:e` command.
+`$FZF_DEFAULT_COMMAND` is set, fzf will use the output of the command
-If you want to open it in a new tab, you can pass `:tabedit` command instead
+instead.) When you select one, it will open it with the sink, `:e` command. If
-as the sink.
+you want to open it in a new tab, you can pass `:tabedit` command instead as
+the sink.
 
 ```vim
 call fzf#run({'sink': 'tabedit'})
 ```
 
-Instead of using the default find command, you can use any shell command as
+You can use any shell command as the source to generate the list. The
-the source. The following example will list the files managed by git. It's
+following example will list the files managed by git. It's equivalent to
-equivalent to running `git ls-files | fzf` on shell.
+running `git ls-files | fzf` on shell.
 
 ```vim
 call fzf#run({'source': 'git ls-files', 'sink': 'e'})
@@ -282,12 +289,13 @@ The following table summarizes the available options.
 | `source`                   | string        | External command to generate input to fzf (e.g. `find .`)             |
 | `source`                   | list          | Vim list as input to fzf                                              |
 | `sink`                     | string        | Vim command to handle the selected item (e.g. `e`, `tabe`)            |
-| `sink`                     | funcref       | Reference to function to process each selected item                   |
+| `sink`                     | funcref       | Function to be called with each selected item                         |
 | `sinklist` (or `sink*`)    | funcref       | Similar to `sink`, but takes the list of output lines at once         |
+| `exit`                     | funcref       | Function to be called with the exit status of fzf (e.g. 0, 1, 2, 130) |
 | `options`                  | string/list   | Options to fzf                                                        |
 | `dir`                      | string        | Working directory                                                     |
 | `up`/`down`/`left`/`right` | number/string | (Layout) Window position and size (e.g. `20`, `50%`)                  |
-| `tmux`                     | string        | (Layout) fzf-tmux options (e.g. `-p90%,60%`)                          |
+| `tmux`                     | string        | (Layout) `--tmux` options (e.g. `90%,70%`)                            |
 | `window` (Vim 8 / Neovim)  | string        | (Layout) Command to open fzf window (e.g. `vertical aboveleft 30new`) |
 | `window` (Vim 8 / Neovim)  | dict          | (Layout) Popup window settings (e.g. `{'width': 0.9, 'height': 0.6}`) |
 
@@ -309,7 +317,7 @@ following options are allowed:
     - `yoffset` [float default 0.5 range [0 ~ 1]]
     - `xoffset` [float default 0.5 range [0 ~ 1]]
     - `relative` [boolean default v:false]
-    - `border` [string default `rounded`]: Border style
+    - `border` [string default `rounded` (`sharp` on Windows)]: Border style
         - `rounded` / `sharp` / `horizontal` / `vertical` / `top` / `bottom` / `left` / `right` / `no[ne]`
 
 `fzf#wrap`
@@ -450,12 +458,13 @@ let g:fzf_layout = { 'window': { 'width': 0.9, 'height': 0.6 } }
 ```
 
 Alternatively, you can make fzf open in a tmux popup window (requires tmux 3.2
-or above) by putting fzf-tmux options in `tmux` key.
+or above) by putting `--tmux` option value in `tmux` key.
 
 ```vim
-" See `man fzf-tmux` for available options
+" See `--tmux` option in `man fzf` for available options
+" [center|top|bottom|left|right][,SIZE[%]][,SIZE[%]]
 if exists('$TMUX')
-  let g:fzf_layout = { 'tmux': '-p90%,60%' }
+  let g:fzf_layout = { 'tmux': '90%,70%' }
 else
   let g:fzf_layout = { 'window': { 'width': 0.9, 'height': 0.6 } }
 endif
@@ -483,4 +492,4 @@ autocmd  FileType fzf set laststatus=0 noshowmode noruler
 
 The MIT License (MIT)
 
-Copyright (c) 2013-2021 Junegunn Choi
+Copyright (c) 2013-2024 Junegunn Choi

bin/fzf-preview.sh

@@ -0,0 +1,74 @@
+#!/usr/bin/env bash
+#
+# The purpose of this script is to demonstrate how to preview a file or an
+# image in the preview window of fzf.
+#
+# Dependencies:
+# - https://github.com/sharkdp/bat
+# - https://github.com/hpjansson/chafa
+# - https://iterm2.com/utilities/imgcat
+
+if [[ $# -ne 1 ]]; then
+  >&2 echo "usage: $0 FILENAME"
+  exit 1
+fi
+
+file=${1/#\~\//$HOME/}
+type=$(file --dereference --mime -- "$file")
+
+if [[ ! $type =~ image/ ]]; then
+  if [[ $type =~ =binary ]]; then
+    file "$1"
+    exit
+  fi
+
+  # Sometimes bat is installed as batcat.
+  if command -v batcat > /dev/null; then
+    batname="batcat"
+  elif command -v bat > /dev/null; then
+    batname="bat"
+  else
+    cat "$1"
+    exit
+  fi
+
+  ${batname} --style="${BAT_STYLE:-numbers}" --color=always --pager=never -- "$file"
+  exit
+fi
+
+dim=${FZF_PREVIEW_COLUMNS}x${FZF_PREVIEW_LINES}
+if [[ $dim = x ]]; then
+  dim=$(stty size < /dev/tty | awk '{print $2 "x" $1}')
+elif ! [[ $KITTY_WINDOW_ID ]] && (( FZF_PREVIEW_TOP + FZF_PREVIEW_LINES == $(stty size < /dev/tty | awk '{print $1}') )); then
+  # Avoid scrolling issue when the Sixel image touches the bottom of the screen
+  # * https://github.com/junegunn/fzf/issues/2544
+  dim=${FZF_PREVIEW_COLUMNS}x$((FZF_PREVIEW_LINES - 1))
+fi
+
+# 1. Use kitty icat on kitty terminal
+if [[ $KITTY_WINDOW_ID ]]; then
+  # 1. 'memory' is the fastest option but if you want the image to be scrollable,
+  #    you have to use 'stream'.
+  #
+  # 2. The last line of the output is the ANSI reset code without newline.
+  #    This confuses fzf and makes it render scroll offset indicator.
+  #    So we remove the last line and append the reset code to its previous line.
+  kitty icat --clear --transfer-mode=memory --unicode-placeholder --stdin=no --place="$dim@0x0" "$file" | sed '$d' | sed $'$s/$/\e[m/'
+
+# 2. Use chafa with Sixel output
+elif command -v chafa > /dev/null; then
+  chafa -s "$dim" "$file"
+  # Add a new line character so that fzf can display multiple images in the preview window
+  echo
+
+# 3. If chafa is not found but imgcat is available, use it on iTerm2
+elif command -v imgcat > /dev/null; then
+  # NOTE: We should use https://iterm2.com/utilities/it2check to check if the
+  # user is running iTerm2. But for the sake of simplicity, we just assume
+  # that's the case here.
+  imgcat -W "${dim%%x*}" -H "${dim##*x}" "$file"
+
+# 4. Cannot find any suitable method to preview the image
+else
+  file "$file"
+fi

bin/fzf-tmux

@@ -7,10 +7,9 @@ fail() {
   exit 2
 }
 
-fzf="$(command -v fzf 2> /dev/null)" || fzf="$(dirname "$0")/fzf"
+fzf="$(command which fzf)" || fzf="$(dirname "$0")/fzf"
 [[ -x "$fzf" ]] || fail 'fzf executable not found'
 
-tmux_args=()
 args=()
 opt=""
 skip=""
@@ -20,6 +19,9 @@ term=""
 [[ -n "$LINES" ]] && lines=$LINES || lines=$(tput lines) || lines=$(tmux display-message -p "#{pane_height}")
 [[ -n "$COLUMNS" ]] && columns=$COLUMNS || columns=$(tput cols) || columns=$(tmux display-message -p "#{pane_width}")
 
+tmux_version=$(tmux -V | sed 's/[^0-9.]//g')
+tmux_32=$(awk '{print ($1 >= 3.2)}' <<< "$tmux_version" 2> /dev/null || bc -l <<< "$tmux_version >= 3.2")
+
 help() {
   >&2 echo 'usage: fzf-tmux [LAYOUT OPTIONS] [--] [FZF OPTIONS]
 
@@ -58,7 +60,7 @@ while [[ $# -gt 0 ]]; do
       ;;
     -p*|-w*|-h*|-x*|-y*|-d*|-u*|-r*|-l*)
       if [[ "$arg" =~ ^-[pwhxy] ]]; then
-        [[ "$opt" =~ "-K -E" ]] || opt="-K -E"
+        [[ "$opt" =~ "-E" ]] || opt="-E"
       elif [[ "$arg" =~ ^.[lr] ]]; then
         opt="-h"
         if [[ "$arg" =~ ^.l ]]; then
@@ -95,10 +97,18 @@ while [[ $# -gt 0 ]]; do
         opt="$opt ${arg:0:2}$size"
       elif [[ "$size" =~ %$ ]]; then
         size=${size:0:((${#size}-1))}
-        if [[ -n "$swap" ]]; then
+        if [[ $tmux_32 = 1 ]]; then
-          opt="$opt -p $(( 100 - size ))"
+          if [[ -n "$swap" ]]; then
+            opt="$opt -l $(( 100 - size ))%"
+          else
+            opt="$opt -l $size%"
+          fi
         else
-          opt="$opt -p $size"
+          if [[ -n "$swap" ]]; then
+            opt="$opt -p $(( 100 - size ))"
+          else
+            opt="$opt -p $size"
+          fi
         fi
       else
         if [[ -n "$swap" ]]; then
@@ -119,8 +129,6 @@ while [[ $# -gt 0 ]]; do
       # "--" can be used to separate fzf-tmux options from fzf options to
       # avoid conflicts
       skip=1
-      tmux_args=("${args[@]}")
-      args=()
       continue
       ;;
     *)
@@ -135,11 +143,13 @@ if [[ -z "$TMUX" ]]; then
   exit $?
 fi
 
-# --height option is not allowed. CTRL-Z is also disabled.
+# * --height option is not allowed
-args=("${args[@]}" "--no-height" "--bind=ctrl-z:ignore")
+# * CTRL-Z is also disabled
+# * fzf-tmux script is not compatible with --tmux option in fzf 0.53.0 or later
+args=("${args[@]}" "--no-height" "--bind=ctrl-z:ignore" "--no-tmux")
 
 # Handle zoomed tmux pane without popup options by moving it to a temp window
-if [[ ! "$opt" =~ "-K -E" ]] && tmux list-panes -F '#F' | grep -q Z; then
+if [[ ! "$opt" =~ "-E" ]] && tmux list-panes -F '#F' | grep -q Z; then
   zoomed_without_popup=1
   original_window=$(tmux display-message -p "#{window_id}")
   tmp_window=$(tmux new-window -d -P -F "#{window_id}" "bash -c 'while :; do for c in \\| / - '\\;' do sleep 0.2; printf \"\\r\$c fzf-tmux is running\\r\"; done; done'")
@@ -154,12 +164,18 @@ argsf="${TMPDIR:-/tmp}/fzf-args-$id"
 fifo1="${TMPDIR:-/tmp}/fzf-fifo1-$id"
 fifo2="${TMPDIR:-/tmp}/fzf-fifo2-$id"
 fifo3="${TMPDIR:-/tmp}/fzf-fifo3-$id"
-tmux_win_opts=( $(tmux show-window-options remain-on-exit \; show-window-options synchronize-panes | sed '/ off/d; s/^/set-window-option /; s/$/ \\;/') )
+if tmux_win_opts=$(tmux show-options -p remain-on-exit \; show-options -p synchronize-panes 2> /dev/null); then
+  tmux_win_opts=( $(sed '/ off/d; s/synchronize-panes/set-option -p synchronize-panes/; s/remain-on-exit/set-option -p remain-on-exit/; s/$/ \\;/' <<< "$tmux_win_opts") )
+  tmux_off_opts='; set-option -p synchronize-panes off ; set-option -p remain-on-exit off'
+else
+  tmux_win_opts=( $(tmux show-window-options remain-on-exit \; show-window-options synchronize-panes | sed '/ off/d; s/^/set-window-option /; s/$/ \\;/') )
+  tmux_off_opts='; set-window-option synchronize-panes off ; set-window-option remain-on-exit off'
+fi
 cleanup() {
   \rm -f $argsf $fifo1 $fifo2 $fifo3
 
   # Restore tmux window options
-  if [[ "${#tmux_win_opts[@]}" -gt 0 ]]; then
+  if [[ "${#tmux_win_opts[@]}" -gt 1 ]]; then
     eval "tmux ${tmux_win_opts[*]}"
   fi
 
@@ -181,9 +197,22 @@ trap 'cleanup 1' SIGUSR1
 trap 'cleanup' EXIT
 
 envs="export TERM=$TERM "
-[[ "$opt" =~ "-K -E" ]] && FZF_DEFAULT_OPTS="--margin 0,1 $FZF_DEFAULT_OPTS"
+if [[ "$opt" =~ "-E" ]]; then
-[[ -n "$FZF_DEFAULT_OPTS"    ]] && envs="$envs FZF_DEFAULT_OPTS=$(printf %q "$FZF_DEFAULT_OPTS")"
+  if [[ $tmux_version = 3.2 ]]; then
-[[ -n "$FZF_DEFAULT_COMMAND" ]] && envs="$envs FZF_DEFAULT_COMMAND=$(printf %q "$FZF_DEFAULT_COMMAND")"
+    FZF_DEFAULT_OPTS="--margin 0,1 $FZF_DEFAULT_OPTS"
+  elif [[ $tmux_32 = 1 ]]; then
+    FZF_DEFAULT_OPTS="--border $FZF_DEFAULT_OPTS"
+    opt="-B $opt"
+  else
+    echo "fzf-tmux: tmux 3.2 or above is required for popup mode" >&2
+    exit 2
+  fi
+fi
+envs="$envs FZF_DEFAULT_COMMAND=$(printf %q "$FZF_DEFAULT_COMMAND")"
+envs="$envs FZF_DEFAULT_OPTS=$(printf %q "$FZF_DEFAULT_OPTS")"
+envs="$envs FZF_DEFAULT_OPTS_FILE=$(printf %q "$FZF_DEFAULT_OPTS_FILE")"
+[[ -n "$RUNEWIDTH_EASTASIAN" ]] && envs="$envs RUNEWIDTH_EASTASIAN=$(printf %q "$RUNEWIDTH_EASTASIAN")"
+[[ -n "$BAT_THEME" ]] && envs="$envs BAT_THEME=$(printf %q "$BAT_THEME")"
 echo "$envs;" > "$argsf"
 
 # Build arguments to fzf
@@ -195,7 +224,7 @@ close="; trap - EXIT SIGINT SIGTERM $close"
 
 export TMUX=$(cut -d , -f 1,2 <<< "$TMUX")
 mkfifo -m o+w $fifo2
-if [[ "$opt" =~ "-K -E" ]]; then
+if [[ "$opt" =~ "-E" ]]; then
   cat $fifo2 &
   if [[ -n "$term" ]] || [[ -t 0 ]]; then
     cat <<< "\"$fzf\" $opts > $fifo2; out=\$? $close; exit \$out" >> $argsf
@@ -205,15 +234,7 @@ if [[ "$opt" =~ "-K -E" ]]; then
     cat <&0 > $fifo1 &
   fi
 
-  # tmux dropped the support for `-K`, `-R` to popup command
+  tmux popup -d "$PWD" $opt "bash $argsf" > /dev/null 2>&1
-  #   TODO: We can remove this once tmux 3.2 is released
-  if [[ ! "$(tmux popup --help 2>&1)" =~ '-R shell-command' ]]; then
-    opt="${opt/-K/}"
-  else
-    opt="${opt} -R"
-  fi
-
-  tmux popup -d "$PWD" "${tmux_args[@]}" $opt "bash $argsf" > /dev/null 2>&1
   exit $?
 fi
 
@@ -225,9 +246,9 @@ else
   cat <<< "\"$fzf\" $opts < $fifo1 > $fifo2; echo \$? > $fifo3 $close" >> $argsf
   cat <&0 > $fifo1 &
 fi
-tmux set-window-option synchronize-panes off \;\
+tmux \
-  set-window-option remain-on-exit off \;\
+  split-window -c "$PWD" $opt "bash -c 'exec -a fzf bash $argsf'" $swap \
-  split-window -c "$PWD" $opt "${tmux_args[@]}" "bash -c 'exec -a fzf bash $argsf'" $swap \
+  $tmux_off_opts \
   > /dev/null 2>&1 || { "$fzf" "${args[@]}"; exit $?; }
 cat $fifo2
 exit "$(cat $fifo3)"

doc/fzf.txt

@@ -1,4 +1,4 @@
-fzf.txt	fzf	Last change: May 19 2021
+fzf.txt	fzf	Last change: February 15 2024
 FZF - TABLE OF CONTENTS                                            *fzf* *fzf-toc*
 ==============================================================================
 
@@ -32,7 +32,10 @@ depending on the package manager.
     " If installed using Homebrew
     set rtp+=/usr/local/opt/fzf
 
-    " If installed using git
+    " If installed using Homebrew on Apple Silicon
+    set rtp+=/opt/homebrew/opt/fzf
+
+    " If you have cloned fzf on ~/.fzf directory
     set rtp+=~/.fzf
 <
 If you use {vim-plug}{1}, the same can be written as:
@@ -40,7 +43,10 @@ If you use {vim-plug}{1}, the same can be written as:
     " If installed using Homebrew
     Plug '/usr/local/opt/fzf'
 
-    " If installed using git
+    " If installed using Homebrew on Apple Silicon
+    Plug '/opt/homebrew/opt/fzf'
+
+    " If you have cloned fzf on ~/.fzf directory
     Plug '~/.fzf'
 <
 But if you want the latest Vim plugin file from GitHub rather than the one
@@ -68,16 +74,16 @@ SUMMARY                                                            *fzf-summary*
 The Vim plugin of fzf provides two core functions, and `:FZF` command which is
 the basic file selector command built on top of them.
 
- 1. `fzf#run([spec dict])`
+ 1. `fzf#run([spec dict])`
    - Starts fzf inside Vim with the given spec
-   - `:call fzf#run({'source': 'ls'})`
+   - `:call fzf#run({'source': 'ls'})`
- 2. `fzf#wrap([spec dict]) -> (dict)`
+ 2. `fzf#wrap([spec dict]) -> (dict)`
    - Takes a spec for `fzf#run` and returns an extended version of it with
      additional options for addressing global preferences (`g:fzf_xxx`)
-     - `:echo fzf#wrap({'source': 'ls'})`
+     - `:echo fzf#wrap({'source': 'ls'})`
    - We usually wrap a spec with `fzf#wrap` before passing it to `fzf#run`
-     - `:call fzf#run(fzf#wrap({'source': 'ls'}))`
+     - `:call fzf#run(fzf#wrap({'source': 'ls'}))`
- 3. `:FZF [fzf_options string] [path string]`
+ 3. `:FZF [fzf_options string] [path string]`
    - Basic fuzzy file selector
    - A reference implementation for those who don't want to write VimScript to
      implement custom commands
@@ -143,7 +149,7 @@ Examples~
 
     " An action can be a reference to a function that processes selected lines
     function! s:build_quickfix_list(lines)
-      call setqflist(map(copy(a:lines), '{ "filename": v:val }'))
+      call setqflist(map(copy(a:lines), '{ "filename": v:val, "lnum": 1 }'))
       copen
       cc
     endfunction
@@ -222,12 +228,12 @@ list:
   `spinner`                    | Streaming input indicator
   `query`                      | Query string
   `disabled`                   | Query string when search is disabled
-  `prompt`                     | Prompt before query ( `> ` )
+  `prompt`                     | Prompt before query ( `> ` )
   `pointer`                    | Pointer to the current line ( `>` )
  ----------------------------+------------------------------------------------------
  - `component` specifies the component (`fg` / `bg`) from which to extract the
    color when considering each of the following highlight groups
- - `group1 [, group2, ...]` is a list of highlight groups that are searched (in
+ - `group1 [, group2, ...]` is a list of highlight groups that are searched (in
    order) for a matching color definition
 
 For example, consider the following specification:
@@ -258,17 +264,18 @@ entry.
     call fzf#run({'sink': 'e'})
 <
 We haven't specified the `source`, so this is equivalent to starting fzf on
-command line without standard input pipe; fzf will use find command (or
+command line without standard input pipe; fzf will traverse the file system
-`$FZF_DEFAULT_COMMAND` if defined) to list the files under the current
+under the current directory to get the list of files. (If
-directory. When you select one, it will open it with the sink, `:e` command.
+`$FZF_DEFAULT_COMMAND` is set, fzf will use the output of the command
-If you want to open it in a new tab, you can pass `:tabedit` command instead
+instead.) When you select one, it will open it with the sink, `:e` command. If
-as the sink.
+you want to open it in a new tab, you can pass `:tabedit` command instead as
+the sink.
 >
     call fzf#run({'sink': 'tabedit'})
 <
-Instead of using the default find command, you can use any shell command as
+You can use any shell command as the source to generate the list. The
-the source. The following example will list the files managed by git. It's
+following example will list the files managed by git. It's equivalent to
-equivalent to running `git ls-files | fzf` on shell.
+running `git ls-files | fzf` on shell.
 >
     call fzf#run({'source': 'git ls-files', 'sink': 'e'})
 <
@@ -296,17 +303,18 @@ The following table summarizes the available options.
  ---------------------------+---------------+----------------------------------------------------------------------
  Option name                | Type          | Description                                                          ~
  ---------------------------+---------------+----------------------------------------------------------------------
-  `source`                    | string        | External command to generate input to fzf (e.g.  `find .` )
+  `source`                    | string        | External command to generate input to fzf (e.g.  `find .` )
   `source`                    | list          | Vim list as input to fzf
   `sink`                      | string        | Vim command to handle the selected item (e.g.  `e` ,  `tabe` )
-  `sink`                      | funcref       | Reference to function to process each selected item
+  `sink`                      | funcref       | Function to be called with each selected item
   `sinklist`  (or  `sink*` )    | funcref       | Similar to  `sink` , but takes the list of output lines at once
+  `exit`                      | funcref       | Function to be called with the exit status of fzf (e.g. 0, 1, 2, 130)
   `options`                   | string/list   | Options to fzf
   `dir`                       | string        | Working directory
   `up` / `down` / `left` / `right`  | number/string | (Layout) Window position and size (e.g.  `20` ,  `50%` )
-  `tmux`                      | string        | (Layout) fzf-tmux options (e.g.  `-p90%,60%` )
+  `tmux`                      | string        | (Layout) `--tmux` options (e.g.  `90%,70%` )
-  `window`  (Vim 8 / Neovim)  | string        | (Layout) Command to open fzf window (e.g.  `vertical aboveleft 30new` )
+  `window`  (Vim 8 / Neovim)  | string        | (Layout) Command to open fzf window (e.g.  `vertical aboveleft 30new` )
-  `window`  (Vim 8 / Neovim)  | dict          | (Layout) Popup window settings (e.g.  `{'width': 0.9, 'height': 0.6}` )
+  `window`  (Vim 8 / Neovim)  | dict          | (Layout) Popup window settings (e.g.  `{'width': 0.9, 'height': 0.6}` )
  ---------------------------+---------------+----------------------------------------------------------------------
 
 `options` entry can be either a string or a list. For simple cases, string
@@ -325,7 +333,7 @@ following options are allowed:
    - `yoffset` [float default 0.5 range [0 ~ 1]]
    - `xoffset` [float default 0.5 range [0 ~ 1]]
    - `relative` [boolean default v:false]
-   - `border` [string default `rounded`]: Border style
+   - `border` [string default `rounded` (`sharp` on Windows)]: Border style
      - `rounded` / `sharp` / `horizontal` / `vertical` / `top` / `bottom` / `left` / `right` / `no[ne]`
 
 
@@ -343,7 +351,7 @@ So how can we make our custom `fzf#run` calls also respect those variables?
 Simply by "wrapping" the spec dictionary with `fzf#wrap` before passing it to
 `fzf#run`.
 
- - `fzf#wrap([name string], [spec dict], [fullscreen bool]) -> (dict)`
+ - `fzf#wrap([name string], [spec dict], [fullscreen bool]) -> (dict)`
    - All arguments are optional. Usually we only need to pass a spec
      dictionary.
    - `name` is for managing history files. It is ignored if `g:fzf_history_dir`
@@ -377,7 +385,7 @@ last `fullscreen` argument of `fzf#wrap` (see :help <bang>).
     command! -bang LS call fzf#run(fzf#wrap({'source': 'ls'}, <bang>0))
 <
 Our `:LS` command will be much more useful if we can pass a directory argument
-to it, so that something like `:LS /tmp` is possible.
+to it, so that something like `:LS /tmp` is possible.
 >
     command! -bang -complete=dir -nargs=? LS
         \ call fzf#run(fzf#wrap({'source': 'ls', 'dir': <q-args>}, <bang>0))
@@ -396,10 +404,10 @@ unique name to our command and pass it as the first argument to `fzf#wrap`.
 
  - `g:fzf_layout`
  - `g:fzf_action`
-   - Works only when no custom `sink` (or `sink*`) is provided
+   - Works only when no custom `sink` (or `sinklist`) is provided
      - Having custom sink usually means that each entry is not an ordinary
        file path (e.g. name of color scheme), so we can't blindly apply the
-       same strategy (i.e. `tabedit some-color-scheme` doesn't make sense)
+       same strategy (i.e. `tabedit some-color-scheme` doesn't make sense)
  - `g:fzf_colors`
  - `g:fzf_history_dir`
 
@@ -411,24 +419,12 @@ TIPS                                                                  *fzf-tips*
 < fzf inside terminal buffer >________________________________________________~
                                                     *fzf-inside-terminal-buffer*
 
-The latest versions of Vim and Neovim include builtin terminal emulator
-(`:terminal`) and fzf will start in a terminal buffer in the following cases:
-
- - On Neovim
- - On GVim
- - On Terminal Vim with a non-default layout
-   - `call fzf#run({'left': '30%'})` or `let g:fzf_layout = {'left': '30%'}`
 
 On the latest versions of Vim and Neovim, fzf will start in a terminal buffer.
 If you find the default ANSI colors to be different, consider configuring the
 colors using `g:terminal_ansi_colors` in regular Vim or `g:terminal_color_x`
 in Neovim.
 
-                   *g:terminal_color_15* *g:terminal_color_14* *g:terminal_color_13*
-*g:terminal_color_12* *g:terminal_color_11* *g:terminal_color_10* *g:terminal_color_9*
-   *g:terminal_color_8* *g:terminal_color_7* *g:terminal_color_6* *g:terminal_color_5*
-   *g:terminal_color_4* *g:terminal_color_3* *g:terminal_color_2* *g:terminal_color_1*
-                                                            *g:terminal_color_0*
 >
     " Terminal colors for seoul256 color scheme
     if has('nvim')
@@ -474,11 +470,12 @@ in Neovim.
     let g:fzf_layout = { 'window': { 'width': 0.9, 'height': 0.6 } }
 <
 Alternatively, you can make fzf open in a tmux popup window (requires tmux 3.2
-or above) by putting fzf-tmux options in `tmux` key.
+or above) by putting `--tmux` options in `tmux` key.
 >
-    " See `man fzf-tmux` for available options
+    " See `--tmux` option in `man fzf` for available options
+    " [center|top|bottom|left|right][,SIZE[%]][,SIZE[%]]
     if exists('$TMUX')
-      let g:fzf_layout = { 'tmux': '-p90%,60%' }
+      let g:fzf_layout = { 'tmux': '90%,70%' }
     else
       let g:fzf_layout = { 'window': { 'width': 0.9, 'height': 0.6 } }
     endif
@@ -488,7 +485,7 @@ or above) by putting fzf-tmux options in `tmux` key.
                                                            *fzf-hide-statusline*
 
 When fzf starts in a terminal buffer, the file type of the buffer is set to
-`fzf`. So you can set up `FileType fzf` autocmd to customize the settings of
+`fzf`. So you can set up `FileType fzf` autocmd to customize the settings of
 the window.
 
 For example, if you open fzf on the bottom on the screen (e.g. `{'down':
@@ -506,7 +503,7 @@ LICENSE                                                            *fzf-license*
 
 The MIT License (MIT)
 
-Copyright (c) 2013-2021 Junegunn Choi
+Copyright (c) 2013-2024 Junegunn Choi
 
 ==============================================================================
 vim:tw=78:sw=2:ts=2:ft=help:norl:nowrap:

go.mod

@@ -1,21 +1,20 @@
 module github.com/junegunn/fzf
 
 require (
-	github.com/gdamore/tcell v1.4.0
+	github.com/charlievieth/fastwalk v1.0.8
-	github.com/mattn/go-isatty v0.0.14
+	github.com/gdamore/tcell/v2 v2.7.4
-	github.com/mattn/go-runewidth v0.0.13
+	github.com/junegunn/go-shellwords v0.0.0-20240813092932-a62c48c52e97
-	github.com/mattn/go-shellwords v1.0.12
+	github.com/mattn/go-isatty v0.0.20
-	github.com/rivo/uniseg v0.2.0
+	github.com/rivo/uniseg v0.4.7
-	github.com/saracen/walker v0.1.2
+	golang.org/x/sys v0.25.0
-	golang.org/x/sys v0.0.0-20220406163625-3f8b81556e12
+	golang.org/x/term v0.24.0
-	golang.org/x/term v0.0.0-20210927222741-03fcf44c2211
 )
 
 require (
 	github.com/gdamore/encoding v1.0.0 // indirect
 	github.com/lucasb-eyer/go-colorful v1.2.0 // indirect
-	golang.org/x/sync v0.0.0-20210220032951-036812b2e83c // indirect
+	github.com/mattn/go-runewidth v0.0.15 // indirect
-	golang.org/x/text v0.3.7 // indirect
+	golang.org/x/text v0.14.0 // indirect
 )
 
-go 1.17
+go 1.20

go.sum

@@ -1,32 +1,57 @@
+github.com/charlievieth/fastwalk v1.0.8 h1:uaoH6cAKSk73aK7aKXqs0+bL+J3Txzd3NGH8tRXgHko=
+github.com/charlievieth/fastwalk v1.0.8/go.mod h1:yGy1zbxog41ZVMcKA/i8ojXLFsuayX5VvwhQVoj9PBI=
 github.com/gdamore/encoding v1.0.0 h1:+7OoQ1Bc6eTm5niUzBa0Ctsh6JbMW6Ra+YNuAtDBdko=
 github.com/gdamore/encoding v1.0.0/go.mod h1:alR0ol34c49FCSBLjhosxzcPHQbf2trDkoo5dl+VrEg=
-github.com/gdamore/tcell v1.4.0 h1:vUnHwJRvcPQa3tzi+0QI4U9JINXYJlOz9yiaiPQ2wMU=
+github.com/gdamore/tcell/v2 v2.7.4 h1:sg6/UnTM9jGpZU+oFYAsDahfchWAFW8Xx2yFinNSAYU=
-github.com/gdamore/tcell v1.4.0/go.mod h1:vxEiSDZdW3L+Uhjii9c3375IlDmR05bzxY404ZVSMo0=
+github.com/gdamore/tcell/v2 v2.7.4/go.mod h1:dSXtXTSK0VsW1biw65DZLZ2NKr7j0qP/0J7ONmsraWg=
-github.com/lucasb-eyer/go-colorful v1.0.3/go.mod h1:R4dSotOR9KMtayYi1e77YzuveK+i7ruzyGqttikkLy0=
+github.com/junegunn/go-shellwords v0.0.0-20240813092932-a62c48c52e97 h1:rqzLixVo1c/GQW6px9j1xQmlvQIn+lf/V6M1UQ7IFzw=
+github.com/junegunn/go-shellwords v0.0.0-20240813092932-a62c48c52e97/go.mod h1:6EILKtGpo5t+KLb85LNZLAF6P9LKp78hJI80PXMcn3c=
 github.com/lucasb-eyer/go-colorful v1.2.0 h1:1nnpGOrhyZZuNyfu1QjKiUICQ74+3FNCN69Aj6K7nkY=
 github.com/lucasb-eyer/go-colorful v1.2.0/go.mod h1:R4dSotOR9KMtayYi1e77YzuveK+i7ruzyGqttikkLy0=
-github.com/mattn/go-isatty v0.0.14 h1:yVuAays6BHfxijgZPzw+3Zlu5yQgKGP2/hcQbHb7S9Y=
+github.com/mattn/go-isatty v0.0.20 h1:xfD0iDuEKnDkl03q4limB+vH+GxLEtL/jb4xVJSWWEY=
-github.com/mattn/go-isatty v0.0.14/go.mod h1:7GGIvUiUoEMVVmxf/4nioHXj79iQHKdU27kJ6hsGG94=
+github.com/mattn/go-isatty v0.0.20/go.mod h1:W+V8PltTTMOvKvAeJH7IuucS94S2C6jfK/D7dTCTo3Y=
-github.com/mattn/go-runewidth v0.0.7/go.mod h1:H031xJmbD/WCDINGzjvQ9THkh0rPKHF+m2gUSrubnMI=
+github.com/mattn/go-runewidth v0.0.15 h1:UNAjwbU9l54TA3KzvqLGxwWjHmMgBUVhBiTjelZgg3U=
-github.com/mattn/go-runewidth v0.0.13 h1:lTGmDsbAYt5DmK6OnoV7EuIF1wEIFAcxld6ypU4OSgU=
+github.com/mattn/go-runewidth v0.0.15/go.mod h1:Jdepj2loyihRzMpdS35Xk/zdY8IAYHsh153qUoGf23w=
-github.com/mattn/go-runewidth v0.0.13/go.mod h1:Jdepj2loyihRzMpdS35Xk/zdY8IAYHsh153qUoGf23w=
-github.com/mattn/go-shellwords v1.0.12 h1:M2zGm7EW6UQJvDeQxo4T51eKPurbeFbe8WtebGE2xrk=
-github.com/mattn/go-shellwords v1.0.12/go.mod h1:EZzvwXDESEeg03EKmM+RmDnNOPKG4lLtQsUlTZDWQ8Y=
-github.com/rivo/uniseg v0.2.0 h1:S1pD9weZBuJdFmowNwbpi7BJ8TNftyUImj/0WQi72jY=
 github.com/rivo/uniseg v0.2.0/go.mod h1:J6wj4VEh+S6ZtnVlnTBMWIodfgj8LQOQFoIToxlJtxc=
-github.com/saracen/walker v0.1.2 h1:/o1TxP82n8thLvmL4GpJXduYaRmJ7qXp8u9dSlV0zmo=
+github.com/rivo/uniseg v0.4.3/go.mod h1:FN3SvrM+Zdj16jyLfmOkMNblXMcoc8DfTHruCPUcx88=
-github.com/saracen/walker v0.1.2/go.mod h1:0oKYMsKVhSJ+ful4p/XbjvXbMgLEkLITZaxozsl4CGE=
+github.com/rivo/uniseg v0.4.7 h1:WUdvkW8uEhrYfLC4ZzdpI2ztxP1I582+49Oc5Mq64VQ=
-golang.org/x/sync v0.0.0-20200317015054-43a5402ce75a/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+github.com/rivo/uniseg v0.4.7/go.mod h1:FN3SvrM+Zdj16jyLfmOkMNblXMcoc8DfTHruCPUcx88=
-golang.org/x/sync v0.0.0-20210220032951-036812b2e83c h1:5KslGYwFpkhGh+Q16bwMP3cOontH8FOep7tGV86Y7SQ=
+github.com/yuin/goldmark v1.4.13/go.mod h1:6yULJ656Px+3vBD8DxQVa3kxgyrAnzto9xy5taEt/CY=
-golang.org/x/sync v0.0.0-20210220032951-036812b2e83c/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
-golang.org/x/sys v0.0.0-20190626150813-e07cf5db2756/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/crypto v0.0.0-20210921155107-089bfa567519/go.mod h1:GvvjBRRGRdwPK5ydBHafDWAxML/pGHZbMvKqRZ5+Abc=
+golang.org/x/mod v0.6.0-dev.0.20220419223038-86c51ed26bb4/go.mod h1:jJ57K6gSWd91VN4djpZkiMVwK6gcyfeH4XE8wZrZaV4=
+golang.org/x/mod v0.8.0/go.mod h1:iBbtSCu2XBx23ZKBPSOrRkjjQPZFPuis4dIYUhu/chs=
+golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
+golang.org/x/net v0.0.0-20210226172049-e18ecbb05110/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg=
+golang.org/x/net v0.0.0-20220722155237-a158d28d115b/go.mod h1:XRhObCWvk6IyKnWLug+ECip1KBveYUHfp+8e9klMJ9c=
+golang.org/x/net v0.6.0/go.mod h1:2Tu9+aMcznHK/AK1HMvgo6xiTLG5rD5rZLDS+rp2Bjs=
+golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sync v0.0.0-20220722155255-886fb9371eb4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sync v0.1.0/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
+golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20210615035016-665e8c7367d1/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
-golang.org/x/sys v0.0.0-20210630005230-0f9fa26af87c/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.0.0-20220520151302-bc2c85ada10a/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
-golang.org/x/sys v0.0.0-20220406163625-3f8b81556e12 h1:QyVthZKMsyaQwBTJE04jdNN0Pp5Fn9Qga0mrgxyERQM=
+golang.org/x/sys v0.0.0-20220722155257-8c9f86f7a55f/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
-golang.org/x/sys v0.0.0-20220406163625-3f8b81556e12/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.5.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
-golang.org/x/term v0.0.0-20210927222741-03fcf44c2211 h1:JGgROgKl9N8DuW20oFS5gxc+lE67/N3FcwmBPMe7ArY=
+golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.17.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
+golang.org/x/sys v0.25.0 h1:r+8e+loiHxRqhXVl6ML1nO3l1+oFoWbnlu2Ehimmi34=
+golang.org/x/sys v0.25.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
+golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
 golang.org/x/term v0.0.0-20210927222741-03fcf44c2211/go.mod h1:jbD1KX2456YbFQfuXm/mYQcufACuNUgVhRMnK/tPxf8=
+golang.org/x/term v0.5.0/go.mod h1:jMB1sMXY+tzblOD4FWmEbocvup2/aLOaQEp7JmGp78k=
+golang.org/x/term v0.17.0/go.mod h1:lLRBjIVuehSbZlaOtGMbcMncT+aqLLLmKrsjNrUguwk=
+golang.org/x/term v0.24.0 h1:Mh5cbb+Zk2hqqXNO7S1iTjEphVL+jb8ZWaqh/g+JWkM=
+golang.org/x/term v0.24.0/go.mod h1:lOBK/LVxemqiMij05LGJ0tzNr8xlmwBRJ81PX6wVLH8=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
-golang.org/x/text v0.3.7 h1:olpwvP2KacW1ZWvsR7uQhoyTYvKAupfQrRGBFM352Gk=
+golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
 golang.org/x/text v0.3.7/go.mod h1:u+2+/6zg+i71rQMx5EYifcz6MCKuco9NR6JIITiCfzQ=
+golang.org/x/text v0.7.0/go.mod h1:mrYo+phRRbMaCq/xk9113O4dZlRixOauAjOtrjsXDZ8=
+golang.org/x/text v0.14.0 h1:ScX5w1eTa3QqT8oi6+ziP7dTV1S2+ALU0bI+0zXKWiQ=
+golang.org/x/text v0.14.0/go.mod h1:18ZOQIKpY8NJVqYksKHtTdi31H5itFRjB5/qKTNYzSU=
 golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
+golang.org/x/tools v0.0.0-20191119224855-298f0cb1881e/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
+golang.org/x/tools v0.1.12/go.mod h1:hNGJHUnrk76NpqgfD5Aqm5Crs+Hm0VOH/i9J2+nxYbc=
+golang.org/x/tools v0.6.0/go.mod h1:Xwgl3UAJ/d3gWutnCtw505GrjyAbvKui8lOU390QaIU=
+golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=

install

@@ -2,7 +2,7 @@
 
 set -u
 
-version=0.30.0
+version=0.55.0
 auto_completion=
 key_bindings=
 update_config=2
@@ -115,7 +115,7 @@ link_fzf_in_path() {
 try_curl() {
   command -v curl > /dev/null &&
   if [[ $1 =~ tar.gz$ ]]; then
-    curl -fL $1 | tar -xzf -
+    curl -fL $1 | tar --no-same-owner -xzf -
   else
     local temp=${TMPDIR:-/tmp}/fzf.zip
     curl -fLo "$temp" $1 && unzip -o "$temp" && rm -f "$temp"
@@ -125,7 +125,7 @@ try_curl() {
 try_wget() {
   command -v wget > /dev/null &&
   if [[ $1 =~ tar.gz$ ]]; then
-    wget -O - $1 | tar -xzf -
+    wget -O - $1 | tar --no-same-owner -xzf -
   else
     local temp=${TMPDIR:-/tmp}/fzf.zip
     wget -O "$temp" $1 && unzip -o "$temp" && rm -f "$temp"
@@ -146,7 +146,7 @@ download() {
   fi
 
   local url
-  url=https://github.com/junegunn/fzf/releases/download/$version/${1}
+  url=https://github.com/junegunn/fzf/releases/download/v$version/${1}
   set -o pipefail
   if ! (try_curl $url || try_wget $url); then
     set +o pipefail
@@ -168,21 +168,24 @@ archi=$(uname -sm)
 binary_available=1
 binary_error=""
 case "$archi" in
-  Darwin\ arm64)   download fzf-$version-darwin_arm64.zip     ;;
+  Darwin\ arm64)      download fzf-$version-darwin_arm64.tar.gz  ;;
-  Darwin\ x86_64)  download fzf-$version-darwin_amd64.zip     ;;
+  Darwin\ x86_64)     download fzf-$version-darwin_amd64.tar.gz  ;;
-  Linux\ armv5*)   download fzf-$version-linux_armv5.tar.gz   ;;
+  Linux\ armv5*)      download fzf-$version-linux_armv5.tar.gz   ;;
-  Linux\ armv6*)   download fzf-$version-linux_armv6.tar.gz   ;;
+  Linux\ armv6*)      download fzf-$version-linux_armv6.tar.gz   ;;
-  Linux\ armv7*)   download fzf-$version-linux_armv7.tar.gz   ;;
+  Linux\ armv7*)      download fzf-$version-linux_armv7.tar.gz   ;;
-  Linux\ armv8*)   download fzf-$version-linux_arm64.tar.gz   ;;
+  Linux\ armv8*)      download fzf-$version-linux_arm64.tar.gz   ;;
-  Linux\ aarch64*) download fzf-$version-linux_arm64.tar.gz   ;;
+  Linux\ aarch64*)    download fzf-$version-linux_arm64.tar.gz   ;;
-  Linux\ *64)      download fzf-$version-linux_amd64.tar.gz   ;;
+  Linux\ loongarch64) download fzf-$version-linux_loong64.tar.gz ;;
-  FreeBSD\ *64)    download fzf-$version-freebsd_amd64.tar.gz ;;
+  Linux\ ppc64le)     download fzf-$version-linux_ppc64le.tar.gz ;;
-  OpenBSD\ *64)    download fzf-$version-openbsd_amd64.tar.gz ;;
+  Linux\ *64)         download fzf-$version-linux_amd64.tar.gz   ;;
-  CYGWIN*\ *64)    download fzf-$version-windows_amd64.zip    ;;
+  Linux\ s390x)       download fzf-$version-linux_s390x.tar.gz   ;;
-  MINGW*\ *64)     download fzf-$version-windows_amd64.zip    ;;
+  FreeBSD\ *64)       download fzf-$version-freebsd_amd64.tar.gz ;;
-  MSYS*\ *64)      download fzf-$version-windows_amd64.zip    ;;
+  OpenBSD\ *64)       download fzf-$version-openbsd_amd64.tar.gz ;;
-  Windows*\ *64)   download fzf-$version-windows_amd64.zip    ;;
+  CYGWIN*\ *64)       download fzf-$version-windows_amd64.zip    ;;
-  *)               binary_available=0 binary_error=1 ;;
+  MINGW*\ *64)        download fzf-$version-windows_amd64.zip    ;;
+  MSYS*\ *64)         download fzf-$version-windows_amd64.zip    ;;
+  Windows*\ *64)      download fzf-$version-windows_amd64.zip    ;;
+  *)                  binary_available=0 binary_error=1          ;;
 esac
 
 cd "$fzf_base"
@@ -193,12 +196,12 @@ if [ -n "$binary_error" ]; then
     echo "  - $binary_error !!!"
   fi
   if command -v go > /dev/null; then
-    echo -n "Building binary (go get -u github.com/junegunn/fzf) ... "
+    echo -n "Building binary (go install github.com/junegunn/fzf) ... "
     if [ -z "${GOPATH-}" ]; then
       export GOPATH="${TMPDIR:-/tmp}/fzf-gopath"
       mkdir -p "$GOPATH"
     fi
-    if go get -ldflags "-s -w -X main.version=$version -X main.revision=go-get" github.com/junegunn/fzf; then
+    if go install -ldflags "-s -w -X main.version=$version -X main.revision=go-install" github.com/junegunn/fzf; then
       echo "OK"
       cp "$GOPATH/bin/fzf" "$fzf_base/bin/"
     else
@@ -242,7 +245,7 @@ for shell in $shells; do
   src=${prefix_expand}.${shell}
   echo -n "Generate $src ... "
 
-  fzf_completion="[[ \$- == *i* ]] && source \"$fzf_base/shell/completion.${shell}\" 2> /dev/null"
+  fzf_completion="source \"$fzf_base/shell/completion.${shell}\""
   if [ $auto_completion -eq 0 ]; then
     fzf_completion="# $fzf_completion"
   fi
@@ -259,6 +262,16 @@ if [[ ! "\$PATH" == *$fzf_base_esc/bin* ]]; then
   PATH="\${PATH:+\${PATH}:}$fzf_base/bin"
 fi
 
+EOF
+
+  if [[ $auto_completion -eq 1 ]] && [[ $key_bindings -eq 1 ]]; then
+    if [[ "$shell" = zsh ]]; then
+      echo "source <(fzf --$shell)" >> "$src"
+    else
+      echo "eval \"\$(fzf --$shell)\"" >> "$src"
+    fi
+  else
+    cat >> "$src" << EOF
 # Auto-completion
 # ---------------
 $fzf_completion
@@ -267,6 +280,7 @@ $fzf_completion
 # ------------
 $fzf_key_bindings
 EOF
+  fi
   echo "OK"
 done
 
@@ -278,18 +292,6 @@ if [[ "$shells" =~ fish ]]; then
   or set --universal fish_user_paths \$fish_user_paths "$fzf_base"/bin
 EOF
   [ $? -eq 0 ] && echo "OK" || echo "Failed"
-
-  mkdir -p "${fish_dir}/functions"
-  fish_binding="${fish_dir}/functions/fzf_key_bindings.fish"
-  if [ $key_bindings -ne 0 ]; then
-    echo -n "Symlink $fish_binding ... "
-    ln -sf "$fzf_base/shell/key-bindings.fish" \
-           "$fish_binding" && echo "OK" || echo "Failed"
-  else
-    echo -n "Removing $fish_binding ... "
-    rm -f "$fish_binding"
-    echo "OK"
-  fi
 fi
 
 append_line() {
@@ -352,12 +354,23 @@ done
 if [ $key_bindings -eq 1 ] && [[ "$shells" =~ fish ]]; then
   bind_file="${fish_dir}/functions/fish_user_key_bindings.fish"
   if [ ! -e "$bind_file" ]; then
+    mkdir -p "${fish_dir}/functions"
     create_file "$bind_file" \
       'function fish_user_key_bindings' \
-      '  fzf_key_bindings' \
+      '  fzf --fish | source' \
       'end'
   else
-    append_line $update_config "fzf_key_bindings" "$bind_file"
+    echo "Check $bind_file:"
+    lno=$(\grep -nF "fzf_key_bindings" "$bind_file" | sed 's/:.*//' | tr '\n' ' ')
+    if [[ -n $lno ]]; then
+      echo "  ** Found 'fzf_key_bindings' in line #$lno"
+      echo "  ** You have to replace the line to 'fzf --fish | source'"
+      echo
+    else
+      echo "  - Clear"
+      echo
+      append_line $update_config "fzf --fish | source" "$bind_file"
+    fi
   fi
 fi
 

install.ps1

@@ -1,4 +1,4 @@
-$version="0.30.0"
+$version="0.55.0"
 
 $fzf_base=Split-Path -Parent $MyInvocation.MyCommand.Definition
 
@@ -40,7 +40,7 @@ function download {
     return
   }
   cd "$fzf_base\bin"
-  $url="https://github.com/junegunn/fzf/releases/download/$version/$file"
+  $url="https://github.com/junegunn/fzf/releases/download/v$version/$file"
   $temp=$env:TMP + "\fzf.zip"
   [Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12
   if ($PSVersionTable.PSVersion.Major -ge 3) {

main.go

@@ -1,14 +1,101 @@
 package main
 
 import (
+	_ "embed"
+	"fmt"
+	"os"
+	"os/exec"
+	"strings"
+
 	fzf "github.com/junegunn/fzf/src"
 	"github.com/junegunn/fzf/src/protector"
 )
 
-var version string = "0.30"
+var version = "0.55"
-var revision string = "devel"
+var revision = "devel"
+
+//go:embed shell/key-bindings.bash
+var bashKeyBindings []byte
+
+//go:embed shell/completion.bash
+var bashCompletion []byte
+
+//go:embed shell/key-bindings.zsh
+var zshKeyBindings []byte
+
+//go:embed shell/completion.zsh
+var zshCompletion []byte
+
+//go:embed shell/key-bindings.fish
+var fishKeyBindings []byte
+
+//go:embed man/man1/fzf.1
+var manPage []byte
+
+func printScript(label string, content []byte) {
+	fmt.Println("### " + label + " ###")
+	fmt.Println(strings.TrimSpace(string(content)))
+	fmt.Println("### end: " + label + " ###")
+}
+
+func exit(code int, err error) {
+	if code == fzf.ExitError && err != nil {
+		fmt.Fprintln(os.Stderr, err.Error())
+	}
+	os.Exit(code)
+}
 
 func main() {
 	protector.Protect()
-	fzf.Run(fzf.ParseOptions(), version, revision)
+
+	options, err := fzf.ParseOptions(true, os.Args[1:])
+	if err != nil {
+		exit(fzf.ExitError, err)
+		return
+	}
+	if options.Bash {
+		printScript("key-bindings.bash", bashKeyBindings)
+		printScript("completion.bash", bashCompletion)
+		return
+	}
+	if options.Zsh {
+		printScript("key-bindings.zsh", zshKeyBindings)
+		printScript("completion.zsh", zshCompletion)
+		return
+	}
+	if options.Fish {
+		printScript("key-bindings.fish", fishKeyBindings)
+		fmt.Println("fzf_key_bindings")
+		return
+	}
+	if options.Help {
+		fmt.Print(fzf.Usage)
+		return
+	}
+	if options.Version {
+		if len(revision) > 0 {
+			fmt.Printf("%s (%s)\n", version, revision)
+		} else {
+			fmt.Println(version)
+		}
+		return
+	}
+	if options.Man {
+		file := fzf.WriteTemporaryFile([]string{string(manPage)}, "\n")
+		if len(file) == 0 {
+			fmt.Print(string(manPage))
+			return
+		}
+		defer os.Remove(file)
+		cmd := exec.Command("man", file)
+		cmd.Stdin = os.Stdin
+		cmd.Stdout = os.Stdout
+		if err := cmd.Run(); err != nil {
+			fmt.Print(string(manPage))
+		}
+		return
+	}
+
+	code, err := fzf.Run(options)
+	exit(code, err)
 }

man/man1/fzf-tmux.1

@@ -1,7 +1,7 @@
 .ig
 The MIT License (MIT)
 
-Copyright (c) 2013-2021 Junegunn Choi
+Copyright (c) 2013-2024 Junegunn Choi
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
@@ -21,48 +21,48 @@ LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 THE SOFTWARE.
 ..
-.TH fzf-tmux 1 "Apr 2022" "fzf 0.30.0" "fzf-tmux - open fzf in tmux split pane"
+.TH fzf\-tmux 1 "Aug 2024" "fzf 0.55.0" "fzf\-tmux - open fzf in tmux split pane"
 
 .SH NAME
-fzf-tmux - open fzf in tmux split pane
+fzf\-tmux - open fzf in tmux split pane
 
 .SH SYNOPSIS
-.B fzf-tmux [LAYOUT OPTIONS] [--] [FZF OPTIONS]
+.B fzf\-tmux [\fILAYOUT OPTIONS\fR] [\-\-] [\fIFZF OPTIONS\fR]
 
 .SH DESCRIPTION
-fzf-tmux is a wrapper script for fzf that opens fzf in a tmux split pane or in
+fzf\-tmux is a wrapper script for fzf that opens fzf in a tmux split pane or in
 a tmux popup window. It is designed to work just like fzf except that it does
-not take up the whole screen. You can safely use fzf-tmux instead of fzf in
+not take up the whole screen. You can safely use fzf\-tmux instead of fzf in
 your scripts as the extra options will be silently ignored if you're not on
 tmux.
 
 .SH LAYOUT OPTIONS
 
-(default layout: \fB-d 50%\fR)
+(default layout: \fB\-d 50%\fR)
 
 .SS Popup window
 (requires tmux 3.2 or above)
 .TP
-.B "-p [WIDTH[%][,HEIGHT[%]]]"
+.B "\-p [WIDTH[%][,HEIGHT[%]]]"
 .TP
-.B "-w WIDTH[%]"
+.B "\-w WIDTH[%]"
 .TP
-.B "-h WIDTH[%]"
+.B "\-h WIDTH[%]"
 .TP
-.B "-x COL"
+.B "\-x COL"
 .TP
-.B "-y ROW"
+.B "\-y ROW"
 
 .SS Split pane
 .TP
-.B "-u [height[%]]"
+.B "\-u [height[%]]"
 Split above (up)
 .TP
-.B "-d [height[%]]"
+.B "\-d [height[%]]"
 Split below (down)
 .TP
-.B "-l [width[%]]"
+.B "\-l [width[%]]"
 Split left
 .TP
-.B "-r [width[%]]"
+.B "\-r [width[%]]"
 Split right

plugin/fzf.vim

@@ -1,4 +1,4 @@
-" Copyright (c) 2017 Junegunn Choi
+" Copyright (c) 2013-2024 Junegunn Choi
 "
 " MIT License
 "
@@ -59,12 +59,9 @@ if s:is_win
     return iconv(a:str, &encoding, 'cp'.s:codepage)
   endfunction
   function! s:wrap_cmds(cmds)
-    return map([
+    return map(['@echo off']
-      \ '@echo off',
-      \ 'setlocal enabledelayedexpansion']
     \ + (has('gui_running') ? ['set TERM= > nul'] : [])
-    \ + (type(a:cmds) == type([]) ? a:cmds : [a:cmds])
+    \ + (type(a:cmds) == type([]) ? a:cmds : [a:cmds]),
-    \ + ['endlocal'],
     \ '<SID>enc_to_cp(v:val."\r")')
   endfunction
 else
@@ -84,11 +81,21 @@ else
 endif
 
 function! s:shellesc_cmd(arg)
-  let escaped = substitute(a:arg, '[&|<>()@^]', '^&', 'g')
+  let e = '"'
-  let escaped = substitute(escaped, '%', '%%', 'g')
+  let slashes = 0
-  let escaped = substitute(escaped, '"', '\\^&', 'g')
+  for c in split(a:arg, '\zs')
-  let escaped = substitute(escaped, '\(\\\+\)\(\\^\)', '\1\1\2', 'g')
+    if c ==# '\'
-  return '^"'.substitute(escaped, '\(\\\+\)$', '\1\1', '').'^"'
+      let slashes += 1
+    elseif c ==# '"'
+      let e .= repeat('\', slashes + 1)
+      let slashes = 0
+    else
+      let slashes = 0
+    endif
+    let e .= c
+  endfor
+  let e .= repeat('\', slashes) .'"'
+  return substitute(substitute(e, '[&|<>()^!"]', '^&', 'g'), '%', '%%', 'g')
 endfunction
 
 function! fzf#shellescape(arg, ...)
@@ -143,7 +150,7 @@ function! fzf#install()
     if !filereadable(script)
       throw script.' not found'
     endif
-    let script = 'powershell -ExecutionPolicy Bypass -file ' . script
+    let script = 'powershell -ExecutionPolicy Bypass -file ' . shellescape(script)
   else
     let script = s:base_dir.'/install'
     if !executable(script)
@@ -164,7 +171,7 @@ function s:get_version(bin)
   if has_key(s:versions, a:bin)
     return s:versions[a:bin]
   end
-  let command = fzf#shellescape(a:bin) . ' --version --no-height'
+  let command = (&shell =~ 'powershell\|pwsh' ? '&' : '') . s:fzf_call('shellescape', a:bin) . ' --version --no-height'
   let output = systemlist(command)
   if v:shell_error || empty(output)
     return ''
@@ -191,6 +198,7 @@ function! s:compare_binary_versions(a, b)
   return s:compare_versions(s:get_version(a:a), s:get_version(a:b))
 endfunction
 
+let s:min_version = '0.53.0'
 let s:checked = {}
 function! fzf#exec(...)
   if !exists('s:exec')
@@ -218,7 +226,11 @@ function! fzf#exec(...)
     let s:exec = binaries[-1]
   endif
 
-  if a:0 && !has_key(s:checked, a:1)
+  let min_version = s:min_version
+  if a:0 && s:compare_versions(a:1, min_version) > 0
+    let min_version = a:1
+  endif
+  if !has_key(s:checked, min_version)
     let fzf_version = s:get_version(s:exec)
     if empty(fzf_version)
       let message = printf('Failed to run "%s --version"', s:exec)
@@ -226,17 +238,17 @@ function! fzf#exec(...)
       throw message
     end
 
-    if s:compare_versions(fzf_version, a:1) >= 0
+    if s:compare_versions(fzf_version, min_version) >= 0
-      let s:checked[a:1] = 1
+      let s:checked[min_version] = 1
       return s:exec
-    elseif a:0 < 2 && input(printf('You need fzf %s or above. Found: %s. Download binary? (y/n) ', a:1, fzf_version)) =~? '^y'
+    elseif a:0 < 2 && input(printf('You need fzf %s or above. Found: %s. Download binary? (y/n) ', min_version, fzf_version)) =~? '^y'
       let s:versions = {}
       unlet s:exec
       redraw
       call fzf#install()
-      return fzf#exec(a:1, 1)
+      return fzf#exec(min_version, 1)
     else
-      throw printf('You need to upgrade fzf (required: %s or above)', a:1)
+      throw printf('You need to upgrade fzf (required: %s or above)', min_version)
     endif
   endif
 
@@ -320,7 +332,10 @@ function! s:common_sink(action, lines) abort
     " the execution (e.g. `set autochdir` or `autocmd BufEnter * lcd ...`)
     let cwd = exists('w:fzf_pushd') ? w:fzf_pushd.dir : expand('%:p:h')
     for item in a:lines
-      if item[0] != '~' && item !~ (s:is_win ? '^[A-Z]:\' : '^/')
+      if has('win32unix') && item !~ '/'
+        let item = substitute(item, '\', '/', 'g')
+      end
+      if item[0] != '~' && item !~ (s:is_win ? '^\([A-Z]:\)\?\' : '^/')
         let sep = s:is_win ? '\' : '/'
         let item = join([cwd, item], cwd[len(cwd)-1] == sep ? '' : sep)
       endif
@@ -342,7 +357,8 @@ function! s:common_sink(action, lines) abort
 endfunction
 
 function! s:get_color(attr, ...)
-  let gui = !s:is_win && !has('win32unix') && has('termguicolors') && &termguicolors
+  " Force 24 bit colors: g:fzf_force_termguicolors (temporary workaround for https://github.com/junegunn/fzf.vim/issues/1152)
+  let gui = get(g:, 'fzf_force_termguicolors', 0) || (!s:is_win && !has('win32unix') && has('termguicolors') && &termguicolors)
   let fam = gui ? 'gui' : 'cterm'
   let pat = gui ? '^#[a-f0-9]\+' : '^[0-9]\+$'
   for group in a:000
@@ -455,6 +471,32 @@ function! s:writefile(...)
   endif
 endfunction
 
+function! s:extract_option(opts, name)
+  let opt = ''
+  let expect = 0
+  " There are a few cases where this function doesn't work as expected.
+  " Let's just assume such cases are extremely unlikely in real world.
+  "   e.g. --query --border
+  for word in split(a:opts)
+    if expect && word !~ '^"\=-'
+      let opt = opt . ' ' . word
+      let expect = 0
+    elseif word == '--no-'.a:name
+      let opt = ''
+    elseif word =~ '^--'.a:name.'='
+      let opt = word
+    elseif word =~ '^--'.a:name.'$'
+      let opt = word
+      let expect = 1
+    elseif expect
+      let expect = 0
+    endif
+  endfor
+  return opt
+endfunction
+
+let s:need_cmd_window = has('win32unix') && $TERM_PROGRAM ==# 'mintty' && s:compare_versions($TERM_PROGRAM_VERSION, '3.4.5') < 0 && !executable('winpty')
+
 function! fzf#run(...) abort
 try
   let [shell, shellslash, shellcmdflag, shellxquote] = s:use_sh()
@@ -463,7 +505,7 @@ try
   let temps  = { 'result': s:fzf_tempname() }
   let optstr = s:evaluate_opts(get(dict, 'options', ''))
   try
-    let fzf_exec = fzf#shellescape(fzf#exec())
+    let fzf_exec = shellescape(fzf#exec())
   catch
     throw v:exception
   endtry
@@ -476,19 +518,19 @@ try
   endif
 
   if has_key(dict, 'source')
-    let source = remove(dict, 'source')
+    let source = dict.source
     let type = type(source)
     if type == 1
-      let source_command = source
+      let prefix = '('.source.')|'
     elseif type == 3
       let temps.input = s:fzf_tempname()
       call s:writefile(source, temps.input)
-      let source_command = (s:is_win ? 'type ' : 'cat ').fzf#shellescape(temps.input)
+      let prefix = (s:is_win ? 'type ' : 'command cat ').fzf#shellescape(temps.input).'|'
     else
       throw 'Invalid source type'
     endif
   else
-    let source_command = ''
+    let prefix = ''
   endif
 
   let prefer_tmux = get(g:, 'fzf_prefer_tmux', 0) || has_key(dict, 'tmux')
@@ -497,25 +539,23 @@ try
         \ executable('tput') && filereadable('/dev/tty')
   let has_vim8_term = has('terminal') && has('patch-8.0.995')
   let has_nvim_term = has('nvim-0.2.1') || has('nvim') && !s:is_win
-  let use_term = has_nvim_term ||
+  let use_term = has_nvim_term || has_vim8_term
-    \ has_vim8_term && !has('win32unix') && (has('gui_running') || s:is_win || s:present(dict, 'down', 'up', 'left', 'right', 'window'))
+    \ && !s:need_cmd_window
+    \ && (has('gui_running') || s:is_win || s:present(dict, 'down', 'up', 'left', 'right', 'window'))
   let use_tmux = (has_key(dict, 'tmux') || (!use_height && !use_term || prefer_tmux) && !has('win32unix') && s:splittable(dict)) && s:tmux_enabled()
   if prefer_tmux && use_tmux
     let use_height = 0
     let use_term = 0
   endif
   if use_term
-    let optstr .= ' --no-height'
+    let optstr .= ' --no-height --no-tmux'
   elseif use_height
     let height = s:calc_size(&lines, dict.down, dict)
-    let optstr .= ' --height='.height
+    let optstr .= ' --no-tmux --height='.height
   endif
-  let optstr .= s:border_opt(get(dict, 'window', 0))
+  " Respect --border option given in $FZF_DEFAULT_OPTS and 'options'
-  let prev_default_command = $FZF_DEFAULT_COMMAND
+  let optstr = join([s:border_opt(get(dict, 'window', 0)), s:extract_option($FZF_DEFAULT_OPTS, 'border'), optstr])
-  if len(source_command)
+  let command = prefix.(use_tmux ? s:fzf_tmux(dict) : fzf_exec).' '.optstr.' > '.temps.result
-    let $FZF_DEFAULT_COMMAND = source_command
-  endif
-  let command = (use_tmux ? s:fzf_tmux(dict) : fzf_exec).' '.optstr.' > '.temps.result
 
   if use_term
     return s:execute_term(dict, command, temps)
@@ -526,14 +566,6 @@ try
   call s:callback(dict, lines)
   return lines
 finally
-  if exists('source_command') && len(source_command)
-    if len(prev_default_command)
-      let $FZF_DEFAULT_COMMAND = prev_default_command
-    else
-      let $FZF_DEFAULT_COMMAND = ''
-      silent! execute 'unlet $FZF_DEFAULT_COMMAND'
-    endif
-  endif
   let [&shell, &shellslash, &shellcmdflag, &shellxquote] = [shell, shellslash, shellcmdflag, shellxquote]
 endtry
 endfunction
@@ -552,19 +584,21 @@ function! s:fzf_tmux(dict)
   if empty(size)
     for o in ['up', 'down', 'left', 'right']
       if s:present(a:dict, o)
-        let spec = a:dict[o]
+        let size = o . ',' . a:dict[o]
-        if (o == 'up' || o == 'down') && spec[0] == '~'
-          let size = '-'.o[0].s:calc_size(&lines, spec, a:dict)
-        else
-          " Legacy boolean option
-          let size = '-'.o[0].(spec == 1 ? '' : substitute(spec, '^\~', '', ''))
-        endif
         break
       endif
     endfor
   endif
-  return printf('LINES=%d COLUMNS=%d %s %s - --',
+
-    \ &lines, &columns, fzf#shellescape(s:fzf_tmux), size)
+  " Legacy fzf-tmux options
+  if size =~ '-'
+    return printf('LINES=%d COLUMNS=%d %s %s %s --',
+          \ &lines, &columns, fzf#shellescape(s:fzf_tmux), size, (has_key(a:dict, 'source') ? '' : '-'))
+  end
+
+  " Using native --tmux option
+  let in = (has_key(a:dict, 'source') ? '' : ' --force-tty-in')
+  return printf('%s --tmux %s%s', fzf#shellescape(fzf#exec()), size, in)
 endfunction
 
 function! s:splittable(dict)
@@ -636,21 +670,17 @@ else
   let s:launcher = function('s:xterm_launcher')
 endif
 
-function! s:exit_handler(code, command, ...)
+function! s:exit_handler(dict, code, command, ...)
-  if a:code == 130
+  if has_key(a:dict, 'exit')
-    return 0
+    call a:dict.exit(a:code)
-  elseif has('nvim') && a:code == 129
+  endif
-    " When deleting the terminal buffer while fzf is still running,
+  if a:code == 2
-    " Nvim sends SIGHUP.
-    return 0
-  elseif a:code > 1
     call s:error('Error running ' . a:command)
     if !empty(a:000)
       sleep
     endif
-    return 0
   endif
-  return 1
+  return a:code
 endfunction
 
 function! s:execute(dict, command, use_height, temps) abort
@@ -687,21 +717,22 @@ function! s:execute(dict, command, use_height, temps) abort
       call jobstart(cmd, fzf)
       return []
     endif
-  elseif has('win32unix') && $TERM !=# 'cygwin'
+  elseif s:need_cmd_window
     let shellscript = s:fzf_tempname()
     call s:writefile([command], shellscript)
-    let command = 'cmd.exe /C '.fzf#shellescape('set "TERM=" & start /WAIT sh -c '.shellscript)
+    let command = 'start //WAIT sh -c '.shellscript
     let a:temps.shellscript = shellscript
   endif
   if a:use_height
-    call system(printf('tput cup %d > /dev/tty; tput cnorm > /dev/tty; %s < /dev/tty 2> /dev/tty', &lines, command))
+    let stdin = has_key(a:dict, 'source') ? '' : '< /dev/tty'
+    call system(printf('tput cup %d > /dev/tty; tput cnorm > /dev/tty; %s %s 2> /dev/tty', &lines, command, stdin))
   else
     execute 'silent !'.command
   endif
   let exit_status = v:shell_error
   redraw!
   let lines = s:collect(a:temps)
-  return s:exit_handler(exit_status, command) ? lines : []
+  return s:exit_handler(a:dict, exit_status, command) < 2 ? lines : []
 endfunction
 
 function! s:execute_tmux(dict, command, temps) abort
@@ -716,7 +747,7 @@ function! s:execute_tmux(dict, command, temps) abort
   let exit_status = v:shell_error
   redraw!
   let lines = s:collect(a:temps)
-  return s:exit_handler(exit_status, command) ? lines : []
+  return s:exit_handler(a:dict, exit_status, command) < 2 ? lines : []
 endfunction
 
 function! s:calc_size(max, val, dict)
@@ -737,7 +768,7 @@ function! s:calc_size(max, val, dict)
     return size
   endif
   let margin = match(opts, '--inline-info\|--info[^-]\{-}inline') > match(opts, '--no-inline-info\|--info[^-]\{-}\(default\|hidden\)') ? 1 : 2
-  let margin += stridx(opts, '--border') > stridx(opts, '--no-border') ? 2 : 0
+  let margin += match(opts, '--border\([^-]\|$\)') > match(opts, '--no-border\([^-]\|$\)') ? 2 : 0
   if stridx(opts, '--header') > stridx(opts, '--no-header')
     let margin += len(split(opts, "\n"))
   endif
@@ -754,9 +785,9 @@ function! s:border_opt(window)
   endif
 
   " Border style
-  let style = tolower(get(a:window, 'border', 'rounded'))
+  let style = tolower(get(a:window, 'border', ''))
-  if !has_key(a:window, 'border') && !get(a:window, 'rounded', 1)
+  if !has_key(a:window, 'border') && has_key(a:window, 'rounded')
-    let style = 'sharp'
+    let style = a:window.rounded ? 'rounded' : 'sharp'
   endif
   if style == 'none' || style == 'no'
     return ''
@@ -764,7 +795,7 @@ function! s:border_opt(window)
 
   " For --border styles, we need fzf 0.24.0 or above
   call fzf#exec('0.24.0')
-  let opt = ' --border=' . style
+  let opt = ' --border ' . style
   if has_key(a:window, 'highlight')
     let color = s:get_color('fg', a:window.highlight)
     if len(color)
@@ -826,6 +857,17 @@ if exists(':tnoremap')
   tnoremap <silent> <Plug>(fzf-normal) <C-\><C-n>
 endif
 
+let s:warned = 0
+function! s:handle_ambidouble(dict)
+  if &ambiwidth == 'double'
+    let a:dict.env = { 'RUNEWIDTH_EASTASIAN': '1' }
+  elseif !s:warned && $RUNEWIDTH_EASTASIAN == '1' && &ambiwidth !=# 'double'
+    call s:warn("$RUNEWIDTH_EASTASIAN is '1' but &ambiwidth is not 'double'")
+    2sleep
+    let s:warned = 1
+  endif
+endfunction
+
 function! s:execute_term(dict, command, temps) abort
   let winrest = winrestcmd()
   let pbuf = bufnr('')
@@ -871,7 +913,7 @@ function! s:execute_term(dict, command, temps) abort
     endif
 
     let lines = s:collect(self.temps)
-    if !s:exit_handler(a:code, self.command, 1)
+    if s:exit_handler(self.dict, a:code, self.command, 1) >= 2
       return
     endif
 
@@ -895,6 +937,7 @@ function! s:execute_term(dict, command, temps) abort
     endif
     let command .= s:term_marker
     if has('nvim')
+      call s:handle_ambidouble(fzf)
       call termopen(command, fzf)
     else
       let term_opts = {'exit_cb': function(fzf.on_exit)}
@@ -906,7 +949,8 @@ function! s:execute_term(dict, command, temps) abort
       else
         let term_opts.curwin = 1
       endif
-      let fzf.buf = term_start([&shell, &shellcmdflag, command], term_opts)
+      call s:handle_ambidouble(term_opts)
+      keepjumps let fzf.buf = term_start([&shell, &shellcmdflag, command], term_opts)
       if is_popup && exists('#TerminalWinOpen')
         doautocmd <nomodeline> TerminalWinOpen
       endif
@@ -972,16 +1016,16 @@ function! s:callback(dict, lines) abort
 endfunction
 
 if has('nvim')
-  function s:create_popup(hl, opts) abort
+  function s:create_popup(opts) abort
     let buf = nvim_create_buf(v:false, v:true)
     let opts = extend({'relative': 'editor', 'style': 'minimal'}, a:opts)
     let win = nvim_open_win(buf, v:true, opts)
-    call setwinvar(win, '&winhighlight', 'NormalFloat:'..a:hl)
+    silent! call setwinvar(win, '&winhighlight', 'Pmenu:,Normal:Normal')
     call setwinvar(win, '&colorcolumn', '')
     return buf
   endfunction
 else
-  function! s:create_popup(hl, opts) abort
+  function! s:create_popup(opts) abort
     let s:popup_create = {buf -> popup_create(buf, #{
       \ line: a:opts.row,
       \ col: a:opts.col,
@@ -1016,7 +1060,7 @@ function! s:popup(opts) abort
   let row += !has('nvim')
   let col += !has('nvim')
 
-  call s:create_popup('Normal', {
+  call s:create_popup({
     \ 'row': row, 'col': col, 'width': width, 'height': height
   \ })
 endfunction

shell/completion.bash

@@ -4,40 +4,48 @@
 #  / __/ / /_/ __/
 # /_/   /___/_/ completion.bash
 #
-# - $FZF_TMUX               (default: 0)
+# - $FZF_TMUX                 (default: 0)
-# - $FZF_TMUX_OPTS          (default: empty)
+# - $FZF_TMUX_OPTS            (default: empty)
-# - $FZF_COMPLETION_TRIGGER (default: '**')
+# - $FZF_COMPLETION_TRIGGER   (default: '**')
-# - $FZF_COMPLETION_OPTS    (default: empty)
+# - $FZF_COMPLETION_OPTS      (default: empty)
+# - $FZF_COMPLETION_PATH_OPTS (default: empty)
+# - $FZF_COMPLETION_DIR_OPTS  (default: empty)
 
 if [[ $- =~ i ]]; then
 
-# To use custom commands instead of find, override _fzf_compgen_{path,dir}
-if ! declare -f _fzf_compgen_path > /dev/null; then
-  _fzf_compgen_path() {
-    echo "$1"
-    command find -L "$1" \
-      -name .git -prune -o -name .hg -prune -o -name .svn -prune -o \( -type d -o -type f -o -type l \) \
-      -a -not -path "$1" -print 2> /dev/null | sed 's@^\./@@'
-  }
-fi
 
-if ! declare -f _fzf_compgen_dir > /dev/null; then
+# To use custom commands instead of find, override _fzf_compgen_{path,dir}
-  _fzf_compgen_dir() {
+#
-    command find -L "$1" \
+#   _fzf_compgen_path() {
-      -name .git -prune -o -name .hg -prune -o -name .svn -prune -o -type d \
+#     echo "$1"
-      -a -not -path "$1" -print 2> /dev/null | sed 's@^\./@@'
+#     command find -L "$1" \
-  }
+#       -name .git -prune -o -name .hg -prune -o -name .svn -prune -o \( -type d -o -type f -o -type l \) \
-fi
+#       -a -not -path "$1" -print 2> /dev/null | command sed 's@^\./@@'
+#   }
+#
+#   _fzf_compgen_dir() {
+#     command find -L "$1" \
+#       -name .git -prune -o -name .hg -prune -o -name .svn -prune -o -type d \
+#       -a -not -path "$1" -print 2> /dev/null | command sed 's@^\./@@'
+#   }
 
 ###########################################################
 
 # To redraw line after fzf closes (printf '\e[5n')
 bind '"\e[0n": redraw-current-line' 2> /dev/null
 
+__fzf_defaults() {
+  # $1: Prepend to FZF_DEFAULT_OPTS_FILE and FZF_DEFAULT_OPTS
+  # $2: Append to FZF_DEFAULT_OPTS_FILE and FZF_DEFAULT_OPTS
+  echo "--height ${FZF_TMUX_HEIGHT:-40%} --bind=ctrl-z:ignore $1"
+  command cat "${FZF_DEFAULT_OPTS_FILE-}" 2> /dev/null
+  echo "${FZF_DEFAULT_OPTS-} $2"
+}
+
 __fzf_comprun() {
   if [[ "$(type -t _fzf_comprun 2>&1)" = function ]]; then
     _fzf_comprun "$@"
-  elif [[ -n "$TMUX_PANE" ]] && { [[ "${FZF_TMUX:-0}" != 0 ]] || [[ -n "$FZF_TMUX_OPTS" ]]; }; then
+  elif [[ -n "${TMUX_PANE-}" ]] && { [[ "${FZF_TMUX:-0}" != 0 ]] || [[ -n "${FZF_TMUX_OPTS-}" ]]; }; then
     shift
     fzf-tmux ${FZF_TMUX_OPTS:--d${FZF_TMUX_HEIGHT:-40%}} -- "$@"
   else
@@ -55,72 +63,181 @@ __fzf_orig_completion() {
       cmd="${BASH_REMATCH[3]}"
       [[ "$f" = _fzf_* ]] && continue
       printf -v "_fzf_orig_completion_${cmd//[^A-Za-z0-9_]/_}" "%s" "${comp} %s ${cmd} #${f}"
-      if [[ "$l" = *" -o nospace "* ]] && [[ ! "$__fzf_nospace_commands" = *" $cmd "* ]]; then
+      if [[ "$l" = *" -o nospace "* ]] && [[ ! "${__fzf_nospace_commands-}" = *" $cmd "* ]]; then
-        __fzf_nospace_commands="$__fzf_nospace_commands $cmd "
+        __fzf_nospace_commands="${__fzf_nospace_commands-} $cmd "
       fi
     fi
   done
 }
 
+# @param $1 cmd - Command name for which the original completion is searched
+# @var[out] REPLY - Original function name is returned
+__fzf_orig_completion_get_orig_func() {
+  local cmd orig_var orig
+  cmd=$1
+  orig_var="_fzf_orig_completion_${cmd//[^A-Za-z0-9_]/_}"
+  orig="${!orig_var-}"
+  REPLY="${orig##*#}"
+  [[ $REPLY ]] && type "$REPLY" &> /dev/null
+}
+
+# @param $1 cmd - Command name for which the original completion is searched
+# @param $2 func - Fzf's completion function to replace the original function
+# @var[out] REPLY - Completion setting is returned as a string to "eval"
+__fzf_orig_completion_instantiate() {
+  local cmd func orig_var orig
+  cmd=$1
+  func=$2
+  orig_var="_fzf_orig_completion_${cmd//[^A-Za-z0-9_]/_}"
+  orig="${!orig_var-}"
+  orig="${orig%#*}"
+  [[ $orig == *' %s '* ]] || return 1
+  printf -v REPLY "$orig" "$func"
+}
+
 _fzf_opts_completion() {
   local cur prev opts
   COMPREPLY=()
   cur="${COMP_WORDS[COMP_CWORD]}"
   prev="${COMP_WORDS[COMP_CWORD-1]}"
   opts="
-    -x --extended
+    +c --no-color
-    -e --exact
+    +i --no-ignore-case
-    --algo
-    -i +i
-    -n --nth
-    --with-nth
-    -d --delimiter
     +s --no-sort
-    --tac
+    +x --no-extended
-    --tiebreak
-    -m --multi
-    --no-mouse
-    --bind
-    --cycle
-    --no-hscroll
-    --jump-labels
-    --height
-    --literal
-    --reverse
-    --margin
-    --inline-info
-    --prompt
-    --pointer
-    --marker
-    --header
-    --header-lines
     --ansi
-    --tabstop
+    --bash
+    --bind
+    --border
+    --border-label
+    --border-label-pos
     --color
-    --no-bold
+    --cycle
+    --disabled
+    --ellipsis
+    --expect
+    --filepath-word
+    --fish
+    --header
+    --header-first
+    --header-lines
+    --height
+    --highlight-line
     --history
     --history-size
+    --hscroll-off
+    --info
+    --jump-labels
+    --keep-right
+    --layout
+    --listen
+    --listen-unsafe
+    --literal
+    --man
+    --margin
+    --marker
+    --min-height
+    --no-bold
+    --no-clear
+    --no-hscroll
+    --no-mouse
+    --no-scrollbar
+    --no-separator
+    --no-unicode
+    --padding
+    --pointer
     --preview
+    --preview-label
+    --preview-label-pos
     --preview-window
-    -q --query
-    -1 --select-1
-    -0 --exit-0
-    -f --filter
     --print-query
-    --expect
+    --print0
-    --sync"
+    --prompt
+    --read0
+    --reverse
+    --scheme
+    --scroll-off
+    --separator
+    --sync
+    --tabstop
+    --tac
+    --tiebreak
+    --tmux
+    --track
+    --version
+    --with-nth
+    --with-shell
+    --wrap
+    --zsh
+    -0 --exit-0
+    -1 --select-1
+    -d --delimiter
+    -e --exact
+    -f --filter
+    -h --help
+    -i --ignore-case
+    -m --multi
+    -n --nth
+    -q --query
+    --"
 
   case "${prev}" in
+  --scheme)
+    COMPREPLY=( $(compgen -W "default path history" -- "$cur") )
+    return 0
+    ;;
   --tiebreak)
-    COMPREPLY=( $(compgen -W "length begin end index" -- "$cur") )
+    COMPREPLY=( $(compgen -W "length chunk begin end index" -- "$cur") )
     return 0
     ;;
   --color)
-    COMPREPLY=( $(compgen -W "dark light 16 bw" -- "$cur") )
+    COMPREPLY=( $(compgen -W "dark light 16 bw no" -- "$cur") )
     return 0
     ;;
-  --history)
+  --layout)
-    COMPREPLY=()
+    COMPREPLY=( $(compgen -W "default reverse reverse-list" -- "$cur") )
+    return 0
+    ;;
+  --info)
+    COMPREPLY=( $(compgen -W "default right hidden inline inline-right" -- "$cur") )
+    return 0
+    ;;
+  --preview-window)
+    COMPREPLY=( $(compgen -W "
+      default
+      hidden
+      nohidden
+      wrap
+      nowrap
+      cycle
+      nocycle
+      up top
+      down bottom
+      left
+      right
+      rounded border border-rounded
+      sharp border-sharp
+      border-bold
+      border-block
+      border-thinblock
+      border-double
+      noborder border-none
+      border-horizontal
+      border-vertical
+      border-up border-top
+      border-down border-bottom
+      border-left
+      border-right
+      follow
+      nofollow" -- "$cur") )
+    return 0
+    ;;
+  --border)
+    COMPREPLY=( $(compgen -W "rounded sharp bold block thinblock double horizontal vertical top bottom left right none" -- "$cur") )
+    return 0
+    ;;
+  --border-label-pos|--preview-label-pos)
+    COMPREPLY=( $(compgen -W "center bottom top" -- "$cur") )
     return 0
     ;;
   esac
@@ -134,41 +251,61 @@ _fzf_opts_completion() {
 }
 
 _fzf_handle_dynamic_completion() {
-  local cmd orig_var orig ret orig_cmd orig_complete
+  local cmd ret REPLY orig_cmd orig_complete
   cmd="$1"
   shift
   orig_cmd="$1"
-  orig_var="_fzf_orig_completion_$cmd"
+  if __fzf_orig_completion_get_orig_func "$cmd"; then
-  orig="${!orig_var##*#}"
+    "$REPLY" "$@"
-  if [[ -n "$orig" ]] && type "$orig" > /dev/null 2>&1; then
+  elif [[ -n "${_fzf_completion_loader-}" ]]; then
-    $orig "$@"
-  elif [[ -n "$_fzf_completion_loader" ]]; then
     orig_complete=$(complete -p "$orig_cmd" 2> /dev/null)
-    _completion_loader "$@"
+    $_fzf_completion_loader "$@"
     ret=$?
     # _completion_loader may not have updated completion for the command
     if [[ "$(complete -p "$orig_cmd" 2> /dev/null)" != "$orig_complete" ]]; then
       __fzf_orig_completion < <(complete -p "$orig_cmd" 2> /dev/null)
-      if [[ "$__fzf_nospace_commands" = *" $orig_cmd "* ]]; then
+      __fzf_orig_completion_get_orig_func "$cmd" || ret=1
+
+      # Update orig_complete by _fzf_orig_completion entry
+      [[ $orig_complete =~ ' -F '(_fzf_[^ ]+)' ' ]] &&
+        __fzf_orig_completion_instantiate "$cmd" "${BASH_REMATCH[1]}" &&
+        orig_complete=$REPLY
+
+      if [[ "${__fzf_nospace_commands-}" = *" $orig_cmd "* ]]; then
         eval "${orig_complete/ -F / -o nospace -F }"
       else
         eval "$orig_complete"
       fi
     fi
+    [[ $ret -eq 0 ]] && return 124
     return $ret
   fi
 }
 
 __fzf_generic_path_completion() {
-  local cur base dir leftover matches trigger cmd
+  local cur base dir leftover matches trigger cmd rest
-  cmd="${COMP_WORDS[0]//[^A-Za-z0-9_=]/_}"
+  cmd="${COMP_WORDS[0]}"
+  if [[ $cmd == \\* ]]; then
+    cmd="${cmd:1}"
+  fi
   COMPREPLY=()
   trigger=${FZF_COMPLETION_TRIGGER-'**'}
-  cur="${COMP_WORDS[COMP_CWORD]}"
+  [[ $COMP_CWORD -ge 0 ]] && cur="${COMP_WORDS[COMP_CWORD]}"
-  if [[ "$cur" == *"$trigger" ]]; then
+  if [[ "$cur" == *"$trigger" ]] && [[ $cur != *'$('* ]] && [[ $cur != *':='* ]] && [[ $cur != *'`'* ]]; then
     base=${cur:0:${#cur}-${#trigger}}
-    eval "base=$base"
+    eval "base=$base" 2> /dev/null || return
 
+    # Try to leverage existing completion
+    rest=("${@:4}")
+    unset 'rest[${#rest[@]}-2]'
+    COMP_LINE=${COMP_LINE:0:${#COMP_LINE}-${#trigger}}
+    COMP_POINT=$((COMP_POINT-${#trigger}))
+    COMP_WORDS[$COMP_CWORD]=$base
+    _fzf_handle_dynamic_completion "$cmd" "${rest[@]}"
+    [[ $? -ne 0 ]] &&
+      _fzf_handle_dynamic_completion "$cmd" "${rest[@]}"
+
+    dir=
     [[ $base = *"/"* ]] && dir="$base"
     while true; do
       if [[ -z "$dir" ]] || [[ -d "$dir" ]]; then
@@ -176,11 +313,30 @@ __fzf_generic_path_completion() {
         leftover=${leftover/#\/}
         [[ -z "$dir" ]] && dir='.'
         [[ "$dir" != "/" ]] && dir="${dir/%\//}"
-        matches=$(eval "$1 $(printf %q "$dir")" | FZF_DEFAULT_OPTS="--height ${FZF_TMUX_HEIGHT:-40%} --reverse --bind=ctrl-z:ignore $FZF_DEFAULT_OPTS $FZF_COMPLETION_OPTS $2" __fzf_comprun "$4" -q "$leftover" | while read -r item; do
+        matches=$(
-          printf "%q$3 " "$item"
+          export FZF_DEFAULT_OPTS=$(__fzf_defaults "--reverse --scheme=path" "${FZF_COMPLETION_OPTS-} $2")
-        done)
+          unset FZF_DEFAULT_COMMAND FZF_DEFAULT_OPTS_FILE
+          if [[ ${#COMPREPLY[@]} -gt 0 ]]; then
+            for h in "${COMPREPLY[@]}"; do
+              echo "$h"
+            done | command sort -u | __fzf_comprun "$4" -q "$leftover"
+          elif declare -F "$1" > /dev/null; then
+            eval "$1 $(printf %q "$dir")" | __fzf_comprun "$4" -q "$leftover"
+          else
+            if [[ $1 =~ dir ]]; then
+              walker=dir,follow
+              rest=${FZF_COMPLETION_DIR_OPTS-}
+            else
+              walker=file,dir,follow,hidden
+              rest=${FZF_COMPLETION_PATH_OPTS-}
+            fi
+            __fzf_comprun "$4" -q "$leftover" --walker "$walker" --walker-root="$dir" $rest
+          fi | while read -r item; do
+            printf "%q " "${item%$3}$3"
+          done
+        )
         matches=${matches% }
-        [[ -z "$3" ]] && [[ "$__fzf_nospace_commands" = *" ${COMP_WORDS[0]} "* ]] && matches="$matches "
+        [[ -z "$3" ]] && [[ "${__fzf_nospace_commands-}" = *" ${COMP_WORDS[0]} "* ]] && matches="$matches "
         if [[ -n "$matches" ]]; then
           COMPREPLY=( "$matches" )
         else
@@ -189,7 +345,7 @@ __fzf_generic_path_completion() {
         printf '\e[5n'
         return 0
       fi
-      dir=$(dirname "$dir")
+      dir=$(command dirname "$dir")
       [[ "$dir" =~ /$ ]] || dir="$dir"/
     done
   else
@@ -223,16 +379,32 @@ _fzf_complete() {
   fi
 
   local cur selected trigger cmd post
-  post="$(caller 0 | awk '{print $2}')_post"
+  post="$(caller 0 | command awk '{print $2}')_post"
-  type -t "$post" > /dev/null 2>&1 || post=cat
+  type -t "$post" > /dev/null 2>&1 || post='command cat'
 
-  cmd="${COMP_WORDS[0]//[^A-Za-z0-9_=]/_}"
   trigger=${FZF_COMPLETION_TRIGGER-'**'}
+  cmd="${COMP_WORDS[0]}"
   cur="${COMP_WORDS[COMP_CWORD]}"
-  if [[ "$cur" == *"$trigger" ]]; then
+  if [[ "$cur" == *"$trigger" ]] && [[ $cur != *'$('* ]] && [[ $cur != *':='* ]] && [[ $cur != *'`'* ]]; then
     cur=${cur:0:${#cur}-${#trigger}}
 
-    selected=$(FZF_DEFAULT_OPTS="--height ${FZF_TMUX_HEIGHT:-40%} --reverse --bind=ctrl-z:ignore $FZF_DEFAULT_OPTS $FZF_COMPLETION_OPTS $str_arg" __fzf_comprun "${rest[0]}" "${args[@]}" -q "$cur" | $post | tr '\n' ' ')
+    # Try to leverage existing completion
+    COMP_LINE=${COMP_LINE:0:${#COMP_LINE}-${#trigger}}
+    COMP_POINT=$((COMP_POINT-${#trigger}))
+    unset 'rest[${#rest[@]}-2]'
+    _fzf_handle_dynamic_completion "$cmd" "${rest[@]}"
+    [[ $? -ne 0 ]] &&
+      _fzf_handle_dynamic_completion "$cmd" "${rest[@]}"
+
+    selected=$(
+      (if [[ ${#COMPREPLY[@]} -gt 0 ]]; then
+        for h in "${COMPREPLY[@]}"; do
+          echo "$h"
+        done
+      fi; cat) | command sort -u |
+      FZF_DEFAULT_OPTS=$(__fzf_defaults "--reverse" "${FZF_COMPLETION_OPTS-} $str_arg") \
+      FZF_DEFAULT_OPTS_FILE='' \
+        __fzf_comprun "${rest[0]}" "${args[@]}" -q "$cur" | $post | command tr '\n' ' ')
     selected=${selected% } # Strip trailing space not to repeat "-o nospace"
     if [[ -n "$selected" ]]; then
       COMPREPLY=("$selected")
@@ -264,33 +436,69 @@ _fzf_complete_kill() {
 }
 
 _fzf_proc_completion() {
-  _fzf_complete -m --preview 'echo {}' --preview-window down:3:wrap --min-height 15 -- "$@" < <(
+  _fzf_complete -m --header-lines=1 --no-preview --wrap -- "$@" < <(
-    command ps -ef | sed 1d
+    command ps -eo user,pid,ppid,start,time,command 2> /dev/null ||
+      command ps -eo user,pid,ppid,time,args 2> /dev/null || # For BusyBox
+      command ps --everyone --full --windows # For cygwin
   )
 }
 
 _fzf_proc_completion_post() {
-  awk '{print $2}'
+  command awk '{print $2}'
 }
 
+# To use custom hostname lists, override __fzf_list_hosts.
+# The function is expected to print hostnames, one per line as well as in the
+# desired sorting and with any duplicates removed, to standard output.
+#
+# e.g.
+#   # Use bash-completions’s _known_hosts_real() for getting the list of hosts
+#   __fzf_list_hosts() {
+#     # Set the local attribute for any non-local variable that is set by _known_hosts_real()
+#     local COMPREPLY=()
+#     _known_hosts_real ''
+#     printf '%s\n' "${COMPREPLY[@]}" | command sort -u --version-sort
+#   }
+if ! declare -F __fzf_list_hosts > /dev/null; then
+  __fzf_list_hosts() {
+    command cat <(command tail -n +1 ~/.ssh/config ~/.ssh/config.d/* /etc/ssh/ssh_config 2> /dev/null | command grep -i '^\s*host\(name\)\? ' | command awk '{for (i = 2; i <= NF; i++) print $1 " " $i}' | command grep -v '[*?%]') \
+      <(command grep -oE '^[[a-z0-9.,:-]+' ~/.ssh/known_hosts 2> /dev/null | command tr ',' '\n' | command tr -d '[' | command awk '{ print $1 " " $1 }') \
+      <(command grep -v '^\s*\(#\|$\)' /etc/hosts 2> /dev/null | command grep -Fv '0.0.0.0' | command sed 's/#.*//') |
+      command awk '{for (i = 2; i <= NF; i++) print $i}' | command sort -u
+  }
+fi
+
 _fzf_host_completion() {
-  _fzf_complete +m -- "$@" < <(
+  _fzf_complete +m -- "$@" < <(__fzf_list_hosts)
-    command cat <(command tail -n +1 ~/.ssh/config ~/.ssh/config.d/* /etc/ssh/ssh_config 2> /dev/null | command grep -i '^\s*host\(name\)\? ' | awk '{for (i = 2; i <= NF; i++) print $1 " " $i}' | command grep -v '[*?]') \
+}
-        <(command grep -oE '^[[a-z0-9.,:-]+' ~/.ssh/known_hosts | tr ',' '\n' | tr -d '[' | awk '{ print $1 " " $1 }') \
+
-        <(command grep -v '^\s*\(#\|$\)' /etc/hosts | command grep -Fv '0.0.0.0') |
+# Values for $1 $2 $3 are described here
-        awk '{if (length($2) > 0) {print $2}}' | sort -u
+# https://www.gnu.org/software/bash/manual/html_node/Programmable-Completion.html
-  )
+# > the first argument ($1) is the name of the command whose arguments are being completed,
+# > the second argument ($2) is the word being completed,
+# > and the third argument ($3) is the word preceding the word being completed on the current command line.
+_fzf_complete_ssh() {
+  case $3 in
+    -i|-F|-E)
+      _fzf_path_completion "$@"
+      ;;
+    *)
+      local user=
+      [[ "$2" =~ '@' ]] && user="${2%%@*}@"
+      _fzf_complete +m -- "$@" < <(__fzf_list_hosts | command awk -v user="$user" '{print user $0}')
+      ;;
+  esac
 }
 
 _fzf_var_completion() {
   _fzf_complete -m -- "$@" < <(
-    declare -xp | sed 's/=.*//' | sed 's/.* //'
+    declare -xp | command sed -En 's|^declare [^ ]+ ([^=]+).*|\1|p'
   )
 }
 
 _fzf_alias_completion() {
   _fzf_complete -m -- "$@" < <(
-    alias | sed 's/=.*//' | sed 's/.* //'
+    alias | command sed -En 's|^alias ([^=]+).*|\1|p'
   )
 }
 
@@ -301,34 +509,69 @@ complete -o default -F _fzf_opts_completion fzf
 # fzf-tmux specific options (like `-w WIDTH`) are left as a future patch.
 complete -o default -F _fzf_opts_completion fzf-tmux
 
-d_cmds="${FZF_COMPLETION_DIR_COMMANDS:-cd pushd rmdir}"
+# Default path completion
-a_cmds="
+__fzf_default_completion() {
-  awk cat diff diff3
+  __fzf_generic_path_completion _fzf_compgen_path "-m" "" "$@"
-  emacs emacsclient ex file ftp g++ gcc gvim head hg java
+
+  # Dynamic completion loader has updated the completion for the command
+  if [[ $? -eq 124 ]]; then
+    # We trigger _fzf_setup_completion so that fuzzy completion for the command
+    # still works. However, loader can update the completion for multiple
+    # commands at once, and fuzzy completion will no longer work for those
+    # other commands. e.g. pytest -> py.test, pytest-2, pytest-3, etc
+    _fzf_setup_completion path "$1"
+    return 124
+  fi
+}
+
+# Set fuzzy path completion as the default completion for all commands.
+# We can't set up default completion,
+# 1. if it's already set up by another script
+# 2. or if the current version of bash doesn't support -D option
+complete | command grep -q __fzf_default_completion ||
+  complete | command grep -- '-D$' | command grep -qv _comp_complete_load ||
+  complete -D -F __fzf_default_completion -o default -o bashdefault 2> /dev/null
+
+d_cmds="${FZF_COMPLETION_DIR_COMMANDS-cd pushd rmdir}"
+
+# NOTE: $FZF_COMPLETION_PATH_COMMANDS and $FZF_COMPLETION_VAR_COMMANDS are
+# undocumented and subject to change in the future.
+#
+# NOTE: Although we have default completion, we still need to set up completion
+# for each command in case they already have completion set up by another script.
+a_cmds="${FZF_COMPLETION_PATH_COMMANDS-"
+  awk bat cat code diff diff3
+  emacs emacsclient ex file ftp g++ gcc gvim head hg hx java
   javac ld less more mvim nvim patch perl python ruby
   sed sftp sort source tail tee uniq vi view vim wc xdg-open
   basename bunzip2 bzip2 chmod chown curl cp dirname du
   find git grep gunzip gzip hg jar
   ln ls mv open rm rsync scp
-  svn tar unzip zip"
+  svn tar unzip zip"}"
+v_cmds="${FZF_COMPLETION_VAR_COMMANDS-export unset printenv}"
 
 # Preserve existing completion
-__fzf_orig_completion < <(complete -p $d_cmds $a_cmds 2> /dev/null)
+__fzf_orig_completion < <(complete -p $d_cmds $a_cmds $v_cmds unalias kill ssh 2> /dev/null)
 
-if type _completion_loader > /dev/null 2>&1; then
+if type _comp_load > /dev/null 2>&1; then
-  _fzf_completion_loader=1
+  # _comp_load was added in bash-completion 2.12 to replace _completion_loader.
+  # We use it without -D option so that it does not use _comp_complete_minimal as the fallback.
+  _fzf_completion_loader=_comp_load
+elif type __load_completion > /dev/null 2>&1; then
+  # In bash-completion 2.11, _completion_loader internally calls __load_completion
+  # and if it returns a non-zero status, it sets the default 'minimal' completion.
+  _fzf_completion_loader=__load_completion
+elif type _completion_loader > /dev/null 2>&1; then
+  _fzf_completion_loader=_completion_loader
 fi
 
 __fzf_defc() {
-  local cmd func opts orig_var orig def
+  local cmd func opts REPLY
   cmd="$1"
   func="$2"
   opts="$3"
-  orig_var="_fzf_orig_completion_${cmd//[^A-Za-z0-9_]/_}"
+  if __fzf_orig_completion_instantiate "$cmd" "$func"; then
-  orig="${!orig_var}"
+    eval "$REPLY"
-  if [[ -n "$orig" ]]; then
-    printf -v def "$orig" "$func"
-    eval "$def"
   else
     complete -F "$func" $opts "$cmd"
   fi
@@ -341,10 +584,24 @@ done
 
 # Directory
 for cmd in $d_cmds; do
-  __fzf_defc "$cmd" _fzf_dir_completion "-o nospace -o dirnames"
+  __fzf_defc "$cmd" _fzf_dir_completion "-o bashdefault -o nospace -o dirnames"
 done
 
-unset cmd d_cmds a_cmds
+# Variables
+for cmd in $v_cmds; do
+  __fzf_defc "$cmd" _fzf_var_completion "-o default -o nospace -v"
+done
+
+# Aliases
+__fzf_defc unalias _fzf_alias_completion "-a"
+
+# Processes
+__fzf_defc kill _fzf_proc_completion "-o default -o bashdefault"
+
+# ssh
+__fzf_defc ssh _fzf_complete_ssh "-o default -o bashdefault"
+
+unset cmd d_cmds a_cmds v_cmds
 
 _fzf_setup_completion() {
   local kind fn cmd
@@ -366,10 +623,4 @@ _fzf_setup_completion() {
   done
 }
 
-# Environment variables / Aliases / Hosts / Process
-_fzf_setup_completion 'var'   export unset
-_fzf_setup_completion 'alias' unalias
-_fzf_setup_completion 'host'  ssh telnet
-_fzf_setup_completion 'proc'  kill
-
 fi

shell/completion.zsh

@@ -4,10 +4,13 @@
 #  / __/ / /_/ __/
 # /_/   /___/_/ completion.zsh
 #
-# - $FZF_TMUX               (default: 0)
+# - $FZF_TMUX                 (default: 0)
-# - $FZF_TMUX_OPTS          (default: '-d 40%')
+# - $FZF_TMUX_OPTS            (default: empty)
-# - $FZF_COMPLETION_TRIGGER (default: '**')
+# - $FZF_COMPLETION_TRIGGER   (default: '**')
-# - $FZF_COMPLETION_OPTS    (default: empty)
+# - $FZF_COMPLETION_OPTS      (default: empty)
+# - $FZF_COMPLETION_PATH_OPTS (default: empty)
+# - $FZF_COMPLETION_DIR_OPTS  (default: empty)
+
 
 # Both branches of the following `if` do the same thing -- define
 # __fzf_completion_options such that `eval $__fzf_completion_options` sets
@@ -67,41 +70,46 @@ fi
 # control. There are several others that could wreck havoc if they are set
 # to values we don't expect. With the following `emulate` command we
 # sidestep this issue entirely.
-'emulate' 'zsh' '-o' 'no_aliases'
+'builtin' 'emulate' 'zsh' && 'builtin' 'setopt' 'no_aliases'
 
 # This brace is the start of try-always block. The `always` part is like
 # `finally` in lesser languages. We use it to *always* restore user options.
 {
-
+# The 'emulate' command should not be placed inside the interactive if check;
-# Bail out if not interactive shell.
+# placing it there fails to disable alias expansion. See #3731.
-[[ -o interactive ]] || return 0
+if [[ -o interactive ]]; then
 
 # To use custom commands instead of find, override _fzf_compgen_{path,dir}
-if ! declare -f _fzf_compgen_path > /dev/null; then
+#
-  _fzf_compgen_path() {
+#   _fzf_compgen_path() {
-    echo "$1"
+#     echo "$1"
-    command find -L "$1" \
+#     command find -L "$1" \
-      -name .git -prune -o -name .hg -prune -o -name .svn -prune -o \( -type d -o -type f -o -type l \) \
+#       -name .git -prune -o -name .hg -prune -o -name .svn -prune -o \( -type d -o -type f -o -type l \) \
-      -a -not -path "$1" -print 2> /dev/null | sed 's@^\./@@'
+#       -a -not -path "$1" -print 2> /dev/null | sed 's@^\./@@'
-  }
+#   }
-fi
+#
-
+#   _fzf_compgen_dir() {
-if ! declare -f _fzf_compgen_dir > /dev/null; then
+#     command find -L "$1" \
-  _fzf_compgen_dir() {
+#       -name .git -prune -o -name .hg -prune -o -name .svn -prune -o -type d \
-    command find -L "$1" \
+#       -a -not -path "$1" -print 2> /dev/null | sed 's@^\./@@'
-      -name .git -prune -o -name .hg -prune -o -name .svn -prune -o -type d \
+#   }
-      -a -not -path "$1" -print 2> /dev/null | sed 's@^\./@@'
-  }
-fi
 
 ###########################################################
 
+__fzf_defaults() {
+  # $1: Prepend to FZF_DEFAULT_OPTS_FILE and FZF_DEFAULT_OPTS
+  # $2: Append to FZF_DEFAULT_OPTS_FILE and FZF_DEFAULT_OPTS
+  echo "--height ${FZF_TMUX_HEIGHT:-40%} --bind=ctrl-z:ignore $1"
+  command cat "${FZF_DEFAULT_OPTS_FILE-}" 2> /dev/null
+  echo "${FZF_DEFAULT_OPTS-} $2"
+}
+
 __fzf_comprun() {
   if [[ "$(type _fzf_comprun 2>&1)" =~ function ]]; then
     _fzf_comprun "$@"
-  elif [ -n "$TMUX_PANE" ] && { [ "${FZF_TMUX:-0}" != 0 ] || [ -n "$FZF_TMUX_OPTS" ]; }; then
+  elif [ -n "${TMUX_PANE-}" ] && { [ "${FZF_TMUX:-0}" != 0 ] || [ -n "${FZF_TMUX_OPTS-}" ]; }; then
     shift
-    if [ -n "$FZF_TMUX_OPTS" ]; then
+    if [ -n "${FZF_TMUX_OPTS-}" ]; then
       fzf-tmux ${(Q)${(Z+n+)FZF_TMUX_OPTS}} -- "$@"
     else
       fzf-tmux -d ${FZF_TMUX_HEIGHT:-40%} -- "$@"
@@ -137,7 +145,10 @@ __fzf_generic_path_completion() {
   tail=$6
 
   setopt localoptions nonomatch
-  eval "base=$base"
+  if [[ $base = *'$('* ]] || [[ $base = *'<('* ]] || [[ $base = *'>('* ]] || [[ $base = *':='* ]] || [[ $base = *'`'* ]]; then
+    return
+  fi
+  eval "base=$base" 2> /dev/null || return
   [[ $base = *"/"* ]] && dir="$base"
   while [ 1 ]; do
     if [[ -z "$dir" || -d ${dir} ]]; then
@@ -145,9 +156,26 @@ __fzf_generic_path_completion() {
       leftover=${leftover/#\/}
       [ -z "$dir" ] && dir='.'
       [ "$dir" != "/" ] && dir="${dir/%\//}"
-      matches=$(eval "$compgen $(printf %q "$dir")" | FZF_DEFAULT_OPTS="--height ${FZF_TMUX_HEIGHT:-40%} --reverse --bind=ctrl-z:ignore $FZF_DEFAULT_OPTS $FZF_COMPLETION_OPTS" __fzf_comprun "$cmd" ${(Q)${(Z+n+)fzf_opts}} -q "$leftover" | while read item; do
+      matches=$(
-        echo -n "${(q)item}$suffix "
+        export FZF_DEFAULT_OPTS
-      done)
+        FZF_DEFAULT_OPTS=$(__fzf_defaults "--reverse --scheme=path" "${FZF_COMPLETION_OPTS-}")
+        unset FZF_DEFAULT_COMMAND FZF_DEFAULT_OPTS_FILE
+        if declare -f "$compgen" > /dev/null; then
+          eval "$compgen $(printf %q "$dir")" | __fzf_comprun "$cmd" ${(Q)${(Z+n+)fzf_opts}} -q "$leftover"
+        else
+          if [[ $compgen =~ dir ]]; then
+            walker=dir,follow
+            rest=${FZF_COMPLETION_DIR_OPTS-}
+          else
+            walker=file,dir,follow,hidden
+            rest=${FZF_COMPLETION_PATH_OPTS-}
+          fi
+          __fzf_comprun "$cmd" ${(Q)${(Z+n+)fzf_opts}} -q "$leftover" --walker "$walker" --walker-root="$dir" ${(Q)${(Z+n+)rest}} < /dev/tty
+        fi | while read -r item; do
+          item="${item%$suffix}$suffix"
+          echo -n -E "${(q)item} "
+        done
+      )
       matches=${matches% }
       if [ -n "$matches" ]; then
         LBUFFER="$lbuf$matches$tail"
@@ -170,11 +198,11 @@ _fzf_dir_completion() {
     "" "/" ""
 }
 
-_fzf_feed_fifo() (
+_fzf_feed_fifo() {
   command rm -f "$1"
   mkfifo "$1"
-  cat <&0 > "$1" &
+  cat <&0 > "$1" &|
-)
+}
 
 _fzf_complete() {
   setopt localoptions ksh_arrays
@@ -183,7 +211,7 @@ _fzf_complete() {
   args=("$@")
   sep=
   for i in {0..${#args[@]}}; do
-    if [[ "${args[$i]}" = -- ]]; then
+    if [[ "${args[$i]-}" = -- ]]; then
       sep=$i
       break
     fi
@@ -207,28 +235,48 @@ _fzf_complete() {
   type $post > /dev/null 2>&1 || post=cat
 
   _fzf_feed_fifo "$fifo"
-  matches=$(FZF_DEFAULT_OPTS="--height ${FZF_TMUX_HEIGHT:-40%} --reverse --bind=ctrl-z:ignore $FZF_DEFAULT_OPTS $FZF_COMPLETION_OPTS $str_arg" __fzf_comprun "$cmd" "${args[@]}" -q "${(Q)prefix}" < "$fifo" | $post | tr '\n' ' ')
+  matches=$(
+    FZF_DEFAULT_OPTS=$(__fzf_defaults "--reverse" "${FZF_COMPLETION_OPTS-} $str_arg") \
+    FZF_DEFAULT_OPTS_FILE='' \
+      __fzf_comprun "$cmd" "${args[@]}" -q "${(Q)prefix}" < "$fifo" | $post | tr '\n' ' ')
   if [ -n "$matches" ]; then
     LBUFFER="$lbuf$matches"
   fi
   command rm -f "$fifo"
 }
 
+# To use custom hostname lists, override __fzf_list_hosts.
+# The function is expected to print hostnames, one per line as well as in the
+# desired sorting and with any duplicates removed, to standard output.
+if ! declare -f __fzf_list_hosts > /dev/null; then
+  __fzf_list_hosts() {
+    setopt localoptions nonomatch
+    command cat <(command tail -n +1 ~/.ssh/config ~/.ssh/config.d/* /etc/ssh/ssh_config 2> /dev/null | command grep -i '^\s*host\(name\)\? ' | awk '{for (i = 2; i <= NF; i++) print $1 " " $i}' | command grep -v '[*?%]') \
+      <(command grep -oE '^[[a-z0-9.,:-]+' ~/.ssh/known_hosts 2> /dev/null | tr ',' '\n' | tr -d '[' | awk '{ print $1 " " $1 }') \
+      <(command grep -v '^\s*\(#\|$\)' /etc/hosts 2> /dev/null | command grep -Fv '0.0.0.0' | command sed 's/#.*//') |
+      awk '{for (i = 2; i <= NF; i++) print $i}' | sort -u
+  }
+fi
+
 _fzf_complete_telnet() {
-  _fzf_complete +m -- "$@" < <(
+  _fzf_complete +m -- "$@" < <(__fzf_list_hosts)
-    command grep -v '^\s*\(#\|$\)' /etc/hosts | command grep -Fv '0.0.0.0' |
-        awk '{if (length($2) > 0) {print $2}}' | sort -u
-  )
 }
 
+# The first and the only argument is the LBUFFER without the current word that contains the trigger.
+# The current word without the trigger is in the $prefix variable passed from the caller.
 _fzf_complete_ssh() {
-  _fzf_complete +m -- "$@" < <(
+  local -a tokens
-    setopt localoptions nonomatch
+  tokens=(${(z)1})
-    command cat <(command tail -n +1 ~/.ssh/config ~/.ssh/config.d/* /etc/ssh/ssh_config 2> /dev/null | command grep -i '^\s*host\(name\)\? ' | awk '{for (i = 2; i <= NF; i++) print $1 " " $i}' | command grep -v '[*?]') \
+  case ${tokens[-1]} in
-        <(command grep -oE '^[[a-z0-9.,:-]+' ~/.ssh/known_hosts | tr ',' '\n' | tr -d '[' | awk '{ print $1 " " $1 }') \
+    -i|-F|-E)
-        <(command grep -v '^\s*\(#\|$\)' /etc/hosts | command grep -Fv '0.0.0.0') |
+      _fzf_path_completion "$prefix" "$1"
-        awk '{if (length($2) > 0) {print $2}}' | sort -u
+      ;;
-  )
+    *)
+      local user
+      [[ $prefix =~ @ ]] && user="${prefix%%@*}@"
+      _fzf_complete +m -- "$@" < <(__fzf_list_hosts | awk -v user="$user" '{print user $0}')
+      ;;
+  esac
 }
 
 _fzf_complete_export() {
@@ -250,8 +298,10 @@ _fzf_complete_unalias() {
 }
 
 _fzf_complete_kill() {
-  _fzf_complete -m --preview 'echo {}' --preview-window down:3:wrap --min-height 15 -- "$@" < <(
+  _fzf_complete -m --header-lines=1 --no-preview --wrap -- "$@" < <(
-    command ps -ef | sed 1d
+    command ps -eo user,pid,ppid,start,time,command 2> /dev/null ||
+      command ps -eo user,pid,ppid,time,args 2> /dev/null || # For BusyBox
+      command ps --everyone --full --windows # For cygwin
   )
 }
 
@@ -278,8 +328,8 @@ fzf-completion() {
   [ -z "$trigger" -a ${LBUFFER[-1]} = ' ' ] && tokens+=("")
 
   # When the trigger starts with ';', it becomes a separate token
-  if [[ ${LBUFFER} = *"${tokens[-2]}${tokens[-1]}" ]]; then
+  if [[ ${LBUFFER} = *"${tokens[-2]-}${tokens[-1]}" ]]; then
-    tokens[-2]="${tokens[-2]}${tokens[-1]}"
+    tokens[-2]="${tokens[-2]-}${tokens[-1]}"
     tokens=(${tokens[0,-2]})
   fi
 
@@ -288,9 +338,12 @@ fzf-completion() {
 
   # Trigger sequence given
   if [ ${#tokens} -gt 1 -a "$tail" = "$trigger" ]; then
-    d_cmds=(${=FZF_COMPLETION_DIR_COMMANDS:-cd pushd rmdir})
+    d_cmds=(${=FZF_COMPLETION_DIR_COMMANDS-cd pushd rmdir})
 
     [ -z "$trigger"      ] && prefix=${tokens[-1]} || prefix=${tokens[-1]:0:-${#trigger}}
+    if [[ $prefix = *'$('* ]] || [[ $prefix = *'<('* ]] || [[ $prefix = *'>('* ]] || [[ $prefix = *':='* ]] || [[ $prefix = *'`'* ]]; then
+      return
+    fi
     [ -n "${tokens[-1]}" ] && lbuf=${lbuf:0:-${#tokens[-1]}}
 
     if eval "type _fzf_complete_${cmd} > /dev/null"; then
@@ -315,6 +368,7 @@ fzf-completion() {
 
 zle     -N   fzf-completion
 bindkey '^I' fzf-completion
+fi
 
 } always {
   # Restore the original options.

shell/key-bindings.bash

@@ -11,26 +11,31 @@
 # - $FZF_ALT_C_COMMAND
 # - $FZF_ALT_C_OPTS
 
+if [[ $- =~ i ]]; then
+
+
 # Key bindings
 # ------------
+
+__fzf_defaults() {
+  # $1: Prepend to FZF_DEFAULT_OPTS_FILE and FZF_DEFAULT_OPTS
+  # $2: Append to FZF_DEFAULT_OPTS_FILE and FZF_DEFAULT_OPTS
+  echo "--height ${FZF_TMUX_HEIGHT:-40%} --bind=ctrl-z:ignore $1"
+  command cat "${FZF_DEFAULT_OPTS_FILE-}" 2> /dev/null
+  echo "${FZF_DEFAULT_OPTS-} $2"
+}
+
 __fzf_select__() {
-  local cmd opts
+  FZF_DEFAULT_COMMAND=${FZF_CTRL_T_COMMAND:-} \
-  cmd="${FZF_CTRL_T_COMMAND:-"command find -L . -mindepth 1 \\( -path '*/\\.*' -o -fstype 'sysfs' -o -fstype 'devfs' -o -fstype 'devtmpfs' -o -fstype 'proc' \\) -prune \
+  FZF_DEFAULT_OPTS=$(__fzf_defaults "--reverse --walker=file,dir,follow,hidden --scheme=path" "${FZF_CTRL_T_OPTS-} -m") \
-    -o -type f -print \
+  FZF_DEFAULT_OPTS_FILE='' $(__fzfcmd) "$@" |
-    -o -type d -print \
-    -o -type l -print 2> /dev/null | cut -b3-"}"
-  opts="--height ${FZF_TMUX_HEIGHT:-40%} --bind=ctrl-z:ignore --reverse $FZF_DEFAULT_OPTS $FZF_CTRL_T_OPTS -m"
-  eval "$cmd" |
-    FZF_DEFAULT_OPTS="$opts" $(__fzfcmd) "$@" |
     while read -r item; do
       printf '%q ' "$item"  # escape special chars
     done
 }
 
-if [[ $- =~ i ]]; then
-
 __fzfcmd() {
-  [[ -n "$TMUX_PANE" ]] && { [[ "${FZF_TMUX:-0}" != 0 ]] || [[ -n "$FZF_TMUX_OPTS" ]]; } &&
+  [[ -n "${TMUX_PANE-}" ]] && { [[ "${FZF_TMUX:-0}" != 0 ]] || [[ -n "${FZF_TMUX_OPTS-}" ]]; } &&
     echo "fzf-tmux ${FZF_TMUX_OPTS:--d${FZF_TMUX_HEIGHT:-40%}} -- " || echo "fzf"
 }
 
@@ -41,29 +46,62 @@ fzf-file-widget() {
 }
 
 __fzf_cd__() {
-  local cmd opts dir
+  local dir
-  cmd="${FZF_ALT_C_COMMAND:-"command find -L . -mindepth 1 \\( -path '*/\\.*' -o -fstype 'sysfs' -o -fstype 'devfs' -o -fstype 'devtmpfs' -o -fstype 'proc' \\) -prune \
+  dir=$(
-    -o -type d -print 2> /dev/null | cut -b3-"}"
+    FZF_DEFAULT_COMMAND=${FZF_ALT_C_COMMAND:-} \
-  opts="--height ${FZF_TMUX_HEIGHT:-40%} --bind=ctrl-z:ignore --reverse $FZF_DEFAULT_OPTS $FZF_ALT_C_OPTS +m"
+    FZF_DEFAULT_OPTS=$(__fzf_defaults "--reverse --walker=dir,follow,hidden --scheme=path" "${FZF_ALT_C_OPTS-} +m") \
-  dir=$(eval "$cmd" | FZF_DEFAULT_OPTS="$opts" $(__fzfcmd)) && printf 'builtin cd -- %q' "$dir"
+    FZF_DEFAULT_OPTS_FILE='' $(__fzfcmd)
+  ) && printf 'builtin cd -- %q' "$(builtin unset CDPATH && builtin cd -- "$dir" && builtin pwd)"
 }
 
-__fzf_history__() {
+if command -v perl > /dev/null; then
-  local output opts script
+  __fzf_history__() {
-  opts="--height ${FZF_TMUX_HEIGHT:-40%} --bind=ctrl-z:ignore $FZF_DEFAULT_OPTS -n2..,.. --tiebreak=index --bind=ctrl-r:toggle-sort $FZF_CTRL_R_OPTS +m --read0"
+    local output script
-  script='BEGIN { getc; $/ = "\n\t"; $HISTCOUNT = $ENV{last_hist} + 1 } s/^[ *]//; print $HISTCOUNT - $. . "\t$_" if !$seen{$_}++'
+    script='BEGIN { getc; $/ = "\n\t"; $HISTCOUNT = $ENV{last_hist} + 1 } s/^[ *]//; s/\n/\n\t/gm; print $HISTCOUNT - $. . "\t$_" if !$seen{$_}++'
-  output=$(
+    output=$(
-    builtin fc -lnr -2147483648 |
+      set +o pipefail
-      last_hist=$(HISTTIMEFORMAT='' builtin history 1) perl -n -l0 -e "$script" |
+      builtin fc -lnr -2147483648 |
-      FZF_DEFAULT_OPTS="$opts" $(__fzfcmd) --query "$READLINE_LINE"
+        last_hist=$(HISTTIMEFORMAT='' builtin history 1) command perl -n -l0 -e "$script" |
-  ) || return
+        FZF_DEFAULT_OPTS=$(__fzf_defaults "" "-n2..,.. --scheme=history --bind=ctrl-r:toggle-sort --wrap-sign '"$'\t'"↳ ' --highlight-line ${FZF_CTRL_R_OPTS-} +m --read0") \
-  READLINE_LINE=${output#*$'\t'}
+        FZF_DEFAULT_OPTS_FILE='' $(__fzfcmd) --query "$READLINE_LINE"
-  if [[ -z "$READLINE_POINT" ]]; then
+    ) || return
-    echo "$READLINE_LINE"
+    READLINE_LINE=$(command perl -pe 's/^\d*\t//' <<< "$output")
-  else
+    if [[ -z "$READLINE_POINT" ]]; then
-    READLINE_POINT=0x7fffffff
+      echo "$READLINE_LINE"
-  fi
+    else
-}
+      READLINE_POINT=0x7fffffff
+    fi
+  }
+else # awk - fallback for POSIX systems
+  __fzf_history__() {
+    local output script n x y z d
+    if [[ -z $__fzf_awk ]]; then
+      __fzf_awk=awk
+      # choose the faster mawk if: it's installed && build date >= 20230322 && version >= 1.3.4
+      IFS=' .' read n x y z d <<< $(command mawk -W version 2> /dev/null)
+      [[ $n == mawk ]] && (( d >= 20230302 && (x *1000 +y) *1000 +z >= 1003004 )) && __fzf_awk=mawk
+    fi
+    [[ $(HISTTIMEFORMAT='' builtin history 1) =~ [[:digit:]]+ ]]    # how many history entries
+    script='function P(b) { ++n; sub(/^[ *]/, "", b); if (!seen[b]++) { printf "%d\t%s%c", '$((BASH_REMATCH + 1))' - n, b, 0 } }
+    NR==1 { b = substr($0, 2); next }
+    /^\t/ { P(b); b = substr($0, 2); next }
+    { b = b RS $0 }
+    END { if (NR) P(b) }'
+    output=$(
+      set +o pipefail
+      builtin fc -lnr -2147483648 2> /dev/null |   # ( $'\t '<lines>$'\n' )* ; <lines> ::= [^\n]* ( $'\n'<lines> )*
+        command $__fzf_awk "$script"           |   # ( <counter>$'\t'<lines>$'\000' )*
+        FZF_DEFAULT_OPTS=$(__fzf_defaults "" "-n2..,.. --scheme=history --bind=ctrl-r:toggle-sort --wrap-sign '"$'\t'"↳ ' --highlight-line ${FZF_CTRL_R_OPTS-} +m --read0") \
+        FZF_DEFAULT_OPTS_FILE='' $(__fzfcmd) --query "$READLINE_LINE"
+    ) || return
+    READLINE_LINE=${output#*$'\t'}
+    if [[ -z "$READLINE_POINT" ]]; then
+      echo "$READLINE_LINE"
+    else
+      READLINE_POINT=0x7fffffff
+    fi
+  }
+fi
 
 # Required to refresh the prompt after fzf
 bind -m emacs-standard '"\er": redraw-current-line'
@@ -74,19 +112,23 @@ bind -m emacs-standard '"\C-z": vi-editing-mode'
 
 if (( BASH_VERSINFO[0] < 4 )); then
   # CTRL-T - Paste the selected file path into the command line
-  bind -m emacs-standard '"\C-t": " \C-b\C-k \C-u`__fzf_select__`\e\C-e\er\C-a\C-y\C-h\C-e\e \C-y\ey\C-x\C-x\C-f"'
+  if [[ "${FZF_CTRL_T_COMMAND-x}" != "" ]]; then
-  bind -m vi-command '"\C-t": "\C-z\C-t\C-z"'
+    bind -m emacs-standard '"\C-t": " \C-b\C-k \C-u`__fzf_select__`\e\C-e\er\C-a\C-y\C-h\C-e\e \C-y\ey\C-x\C-x\C-f"'
-  bind -m vi-insert '"\C-t": "\C-z\C-t\C-z"'
+    bind -m vi-command '"\C-t": "\C-z\C-t\C-z"'
+    bind -m vi-insert '"\C-t": "\C-z\C-t\C-z"'
+  fi
 
   # CTRL-R - Paste the selected command from history into the command line
-  bind -m emacs-standard '"\C-r": "\C-e \C-u\C-y\ey\C-u"$(__fzf_history__)"\e\C-e\er"'
+  bind -m emacs-standard '"\C-r": "\C-e \C-u\C-y\ey\C-u`__fzf_history__`\e\C-e\er"'
   bind -m vi-command '"\C-r": "\C-z\C-r\C-z"'
   bind -m vi-insert '"\C-r": "\C-z\C-r\C-z"'
 else
   # CTRL-T - Paste the selected file path into the command line
-  bind -m emacs-standard -x '"\C-t": fzf-file-widget'
+  if [[ "${FZF_CTRL_T_COMMAND-x}" != "" ]]; then
-  bind -m vi-command -x '"\C-t": fzf-file-widget'
+    bind -m emacs-standard -x '"\C-t": fzf-file-widget'
-  bind -m vi-insert -x '"\C-t": fzf-file-widget'
+    bind -m vi-command -x '"\C-t": fzf-file-widget'
+    bind -m vi-insert -x '"\C-t": fzf-file-widget'
+  fi
 
   # CTRL-R - Paste the selected command from history into the command line
   bind -m emacs-standard -x '"\C-r": __fzf_history__'
@@ -95,8 +137,10 @@ else
 fi
 
 # ALT-C - cd into the selected directory
-bind -m emacs-standard '"\ec": " \C-b\C-k \C-u`__fzf_cd__`\e\C-e\er\C-m\C-y\C-h\e \C-y\ey\C-x\C-x\C-d"'
+if [[ "${FZF_ALT_C_COMMAND-x}" != "" ]]; then
-bind -m vi-command '"\ec": "\C-z\ec\C-z"'
+  bind -m emacs-standard '"\ec": " \C-b\C-k \C-u`__fzf_cd__`\e\C-e\er\C-m\C-y\C-h\e \C-y\ey\C-x\C-x\C-d"'
-bind -m vi-insert '"\ec": "\C-z\ec\C-z"'
+  bind -m vi-command '"\ec": "\C-z\ec\C-z"'
+  bind -m vi-insert '"\ec": "\C-z\ec\C-z"'
+fi
 
 fi

shell/key-bindings.fish

@@ -11,29 +11,35 @@
 # - $FZF_ALT_C_COMMAND
 # - $FZF_ALT_C_OPTS
 
+status is-interactive; or exit 0
+
+
 # Key bindings
 # ------------
 function fzf_key_bindings
 
+  function __fzf_defaults
+    # $1: Prepend to FZF_DEFAULT_OPTS_FILE and FZF_DEFAULT_OPTS
+    # $2: Append to FZF_DEFAULT_OPTS_FILE and FZF_DEFAULT_OPTS
+    test -n "$FZF_TMUX_HEIGHT"; or set FZF_TMUX_HEIGHT 40%
+    echo "--height $FZF_TMUX_HEIGHT --bind=ctrl-z:ignore" $argv[1]
+    command cat "$FZF_DEFAULT_OPTS_FILE" 2> /dev/null
+    echo $FZF_DEFAULT_OPTS $argv[2]
+  end
+
   # Store current token in $dir as root for the 'find' command
   function fzf-file-widget -d "List files and folders"
     set -l commandline (__fzf_parse_commandline)
-    set -l dir $commandline[1]
+    set -lx dir $commandline[1]
     set -l fzf_query $commandline[2]
     set -l prefix $commandline[3]
 
-    # "-path \$dir'*/\\.*'" matches hidden files/folders inside $dir but not
-    # $dir itself, even if hidden.
-    test -n "$FZF_CTRL_T_COMMAND"; or set -l FZF_CTRL_T_COMMAND "
-    command find -L \$dir -mindepth 1 \\( -path \$dir'*/\\.*' -o -fstype 'sysfs' -o -fstype 'devfs' -o -fstype 'devtmpfs' \\) -prune \
-    -o -type f -print \
-    -o -type d -print \
-    -o -type l -print 2> /dev/null | sed 's@^\./@@'"
-
     test -n "$FZF_TMUX_HEIGHT"; or set FZF_TMUX_HEIGHT 40%
     begin
-      set -lx FZF_DEFAULT_OPTS "--height $FZF_TMUX_HEIGHT --reverse --bind=ctrl-z:ignore $FZF_DEFAULT_OPTS $FZF_CTRL_T_OPTS"
+      set -lx FZF_DEFAULT_OPTS (__fzf_defaults "--reverse --walker=file,dir,follow,hidden --scheme=path --walker-root='$dir'" "$FZF_CTRL_T_OPTS")
-      eval "$FZF_CTRL_T_COMMAND | "(__fzfcmd)' -m --query "'$fzf_query'"' | while read -l r; set result $result $r; end
+      set -lx FZF_DEFAULT_COMMAND "$FZF_CTRL_T_COMMAND"
+      set -lx FZF_DEFAULT_OPTS_FILE ''
+      eval (__fzfcmd)' -m --query "'$fzf_query'"' | while read -l r; set result $result $r; end
     end
     if [ -z "$result" ]
       commandline -f repaint
@@ -53,19 +59,31 @@ function fzf_key_bindings
   function fzf-history-widget -d "Show command history"
     test -n "$FZF_TMUX_HEIGHT"; or set FZF_TMUX_HEIGHT 40%
     begin
-      set -lx FZF_DEFAULT_OPTS "--height $FZF_TMUX_HEIGHT $FZF_DEFAULT_OPTS --tiebreak=index --bind=ctrl-r:toggle-sort,ctrl-z:ignore $FZF_CTRL_R_OPTS +m"
-
       set -l FISH_MAJOR (echo $version | cut -f1 -d.)
       set -l FISH_MINOR (echo $version | cut -f2 -d.)
 
+      # merge history from other sessions before searching
+      if test -z "$fish_private_mode"
+        builtin history merge
+      end
+
       # history's -z flag is needed for multi-line support.
       # history's -z flag was added in fish 2.4.0, so don't use it for versions
       # before 2.4.0.
       if [ "$FISH_MAJOR" -gt 2 -o \( "$FISH_MAJOR" -eq 2 -a "$FISH_MINOR" -ge 4 \) ];
-        history -z | eval (__fzfcmd) --read0 --print0 -q '(commandline)' | read -lz result
+        if type -P perl > /dev/null 2>&1
-        and commandline -- $result
+          set -lx FZF_DEFAULT_OPTS (__fzf_defaults "" "-n2..,.. --scheme=history --bind=ctrl-r:toggle-sort --wrap-sign '"\t"↳ ' --highlight-line $FZF_CTRL_R_OPTS +m")
+          set -lx FZF_DEFAULT_OPTS_FILE ''
+          builtin history -z --reverse | command perl -0 -pe 's/^/$.\t/g; s/\n/\n\t/gm' | eval (__fzfcmd) --tac --read0 --print0 -q '(commandline)' | command perl -pe 's/^\d*\t//' | read -lz result
+          and commandline -- $result
+        else
+          set -lx FZF_DEFAULT_OPTS (__fzf_defaults "" "--scheme=history --bind=ctrl-r:toggle-sort --wrap-sign '"\t"↳ ' --highlight-line $FZF_CTRL_R_OPTS +m")
+          set -lx FZF_DEFAULT_OPTS_FILE ''
+          builtin history -z | eval (__fzfcmd) --read0 --print0 -q '(commandline)' | read -lz result
+          and commandline -- $result
+        end
       else
-        history | eval (__fzfcmd) -q '(commandline)' | read -l result
+        builtin history | eval (__fzfcmd) -q '(commandline)' | read -l result
         and commandline -- $result
       end
     end
@@ -74,20 +92,19 @@ function fzf_key_bindings
 
   function fzf-cd-widget -d "Change directory"
     set -l commandline (__fzf_parse_commandline)
-    set -l dir $commandline[1]
+    set -lx dir $commandline[1]
     set -l fzf_query $commandline[2]
     set -l prefix $commandline[3]
 
-    test -n "$FZF_ALT_C_COMMAND"; or set -l FZF_ALT_C_COMMAND "
-    command find -L \$dir -mindepth 1 \\( -path \$dir'*/\\.*' -o -fstype 'sysfs' -o -fstype 'devfs' -o -fstype 'devtmpfs' \\) -prune \
-    -o -type d -print 2> /dev/null | sed 's@^\./@@'"
     test -n "$FZF_TMUX_HEIGHT"; or set FZF_TMUX_HEIGHT 40%
     begin
-      set -lx FZF_DEFAULT_OPTS "--height $FZF_TMUX_HEIGHT --reverse --bind=ctrl-z:ignore $FZF_DEFAULT_OPTS $FZF_ALT_C_OPTS"
+      set -lx FZF_DEFAULT_OPTS (__fzf_defaults "--reverse --walker=dir,follow,hidden --scheme=path --walker-root='$dir'" "$FZF_ALT_C_OPTS")
-      eval "$FZF_ALT_C_COMMAND | "(__fzfcmd)' +m --query "'$fzf_query'"' | read -l result
+      set -lx FZF_DEFAULT_OPTS_FILE ''
+      set -lx FZF_DEFAULT_COMMAND "$FZF_ALT_C_COMMAND"
+      eval (__fzfcmd)' +m --query "'$fzf_query'"' | read -l result
 
       if [ -n "$result" ]
-        builtin cd -- $result
+        cd -- $result
 
         # Remove last token from commandline.
         commandline -t ""
@@ -110,14 +127,22 @@ function fzf_key_bindings
     end
   end
 
-  bind \ct fzf-file-widget
   bind \cr fzf-history-widget
-  bind \ec fzf-cd-widget
+  if not set -q FZF_CTRL_T_COMMAND; or test -n "$FZF_CTRL_T_COMMAND"
+    bind \ct fzf-file-widget
+  end
+  if not set -q FZF_ALT_C_COMMAND; or test -n "$FZF_ALT_C_COMMAND"
+    bind \ec fzf-cd-widget
+  end
 
   if bind -M insert > /dev/null 2>&1
-    bind -M insert \ct fzf-file-widget
     bind -M insert \cr fzf-history-widget
-    bind -M insert \ec fzf-cd-widget
+    if not set -q FZF_CTRL_T_COMMAND; or test -n "$FZF_CTRL_T_COMMAND"
+      bind -M insert \ct fzf-file-widget
+    end
+    if not set -q FZF_ALT_C_COMMAND; or test -n "$FZF_ALT_C_COMMAND"
+      bind -M insert \ec fzf-cd-widget
+    end
   end
 
   function __fzf_parse_commandline -d 'Parse the current command line token and return split of existing filepath, fzf query, and optional -option= prefix'

shell/key-bindings.zsh

@@ -11,6 +11,7 @@
 # - $FZF_ALT_C_COMMAND
 # - $FZF_ALT_C_OPTS
 
+
 # Key bindings
 # ------------
 
@@ -32,22 +33,27 @@ else
   }
 fi
 
-'emulate' 'zsh' '-o' 'no_aliases'
+'builtin' 'emulate' 'zsh' && 'builtin' 'setopt' 'no_aliases'
 
 {
+if [[ -o interactive ]]; then
 
-[[ -o interactive ]] || return 0
+__fzf_defaults() {
+  # $1: Prepend to FZF_DEFAULT_OPTS_FILE and FZF_DEFAULT_OPTS
+  # $2: Append to FZF_DEFAULT_OPTS_FILE and FZF_DEFAULT_OPTS
+  echo "--height ${FZF_TMUX_HEIGHT:-40%} --bind=ctrl-z:ignore $1"
+  command cat "${FZF_DEFAULT_OPTS_FILE-}" 2> /dev/null
+  echo "${FZF_DEFAULT_OPTS-} $2"
+}
 
 # CTRL-T - Paste the selected file path(s) into the command line
-__fsel() {
+__fzf_select() {
-  local cmd="${FZF_CTRL_T_COMMAND:-"command find -L . -mindepth 1 \\( -path '*/\\.*' -o -fstype 'sysfs' -o -fstype 'devfs' -o -fstype 'devtmpfs' -o -fstype 'proc' \\) -prune \
-    -o -type f -print \
-    -o -type d -print \
-    -o -type l -print 2> /dev/null | cut -b3-"}"
   setopt localoptions pipefail no_aliases 2> /dev/null
   local item
-  eval "$cmd" | FZF_DEFAULT_OPTS="--height ${FZF_TMUX_HEIGHT:-40%} --reverse --bind=ctrl-z:ignore $FZF_DEFAULT_OPTS $FZF_CTRL_T_OPTS" $(__fzfcmd) -m "$@" | while read item; do
+  FZF_DEFAULT_COMMAND=${FZF_CTRL_T_COMMAND:-} \
-    echo -n "${(q)item} "
+  FZF_DEFAULT_OPTS=$(__fzf_defaults "--reverse --walker=file,dir,follow,hidden --scheme=path" "${FZF_CTRL_T_OPTS-} -m") \
+  FZF_DEFAULT_OPTS_FILE='' $(__fzfcmd) "$@" < /dev/tty | while read -r item; do
+    echo -n -E "${(q)item} "
   done
   local ret=$?
   echo
@@ -55,55 +61,71 @@ __fsel() {
 }
 
 __fzfcmd() {
-  [ -n "$TMUX_PANE" ] && { [ "${FZF_TMUX:-0}" != 0 ] || [ -n "$FZF_TMUX_OPTS" ]; } &&
+  [ -n "${TMUX_PANE-}" ] && { [ "${FZF_TMUX:-0}" != 0 ] || [ -n "${FZF_TMUX_OPTS-}" ]; } &&
     echo "fzf-tmux ${FZF_TMUX_OPTS:--d${FZF_TMUX_HEIGHT:-40%}} -- " || echo "fzf"
 }
 
 fzf-file-widget() {
-  LBUFFER="${LBUFFER}$(__fsel)"
+  LBUFFER="${LBUFFER}$(__fzf_select)"
   local ret=$?
   zle reset-prompt
   return $ret
 }
-zle     -N            fzf-file-widget
+if [[ "${FZF_CTRL_T_COMMAND-x}" != "" ]]; then
-bindkey -M emacs '^T' fzf-file-widget
+  zle     -N            fzf-file-widget
-bindkey -M vicmd '^T' fzf-file-widget
+  bindkey -M emacs '^T' fzf-file-widget
-bindkey -M viins '^T' fzf-file-widget
+  bindkey -M vicmd '^T' fzf-file-widget
+  bindkey -M viins '^T' fzf-file-widget
+fi
 
 # ALT-C - cd into the selected directory
 fzf-cd-widget() {
-  local cmd="${FZF_ALT_C_COMMAND:-"command find -L . -mindepth 1 \\( -path '*/\\.*' -o -fstype 'sysfs' -o -fstype 'devfs' -o -fstype 'devtmpfs' -o -fstype 'proc' \\) -prune \
-    -o -type d -print 2> /dev/null | cut -b3-"}"
   setopt localoptions pipefail no_aliases 2> /dev/null
-  local dir="$(eval "$cmd" | FZF_DEFAULT_OPTS="--height ${FZF_TMUX_HEIGHT:-40%} --reverse --bind=ctrl-z:ignore $FZF_DEFAULT_OPTS $FZF_ALT_C_OPTS" $(__fzfcmd) +m)"
+  local dir="$(
+    FZF_DEFAULT_COMMAND=${FZF_ALT_C_COMMAND:-} \
+    FZF_DEFAULT_OPTS=$(__fzf_defaults "--reverse --walker=dir,follow,hidden --scheme=path" "${FZF_ALT_C_OPTS-} +m") \
+    FZF_DEFAULT_OPTS_FILE='' $(__fzfcmd) < /dev/tty)"
   if [[ -z "$dir" ]]; then
     zle redisplay
     return 0
   fi
   zle push-line # Clear buffer. Auto-restored on next prompt.
-  BUFFER="builtin cd -- ${(q)dir}"
+  BUFFER="builtin cd -- ${(q)dir:a}"
   zle accept-line
   local ret=$?
   unset dir # ensure this doesn't end up appearing in prompt expansion
   zle reset-prompt
   return $ret
 }
-zle     -N             fzf-cd-widget
+if [[ "${FZF_ALT_C_COMMAND-x}" != "" ]]; then
-bindkey -M emacs '\ec' fzf-cd-widget
+  zle     -N             fzf-cd-widget
-bindkey -M vicmd '\ec' fzf-cd-widget
+  bindkey -M emacs '\ec' fzf-cd-widget
-bindkey -M viins '\ec' fzf-cd-widget
+  bindkey -M vicmd '\ec' fzf-cd-widget
+  bindkey -M viins '\ec' fzf-cd-widget
+fi
 
 # CTRL-R - Paste the selected command from history into the command line
 fzf-history-widget() {
-  local selected num
+  local selected
-  setopt localoptions noglobsubst noposixbuiltins pipefail no_aliases 2> /dev/null
+  setopt localoptions noglobsubst noposixbuiltins pipefail no_aliases noglob nobash_rematch 2> /dev/null
-  selected=( $(fc -rl 1 | awk '{ cmd=$0; sub(/^\s*[0-9]+\**\s+/, "", cmd); if (!seen[cmd]++) print $0 }' |
+  # Ensure the associative history array, which maps event numbers to the full
-    FZF_DEFAULT_OPTS="--height ${FZF_TMUX_HEIGHT:-40%} $FZF_DEFAULT_OPTS -n2..,.. --tiebreak=index --bind=ctrl-r:toggle-sort,ctrl-z:ignore $FZF_CTRL_R_OPTS --query=${(qqq)LBUFFER} +m" $(__fzfcmd)) )
+  # history lines, is loaded, and that Perl is installed for multi-line output.
+  if zmodload -F zsh/parameter p:history 2>/dev/null && (( ${#commands[perl]} )); then
+    selected="$(printf '%s\t%s\000' "${(kv)history[@]}" |
+      perl -0 -ne 'if (!$seen{(/^\s*[0-9]+\**\t(.*)/s, $1)}++) { s/\n/\n\t/g; print; }' |
+      FZF_DEFAULT_OPTS=$(__fzf_defaults "" "-n2..,.. --scheme=history --bind=ctrl-r:toggle-sort --wrap-sign '\t↳ ' --highlight-line ${FZF_CTRL_R_OPTS-} --query=${(qqq)LBUFFER} +m --read0") \
+      FZF_DEFAULT_OPTS_FILE='' $(__fzfcmd))"
+  else
+    selected="$(fc -rl 1 | awk '{ cmd=$0; sub(/^[ \t]*[0-9]+\**[ \t]+/, "", cmd); if (!seen[cmd]++) print $0 }' |
+      FZF_DEFAULT_OPTS=$(__fzf_defaults "" "-n2..,.. --scheme=history --bind=ctrl-r:toggle-sort --wrap-sign '\t↳ ' --highlight-line ${FZF_CTRL_R_OPTS-} --query=${(qqq)LBUFFER} +m") \
+      FZF_DEFAULT_OPTS_FILE='' $(__fzfcmd))"
+  fi
   local ret=$?
   if [ -n "$selected" ]; then
-    num=$selected[1]
+    if [[ $(awk '{print $1; exit}' <<< "$selected") =~ ^[1-9][0-9]* ]]; then
-    if [ -n "$num" ]; then
+      zle vi-fetch-history -n $MATCH
-      zle vi-fetch-history -n $num
+    else # selected is a custom query, not from history
+      LBUFFER="$selected"
     fi
   fi
   zle reset-prompt
@@ -113,6 +135,7 @@ zle     -N            fzf-history-widget
 bindkey -M emacs '^R' fzf-history-widget
 bindkey -M vicmd '^R' fzf-history-widget
 bindkey -M viins '^R' fzf-history-widget
+fi
 
 } always {
   eval $__fzf_key_bindings_options

src/LICENSE

@@ -1,6 +1,6 @@
 The MIT License (MIT)
 
-Copyright (c) 2013-2021 Junegunn Choi
+Copyright (c) 2013-2024 Junegunn Choi
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal

src/actiontype_string.go

@@ -0,0 +1,135 @@
+// Code generated by "stringer -type=actionType"; DO NOT EDIT.
+
+package fzf
+
+import "strconv"
+
+func _() {
+	// An "invalid array index" compiler error signifies that the constant values have changed.
+	// Re-run the stringer command to generate them again.
+	var x [1]struct{}
+	_ = x[actIgnore-0]
+	_ = x[actStart-1]
+	_ = x[actClick-2]
+	_ = x[actInvalid-3]
+	_ = x[actChar-4]
+	_ = x[actMouse-5]
+	_ = x[actBeginningOfLine-6]
+	_ = x[actAbort-7]
+	_ = x[actAccept-8]
+	_ = x[actAcceptNonEmpty-9]
+	_ = x[actAcceptOrPrintQuery-10]
+	_ = x[actBackwardChar-11]
+	_ = x[actBackwardDeleteChar-12]
+	_ = x[actBackwardDeleteCharEof-13]
+	_ = x[actBackwardWord-14]
+	_ = x[actCancel-15]
+	_ = x[actChangeBorderLabel-16]
+	_ = x[actChangeHeader-17]
+	_ = x[actChangeMulti-18]
+	_ = x[actChangePreviewLabel-19]
+	_ = x[actChangePrompt-20]
+	_ = x[actChangeQuery-21]
+	_ = x[actClearScreen-22]
+	_ = x[actClearQuery-23]
+	_ = x[actClearSelection-24]
+	_ = x[actClose-25]
+	_ = x[actDeleteChar-26]
+	_ = x[actDeleteCharEof-27]
+	_ = x[actEndOfLine-28]
+	_ = x[actFatal-29]
+	_ = x[actForwardChar-30]
+	_ = x[actForwardWord-31]
+	_ = x[actKillLine-32]
+	_ = x[actKillWord-33]
+	_ = x[actUnixLineDiscard-34]
+	_ = x[actUnixWordRubout-35]
+	_ = x[actYank-36]
+	_ = x[actBackwardKillWord-37]
+	_ = x[actSelectAll-38]
+	_ = x[actDeselectAll-39]
+	_ = x[actToggle-40]
+	_ = x[actToggleSearch-41]
+	_ = x[actToggleAll-42]
+	_ = x[actToggleDown-43]
+	_ = x[actToggleUp-44]
+	_ = x[actToggleIn-45]
+	_ = x[actToggleOut-46]
+	_ = x[actToggleTrack-47]
+	_ = x[actToggleTrackCurrent-48]
+	_ = x[actToggleHeader-49]
+	_ = x[actToggleWrap-50]
+	_ = x[actTrackCurrent-51]
+	_ = x[actUntrackCurrent-52]
+	_ = x[actDown-53]
+	_ = x[actUp-54]
+	_ = x[actPageUp-55]
+	_ = x[actPageDown-56]
+	_ = x[actPosition-57]
+	_ = x[actHalfPageUp-58]
+	_ = x[actHalfPageDown-59]
+	_ = x[actOffsetUp-60]
+	_ = x[actOffsetDown-61]
+	_ = x[actOffsetMiddle-62]
+	_ = x[actJump-63]
+	_ = x[actJumpAccept-64]
+	_ = x[actPrintQuery-65]
+	_ = x[actRefreshPreview-66]
+	_ = x[actReplaceQuery-67]
+	_ = x[actToggleSort-68]
+	_ = x[actShowPreview-69]
+	_ = x[actHidePreview-70]
+	_ = x[actTogglePreview-71]
+	_ = x[actTogglePreviewWrap-72]
+	_ = x[actTransform-73]
+	_ = x[actTransformBorderLabel-74]
+	_ = x[actTransformHeader-75]
+	_ = x[actTransformPreviewLabel-76]
+	_ = x[actTransformPrompt-77]
+	_ = x[actTransformQuery-78]
+	_ = x[actPreview-79]
+	_ = x[actChangePreview-80]
+	_ = x[actChangePreviewWindow-81]
+	_ = x[actPreviewTop-82]
+	_ = x[actPreviewBottom-83]
+	_ = x[actPreviewUp-84]
+	_ = x[actPreviewDown-85]
+	_ = x[actPreviewPageUp-86]
+	_ = x[actPreviewPageDown-87]
+	_ = x[actPreviewHalfPageUp-88]
+	_ = x[actPreviewHalfPageDown-89]
+	_ = x[actPrevHistory-90]
+	_ = x[actPrevSelected-91]
+	_ = x[actPrint-92]
+	_ = x[actPut-93]
+	_ = x[actNextHistory-94]
+	_ = x[actNextSelected-95]
+	_ = x[actExecute-96]
+	_ = x[actExecuteSilent-97]
+	_ = x[actExecuteMulti-98]
+	_ = x[actSigStop-99]
+	_ = x[actFirst-100]
+	_ = x[actLast-101]
+	_ = x[actReload-102]
+	_ = x[actReloadSync-103]
+	_ = x[actDisableSearch-104]
+	_ = x[actEnableSearch-105]
+	_ = x[actSelect-106]
+	_ = x[actDeselect-107]
+	_ = x[actUnbind-108]
+	_ = x[actRebind-109]
+	_ = x[actBecome-110]
+	_ = x[actShowHeader-111]
+	_ = x[actHideHeader-112]
+}
+
+const _actionType_name = "actIgnoreactStartactClickactInvalidactCharactMouseactBeginningOfLineactAbortactAcceptactAcceptNonEmptyactAcceptOrPrintQueryactBackwardCharactBackwardDeleteCharactBackwardDeleteCharEofactBackwardWordactCancelactChangeBorderLabelactChangeHeaderactChangeMultiactChangePreviewLabelactChangePromptactChangeQueryactClearScreenactClearQueryactClearSelectionactCloseactDeleteCharactDeleteCharEofactEndOfLineactFatalactForwardCharactForwardWordactKillLineactKillWordactUnixLineDiscardactUnixWordRuboutactYankactBackwardKillWordactSelectAllactDeselectAllactToggleactToggleSearchactToggleAllactToggleDownactToggleUpactToggleInactToggleOutactToggleTrackactToggleTrackCurrentactToggleHeaderactToggleWrapactTrackCurrentactUntrackCurrentactDownactUpactPageUpactPageDownactPositionactHalfPageUpactHalfPageDownactOffsetUpactOffsetDownactOffsetMiddleactJumpactJumpAcceptactPrintQueryactRefreshPreviewactReplaceQueryactToggleSortactShowPreviewactHidePreviewactTogglePreviewactTogglePreviewWrapactTransformactTransformBorderLabelactTransformHeaderactTransformPreviewLabelactTransformPromptactTransformQueryactPreviewactChangePreviewactChangePreviewWindowactPreviewTopactPreviewBottomactPreviewUpactPreviewDownactPreviewPageUpactPreviewPageDownactPreviewHalfPageUpactPreviewHalfPageDownactPrevHistoryactPrevSelectedactPrintactPutactNextHistoryactNextSelectedactExecuteactExecuteSilentactExecuteMultiactSigStopactFirstactLastactReloadactReloadSyncactDisableSearchactEnableSearchactSelectactDeselectactUnbindactRebindactBecomeactShowHeaderactHideHeader"
+
+var _actionType_index = [...]uint16{0, 9, 17, 25, 35, 42, 50, 68, 76, 85, 102, 123, 138, 159, 183, 198, 207, 227, 242, 256, 277, 292, 306, 320, 333, 350, 358, 371, 387, 399, 407, 421, 435, 446, 457, 475, 492, 499, 518, 530, 544, 553, 568, 580, 593, 604, 615, 627, 641, 662, 677, 690, 705, 722, 729, 734, 743, 754, 765, 778, 793, 804, 817, 832, 839, 852, 865, 882, 897, 910, 924, 938, 954, 974, 986, 1009, 1027, 1051, 1069, 1086, 1096, 1112, 1134, 1147, 1163, 1175, 1189, 1205, 1223, 1243, 1265, 1279, 1294, 1302, 1308, 1322, 1337, 1347, 1363, 1378, 1388, 1396, 1403, 1412, 1425, 1441, 1456, 1465, 1476, 1485, 1494, 1503, 1516, 1529}
+
+func (i actionType) String() string {
+	if i < 0 || i >= actionType(len(_actionType_index)-1) {
+		return "actionType(" + strconv.FormatInt(int64(i), 10) + ")"
+	}
+	return _actionType_name[_actionType_index[i]:_actionType_index[i+1]]
+}

src/algo/algo.go

@@ -80,6 +80,7 @@ Scoring criteria
 import (
 	"bytes"
 	"fmt"
+	"os"
 	"strings"
 	"unicode"
 	"unicode/utf8"
@@ -89,6 +90,10 @@ import (
 
 var DEBUG bool
 
+var delimiterChars = "/,:;|"
+
+const whiteChars = " \t\n\v\f\r\x85\xA0"
+
 func indexAt(index int, max int, forward bool) int {
 	if forward {
 		return index
@@ -140,16 +145,78 @@ const (
 	bonusFirstCharMultiplier = 2
 )
 
+var (
+	// Extra bonus for word boundary after whitespace character or beginning of the string
+	bonusBoundaryWhite int16 = bonusBoundary + 2
+
+	// Extra bonus for word boundary after slash, colon, semi-colon, and comma
+	bonusBoundaryDelimiter int16 = bonusBoundary + 1
+
+	initialCharClass = charWhite
+
+	// A minor optimization that can give 15%+ performance boost
+	asciiCharClasses [unicode.MaxASCII + 1]charClass
+
+	// A minor optimization that can give yet another 5% performance boost
+	bonusMatrix [charNumber + 1][charNumber + 1]int16
+)
+
 type charClass int
 
 const (
-	charNonWord charClass = iota
+	charWhite charClass = iota
+	charNonWord
+	charDelimiter
 	charLower
 	charUpper
 	charLetter
 	charNumber
 )
 
+func Init(scheme string) bool {
+	switch scheme {
+	case "default":
+		bonusBoundaryWhite = bonusBoundary + 2
+		bonusBoundaryDelimiter = bonusBoundary + 1
+	case "path":
+		bonusBoundaryWhite = bonusBoundary
+		bonusBoundaryDelimiter = bonusBoundary + 1
+		if os.PathSeparator == '/' {
+			delimiterChars = "/"
+		} else {
+			delimiterChars = string([]rune{os.PathSeparator, '/'})
+		}
+		initialCharClass = charDelimiter
+	case "history":
+		bonusBoundaryWhite = bonusBoundary
+		bonusBoundaryDelimiter = bonusBoundary
+	default:
+		return false
+	}
+	for i := 0; i <= unicode.MaxASCII; i++ {
+		char := rune(i)
+		c := charNonWord
+		if char >= 'a' && char <= 'z' {
+			c = charLower
+		} else if char >= 'A' && char <= 'Z' {
+			c = charUpper
+		} else if char >= '0' && char <= '9' {
+			c = charNumber
+		} else if strings.ContainsRune(whiteChars, char) {
+			c = charWhite
+		} else if strings.ContainsRune(delimiterChars, char) {
+			c = charDelimiter
+		}
+		asciiCharClasses[i] = c
+	}
+	for i := 0; i <= int(charNumber); i++ {
+		for j := 0; j <= int(charNumber); j++ {
+			bonusMatrix[i][j] = bonusFor(charClass(i), charClass(j))
+		}
+	}
+	return true
+}
+
 func posArray(withPos bool, len int) *[]int {
 	if withPos {
 		pos := make([]int, 0, len)
@@ -174,17 +241,6 @@ func alloc32(offset int, slab *util.Slab, size int) (int, []int32) {
 	return offset, make([]int32, size)
 }
 
-func charClassOfAscii(char rune) charClass {
-	if char >= 'a' && char <= 'z' {
-		return charLower
-	} else if char >= 'A' && char <= 'Z' {
-		return charUpper
-	} else if char >= '0' && char <= '9' {
-		return charNumber
-	}
-	return charNonWord
-}
-
 func charClassOfNonAscii(char rune) charClass {
 	if unicode.IsLower(char) {
 		return charLower
@@ -194,36 +250,56 @@ func charClassOfNonAscii(char rune) charClass {
 		return charNumber
 	} else if unicode.IsLetter(char) {
 		return charLetter
+	} else if unicode.IsSpace(char) {
+		return charWhite
+	} else if strings.ContainsRune(delimiterChars, char) {
+		return charDelimiter
 	}
 	return charNonWord
 }
 
 func charClassOf(char rune) charClass {
 	if char <= unicode.MaxASCII {
-		return charClassOfAscii(char)
+		return asciiCharClasses[char]
 	}
 	return charClassOfNonAscii(char)
 }
 
 func bonusFor(prevClass charClass, class charClass) int16 {
-	if prevClass == charNonWord && class != charNonWord {
+	if class > charNonWord {
-		// Word boundary
+		switch prevClass {
-		return bonusBoundary
+		case charWhite:
-	} else if prevClass == charLower && class == charUpper ||
+			// Word boundary after whitespace
+			return bonusBoundaryWhite
+		case charDelimiter:
+			// Word boundary after a delimiter character
+			return bonusBoundaryDelimiter
+		case charNonWord:
+			// Word boundary
+			return bonusBoundary
+		}
+	}
+
+	if prevClass == charLower && class == charUpper ||
 		prevClass != charNumber && class == charNumber {
 		// camelCase letter123
 		return bonusCamel123
-	} else if class == charNonWord {
+	}
+
+	switch class {
+	case charNonWord, charDelimiter:
 		return bonusNonWord
+	case charWhite:
+		return bonusBoundaryWhite
 	}
 	return 0
 }
 
 func bonusAt(input *util.Chars, idx int) int16 {
 	if idx == 0 {
-		return bonusBoundary
+		return bonusBoundaryWhite
 	}
-	return bonusFor(charClassOf(input.Get(idx-1)), charClassOf(input.Get(idx)))
+	return bonusMatrix[charClassOf(input.Get(idx-1))][charClassOf(input.Get(idx))]
 }
 
 func normalizeRune(r rune) rune {
@@ -276,30 +352,45 @@ func isAscii(runes []rune) bool {
 	return true
 }
 
-func asciiFuzzyIndex(input *util.Chars, pattern []rune, caseSensitive bool) int {
+func asciiFuzzyIndex(input *util.Chars, pattern []rune, caseSensitive bool) (int, int) {
 	// Can't determine
 	if !input.IsBytes() {
-		return 0
+		return 0, input.Length()
 	}
 
 	// Not possible
 	if !isAscii(pattern) {
-		return -1
+		return -1, -1
 	}
 
-	firstIdx, idx := 0, 0
+	firstIdx, idx, lastIdx := 0, 0, 0
+	var b byte
 	for pidx := 0; pidx < len(pattern); pidx++ {
-		idx = trySkip(input, caseSensitive, byte(pattern[pidx]), idx)
+		b = byte(pattern[pidx])
+		idx = trySkip(input, caseSensitive, b, idx)
 		if idx < 0 {
-			return -1
+			return -1, -1
 		}
 		if pidx == 0 && idx > 0 {
 			// Step back to find the right bonus point
 			firstIdx = idx - 1
 		}
+		lastIdx = idx
 		idx++
 	}
-	return firstIdx
+
+	// Find the last appearance of the last character of the pattern to limit the search scope
+	bu := b
+	if !caseSensitive && b >= 'a' && b <= 'z' {
+		bu = b - 32
+	}
+	scope := input.Bytes()[lastIdx:]
+	for offset := len(scope) - 1; offset > 0; offset-- {
+		if scope[offset] == b || scope[offset] == bu {
+			return firstIdx, lastIdx + offset + 1
+		}
+	}
+	return firstIdx, lastIdx + 1
 }
 
 func debugV2(T []rune, pattern []rune, F []int32, lastIdx int, H []int16, C []int16) {
@@ -348,6 +439,9 @@ func FuzzyMatchV2(caseSensitive bool, normalize bool, forward bool, input *util.
 		return Result{0, 0, 0}, posArray(withPos, M)
 	}
 	N := input.Length()
+	if M > N {
+		return Result{-1, -1, 0}, nil
+	}
 
 	// Since O(nm) algorithm can be prohibitively expensive for large input,
 	// we fall back to the greedy algorithm.
@@ -356,10 +450,12 @@ func FuzzyMatchV2(caseSensitive bool, normalize bool, forward bool, input *util.
 	}
 
 	// Phase 1. Optimized search for ASCII string
-	idx := asciiFuzzyIndex(input, pattern, caseSensitive)
+	minIdx, maxIdx := asciiFuzzyIndex(input, pattern, caseSensitive)
-	if idx < 0 {
+	if minIdx < 0 {
 		return Result{-1, -1, 0}, nil
 	}
+	// fmt.Println(N, maxIdx, idx, maxIdx-idx, input.ToString())
+	N = maxIdx - minIdx
 
 	// Reuse pre-allocated integer slice to avoid unnecessary sweeping of garbages
 	offset16 := 0
@@ -372,20 +468,19 @@ func FuzzyMatchV2(caseSensitive bool, normalize bool, forward bool, input *util.
 	offset32, F := alloc32(offset32, slab, M)
 	// Rune array
 	_, T := alloc32(offset32, slab, N)
-	input.CopyRunes(T)
+	input.CopyRunes(T, minIdx)
 
 	// Phase 2. Calculate bonus for each point
 	maxScore, maxScorePos := int16(0), 0
 	pidx, lastIdx := 0, 0
-	pchar0, pchar, prevH0, prevClass, inGap := pattern[0], pattern[0], int16(0), charNonWord, false
+	pchar0, pchar, prevH0, prevClass, inGap := pattern[0], pattern[0], int16(0), initialCharClass, false
-	Tsub := T[idx:]
+	for off, char := range T {
-	H0sub, C0sub, Bsub := H0[idx:][:len(Tsub)], C0[idx:][:len(Tsub)], B[idx:][:len(Tsub)]
-	for off, char := range Tsub {
 		var class charClass
 		if char <= unicode.MaxASCII {
-			class = charClassOfAscii(char)
+			class = asciiCharClasses[char]
 			if !caseSensitive && class == charUpper {
 				char += 32
+				T[off] = char
 			}
 		} else {
 			class = charClassOfNonAscii(char)
@@ -395,53 +490,53 @@ func FuzzyMatchV2(caseSensitive bool, normalize bool, forward bool, input *util.
 			if normalize {
 				char = normalizeRune(char)
 			}
+			T[off] = char
 		}
 
-		Tsub[off] = char
+		bonus := bonusMatrix[prevClass][class]
-		bonus := bonusFor(prevClass, class)
+		B[off] = bonus
-		Bsub[off] = bonus
 		prevClass = class
 
 		if char == pchar {
 			if pidx < M {
-				F[pidx] = int32(idx + off)
+				F[pidx] = int32(off)
 				pidx++
 				pchar = pattern[util.Min(pidx, M-1)]
 			}
-			lastIdx = idx + off
+			lastIdx = off
 		}
 
 		if char == pchar0 {
 			score := scoreMatch + bonus*bonusFirstCharMultiplier
-			H0sub[off] = score
+			H0[off] = score
-			C0sub[off] = 1
+			C0[off] = 1
 			if M == 1 && (forward && score > maxScore || !forward && score >= maxScore) {
-				maxScore, maxScorePos = score, idx+off
+				maxScore, maxScorePos = score, off
-				if forward && bonus == bonusBoundary {
+				if forward && bonus >= bonusBoundary {
 					break
 				}
 			}
 			inGap = false
 		} else {
 			if inGap {
-				H0sub[off] = util.Max16(prevH0+scoreGapExtension, 0)
+				H0[off] = util.Max16(prevH0+scoreGapExtension, 0)
 			} else {
-				H0sub[off] = util.Max16(prevH0+scoreGapStart, 0)
+				H0[off] = util.Max16(prevH0+scoreGapStart, 0)
 			}
-			C0sub[off] = 0
+			C0[off] = 0
 			inGap = true
 		}
-		prevH0 = H0sub[off]
+		prevH0 = H0[off]
 	}
 	if pidx != M {
 		return Result{-1, -1, 0}, nil
 	}
 	if M == 1 {
-		result := Result{maxScorePos, maxScorePos + 1, int(maxScore)}
+		result := Result{minIdx + maxScorePos, minIdx + maxScorePos + 1, int(maxScore)}
 		if !withPos {
 			return result, nil
 		}
-		pos := []int{maxScorePos}
+		pos := []int{minIdx + maxScorePos}
 		return result, &pos
 	}
 
@@ -486,11 +581,14 @@ func FuzzyMatchV2(caseSensitive bool, normalize bool, forward bool, input *util.
 				s1 = Hdiag[off] + scoreMatch
 				b := Bsub[off]
 				consecutive = Cdiag[off] + 1
-				// Break consecutive chunk
+				if consecutive > 1 {
-				if b == bonusBoundary {
+					fb := B[col-int(consecutive)+1]
-					consecutive = 1
+					// Break consecutive chunk
-				} else if consecutive > 1 {
+					if b >= bonusBoundary && b > fb {
-					b = util.Max16(b, util.Max16(bonusConsecutive, B[col-int(consecutive)+1]))
+						consecutive = 1
+					} else {
+						b = util.Max16(b, util.Max16(bonusConsecutive, fb))
+					}
 				}
 				if s1+b < s2 {
 					s1 += Bsub[off]
@@ -535,7 +633,7 @@ func FuzzyMatchV2(caseSensitive bool, normalize bool, forward bool, input *util.
 			}
 
 			if s > s1 && (s > s2 || s == s2 && preferMatch) {
-				*pos = append(*pos, j)
+				*pos = append(*pos, j+minIdx)
 				if i == 0 {
 					break
 				}
@@ -548,14 +646,14 @@ func FuzzyMatchV2(caseSensitive bool, normalize bool, forward bool, input *util.
 	// Start offset we return here is only relevant when begin tiebreak is used.
 	// However finding the accurate offset requires backtracking, and we don't
 	// want to pay extra cost for the option that has lost its importance.
-	return Result{j, maxScorePos + 1, int(maxScore)}, pos
+	return Result{minIdx + j, minIdx + maxScorePos + 1, int(maxScore)}, pos
 }
 
 // Implement the same sorting criteria as V2
 func calculateScore(caseSensitive bool, normalize bool, text *util.Chars, pattern []rune, sidx int, eidx int, withPos bool) (int, *[]int) {
 	pidx, score, inGap, consecutive, firstBonus := 0, 0, false, 0, int16(0)
 	pos := posArray(withPos, len(pattern))
-	prevClass := charNonWord
+	prevClass := initialCharClass
 	if sidx > 0 {
 		prevClass = charClassOf(text.Get(sidx - 1))
 	}
@@ -578,12 +676,12 @@ func calculateScore(caseSensitive bool, normalize bool, text *util.Chars, patter
 				*pos = append(*pos, idx)
 			}
 			score += scoreMatch
-			bonus := bonusFor(prevClass, class)
+			bonus := bonusMatrix[prevClass][class]
 			if consecutive == 0 {
 				firstBonus = bonus
 			} else {
 				// Break consecutive chunk
-				if bonus == bonusBoundary {
+				if bonus >= bonusBoundary && bonus > firstBonus {
 					firstBonus = bonus
 				}
 				bonus = util.Max16(util.Max16(bonus, firstBonus), bonusConsecutive)
@@ -616,7 +714,8 @@ func FuzzyMatchV1(caseSensitive bool, normalize bool, forward bool, text *util.C
 	if len(pattern) == 0 {
 		return Result{0, 0, 0}, nil
 	}
-	if asciiFuzzyIndex(text, pattern, caseSensitive) < 0 {
+	idx, _ := asciiFuzzyIndex(text, pattern, caseSensitive)
+	if idx < 0 {
 		return Result{-1, -1, 0}, nil
 	}
 
@@ -699,6 +798,14 @@ func FuzzyMatchV1(caseSensitive bool, normalize bool, forward bool, text *util.C
 // The solution is much cheaper since there is only one possible alignment of
 // the pattern.
 func ExactMatchNaive(caseSensitive bool, normalize bool, forward bool, text *util.Chars, pattern []rune, withPos bool, slab *util.Slab) (Result, *[]int) {
+	return exactMatchNaive(caseSensitive, normalize, forward, false, text, pattern, withPos, slab)
+}
+
+func ExactMatchBoundary(caseSensitive bool, normalize bool, forward bool, text *util.Chars, pattern []rune, withPos bool, slab *util.Slab) (Result, *[]int) {
+	return exactMatchNaive(caseSensitive, normalize, forward, true, text, pattern, withPos, slab)
+}
+
+func exactMatchNaive(caseSensitive bool, normalize bool, forward bool, boundaryCheck bool, text *util.Chars, pattern []rune, withPos bool, slab *util.Slab) (Result, *[]int) {
 	if len(pattern) == 0 {
 		return Result{0, 0, 0}, nil
 	}
@@ -710,7 +817,8 @@ func ExactMatchNaive(caseSensitive bool, normalize bool, forward bool, text *uti
 		return Result{-1, -1, 0}, nil
 	}
 
-	if asciiFuzzyIndex(text, pattern, caseSensitive) < 0 {
+	idx, _ := asciiFuzzyIndex(text, pattern, caseSensitive)
+	if idx < 0 {
 		return Result{-1, -1, 0}, nil
 	}
 
@@ -732,16 +840,28 @@ func ExactMatchNaive(caseSensitive bool, normalize bool, forward bool, text *uti
 		}
 		pidx_ := indexAt(pidx, lenPattern, forward)
 		pchar := pattern[pidx_]
-		if pchar == char {
+		ok := pchar == char
+		if ok {
 			if pidx_ == 0 {
 				bonus = bonusAt(text, index_)
 			}
+			if boundaryCheck {
+				ok = bonus >= bonusBoundary
+				if ok && pidx_ == 0 {
+					ok = index_ == 0 || charClassOf(text.Get(index_-1)) <= charDelimiter
+				}
+				if ok && pidx_ == len(pattern)-1 {
+					ok = index_ == lenRunes-1 || charClassOf(text.Get(index_+1)) <= charDelimiter
+				}
+			}
+		}
+		if ok {
 			pidx++
 			if pidx == lenPattern {
 				if bonus > bestBonus {
 					bestPos, bestBonus = index, bonus
 				}
-				if bonus == bonusBoundary {
+				if bonus >= bonusBoundary {
 					break
 				}
 				index -= pidx - 1
@@ -761,7 +881,23 @@ func ExactMatchNaive(caseSensitive bool, normalize bool, forward bool, text *uti
 			sidx = lenRunes - (bestPos + 1)
 			eidx = lenRunes - (bestPos - lenPattern + 1)
 		}
-		score, _ := calculateScore(caseSensitive, normalize, text, pattern, sidx, eidx, false)
+		var score int
+		if boundaryCheck {
+			// Underscore boundaries should be ranked lower than the other types of boundaries
+			score = int(bonus)
+			deduct := int(bonus-bonusBoundary) + 1
+			if sidx > 0 && text.Get(sidx-1) == '_' {
+				score -= deduct + 1
+				deduct = 1
+			}
+			if eidx < lenRunes && text.Get(eidx) == '_' {
+				score -= deduct
+			}
+			// Add base score so that this can compete with other match types e.g. 'foo' | bar
+			score += scoreMatch*lenPattern + int(bonusBoundaryWhite)*(lenPattern+1)
+		} else {
+			score, _ = calculateScore(caseSensitive, normalize, text, pattern, sidx, eidx, false)
+		}
 		return Result{sidx, eidx, score}, nil
 	}
 	return Result{-1, -1, 0}, nil
@@ -877,8 +1013,8 @@ func EqualMatch(caseSensitive bool, normalize bool, forward bool, text *util.Cha
 		match = runesStr == string(pattern)
 	}
 	if match {
-		return Result{trimmedLen, trimmedLen + lenPattern, (scoreMatch+bonusBoundary)*lenPattern +
+		return Result{trimmedLen, trimmedLen + lenPattern, (scoreMatch+int(bonusBoundaryWhite))*lenPattern +
-			(bonusFirstCharMultiplier-1)*bonusBoundary}, nil
+			(bonusFirstCharMultiplier-1)*int(bonusBoundaryWhite)}, nil
 	}
 	return Result{-1, -1, 0}, nil
 }

src/algo/algo_test.go

@@ -9,6 +9,10 @@ import (
 	"github.com/junegunn/fzf/src/util"
 )
 
+func init() {
+	Init("default")
+}
+
 func assertMatch(t *testing.T, fun Algo, caseSensitive, forward bool, input, pattern string, sidx int, eidx int, score int) {
 	assertMatch2(t, fun, caseSensitive, false, forward, input, pattern, sidx, eidx, score)
 }
@@ -45,29 +49,29 @@ func TestFuzzyMatch(t *testing.T) {
 			assertMatch(t, fn, false, forward, "fooBarbaz1", "oBZ", 2, 9,
 				scoreMatch*3+bonusCamel123+scoreGapStart+scoreGapExtension*3)
 			assertMatch(t, fn, false, forward, "foo bar baz", "fbb", 0, 9,
-				scoreMatch*3+bonusBoundary*bonusFirstCharMultiplier+
+				scoreMatch*3+int(bonusBoundaryWhite)*bonusFirstCharMultiplier+
-					bonusBoundary*2+2*scoreGapStart+4*scoreGapExtension)
+					int(bonusBoundaryWhite)*2+2*scoreGapStart+4*scoreGapExtension)
 			assertMatch(t, fn, false, forward, "/AutomatorDocument.icns", "rdoc", 9, 13,
 				scoreMatch*4+bonusCamel123+bonusConsecutive*2)
 			assertMatch(t, fn, false, forward, "/man1/zshcompctl.1", "zshc", 6, 10,
-				scoreMatch*4+bonusBoundary*bonusFirstCharMultiplier+bonusBoundary*3)
+				scoreMatch*4+int(bonusBoundaryDelimiter)*bonusFirstCharMultiplier+int(bonusBoundaryDelimiter)*3)
 			assertMatch(t, fn, false, forward, "/.oh-my-zsh/cache", "zshc", 8, 13,
-				scoreMatch*4+bonusBoundary*bonusFirstCharMultiplier+bonusBoundary*3+scoreGapStart)
+				scoreMatch*4+bonusBoundary*bonusFirstCharMultiplier+bonusBoundary*2+scoreGapStart+int(bonusBoundaryDelimiter))
 			assertMatch(t, fn, false, forward, "ab0123 456", "12356", 3, 10,
 				scoreMatch*5+bonusConsecutive*3+scoreGapStart+scoreGapExtension)
 			assertMatch(t, fn, false, forward, "abc123 456", "12356", 3, 10,
 				scoreMatch*5+bonusCamel123*bonusFirstCharMultiplier+bonusCamel123*2+bonusConsecutive+scoreGapStart+scoreGapExtension)
 			assertMatch(t, fn, false, forward, "foo/bar/baz", "fbb", 0, 9,
-				scoreMatch*3+bonusBoundary*bonusFirstCharMultiplier+
+				scoreMatch*3+int(bonusBoundaryWhite)*bonusFirstCharMultiplier+
-					bonusBoundary*2+2*scoreGapStart+4*scoreGapExtension)
+					int(bonusBoundaryDelimiter)*2+2*scoreGapStart+4*scoreGapExtension)
 			assertMatch(t, fn, false, forward, "fooBarBaz", "fbb", 0, 7,
-				scoreMatch*3+bonusBoundary*bonusFirstCharMultiplier+
+				scoreMatch*3+int(bonusBoundaryWhite)*bonusFirstCharMultiplier+
 					bonusCamel123*2+2*scoreGapStart+2*scoreGapExtension)
 			assertMatch(t, fn, false, forward, "foo barbaz", "fbb", 0, 8,
-				scoreMatch*3+bonusBoundary*bonusFirstCharMultiplier+bonusBoundary+
+				scoreMatch*3+int(bonusBoundaryWhite)*bonusFirstCharMultiplier+int(bonusBoundaryWhite)+
 					scoreGapStart*2+scoreGapExtension*3)
 			assertMatch(t, fn, false, forward, "fooBar Baz", "foob", 0, 4,
-				scoreMatch*4+bonusBoundary*bonusFirstCharMultiplier+bonusBoundary*3)
+				scoreMatch*4+int(bonusBoundaryWhite)*bonusFirstCharMultiplier+int(bonusBoundaryWhite)*3)
 			assertMatch(t, fn, false, forward, "xFoo-Bar Baz", "foo-b", 1, 6,
 				scoreMatch*5+bonusCamel123*bonusFirstCharMultiplier+bonusCamel123*2+
 					bonusNonWord+bonusBoundary)
@@ -75,14 +79,14 @@ func TestFuzzyMatch(t *testing.T) {
 			assertMatch(t, fn, true, forward, "fooBarbaz", "oBz", 2, 9,
 				scoreMatch*3+bonusCamel123+scoreGapStart+scoreGapExtension*3)
 			assertMatch(t, fn, true, forward, "Foo/Bar/Baz", "FBB", 0, 9,
-				scoreMatch*3+bonusBoundary*(bonusFirstCharMultiplier+2)+
+				scoreMatch*3+int(bonusBoundaryWhite)*bonusFirstCharMultiplier+int(bonusBoundaryDelimiter)*2+
 					scoreGapStart*2+scoreGapExtension*4)
 			assertMatch(t, fn, true, forward, "FooBarBaz", "FBB", 0, 7,
-				scoreMatch*3+bonusBoundary*bonusFirstCharMultiplier+bonusCamel123*2+
+				scoreMatch*3+int(bonusBoundaryWhite)*bonusFirstCharMultiplier+bonusCamel123*2+
 					scoreGapStart*2+scoreGapExtension*2)
 			assertMatch(t, fn, true, forward, "FooBar Baz", "FooB", 0, 4,
-				scoreMatch*4+bonusBoundary*bonusFirstCharMultiplier+bonusBoundary*2+
+				scoreMatch*4+int(bonusBoundaryWhite)*bonusFirstCharMultiplier+int(bonusBoundaryWhite)*2+
-					util.Max(bonusCamel123, bonusBoundary))
+					util.Max(bonusCamel123, int(bonusBoundaryWhite)))
 
 			// Consecutive bonus updated
 			assertMatch(t, fn, true, forward, "foo-bar", "o-ba", 2, 6,
@@ -98,10 +102,10 @@ func TestFuzzyMatch(t *testing.T) {
 
 func TestFuzzyMatchBackward(t *testing.T) {
 	assertMatch(t, FuzzyMatchV1, false, true, "foobar fb", "fb", 0, 4,
-		scoreMatch*2+bonusBoundary*bonusFirstCharMultiplier+
+		scoreMatch*2+int(bonusBoundaryWhite)*bonusFirstCharMultiplier+
 			scoreGapStart+scoreGapExtension)
 	assertMatch(t, FuzzyMatchV1, false, false, "foobar fb", "fb", 7, 9,
-		scoreMatch*2+bonusBoundary*bonusFirstCharMultiplier+bonusBoundary)
+		scoreMatch*2+int(bonusBoundaryWhite)*bonusFirstCharMultiplier+int(bonusBoundaryWhite))
 }
 
 func TestExactMatchNaive(t *testing.T) {
@@ -114,9 +118,9 @@ func TestExactMatchNaive(t *testing.T) {
 		assertMatch(t, ExactMatchNaive, false, dir, "/AutomatorDocument.icns", "rdoc", 9, 13,
 			scoreMatch*4+bonusCamel123+bonusConsecutive*2)
 		assertMatch(t, ExactMatchNaive, false, dir, "/man1/zshcompctl.1", "zshc", 6, 10,
-			scoreMatch*4+bonusBoundary*(bonusFirstCharMultiplier+3))
+			scoreMatch*4+int(bonusBoundaryDelimiter)*(bonusFirstCharMultiplier+3))
 		assertMatch(t, ExactMatchNaive, false, dir, "/.oh-my-zsh/cache", "zsh/c", 8, 13,
-			scoreMatch*5+bonusBoundary*(bonusFirstCharMultiplier+4))
+			scoreMatch*5+bonusBoundary*(bonusFirstCharMultiplier+3)+int(bonusBoundaryDelimiter))
 	}
 }
 
@@ -128,7 +132,7 @@ func TestExactMatchNaiveBackward(t *testing.T) {
 }
 
 func TestPrefixMatch(t *testing.T) {
-	score := (scoreMatch+bonusBoundary)*3 + bonusBoundary*(bonusFirstCharMultiplier-1)
+	score := scoreMatch*3 + int(bonusBoundaryWhite)*bonusFirstCharMultiplier + int(bonusBoundaryWhite)*2
 
 	for _, dir := range []bool{true, false} {
 		assertMatch(t, PrefixMatch, true, dir, "fooBarbaz", "Foo", -1, -1, 0)
@@ -156,9 +160,10 @@ func TestSuffixMatch(t *testing.T) {
 		// Strip trailing white space from the string
 		assertMatch(t, SuffixMatch, false, dir, "fooBarbaz ", "baz", 6, 9,
 			scoreMatch*3+bonusConsecutive*2)
+
 		// Only when the pattern doesn't end with a space
 		assertMatch(t, SuffixMatch, false, dir, "fooBarbaz ", "baz ", 6, 10,
-			scoreMatch*4+bonusConsecutive*2+bonusNonWord)
+			scoreMatch*4+bonusConsecutive*2+int(bonusBoundaryWhite))
 	}
 }
 
@@ -182,9 +187,9 @@ func TestNormalize(t *testing.T) {
 				input, pattern, sidx, eidx, score)
 		}
 	}
-	test("Só Danço Samba", "So", 0, 2, 56, FuzzyMatchV1, FuzzyMatchV2, PrefixMatch, ExactMatchNaive)
+	test("Só Danço Samba", "So", 0, 2, 62, FuzzyMatchV1, FuzzyMatchV2, PrefixMatch, ExactMatchNaive)
-	test("Só Danço Samba", "sodc", 0, 7, 89, FuzzyMatchV1, FuzzyMatchV2)
+	test("Só Danço Samba", "sodc", 0, 7, 97, FuzzyMatchV1, FuzzyMatchV2)
-	test("Danço", "danco", 0, 5, 128, FuzzyMatchV1, FuzzyMatchV2, PrefixMatch, SuffixMatch, ExactMatchNaive, EqualMatch)
+	test("Danço", "danco", 0, 5, 140, FuzzyMatchV1, FuzzyMatchV2, PrefixMatch, SuffixMatch, ExactMatchNaive, EqualMatch)
 }
 
 func TestLongString(t *testing.T) {

src/algo/normalize.go

@@ -3,7 +3,7 @@
 
 package algo
 
-var normalized map[rune]rune = map[rune]rune{
+var normalized = map[rune]rune{
 	0x00E1: 'a', //  WITH ACUTE, LATIN SMALL LETTER
 	0x0103: 'a', //  WITH BREVE, LATIN SMALL LETTER
 	0x01CE: 'a', //  WITH CARON, LATIN SMALL LETTER

src/ansi.go

@@ -1,6 +1,7 @@
 package fzf
 
 import (
+	"fmt"
 	"strconv"
 	"strings"
 	"unicode/utf8"
@@ -13,22 +14,28 @@ type ansiOffset struct {
 	color  ansiState
 }
 
+type url struct {
+	uri    string
+	params string
+}
+
 type ansiState struct {
 	fg   tui.Color
 	bg   tui.Color
 	attr tui.Attr
 	lbg  tui.Color
+	url  *url
 }
 
 func (s *ansiState) colored() bool {
-	return s.fg != -1 || s.bg != -1 || s.attr > 0 || s.lbg >= 0
+	return s.fg != -1 || s.bg != -1 || s.attr > 0 || s.lbg >= 0 || s.url != nil
 }
 
 func (s *ansiState) equals(t *ansiState) bool {
 	if t == nil {
 		return !s.colored()
 	}
-	return s.fg == t.fg && s.bg == t.bg && s.attr == t.attr && s.lbg == t.lbg
+	return s.fg == t.fg && s.bg == t.bg && s.attr == t.attr && s.lbg == t.lbg && s.url == t.url
 }
 
 func (s *ansiState) ToString() string {
@@ -55,9 +62,16 @@ func (s *ansiState) ToString() string {
 	if s.attr&tui.Reverse > 0 {
 		ret += "7;"
 	}
+	if s.attr&tui.StrikeThrough > 0 {
+		ret += "9;"
+	}
 	ret += toAnsiString(s.fg, 30) + toAnsiString(s.bg, 40)
 
-	return "\x1b[" + strings.TrimSuffix(ret, ";") + "m"
+	ret = "\x1b[" + strings.TrimSuffix(ret, ";") + "m"
+	if s.url != nil {
+		ret = fmt.Sprintf("\x1b]8;%s;%s\x1b\\%s\x1b]8;;\x1b", s.url.params, s.url.uri, ret)
+	}
+	return ret
 }
 
 func toAnsiString(color tui.Color, offset int) string {
@@ -85,7 +99,7 @@ func isPrint(c uint8) bool {
 }
 
 func matchOperatingSystemCommand(s string) int {
-	// `\x1b][0-9];[[:print:]]+(?:\x1b\\\\|\x07)`
+	// `\x1b][0-9][;:][[:print:]]+(?:\x1b\\\\|\x07)`
 	//                        ^ match starting here
 	//
 	i := 5 // prefix matched in nextAnsiEscapeSequence()
@@ -95,38 +109,54 @@ func matchOperatingSystemCommand(s string) int {
 		if s[i] == '\x07' {
 			return i + 1
 		}
+		// `\x1b]8;PARAMS;URI\x1b\\TITLE\x1b]8;;\x1b`
+		//                   ------
 		if s[i] == '\x1b' && i < len(s)-1 && s[i+1] == '\\' {
 			return i + 2
 		}
 	}
+
+	// `\x1b]8;PARAMS;URI\x1b\\TITLE\x1b]8;;\x1b`
+	//                              ------------
+	if i < len(s) && s[:i+1] == "\x1b]8;;\x1b" {
+		return i + 1
+	}
+
 	return -1
 }
 
 func matchControlSequence(s string) int {
-	// `\x1b[\\[()][0-9;?]*[a-zA-Z@]`
+	// `\x1b[\\[()][0-9;:?]*[a-zA-Z@]`
-	//                    ^ match starting here
+	//                     ^ match starting here
 	//
 	i := 2 // prefix matched in nextAnsiEscapeSequence()
-	for ; i < len(s) && (isNumeric(s[i]) || s[i] == ';' || s[i] == '?'); i++ {
+	for ; i < len(s); i++ {
-	}
-	if i < len(s) {
 		c := s[i]
-		if 'a' <= c && c <= 'z' || 'A' <= c && c <= 'Z' || c == '@' {
+		switch c {
-			return i + 1
+		case '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', ';', ':', '?':
+			// ok
+		default:
+			if 'a' <= c && c <= 'z' || 'A' <= c && c <= 'Z' || c == '@' {
+				return i + 1
+			}
+			return -1
 		}
 	}
 	return -1
 }
 
 func isCtrlSeqStart(c uint8) bool {
-	return c == '\\' || c == '[' || c == '(' || c == ')'
+	switch c {
+	case '\\', '[', '(', ')':
+		return true
+	}
+	return false
 }
 
 // nextAnsiEscapeSequence returns the ANSI escape sequence and is equivalent to
 // calling FindStringIndex() on the below regex (which was originally used):
 //
-// "(?:\x1b[\\[()][0-9;?]*[a-zA-Z@]|\x1b][0-9];[[:print:]]+(?:\x1b\\\\|\x07)|\x1b.|[\x0e\x0f]|.\x08)"
+// "(?:\x1b[\\[()][0-9;:?]*[a-zA-Z@]|\x1b][0-9][;:][[:print:]]+(?:\x1b\\\\|\x07)|\x1b.|[\x0e\x0f]|.\x08)"
-//
 func nextAnsiEscapeSequence(s string) (int, int) {
 	// fast check for ANSI escape sequences
 	i := 0
@@ -154,16 +184,16 @@ Loop:
 				return i - n, i + 1
 			}
 		case '\x1b':
-			// match: `\x1b[\\[()][0-9;?]*[a-zA-Z@]`
+			// match: `\x1b[\\[()][0-9;:?]*[a-zA-Z@]`
 			if i+2 < len(s) && isCtrlSeqStart(s[i+1]) {
 				if j := matchControlSequence(s[i:]); j != -1 {
 					return i, i + j
 				}
 			}
 
-			// match: `\x1b][0-9];[[:print:]]+(?:\x1b\\\\|\x07)`
+			// match: `\x1b][0-9][;:][[:print:]]+(?:\x1b\\\\|\x07)`
 			if i+5 < len(s) && s[i+1] == ']' && isNumeric(s[i+2]) &&
-				s[i+3] == ';' && isPrint(s[i+4]) {
+				(s[i+3] == ';' || s[i+3] == ':') && isPrint(s[i+4]) {
 
 				if j := matchOperatingSystemCommand(s[i:]); j != -1 {
 					return i, i + j
@@ -280,9 +310,20 @@ func extractColor(str string, state *ansiState, proc func(string, *ansiState) bo
 	return trimmed, nil, state
 }
 
-func parseAnsiCode(s string) (int, string) {
+func parseAnsiCode(s string, delimiter byte) (int, byte, string) {
 	var remaining string
-	if i := strings.IndexByte(s, ';'); i >= 0 {
+	var i int
+	if delimiter == 0 {
+		// Faster than strings.IndexAny(";:")
+		i = strings.IndexByte(s, ';')
+		if i < 0 {
+			i = strings.IndexByte(s, ':')
+		}
+	} else {
+		i = strings.IndexByte(s, delimiter)
+	}
+	if i >= 0 {
+		delimiter = s[i]
 		remaining = s[i+1:]
 		s = s[:i]
 	}
@@ -291,29 +332,37 @@ func parseAnsiCode(s string) (int, string) {
 		// Inlined version of strconv.Atoi() that only handles positive
 		// integers and does not allocate on error.
 		code := 0
-		for _, ch := range []byte(s) {
+		for _, ch := range stringBytes(s) {
 			ch -= '0'
 			if ch > 9 {
-				return -1, remaining
+				return -1, delimiter, remaining
 			}
 			code = code*10 + int(ch)
 		}
-		return code, remaining
+		return code, delimiter, remaining
 	}
 
-	return -1, remaining
+	return -1, delimiter, remaining
 }
 
 func interpretCode(ansiCode string, prevState *ansiState) ansiState {
 	var state ansiState
 	if prevState == nil {
-		state = ansiState{-1, -1, 0, -1}
+		state = ansiState{-1, -1, 0, -1, nil}
 	} else {
-		state = ansiState{prevState.fg, prevState.bg, prevState.attr, prevState.lbg}
+		state = ansiState{prevState.fg, prevState.bg, prevState.attr, prevState.lbg, prevState.url}
 	}
 	if ansiCode[0] != '\x1b' || ansiCode[1] != '[' || ansiCode[len(ansiCode)-1] != 'm' {
 		if prevState != nil && strings.HasSuffix(ansiCode, "0K") {
 			state.lbg = prevState.bg
+		} else if ansiCode == "\x1b]8;;\x1b\\" { // End of a hyperlink
+			state.url = nil
+		} else if strings.HasPrefix(ansiCode, "\x1b]8;") && strings.HasSuffix(ansiCode, "\x1b\\") {
+			if paramsEnd := strings.IndexRune(ansiCode[4:], ';'); paramsEnd >= 0 {
+				params := ansiCode[4 : 4+paramsEnd]
+				uri := ansiCode[5+paramsEnd : len(ansiCode)-2]
+				state.url = &url{uri: uri, params: params}
+			}
 		}
 		return state
 	}
@@ -329,9 +378,12 @@ func interpretCode(ansiCode string, prevState *ansiState) ansiState {
 	state256 := 0
 	ptr := &state.fg
 
+	var delimiter byte
+	count := 0
 	for len(ansiCode) != 0 {
 		var num int
-		if num, ansiCode = parseAnsiCode(ansiCode); num != -1 {
+		if num, delimiter, ansiCode = parseAnsiCode(ansiCode, delimiter); num != -1 {
+			count++
 			switch state256 {
 			case 0:
 				switch num {
@@ -357,10 +409,21 @@ func interpretCode(ansiCode string, prevState *ansiState) ansiState {
 					state.attr = state.attr | tui.Blink
 				case 7:
 					state.attr = state.attr | tui.Reverse
+				case 9:
+					state.attr = state.attr | tui.StrikeThrough
+				case 22:
+					state.attr = state.attr &^ tui.Bold
+					state.attr = state.attr &^ tui.Dim
 				case 23: // tput rmso
 					state.attr = state.attr &^ tui.Italic
 				case 24: // tput rmul
 					state.attr = state.attr &^ tui.Underline
+				case 25:
+					state.attr = state.attr &^ tui.Blink
+				case 27:
+					state.attr = state.attr &^ tui.Reverse
+				case 29:
+					state.attr = state.attr &^ tui.StrikeThrough
 				case 0:
 					state.fg = -1
 					state.bg = -1
@@ -402,6 +465,13 @@ func interpretCode(ansiCode string, prevState *ansiState) ansiState {
 		}
 	}
 
+	// Empty sequence: reset
+	if count == 0 {
+		state.fg = -1
+		state.bg = -1
+		state.attr = 0
+	}
+
 	if state256 > 0 {
 		*ptr = -1
 	}

src/ansi_test.go

@@ -15,14 +15,14 @@ import (
 // testing nextAnsiEscapeSequence().
 //
 // References:
-// 	- https://github.com/gnachman/iTerm2
+//   - https://github.com/gnachman/iTerm2
-// 	- https://web.archive.org/web/20090204053813/http://ascii-table.com/ansi-escape-sequences.php
+//   - https://web.archive.org/web/20090204053813/http://ascii-table.com/ansi-escape-sequences.php
-//      (archived from http://ascii-table.com/ansi-escape-sequences.php)
+//     (archived from http://ascii-table.com/ansi-escape-sequences.php)
-// 	- https://web.archive.org/web/20090227051140/http://ascii-table.com/ansi-escape-sequences-vt-100.php
+//   - https://web.archive.org/web/20090227051140/http://ascii-table.com/ansi-escape-sequences-vt-100.php
-//      (archived from http://ascii-table.com/ansi-escape-sequences-vt-100.php)
+//     (archived from http://ascii-table.com/ansi-escape-sequences-vt-100.php)
-// 	- http://tldp.org/HOWTO/Bash-Prompt-HOWTO/x405.html
+//   - http://tldp.org/HOWTO/Bash-Prompt-HOWTO/x405.html
-// 	- https://invisible-island.net/xterm/ctlseqs/ctlseqs.html
+//   - https://invisible-island.net/xterm/ctlseqs/ctlseqs.html
-var ansiRegexReference = regexp.MustCompile("(?:\x1b[\\[()][0-9;]*[a-zA-Z@]|\x1b][0-9];[[:print:]]+(?:\x1b\\\\|\x07)|\x1b.|[\x0e\x0f]|.\x08)")
+var ansiRegexReference = regexp.MustCompile("(?:\x1b[\\[()][0-9;:]*[a-zA-Z@]|\x1b][0-9][;:][[:print:]]+(?:\x1b\\\\|\x07)|\x1b.|[\x0e\x0f]|.\x08)")
 
 func testParserReference(t testing.TB, str string) {
 	t.Helper()
@@ -342,12 +342,15 @@ func TestAnsiCodeStringConversion(t *testing.T) {
 		state := interpretCode(code, prevState)
 		if expected != state.ToString() {
 			t.Errorf("expected: %s, actual: %s",
-				strings.Replace(expected, "\x1b[", "\\x1b[", -1),
+				strings.ReplaceAll(expected, "\x1b[", "\\x1b["),
-				strings.Replace(state.ToString(), "\x1b[", "\\x1b[", -1))
+				strings.ReplaceAll(state.ToString(), "\x1b[", "\\x1b["))
 		}
 	}
 	assert("\x1b[m", nil, "")
 	assert("\x1b[m", &ansiState{attr: tui.Blink, lbg: -1}, "")
+	assert("\x1b[0m", &ansiState{fg: 4, bg: 4, lbg: -1}, "")
+	assert("\x1b[;m", &ansiState{fg: 4, bg: 4, lbg: -1}, "")
+	assert("\x1b[;;m", &ansiState{fg: 4, bg: 4, lbg: -1}, "")
 
 	assert("\x1b[31m", nil, "\x1b[31;49m")
 	assert("\x1b[41m", nil, "\x1b[39;41m")
@@ -358,6 +361,7 @@ func TestAnsiCodeStringConversion(t *testing.T) {
 	assert("\x1b[31m", &ansiState{fg: 4, bg: 4, lbg: -1}, "\x1b[31;44m")
 	assert("\x1b[1;2;31m", &ansiState{fg: 2, bg: -1, attr: tui.Reverse, lbg: -1}, "\x1b[1;2;7;31;49m")
 	assert("\x1b[38;5;100;48;5;200m", nil, "\x1b[38;5;100;48;5;200m")
+	assert("\x1b[38:5:100:48:5:200m", nil, "\x1b[38;5;100;48;5;200m")
 	assert("\x1b[48;5;100;38;5;200m", nil, "\x1b[38;5;200;48;5;100m")
 	assert("\x1b[48;5;100;38;2;10;20;30;1m", nil, "\x1b[1;38;2;10;20;30;48;5;100m")
 	assert("\x1b[48;5;100;38;2;10;20;30;7m",
@@ -377,7 +381,7 @@ func TestParseAnsiCode(t *testing.T) {
 		{"-2", "", -1},
 	}
 	for _, x := range tests {
-		n, s := parseAnsiCode(x.In)
+		n, _, s := parseAnsiCode(x.In, 0)
 		if n != x.N || s != x.Exp {
 			t.Fatalf("%q: got: (%d %q) want: (%d %q)", x.In, n, s, x.N, x.Exp)
 		}
@@ -385,9 +389,9 @@ func TestParseAnsiCode(t *testing.T) {
 }
 
 // kernel/bpf/preload/iterators/README
-const ansiBenchmarkString = "\x1b[38;5;81m\x1b[01;31m\x1b[Kkernel/\x1b[0m\x1b[38;5;81mbpf/" +
+const ansiBenchmarkString = "\x1b[38;5;81m\x1b[01;31m\x1b[Kkernel/\x1b[0m\x1b[38:5:81mbpf/" +
-	"\x1b[0m\x1b[38;5;81mpreload/\x1b[0m\x1b[38;5;81miterators/" +
+	"\x1b[0m\x1b[38:5:81mpreload/\x1b[0m\x1b[38;5;81miterators/" +
-	"\x1b[0m\x1b[38;5;149mMakefile\x1b[m\x1b[K\x1b[0m"
+	"\x1b[0m\x1b[38:5:149mMakefile\x1b[m\x1b[K\x1b[0m"
 
 func BenchmarkNextAnsiEscapeSequence(b *testing.B) {
 	b.SetBytes(int64(len(ansiBenchmarkString)))

src/cache.go

@@ -12,8 +12,22 @@ type ChunkCache struct {
 }
 
 // NewChunkCache returns a new ChunkCache
-func NewChunkCache() ChunkCache {
+func NewChunkCache() *ChunkCache {
-	return ChunkCache{sync.Mutex{}, make(map[*Chunk]*queryCache)}
+	return &ChunkCache{sync.Mutex{}, make(map[*Chunk]*queryCache)}
+}
+
+func (cc *ChunkCache) Clear() {
+	cc.mutex.Lock()
+	cc.cache = make(map[*Chunk]*queryCache)
+	cc.mutex.Unlock()
+}
+
+func (cc *ChunkCache) retire(chunk ...*Chunk) {
+	cc.mutex.Lock()
+	for _, c := range chunk {
+		delete(cc.cache, c)
+	}
+	cc.mutex.Unlock()
 }
 
 // Add adds the list to the cache

src/chunklist.go

@@ -16,14 +16,16 @@ type ChunkList struct {
 	chunks []*Chunk
 	mutex  sync.Mutex
 	trans  ItemBuilder
+	cache  *ChunkCache
 }
 
 // NewChunkList returns a new ChunkList
-func NewChunkList(trans ItemBuilder) *ChunkList {
+func NewChunkList(cache *ChunkCache, trans ItemBuilder) *ChunkList {
 	return &ChunkList{
 		chunks: []*Chunk{},
 		mutex:  sync.Mutex{},
-		trans:  trans}
+		trans:  trans,
+		cache:  cache}
 }
 
 func (c *Chunk) push(trans ItemBuilder, data []byte) bool {
@@ -48,7 +50,12 @@ func CountItems(cs []*Chunk) int {
 	if len(cs) == 0 {
 		return 0
 	}
-	return chunkSize*(len(cs)-1) + cs[len(cs)-1].count
+	if len(cs) == 1 {
+		return cs[0].count
+	}
+
+	// First chunk might not be full due to --tail=N
+	return cs[0].count + chunkSize*(len(cs)-2) + cs[len(cs)-1].count
 }
 
 // Push adds the item to the list
@@ -72,18 +79,56 @@ func (cl *ChunkList) Clear() {
 }
 
 // Snapshot returns immutable snapshot of the ChunkList
-func (cl *ChunkList) Snapshot() ([]*Chunk, int) {
+func (cl *ChunkList) Snapshot(tail int) ([]*Chunk, int, bool) {
 	cl.mutex.Lock()
 
+	changed := false
+	if tail > 0 && CountItems(cl.chunks) > tail {
+		changed = true
+		// Find the number of chunks to keep
+		numChunks := 0
+		for left, i := tail, len(cl.chunks)-1; left > 0 && i >= 0; i-- {
+			numChunks++
+			left -= cl.chunks[i].count
+		}
+
+		// Copy the chunks to keep
+		ret := make([]*Chunk, numChunks)
+		minIndex := len(cl.chunks) - numChunks
+		cl.cache.retire(cl.chunks[:minIndex]...)
+		copy(ret, cl.chunks[minIndex:])
+
+		for left, i := tail, len(ret)-1; i >= 0; i-- {
+			chunk := ret[i]
+			if chunk.count > left {
+				newChunk := *chunk
+				newChunk.count = left
+				oldCount := chunk.count
+				for i := 0; i < left; i++ {
+					newChunk.items[i] = chunk.items[oldCount-left+i]
+				}
+				ret[i] = &newChunk
+				cl.cache.retire(chunk)
+				break
+			}
+			left -= chunk.count
+		}
+		cl.chunks = ret
+	}
+
 	ret := make([]*Chunk, len(cl.chunks))
 	copy(ret, cl.chunks)
 
-	// Duplicate the last chunk
+	// Duplicate the first and the last chunk
 	if cnt := len(ret); cnt > 0 {
+		if tail > 0 && cnt > 1 {
+			newChunk := *ret[0]
+			ret[0] = &newChunk
+		}
 		newChunk := *ret[cnt-1]
 		ret[cnt-1] = &newChunk
 	}
 
 	cl.mutex.Unlock()
-	return ret, CountItems(ret)
+	return ret, CountItems(ret), changed
 }

src/chunklist_test.go

@@ -11,13 +11,13 @@ func TestChunkList(t *testing.T) {
 	// FIXME global
 	sortCriteria = []criterion{byScore, byLength}
 
-	cl := NewChunkList(func(item *Item, s []byte) bool {
+	cl := NewChunkList(NewChunkCache(), func(item *Item, s []byte) bool {
 		item.text = util.ToChars(s)
 		return true
 	})
 
 	// Snapshot
-	snapshot, count := cl.Snapshot()
+	snapshot, count, _ := cl.Snapshot(0)
 	if len(snapshot) > 0 || count > 0 {
 		t.Error("Snapshot should be empty now")
 	}
@@ -32,7 +32,7 @@ func TestChunkList(t *testing.T) {
 	}
 
 	// But the new snapshot should contain the added items
-	snapshot, count = cl.Snapshot()
+	snapshot, count, _ = cl.Snapshot(0)
 	if len(snapshot) != 1 && count != 2 {
 		t.Error("Snapshot should not be empty now")
 	}
@@ -61,7 +61,7 @@ func TestChunkList(t *testing.T) {
 	}
 
 	// New snapshot
-	snapshot, count = cl.Snapshot()
+	snapshot, count, _ = cl.Snapshot(0)
 	if len(snapshot) != 3 || !snapshot[0].IsFull() ||
 		!snapshot[1].IsFull() || snapshot[2].IsFull() || count != chunkSize*2+2 {
 		t.Error("Expected two full chunks and one more chunk")
@@ -78,3 +78,39 @@ func TestChunkList(t *testing.T) {
 		t.Error("Unexpected number of items:", lastChunkCount)
 	}
 }
+
+func TestChunkListTail(t *testing.T) {
+	cl := NewChunkList(NewChunkCache(), func(item *Item, s []byte) bool {
+		item.text = util.ToChars(s)
+		return true
+	})
+	total := chunkSize*2 + chunkSize/2
+	for i := 0; i < total; i++ {
+		cl.Push([]byte(fmt.Sprintf("item %d", i)))
+	}
+
+	snapshot, count, changed := cl.Snapshot(0)
+	assertCount := func(expected int, shouldChange bool) {
+		if count != expected || CountItems(snapshot) != expected {
+			t.Errorf("Unexpected count: %d (expected: %d)", count, expected)
+		}
+		if changed != shouldChange {
+			t.Error("Unexpected change status")
+		}
+	}
+	assertCount(total, false)
+
+	tail := chunkSize + chunkSize/2
+	snapshot, count, changed = cl.Snapshot(tail)
+	assertCount(tail, true)
+
+	snapshot, count, changed = cl.Snapshot(tail)
+	assertCount(tail, false)
+
+	snapshot, count, changed = cl.Snapshot(0)
+	assertCount(tail, false)
+
+	tail = chunkSize / 2
+	snapshot, count, changed = cl.Snapshot(tail)
+	assertCount(tail, true)
+}

src/constants.go

@@ -2,7 +2,6 @@ package fzf
 
 import (
 	"math"
-	"os"
 	"time"
 
 	"github.com/junegunn/fzf/src/util"
@@ -15,6 +14,7 @@ const (
 
 	// Reader
 	readerBufferSize       = 64 * 1024
+	readerSlabSize         = 128 * 1024
 	readerPollIntervalMin  = 10 * time.Millisecond
 	readerPollIntervalStep = 5 * time.Millisecond
 	readerPollIntervalMax  = 50 * time.Millisecond
@@ -54,16 +54,6 @@ const (
 	defaultJumpLabels string = "asdfghjklqwertyuiopzxcvbnm1234567890ASDFGHJKLQWERTYUIOPZXCVBNM`~;:,<.>/?'\"!@#$%^&*()[{]}-_=+"
 )
 
-var defaultCommand string
-
-func init() {
-	if !util.IsWindows() {
-		defaultCommand = `set -o pipefail; command find -L . -mindepth 1 \( -path '*/\.*' -o -fstype 'sysfs' -o -fstype 'devfs' -o -fstype 'devtmpfs' -o -fstype 'proc' \) -prune -o -type f -print -o -type l -print 2> /dev/null | cut -b3-`
-	} else if os.Getenv("TERM") == "cygwin" {
-		defaultCommand = `sh -c "command find -L . -mindepth 1 -path '*/\.*' -prune -o -type f -print -o -type l -print 2> /dev/null | cut -b3-"`
-	}
-}
-
 // fzf events
 const (
 	EvtReadNew util.EventType = iota
@@ -77,9 +67,9 @@ const (
 )
 
 const (
-	exitCancel    = -1
+	ExitOk        = 0
-	exitOk        = 0
+	ExitNoMatch   = 1
-	exitNoMatch   = 1
+	ExitError     = 2
-	exitError     = 2
+	ExitBecome    = 126
-	exitInterrupt = 130
+	ExitInterrupt = 130
 )

src/core.go

@@ -1,33 +1,9 @@
-/*
+// Package fzf implements fzf, a command-line fuzzy finder.
-Package fzf implements fzf, a command-line fuzzy finder.
-
-The MIT License (MIT)
-
-Copyright (c) 2013-2021 Junegunn Choi
-
-Permission is hereby granted, free of charge, to any person obtaining a copy
-of this software and associated documentation files (the "Software"), to deal
-in the Software without restriction, including without limitation the rights
-to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-copies of the Software, and to permit persons to whom the Software is
-furnished to do so, subject to the following conditions:
-
-The above copyright notice and this permission notice shall be included in
-all copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
-THE SOFTWARE.
-*/
 package fzf
 
 import (
-	"fmt"
 	"os"
+	"sync"
 	"time"
 
 	"github.com/junegunn/fzf/src/util"
@@ -42,20 +18,52 @@ Matcher  -> EvtSearchFin      -> Terminal (update list)
 Matcher  -> EvtHeader         -> Terminal (update header)
 */
 
+type revision struct {
+	major int
+	minor int
+}
+
+func (r *revision) bumpMajor() {
+	r.major++
+	r.minor = 0
+}
+
+func (r *revision) bumpMinor() {
+	r.minor++
+}
+
+func (r revision) compatible(other revision) bool {
+	return r.major == other.major
+}
+
 // Run starts fzf
-func Run(opts *Options, version string, revision string) {
+func Run(opts *Options) (int, error) {
+	if opts.Filter == nil {
+		if opts.Tmux != nil && len(os.Getenv("TMUX")) > 0 && opts.Tmux.index >= opts.Height.index {
+			return runTmux(os.Args, opts)
+		}
+
+		if needWinpty(opts) {
+			return runWinpty(os.Args, opts)
+		}
+	}
+
+	if err := postProcessOptions(opts); err != nil {
+		return ExitError, err
+	}
+
+	defer util.RunAtExitFuncs()
+
+	// Output channel given
+	if opts.Output != nil {
+		opts.Printer = func(str string) {
+			opts.Output <- str
+		}
+	}
+
 	sort := opts.Sort > 0
 	sortCriteria = opts.Criteria
 
-	if opts.Version {
-		if len(revision) > 0 {
-			fmt.Printf("%s (%s)\n", version, revision)
-		} else {
-			fmt.Println(version)
-		}
-		os.Exit(exitOk)
-	}
-
 	// Event channel
 	eventBox := util.NewEventBox()
 
@@ -69,28 +77,29 @@ func Run(opts *Options, version string, revision string) {
 		if opts.Theme.Colored {
 			ansiProcessor = func(data []byte) (util.Chars, *[]ansiOffset) {
 				prevLineAnsiState = lineAnsiState
-				trimmed, offsets, newState := extractColor(string(data), lineAnsiState, nil)
+				trimmed, offsets, newState := extractColor(byteString(data), lineAnsiState, nil)
 				lineAnsiState = newState
-				return util.ToChars([]byte(trimmed)), offsets
+				return util.ToChars(stringBytes(trimmed)), offsets
 			}
 		} else {
 			// When color is disabled but ansi option is given,
 			// we simply strip out ANSI codes from the input
 			ansiProcessor = func(data []byte) (util.Chars, *[]ansiOffset) {
-				trimmed, _, _ := extractColor(string(data), nil, nil)
+				trimmed, _, _ := extractColor(byteString(data), nil, nil)
-				return util.ToChars([]byte(trimmed)), nil
+				return util.ToChars(stringBytes(trimmed)), nil
 			}
 		}
 	}
 
 	// Chunk list
+	cache := NewChunkCache()
 	var chunkList *ChunkList
 	var itemIndex int32
 	header := make([]string, 0, opts.HeaderLines)
 	if len(opts.WithNth) == 0 {
-		chunkList = NewChunkList(func(item *Item, data []byte) bool {
+		chunkList = NewChunkList(cache, func(item *Item, data []byte) bool {
 			if len(header) < opts.HeaderLines {
-				header = append(header, string(data))
+				header = append(header, byteString(data))
 				eventBox.Set(EvtHeader, header)
 				return false
 			}
@@ -100,8 +109,8 @@ func Run(opts *Options, version string, revision string) {
 			return true
 		})
 	} else {
-		chunkList = NewChunkList(func(item *Item, data []byte) bool {
+		chunkList = NewChunkList(cache, func(item *Item, data []byte) bool {
-			tokens := Tokenize(string(data), opts.Delimiter)
+			tokens := Tokenize(byteString(data), opts.Delimiter)
 			if opts.Ansi && opts.Theme.Colored && len(tokens) > 1 {
 				var ansiState *ansiState
 				if prevLineAnsiState != nil {
@@ -125,7 +134,7 @@ func Run(opts *Options, version string, revision string) {
 				eventBox.Set(EvtHeader, header)
 				return false
 			}
-			item.text, item.colors = ansiProcessor([]byte(transformed))
+			item.text, item.colors = ansiProcessor(stringBytes(transformed))
 			item.text.TrimTrailingWhitespaces()
 			item.text.Index = itemIndex
 			item.origText = &data
@@ -134,33 +143,60 @@ func Run(opts *Options, version string, revision string) {
 		})
 	}
 
+	// Process executor
+	executor := util.NewExecutor(opts.WithShell)
+
+	// Terminal I/O
+	var terminal *Terminal
+	var err error
+	var initialEnv []string
+	initialReload := opts.extractReloadOnStart()
+	if opts.Filter == nil {
+		terminal, err = NewTerminal(opts, eventBox, executor)
+		if err != nil {
+			return ExitError, err
+		}
+		if len(initialReload) > 0 {
+			var temps []string
+			initialReload, temps = terminal.replacePlaceholderInInitialCommand(initialReload)
+			initialEnv = terminal.environ()
+			defer removeFiles(temps)
+		}
+	}
+
 	// Reader
 	streamingFilter := opts.Filter != nil && !sort && !opts.Tac && !opts.Sync
 	var reader *Reader
 	if !streamingFilter {
 		reader = NewReader(func(data []byte) bool {
 			return chunkList.Push(data)
-		}, eventBox, opts.ReadZero, opts.Filter == nil)
+		}, eventBox, executor, opts.ReadZero, opts.Filter == nil)
-		go reader.ReadSource()
+
+		go reader.ReadSource(opts.Input, opts.WalkerRoot, opts.WalkerOpts, opts.WalkerSkip, initialReload, initialEnv)
 	}
 
 	// Matcher
 	forward := true
-	for _, cri := range opts.Criteria[1:] {
+	withPos := false
-		if cri == byEnd {
+	for idx := len(opts.Criteria) - 1; idx > 0; idx-- {
+		switch opts.Criteria[idx] {
+		case byChunk:
+			withPos = true
+		case byEnd:
 			forward = false
-			break
+		case byBegin:
-		}
+			forward = true
-		if cri == byBegin {
-			break
 		}
 	}
+	patternCache := make(map[string]*Pattern)
 	patternBuilder := func(runes []rune) *Pattern {
-		return BuildPattern(
+		return BuildPattern(cache, patternCache,
-			opts.Fuzzy, opts.FuzzyAlgo, opts.Extended, opts.Case, opts.Normalize, forward,
+			opts.Fuzzy, opts.FuzzyAlgo, opts.Extended, opts.Case, opts.Normalize, forward, withPos,
 			opts.Filter == nil, opts.Nth, opts.Delimiter, runes)
 	}
-	matcher := NewMatcher(patternBuilder, sort, opts.Tac, eventBox)
+	inputRevision := revision{}
+	snapshotRevision := revision{}
+	matcher := NewMatcher(cache, patternBuilder, sort, opts.Tac, eventBox, inputRevision)
 
 	// Filtering mode
 	if opts.Filter != nil {
@@ -174,23 +210,27 @@ func Run(opts *Options, version string, revision string) {
 		found := false
 		if streamingFilter {
 			slab := util.MakeSlab(slab16Size, slab32Size)
+			mutex := sync.Mutex{}
 			reader := NewReader(
 				func(runes []byte) bool {
 					item := Item{}
 					if chunkList.trans(&item, runes) {
+						mutex.Lock()
 						if result, _, _ := pattern.MatchItem(&item, false, slab); result != nil {
 							opts.Printer(item.text.ToString())
 							found = true
 						}
+						mutex.Unlock()
 					}
 					return false
-				}, eventBox, opts.ReadZero, false)
+				}, eventBox, executor, opts.ReadZero, false)
-			reader.ReadSource()
+			reader.ReadSource(opts.Input, opts.WalkerRoot, opts.WalkerOpts, opts.WalkerSkip, initialReload, initialEnv)
 		} else {
 			eventBox.Unwatch(EvtReadNew)
 			eventBox.WaitFor(EvtReadFin)
 
-			snapshot, _ := chunkList.Snapshot()
+			// NOTE: Streaming filter is inherently not compatible with --tail
+			snapshot, _, _ := chunkList.Snapshot(opts.Tail)
 			merger, _ := matcher.scan(MatchRequest{
 				chunks:  snapshot,
 				pattern: pattern})
@@ -200,9 +240,9 @@ func Run(opts *Options, version string, revision string) {
 			}
 		}
 		if found {
-			os.Exit(exitOk)
+			return ExitOk, nil
 		}
-		os.Exit(exitNoMatch)
+		return ExitNoMatch, nil
 	}
 
 	// Synchronous search
@@ -213,40 +253,63 @@ func Run(opts *Options, version string, revision string) {
 
 	// Go interactive
 	go matcher.Loop()
+	defer matcher.Stop()
 
-	// Terminal I/O
+	// Handling adaptive height
-	terminal := NewTerminal(opts, eventBox)
+	maxFit := 0 // Maximum number of items that can fit on screen
-	deferred := opts.Select1 || opts.Exit0
+	padHeight := 0
+	heightUnknown := opts.Height.auto
+	if heightUnknown {
+		maxFit, padHeight = terminal.MaxFitAndPad()
+	}
+	deferred := opts.Select1 || opts.Exit0 || opts.Sync
 	go terminal.Loop()
-	if !deferred {
+	if !deferred && !heightUnknown {
-		terminal.startChan <- true
+		// Start right away
+		terminal.startChan <- fitpad{-1, -1}
 	}
 
 	// Event coordination
 	reading := true
-	clearCache := util.Once(false)
-	clearSelection := util.Once(false)
 	ticks := 0
-	var nextCommand *string
+	var nextCommand *commandSpec
-	restart := func(command string) {
+	var nextEnviron []string
+	eventBox.Watch(EvtReadNew)
+	total := 0
+	query := []rune{}
+	determine := func(final bool) {
+		if heightUnknown {
+			if total >= maxFit || final {
+				deferred = false
+				heightUnknown = false
+				terminal.startChan <- fitpad{util.Min(total, maxFit), padHeight}
+			}
+		} else if deferred {
+			deferred = false
+			terminal.startChan <- fitpad{-1, -1}
+		}
+	}
+
+	useSnapshot := false
+	var snapshot []*Chunk
+	var count int
+	restart := func(command commandSpec, environ []string) {
 		reading = true
-		clearCache = util.Once(true)
-		clearSelection = util.Once(true)
 		chunkList.Clear()
 		itemIndex = 0
+		inputRevision.bumpMajor()
 		header = make([]string, 0, opts.HeaderLines)
-		go reader.restart(command)
+		go reader.restart(command, environ)
 	}
-	eventBox.Watch(EvtReadNew)
+
-	query := []rune{}
+	exitCode := ExitOk
+	stop := false
 	for {
 		delay := true
 		ticks++
-		input := func(reloaded bool) []rune {
+		input := func() []rune {
 			paused, input := terminal.Input()
-			if reloaded && paused {
+			if !paused {
-				query = []rune{}
-			} else if !paused {
 				query = input
 			}
 			return query
@@ -261,43 +324,83 @@ func Run(opts *Options, version string, revision string) {
 					if reading {
 						reader.terminate()
 					}
-					os.Exit(value.(int))
+					quitSignal := value.(quitSignal)
+					exitCode = quitSignal.code
+					err = quitSignal.err
+					stop = true
+					return
 				case EvtReadNew, EvtReadFin:
 					if evt == EvtReadFin && nextCommand != nil {
-						restart(*nextCommand)
+						restart(*nextCommand, nextEnviron)
 						nextCommand = nil
+						nextEnviron = nil
 						break
 					} else {
 						reading = reading && evt == EvtReadNew
 					}
-					snapshot, count := chunkList.Snapshot()
+					if useSnapshot && evt == EvtReadFin {
-					terminal.UpdateCount(count, !reading, value.(*string))
+						useSnapshot = false
-					if opts.Sync {
-						opts.Sync = false
-						terminal.UpdateList(PassMerger(&snapshot, opts.Tac), false)
 					}
-					reset := clearCache()
+					if !useSnapshot {
-					matcher.Reset(snapshot, input(reset), false, !reading, sort, reset)
+						if !snapshotRevision.compatible(inputRevision) {
+							query = []rune{}
+						}
+						var changed bool
+						snapshot, count, changed = chunkList.Snapshot(opts.Tail)
+						if changed {
+							inputRevision.bumpMinor()
+						}
+						snapshotRevision = inputRevision
+					}
+					total = count
+					terminal.UpdateCount(total, !reading, value.(*string))
+					if heightUnknown && !deferred {
+						determine(!reading)
+					}
+					matcher.Reset(snapshot, input(), false, !reading, sort, snapshotRevision)
 
 				case EvtSearchNew:
-					var command *string
+					var command *commandSpec
+					var environ []string
+					var changed bool
 					switch val := value.(type) {
 					case searchRequest:
 						sort = val.sort
 						command = val.command
+						environ = val.environ
+						changed = val.changed
+						if command != nil {
+							useSnapshot = val.sync
+						}
 					}
 					if command != nil {
 						if reading {
 							reader.terminate()
 							nextCommand = command
+							nextEnviron = environ
 						} else {
-							restart(*command)
+							restart(*command, environ)
 						}
+					}
+					if !changed {
 						break
 					}
-					snapshot, _ := chunkList.Snapshot()
+					if !useSnapshot {
-					reset := clearCache()
+						newSnapshot, newCount, changed := chunkList.Snapshot(opts.Tail)
-					matcher.Reset(snapshot, input(reset), true, !reading, sort, reset)
+						if changed {
+							inputRevision.bumpMinor()
+						}
+						// We want to avoid showing empty list when reload is triggered
+						// and the query string is changed at the same time i.e. command != nil && changed
+						if command == nil || newCount > 0 {
+							if snapshotRevision != inputRevision {
+								query = []rune{}
+							}
+							snapshot = newSnapshot
+							snapshotRevision = inputRevision
+						}
+					}
+					matcher.Reset(snapshot, input(), true, !reading, sort, snapshotRevision)
 					delay = false
 
 				case EvtSearchProgress:
@@ -317,8 +420,7 @@ func Run(opts *Options, version string, revision string) {
 						if deferred {
 							count := val.Length()
 							if opts.Select1 && count > 1 || opts.Exit0 && !opts.Select1 && count > 0 {
-								deferred = false
+								determine(val.final)
-								terminal.startChan <- true
 							} else if val.final {
 								if opts.Exit0 && count == 0 || opts.Select1 && count == 1 {
 									if opts.PrintQuery {
@@ -330,21 +432,24 @@ func Run(opts *Options, version string, revision string) {
 									for i := 0; i < count; i++ {
 										opts.Printer(val.Get(i).item.AsString(opts.Ansi))
 									}
-									if count > 0 {
+									if count == 0 {
-										os.Exit(exitOk)
+										exitCode = ExitNoMatch
 									}
-									os.Exit(exitNoMatch)
+									stop = true
+									return
 								}
-								deferred = false
+								determine(val.final)
-								terminal.startChan <- true
 							}
 						}
-						terminal.UpdateList(val, clearSelection())
+						terminal.UpdateList(val)
 					}
 				}
 			}
 			events.Clear()
 		})
+		if stop {
+			break
+		}
 		if delay && reading {
 			dur := util.DurWithin(
 				time.Duration(ticks)*coordinatorDelayStep,
@@ -352,4 +457,5 @@ func Run(opts *Options, version string, revision string) {
 			time.Sleep(dur)
 		}
 	}
+	return exitCode, err
 }

src/functions.go

@@ -0,0 +1,35 @@
+package fzf
+
+import (
+	"os"
+	"strings"
+	"unsafe"
+)
+
+func WriteTemporaryFile(data []string, printSep string) string {
+	f, err := os.CreateTemp("", "fzf-temp-*")
+	if err != nil {
+		// Unable to create temporary file
+		// FIXME: Should we terminate the program?
+		return ""
+	}
+	defer f.Close()
+
+	f.WriteString(strings.Join(data, printSep))
+	f.WriteString(printSep)
+	return f.Name()
+}
+
+func removeFiles(files []string) {
+	for _, filename := range files {
+		os.Remove(filename)
+	}
+}
+
+func stringBytes(data string) []byte {
+	return unsafe.Slice(unsafe.StringData(data), len(data))
+}
+
+func byteString(data []byte) string {
+	return unsafe.String(unsafe.SliceData(data), len(data))
+}

src/history.go

@@ -2,7 +2,6 @@ package fzf
 
 import (
 	"errors"
-	"io/ioutil"
 	"os"
 	"strings"
 )
@@ -26,12 +25,12 @@ func NewHistory(path string, maxSize int) (*History, error) {
 	}
 
 	// Read history file
-	data, err := ioutil.ReadFile(path)
+	data, err := os.ReadFile(path)
 	if err != nil {
 		// If it doesn't exist, check if we can create a file with the name
 		if os.IsNotExist(err) {
 			data = []byte{}
-			if err := ioutil.WriteFile(path, data, 0600); err != nil {
+			if err := os.WriteFile(path, data, 0600); err != nil {
 				return nil, fmtError(err)
 			}
 		} else {
@@ -62,11 +61,11 @@ func (h *History) append(line string) error {
 		lines = lines[len(lines)-h.maxSize:]
 	}
 	h.lines = append(lines, "")
-	return ioutil.WriteFile(h.path, []byte(strings.Join(h.lines, "\n")), 0600)
+	return os.WriteFile(h.path, []byte(strings.Join(h.lines, "\n")), 0600)
 }
 
 func (h *History) override(str string) {
-	// You can update the history but they're not written to the file
+	// You can update the history, but they're not written to the file
 	if h.cursor == len(h.lines)-1 {
 		h.lines[h.cursor] = str
 	} else if h.cursor < len(h.lines)-1 {

src/history_test.go

@@ -1,7 +1,6 @@
 package fzf
 
 import (
-	"io/ioutil"
 	"os"
 	"runtime"
 	"testing"
@@ -25,7 +24,7 @@ func TestHistory(t *testing.T) {
 		}
 	}
 
-	f, _ := ioutil.TempFile("", "fzf-history")
+	f, _ := os.CreateTemp("", "fzf-history")
 	f.Close()
 
 	{ // Append lines

src/item.go

@@ -1,6 +1,8 @@
 package fzf
 
 import (
+	"math"
+
 	"github.com/junegunn/fzf/src/util"
 )
 
@@ -17,7 +19,7 @@ func (item *Item) Index() int32 {
 	return item.text.Index
 }
 
-var minItem = Item{text: util.Chars{Index: -1}}
+var minItem = Item{text: util.Chars{Index: math.MinInt32}}
 
 func (item *Item) TrimLength() uint16 {
 	return item.text.TrimLength()

src/matcher.go

@@ -12,15 +12,16 @@ import (
 
 // MatchRequest represents a search request
 type MatchRequest struct {
-	chunks     []*Chunk
+	chunks   []*Chunk
-	pattern    *Pattern
+	pattern  *Pattern
-	final      bool
+	final    bool
-	sort       bool
+	sort     bool
-	clearCache bool
+	revision revision
 }
 
 // Matcher is responsible for performing search
 type Matcher struct {
+	cache          *ChunkCache
 	patternBuilder func([]rune) *Pattern
 	sort           bool
 	tac            bool
@@ -29,6 +30,7 @@ type Matcher struct {
 	partitions     int
 	slab           []*util.Slab
 	mergerCache    map[string]*Merger
+	revision       revision
 }
 
 const (
@@ -37,10 +39,11 @@ const (
 )
 
 // NewMatcher returns a new Matcher
-func NewMatcher(patternBuilder func([]rune) *Pattern,
+func NewMatcher(cache *ChunkCache, patternBuilder func([]rune) *Pattern,
-	sort bool, tac bool, eventBox *util.EventBox) *Matcher {
+	sort bool, tac bool, eventBox *util.EventBox, revision revision) *Matcher {
 	partitions := util.Min(numPartitionsMultiplier*runtime.NumCPU(), maxPartitions)
 	return &Matcher{
+		cache:          cache,
 		patternBuilder: patternBuilder,
 		sort:           sort,
 		tac:            tac,
@@ -48,7 +51,8 @@ func NewMatcher(patternBuilder func([]rune) *Pattern,
 		reqBox:         util.NewEventBox(),
 		partitions:     partitions,
 		slab:           make([]*util.Slab, partitions),
-		mergerCache:    make(map[string]*Merger)}
+		mergerCache:    make(map[string]*Merger),
+		revision:       revision}
 }
 
 // Loop puts Matcher in action
@@ -58,8 +62,13 @@ func (m *Matcher) Loop() {
 	for {
 		var request MatchRequest
 
+		stop := false
 		m.reqBox.Wait(func(events *util.Events) {
-			for _, val := range *events {
+			for t, val := range *events {
+				if t == reqQuit {
+					stop = true
+					return
+				}
 				switch val := val.(type) {
 				case MatchRequest:
 					request = val
@@ -69,11 +78,19 @@ func (m *Matcher) Loop() {
 			}
 			events.Clear()
 		})
+		if stop {
+			break
+		}
 
-		if request.sort != m.sort || request.clearCache {
+		cacheCleared := false
+		if request.sort != m.sort || request.revision != m.revision {
 			m.sort = request.sort
+			m.revision = request.revision
 			m.mergerCache = make(map[string]*Merger)
-			clearChunkCache()
+			if !request.revision.compatible(m.revision) {
+				m.cache.Clear()
+			}
+			cacheCleared = true
 		}
 
 		// Restart search
@@ -82,20 +99,20 @@ func (m *Matcher) Loop() {
 		cancelled := false
 		count := CountItems(request.chunks)
 
-		foundCache := false
+		if !cacheCleared {
-		if count == prevCount {
+			if count == prevCount {
-			// Look up mergerCache
+				// Look up mergerCache
-			if cached, found := m.mergerCache[patternString]; found {
+				if cached, found := m.mergerCache[patternString]; found {
-				foundCache = true
+					merger = cached
-				merger = cached
+				}
+			} else {
+				// Invalidate mergerCache
+				prevCount = count
+				m.mergerCache = make(map[string]*Merger)
 			}
-		} else {
-			// Invalidate mergerCache
-			prevCount = count
-			m.mergerCache = make(map[string]*Merger)
 		}
 
-		if !foundCache {
+		if merger == nil {
 			merger, cancelled = m.scan(request)
 		}
 
@@ -140,13 +157,14 @@ func (m *Matcher) scan(request MatchRequest) (*Merger, bool) {
 
 	numChunks := len(request.chunks)
 	if numChunks == 0 {
-		return EmptyMerger, false
+		return EmptyMerger(request.revision), false
 	}
 	pattern := request.pattern
 	if pattern.IsEmpty() {
-		return PassMerger(&request.chunks, m.tac), false
+		return PassMerger(&request.chunks, m.tac, request.revision), false
 	}
 
+	minIndex := request.chunks[0].items[0].Index()
 	cancelled := util.NewAtomicBool(false)
 
 	slices := m.sliceChunks(request.chunks)
@@ -177,7 +195,7 @@ func (m *Matcher) scan(request MatchRequest) (*Merger, bool) {
 			for _, matches := range allMatches {
 				sliceMatches = append(sliceMatches, matches...)
 			}
-			if m.sort {
+			if m.sort && request.pattern.sortable {
 				if m.tac {
 					sort.Sort(ByRelevanceTac(sliceMatches))
 				} else {
@@ -218,11 +236,11 @@ func (m *Matcher) scan(request MatchRequest) (*Merger, bool) {
 		partialResult := <-resultChan
 		partialResults[partialResult.index] = partialResult.matches
 	}
-	return NewMerger(pattern, partialResults, m.sort, m.tac), false
+	return NewMerger(pattern, partialResults, m.sort && request.pattern.sortable, m.tac, request.revision, minIndex), false
 }
 
 // Reset is called to interrupt/signal the ongoing search
-func (m *Matcher) Reset(chunks []*Chunk, patternRunes []rune, cancel bool, final bool, sort bool, clearCache bool) {
+func (m *Matcher) Reset(chunks []*Chunk, patternRunes []rune, cancel bool, final bool, sort bool, revision revision) {
 	pattern := m.patternBuilder(patternRunes)
 
 	var event util.EventType
@@ -231,5 +249,9 @@ func (m *Matcher) Reset(chunks []*Chunk, patternRunes []rune, cancel bool, final
 	} else {
 		event = reqRetry
 	}
-	m.reqBox.Set(event, MatchRequest{chunks, pattern, final, sort && pattern.sortable, clearCache})
+	m.reqBox.Set(event, MatchRequest{chunks, pattern, final, sort, revision})
+}
+
+func (m *Matcher) Stop() {
+	m.reqBox.Set(reqQuit, nil)
 }

src/merger.go

@@ -3,30 +3,42 @@ package fzf
 import "fmt"
 
 // EmptyMerger is a Merger with no data
-var EmptyMerger = NewMerger(nil, [][]Result{}, false, false)
+func EmptyMerger(revision revision) *Merger {
+	return NewMerger(nil, [][]Result{}, false, false, revision, 0)
+}
 
 // Merger holds a set of locally sorted lists of items and provides the view of
 // a single, globally-sorted list
 type Merger struct {
-	pattern *Pattern
+	pattern  *Pattern
-	lists   [][]Result
+	lists    [][]Result
-	merged  []Result
+	merged   []Result
-	chunks  *[]*Chunk
+	chunks   *[]*Chunk
-	cursors []int
+	cursors  []int
-	sorted  bool
+	sorted   bool
-	tac     bool
+	tac      bool
-	final   bool
+	final    bool
-	count   int
+	count    int
+	pass     bool
+	revision revision
+	minIndex int32
 }
 
 // PassMerger returns a new Merger that simply returns the items in the
 // original order
-func PassMerger(chunks *[]*Chunk, tac bool) *Merger {
+func PassMerger(chunks *[]*Chunk, tac bool, revision revision) *Merger {
+	var minIndex int32
+	if len(*chunks) > 0 {
+		minIndex = (*chunks)[0].items[0].Index()
+	}
 	mg := Merger{
-		pattern: nil,
+		pattern:  nil,
-		chunks:  chunks,
+		chunks:   chunks,
-		tac:     tac,
+		tac:      tac,
-		count:   0}
+		count:    0,
+		pass:     true,
+		revision: revision,
+		minIndex: minIndex}
 
 	for _, chunk := range *mg.chunks {
 		mg.count += chunk.count
@@ -35,17 +47,19 @@ func PassMerger(chunks *[]*Chunk, tac bool) *Merger {
 }
 
 // NewMerger returns a new Merger
-func NewMerger(pattern *Pattern, lists [][]Result, sorted bool, tac bool) *Merger {
+func NewMerger(pattern *Pattern, lists [][]Result, sorted bool, tac bool, revision revision, minIndex int32) *Merger {
 	mg := Merger{
-		pattern: pattern,
+		pattern:  pattern,
-		lists:   lists,
+		lists:    lists,
-		merged:  []Result{},
+		merged:   []Result{},
-		chunks:  nil,
+		chunks:   nil,
-		cursors: make([]int, len(lists)),
+		cursors:  make([]int, len(lists)),
-		sorted:  sorted,
+		sorted:   sorted,
-		tac:     tac,
+		tac:      tac,
-		final:   false,
+		final:    false,
-		count:   0}
+		count:    0,
+		revision: revision,
+		minIndex: minIndex}
 
 	for _, list := range mg.lists {
 		mg.count += len(list)
@@ -53,17 +67,55 @@ func NewMerger(pattern *Pattern, lists [][]Result, sorted bool, tac bool) *Merge
 	return &mg
 }
 
+// Revision returns revision number
+func (mg *Merger) Revision() revision {
+	return mg.revision
+}
+
 // Length returns the number of items
 func (mg *Merger) Length() int {
 	return mg.count
 }
 
+func (mg *Merger) First() Result {
+	if mg.tac && !mg.sorted {
+		return mg.Get(mg.count - 1)
+	}
+	return mg.Get(0)
+}
+
+// FindIndex returns the index of the item with the given item index
+func (mg *Merger) FindIndex(itemIndex int32) int {
+	index := -1
+	if mg.pass {
+		index = int(itemIndex - mg.minIndex)
+		if mg.tac {
+			index = mg.count - index - 1
+		}
+	} else {
+		for i := 0; i < mg.count; i++ {
+			if mg.Get(i).item.Index() == itemIndex {
+				index = i
+				break
+			}
+		}
+	}
+	return index
+}
+
 // Get returns the pointer to the Result object indexed by the given integer
 func (mg *Merger) Get(idx int) Result {
 	if mg.chunks != nil {
 		if mg.tac {
 			idx = mg.count - idx - 1
 		}
+		firstChunk := (*mg.chunks)[0]
+		if firstChunk.count < chunkSize && idx >= firstChunk.count {
+			idx -= firstChunk.count
+
+			chunk := (*mg.chunks)[idx/chunkSize+1]
+			return Result{item: &chunk.items[idx%chunkSize]}
+		}
 		chunk := (*mg.chunks)[idx/chunkSize]
 		return Result{item: &chunk.items[idx%chunkSize]}
 	}

src/merger_test.go

@@ -23,10 +23,11 @@ func randResult() Result {
 }
 
 func TestEmptyMerger(t *testing.T) {
-	assert(t, EmptyMerger.Length() == 0, "Not empty")
+	r := revision{}
-	assert(t, EmptyMerger.count == 0, "Invalid count")
+	assert(t, EmptyMerger(r).Length() == 0, "Not empty")
-	assert(t, len(EmptyMerger.lists) == 0, "Invalid lists")
+	assert(t, EmptyMerger(r).count == 0, "Invalid count")
-	assert(t, len(EmptyMerger.merged) == 0, "Invalid merged list")
+	assert(t, len(EmptyMerger(r).lists) == 0, "Invalid lists")
+	assert(t, len(EmptyMerger(r).merged) == 0, "Invalid merged list")
 }
 
 func buildLists(partiallySorted bool) ([][]Result, []Result) {
@@ -57,7 +58,7 @@ func TestMergerUnsorted(t *testing.T) {
 	cnt := len(items)
 
 	// Not sorted: same order
-	mg := NewMerger(nil, lists, false, false)
+	mg := NewMerger(nil, lists, false, false, revision{}, 0)
 	assert(t, cnt == mg.Length(), "Invalid Length")
 	for i := 0; i < cnt; i++ {
 		assert(t, items[i] == mg.Get(i), "Invalid Get")
@@ -69,7 +70,7 @@ func TestMergerSorted(t *testing.T) {
 	cnt := len(items)
 
 	// Sorted sorted order
-	mg := NewMerger(nil, lists, true, false)
+	mg := NewMerger(nil, lists, true, false, revision{}, 0)
 	assert(t, cnt == mg.Length(), "Invalid Length")
 	sort.Sort(ByRelevance(items))
 	for i := 0; i < cnt; i++ {
@@ -79,7 +80,7 @@ func TestMergerSorted(t *testing.T) {
 	}
 
 	// Inverse order
-	mg2 := NewMerger(nil, lists, true, false)
+	mg2 := NewMerger(nil, lists, true, false, revision{}, 0)
 	for i := cnt - 1; i >= 0; i-- {
 		if items[i] != mg2.Get(i) {
 			t.Error("Not sorted", items[i], mg2.Get(i))

src/options_no_pprof.go

@@ -0,0 +1,13 @@
+//go:build !pprof
+// +build !pprof
+
+package fzf
+
+import "errors"
+
+func (o *Options) initProfiling() error {
+	if o.CPUProfile != "" || o.MEMProfile != "" || o.BlockProfile != "" || o.MutexProfile != "" {
+		return errors.New("error: profiling not supported: FZF must be built with '-tags=pprof' to enable profiling")
+	}
+	return nil
+}

src/options_pprof.go

@@ -0,0 +1,73 @@
+//go:build pprof
+// +build pprof
+
+package fzf
+
+import (
+	"fmt"
+	"os"
+	"runtime"
+	"runtime/pprof"
+
+	"github.com/junegunn/fzf/src/util"
+)
+
+func (o *Options) initProfiling() error {
+	if o.CPUProfile != "" {
+		f, err := os.Create(o.CPUProfile)
+		if err != nil {
+			return fmt.Errorf("could not create CPU profile: %w", err)
+		}
+
+		if err := pprof.StartCPUProfile(f); err != nil {
+			return fmt.Errorf("could not start CPU profile: %w", err)
+		}
+
+		util.AtExit(func() {
+			pprof.StopCPUProfile()
+			if err := f.Close(); err != nil {
+				fmt.Fprintln(os.Stderr, "Error: closing cpu profile:", err)
+			}
+		})
+	}
+
+	stopProfile := func(name string, f *os.File) {
+		if err := pprof.Lookup(name).WriteTo(f, 0); err != nil {
+			fmt.Fprintf(os.Stderr, "Error: could not write %s profile: %v\n", name, err)
+		}
+		if err := f.Close(); err != nil {
+			fmt.Fprintf(os.Stderr, "Error: closing %s profile: %v\n", name, err)
+		}
+	}
+
+	if o.MEMProfile != "" {
+		f, err := os.Create(o.MEMProfile)
+		if err != nil {
+			return fmt.Errorf("could not create MEM profile: %w", err)
+		}
+		util.AtExit(func() {
+			runtime.GC()
+			stopProfile("allocs", f)
+		})
+	}
+
+	if o.BlockProfile != "" {
+		runtime.SetBlockProfileRate(1)
+		f, err := os.Create(o.BlockProfile)
+		if err != nil {
+			return fmt.Errorf("could not create BLOCK profile: %w", err)
+		}
+		util.AtExit(func() { stopProfile("block", f) })
+	}
+
+	if o.MutexProfile != "" {
+		runtime.SetMutexProfileFraction(1)
+		f, err := os.Create(o.MutexProfile)
+		if err != nil {
+			return fmt.Errorf("could not create MUTEX profile: %w", err)
+		}
+		util.AtExit(func() { stopProfile("mutex", f) })
+	}
+
+	return nil
+}

src/options_pprof_test.go

@@ -0,0 +1,89 @@
+//go:build pprof
+// +build pprof
+
+package fzf
+
+import (
+	"bytes"
+	"flag"
+	"os"
+	"os/exec"
+	"path/filepath"
+	"testing"
+
+	"github.com/junegunn/fzf/src/util"
+)
+
+// runInitProfileTests is an internal flag used TestInitProfiling
+var runInitProfileTests = flag.Bool("test-init-profile", false, "run init profile tests")
+
+func TestInitProfiling(t *testing.T) {
+	if testing.Short() {
+		t.Skip("short test")
+	}
+
+	// Run this test in a separate process since it interferes with
+	// profiling and modifies the global atexit state. Without this
+	// running `go test -bench . -cpuprofile cpu.out` will fail.
+	if !*runInitProfileTests {
+		t.Parallel()
+
+		// Make sure we are not the child process.
+		if os.Getenv("_FZF_CHILD_PROC") != "" {
+			t.Fatal("already running as child process!")
+		}
+
+		cmd := exec.Command(os.Args[0],
+			"-test.timeout", "30s",
+			"-test.run", "^"+t.Name()+"$",
+			"-test-init-profile",
+		)
+		cmd.Env = append(os.Environ(), "_FZF_CHILD_PROC=1")
+
+		out, err := cmd.CombinedOutput()
+		out = bytes.TrimSpace(out)
+		if err != nil {
+			t.Fatalf("Child test process failed: %v:\n%s", err, out)
+		}
+		// Make sure the test actually ran
+		if bytes.Contains(out, []byte("no tests to run")) {
+			t.Fatalf("Failed to run test %q:\n%s", t.Name(), out)
+		}
+		return
+	}
+
+	// Child process
+
+	tempdir := t.TempDir()
+	t.Cleanup(util.RunAtExitFuncs)
+
+	o := Options{
+		CPUProfile:   filepath.Join(tempdir, "cpu.prof"),
+		MEMProfile:   filepath.Join(tempdir, "mem.prof"),
+		BlockProfile: filepath.Join(tempdir, "block.prof"),
+		MutexProfile: filepath.Join(tempdir, "mutex.prof"),
+	}
+	if err := o.initProfiling(); err != nil {
+		t.Fatal(err)
+	}
+
+	profiles := []string{
+		o.CPUProfile,
+		o.MEMProfile,
+		o.BlockProfile,
+		o.MutexProfile,
+	}
+	for _, name := range profiles {
+		if _, err := os.Stat(name); err != nil {
+			t.Errorf("Failed to create profile %s: %v", filepath.Base(name), err)
+		}
+	}
+
+	util.RunAtExitFuncs()
+
+	for _, name := range profiles {
+		if _, err := os.Stat(name); err != nil {
+			t.Errorf("Failed to write profile %s: %v", filepath.Base(name), err)
+		}
+	}
+}

src/options_test.go

@@ -2,7 +2,7 @@ package fzf
 
 import (
 	"fmt"
-	"io/ioutil"
+	"os"
 	"testing"
 
 	"github.com/junegunn/fzf/src/tui"
@@ -80,7 +80,7 @@ func TestDelimiterRegexRegexCaret(t *testing.T) {
 
 func TestSplitNth(t *testing.T) {
 	{
-		ranges := splitNth("..")
+		ranges, _ := splitNth("..")
 		if len(ranges) != 1 ||
 			ranges[0].begin != rangeEllipsis ||
 			ranges[0].end != rangeEllipsis {
@@ -88,7 +88,7 @@ func TestSplitNth(t *testing.T) {
 		}
 	}
 	{
-		ranges := splitNth("..3,1..,2..3,4..-1,-3..-2,..,2,-2,2..-2,1..-1")
+		ranges, _ := splitNth("..3,1..,2..3,4..-1,-3..-2,..,2,-2,2..-2,1..-1")
 		if len(ranges) != 10 ||
 			ranges[0].begin != rangeEllipsis || ranges[0].end != 3 ||
 			ranges[1].begin != rangeEllipsis || ranges[1].end != rangeEllipsis ||
@@ -106,10 +106,11 @@ func TestSplitNth(t *testing.T) {
 }
 
 func TestIrrelevantNth(t *testing.T) {
+	index := 0
 	{
 		opts := defaultOptions()
 		words := []string{"--nth", "..", "-x"}
-		parseOptions(opts, words)
+		parseOptions(&index, opts, words)
 		postProcessOptions(opts)
 		if len(opts.Nth) != 0 {
 			t.Errorf("nth should be empty: %v", opts.Nth)
@@ -118,7 +119,7 @@ func TestIrrelevantNth(t *testing.T) {
 	for _, words := range [][]string{{"--nth", "..,3", "+x"}, {"--nth", "3,1..", "+x"}, {"--nth", "..-1,1", "+x"}} {
 		{
 			opts := defaultOptions()
-			parseOptions(opts, words)
+			parseOptions(&index, opts, words)
 			postProcessOptions(opts)
 			if len(opts.Nth) != 0 {
 				t.Errorf("nth should be empty: %v", opts.Nth)
@@ -127,7 +128,7 @@ func TestIrrelevantNth(t *testing.T) {
 		{
 			opts := defaultOptions()
 			words = append(words, "-x")
-			parseOptions(opts, words)
+			parseOptions(&index, opts, words)
 			postProcessOptions(opts)
 			if len(opts.Nth) != 2 {
 				t.Errorf("nth should not be empty: %v", opts.Nth)
@@ -137,7 +138,7 @@ func TestIrrelevantNth(t *testing.T) {
 }
 
 func TestParseKeys(t *testing.T) {
-	pairs := parseKeyChords("ctrl-z,alt-z,f2,@,Alt-a,!,ctrl-G,J,g,ctrl-alt-a,ALT-enter,alt-SPACE", "")
+	pairs, _ := parseKeyChords("ctrl-z,alt-z,f2,@,Alt-a,!,ctrl-G,J,g,ctrl-alt-a,ALT-enter,alt-SPACE", "")
 	checkEvent := func(e tui.Event, s string) {
 		if pairs[e] != s {
 			t.Errorf("%s != %s", pairs[e], s)
@@ -163,35 +164,35 @@ func TestParseKeys(t *testing.T) {
 	checkEvent(tui.AltKey(' '), "alt-SPACE")
 
 	// Synonyms
-	pairs = parseKeyChords("enter,Return,space,tab,btab,esc,up,down,left,right", "")
+	pairs, _ = parseKeyChords("enter,Return,space,tab,btab,esc,up,down,left,right", "")
 	if len(pairs) != 9 {
 		t.Error(9)
 	}
 	check(tui.CtrlM, "Return")
 	checkEvent(tui.Key(' '), "space")
 	check(tui.Tab, "tab")
-	check(tui.BTab, "btab")
+	check(tui.ShiftTab, "btab")
-	check(tui.ESC, "esc")
+	check(tui.Esc, "esc")
 	check(tui.Up, "up")
 	check(tui.Down, "down")
 	check(tui.Left, "left")
 	check(tui.Right, "right")
 
-	pairs = parseKeyChords("Tab,Ctrl-I,PgUp,page-up,pgdn,Page-Down,Home,End,Alt-BS,Alt-BSpace,shift-left,shift-right,btab,shift-tab,return,Enter,bspace", "")
+	pairs, _ = parseKeyChords("Tab,Ctrl-I,PgUp,page-up,pgdn,Page-Down,Home,End,Alt-BS,Alt-BSpace,shift-left,shift-right,btab,shift-tab,return,Enter,bspace", "")
 	if len(pairs) != 11 {
 		t.Error(11)
 	}
 	check(tui.Tab, "Ctrl-I")
-	check(tui.PgUp, "page-up")
+	check(tui.PageUp, "page-up")
-	check(tui.PgDn, "Page-Down")
+	check(tui.PageDown, "Page-Down")
 	check(tui.Home, "Home")
 	check(tui.End, "End")
-	check(tui.AltBS, "Alt-BSpace")
+	check(tui.AltBackspace, "Alt-BSpace")
-	check(tui.SLeft, "shift-left")
+	check(tui.ShiftLeft, "shift-left")
-	check(tui.SRight, "shift-right")
+	check(tui.ShiftRight, "shift-right")
-	check(tui.BTab, "shift-tab")
+	check(tui.ShiftTab, "shift-tab")
 	check(tui.CtrlM, "Enter")
-	check(tui.BSpace, "bspace")
+	check(tui.Backspace, "bspace")
 }
 
 func TestParseKeysWithComma(t *testing.T) {
@@ -206,40 +207,40 @@ func TestParseKeysWithComma(t *testing.T) {
 		}
 	}
 
-	pairs := parseKeyChords(",", "")
+	pairs, _ := parseKeyChords(",", "")
 	checkN(len(pairs), 1)
 	check(pairs, tui.Key(','), ",")
 
-	pairs = parseKeyChords(",,a,b", "")
+	pairs, _ = parseKeyChords(",,a,b", "")
 	checkN(len(pairs), 3)
 	check(pairs, tui.Key('a'), "a")
 	check(pairs, tui.Key('b'), "b")
 	check(pairs, tui.Key(','), ",")
 
-	pairs = parseKeyChords("a,b,,", "")
+	pairs, _ = parseKeyChords("a,b,,", "")
 	checkN(len(pairs), 3)
 	check(pairs, tui.Key('a'), "a")
 	check(pairs, tui.Key('b'), "b")
 	check(pairs, tui.Key(','), ",")
 
-	pairs = parseKeyChords("a,,,b", "")
+	pairs, _ = parseKeyChords("a,,,b", "")
 	checkN(len(pairs), 3)
 	check(pairs, tui.Key('a'), "a")
 	check(pairs, tui.Key('b'), "b")
 	check(pairs, tui.Key(','), ",")
 
-	pairs = parseKeyChords("a,,,b,c", "")
+	pairs, _ = parseKeyChords("a,,,b,c", "")
 	checkN(len(pairs), 4)
 	check(pairs, tui.Key('a'), "a")
 	check(pairs, tui.Key('b'), "b")
 	check(pairs, tui.Key('c'), "c")
 	check(pairs, tui.Key(','), ",")
 
-	pairs = parseKeyChords(",,,", "")
+	pairs, _ = parseKeyChords(",,,", "")
 	checkN(len(pairs), 1)
 	check(pairs, tui.Key(','), ",")
 
-	pairs = parseKeyChords(",ALT-,,", "")
+	pairs, _ = parseKeyChords(",ALT-,,", "")
 	checkN(len(pairs), 1)
 	check(pairs, tui.AltKey(','), "ALT-,")
 }
@@ -264,7 +265,7 @@ func TestBind(t *testing.T) {
 	check(tui.CtrlA.AsEvent(), "", actBeginningOfLine)
 	parseKeymap(keymap,
 		"ctrl-a:kill-line,ctrl-b:toggle-sort+up+down,c:page-up,alt-z:page-down,"+
-			"f1:execute(ls {+})+abort+execute(echo {+})+select-all,f2:execute/echo {}, {}, {}/,f3:execute[echo '({})'],f4:execute;less {};,"+
+			"f1:execute(ls {+})+abort+execute(echo \n{+})+select-all,f2:execute/echo {}, {}, {}/,f3:execute[echo '({})'],f4:execute;less {};,"+
 			"alt-a:execute-Multi@echo (,),[,],/,:,;,%,{}@,alt-b:execute;echo (,),[,],/,:,@,%,{};,"+
 			"x:Execute(foo+bar),X:execute/bar+baz/"+
 			",f1:+first,f1:+top"+
@@ -296,7 +297,7 @@ func TestBind(t *testing.T) {
 
 func TestColorSpec(t *testing.T) {
 	theme := tui.Dark256
-	dark := parseTheme(theme, "dark")
+	dark, _ := parseTheme(theme, "dark")
 	if *dark != *theme {
 		t.Errorf("colors should be equivalent")
 	}
@@ -304,7 +305,7 @@ func TestColorSpec(t *testing.T) {
 		t.Errorf("point should not be equivalent")
 	}
 
-	light := parseTheme(theme, "dark,light")
+	light, _ := parseTheme(theme, "dark,light")
 	if *light == *theme {
 		t.Errorf("should not be equivalent")
 	}
@@ -315,7 +316,7 @@ func TestColorSpec(t *testing.T) {
 		t.Errorf("point should not be equivalent")
 	}
 
-	customized := parseTheme(theme, "fg:231,bg:232")
+	customized, _ := parseTheme(theme, "fg:231,bg:232")
 	if customized.Fg.Color != 231 || customized.Bg.Color != 232 {
 		t.Errorf("color not customized")
 	}
@@ -328,17 +329,18 @@ func TestColorSpec(t *testing.T) {
 		t.Errorf("colors should now be equivalent: %v, %v", tui.Dark256, customized)
 	}
 
-	customized = parseTheme(theme, "fg:231,dark,bg:232")
+	customized, _ = parseTheme(theme, "fg:231,dark,bg:232")
 	if customized.Fg != tui.Dark256.Fg || customized.Bg == tui.Dark256.Bg {
 		t.Errorf("color not customized")
 	}
 }
 
 func TestDefaultCtrlNP(t *testing.T) {
+	index := 0
 	check := func(words []string, et tui.EventType, expected actionType) {
 		e := et.AsEvent()
 		opts := defaultOptions()
-		parseOptions(opts, words)
+		parseOptions(&index, opts, words)
 		postProcessOptions(opts)
 		if opts.Keymap[e][0].t != expected {
 			t.Error()
@@ -350,22 +352,23 @@ func TestDefaultCtrlNP(t *testing.T) {
 	check([]string{"--bind=ctrl-n:accept"}, tui.CtrlN, actAccept)
 	check([]string{"--bind=ctrl-p:accept"}, tui.CtrlP, actAccept)
 
-	f, _ := ioutil.TempFile("", "fzf-history")
+	f, _ := os.CreateTemp("", "fzf-history")
 	f.Close()
 	hist := "--history=" + f.Name()
 	check([]string{hist}, tui.CtrlN, actNextHistory)
-	check([]string{hist}, tui.CtrlP, actPreviousHistory)
+	check([]string{hist}, tui.CtrlP, actPrevHistory)
 
 	check([]string{hist, "--bind=ctrl-n:accept"}, tui.CtrlN, actAccept)
-	check([]string{hist, "--bind=ctrl-n:accept"}, tui.CtrlP, actPreviousHistory)
+	check([]string{hist, "--bind=ctrl-n:accept"}, tui.CtrlP, actPrevHistory)
 
 	check([]string{hist, "--bind=ctrl-p:accept"}, tui.CtrlN, actNextHistory)
 	check([]string{hist, "--bind=ctrl-p:accept"}, tui.CtrlP, actAccept)
 }
 
 func optsFor(words ...string) *Options {
+	index := 0
 	opts := defaultOptions()
-	parseOptions(opts, words)
+	parseOptions(&index, opts, words)
 	postProcessOptions(opts)
 	return opts
 }
@@ -451,7 +454,6 @@ func TestValidateSign(t *testing.T) {
 		{"> ", true},
 		{"아", true},
 		{"😀", true},
-		{"", false},
 		{">>>", false},
 	}
 
@@ -466,3 +468,35 @@ func TestValidateSign(t *testing.T) {
 		}
 	}
 }
+
+func TestParseSingleActionList(t *testing.T) {
+	actions, _ := parseSingleActionList("Execute@foo+bar,baz@+up+up+reload:down+down")
+	if len(actions) != 4 {
+		t.Errorf("Invalid number of actions parsed:%d", len(actions))
+	}
+	if actions[0].t != actExecute || actions[0].a != "foo+bar,baz" {
+		t.Errorf("Invalid action parsed: %v", actions[0])
+	}
+	if actions[1].t != actUp || actions[2].t != actUp {
+		t.Errorf("Invalid action parsed: %v / %v", actions[1], actions[2])
+	}
+	if actions[3].t != actReload || actions[3].a != "down+down" {
+		t.Errorf("Invalid action parsed: %v", actions[3])
+	}
+}
+
+func TestParseSingleActionListError(t *testing.T) {
+	_, err := parseSingleActionList("change-query(foobar)baz")
+	if err == nil {
+		t.Errorf("Failed to detect error")
+	}
+}
+
+func TestMaskActionContents(t *testing.T) {
+	original := ":execute((f)(o)(o)(b)(a)(r))+change-query@qu@ry@+up,x:reload:hello:world"
+	expected := ":execute                    +change-query       +up,x:reload            "
+	masked := maskActionContents(original)
+	if masked != expected {
+		t.Errorf("Not masked: %s", masked)
+	}
+}

src/pattern.go

@@ -23,6 +23,7 @@ type termType int
 const (
 	termFuzzy termType = iota
 	termExact
+	termExactBoundary
 	termPrefix
 	termSuffix
 	termEqual
@@ -51,6 +52,7 @@ type Pattern struct {
 	caseSensitive bool
 	normalize     bool
 	forward       bool
+	withPos       bool
 	text          []rune
 	termSets      []termSet
 	sortable      bool
@@ -59,33 +61,18 @@ type Pattern struct {
 	delimiter     Delimiter
 	nth           []Range
 	procFun       map[termType]algo.Algo
+	cache         *ChunkCache
 }
 
-var (
+var _splitRegex *regexp.Regexp
-	_patternCache map[string]*Pattern
-	_splitRegex   *regexp.Regexp
-	_cache        ChunkCache
-)
 
 func init() {
 	_splitRegex = regexp.MustCompile(" +")
-	clearPatternCache()
-	clearChunkCache()
-}
-
-func clearPatternCache() {
-	// We can uniquely identify the pattern for a given string since
-	// search mode and caseMode do not change while the program is running
-	_patternCache = make(map[string]*Pattern)
-}
-
-func clearChunkCache() {
-	_cache = NewChunkCache()
 }
 
 // BuildPattern builds Pattern object from the given arguments
-func BuildPattern(fuzzy bool, fuzzyAlgo algo.Algo, extended bool, caseMode Case, normalize bool, forward bool,
+func BuildPattern(cache *ChunkCache, patternCache map[string]*Pattern, fuzzy bool, fuzzyAlgo algo.Algo, extended bool, caseMode Case, normalize bool, forward bool,
-	cacheable bool, nth []Range, delimiter Delimiter, runes []rune) *Pattern {
+	withPos bool, cacheable bool, nth []Range, delimiter Delimiter, runes []rune) *Pattern {
 
 	var asString string
 	if extended {
@@ -97,7 +84,9 @@ func BuildPattern(fuzzy bool, fuzzyAlgo algo.Algo, extended bool, caseMode Case,
 		asString = string(runes)
 	}
 
-	cached, found := _patternCache[asString]
+	// We can uniquely identify the pattern for a given string since
+	// search mode and caseMode do not change while the program is running
+	cached, found := patternCache[asString]
 	if found {
 		return cached
 	}
@@ -145,34 +134,37 @@ func BuildPattern(fuzzy bool, fuzzyAlgo algo.Algo, extended bool, caseMode Case,
 		caseSensitive: caseSensitive,
 		normalize:     normalize,
 		forward:       forward,
+		withPos:       withPos,
 		text:          []rune(asString),
 		termSets:      termSets,
 		sortable:      sortable,
 		cacheable:     cacheable,
 		nth:           nth,
 		delimiter:     delimiter,
+		cache:         cache,
 		procFun:       make(map[termType]algo.Algo)}
 
 	ptr.cacheKey = ptr.buildCacheKey()
 	ptr.procFun[termFuzzy] = fuzzyAlgo
 	ptr.procFun[termEqual] = algo.EqualMatch
 	ptr.procFun[termExact] = algo.ExactMatchNaive
+	ptr.procFun[termExactBoundary] = algo.ExactMatchBoundary
 	ptr.procFun[termPrefix] = algo.PrefixMatch
 	ptr.procFun[termSuffix] = algo.SuffixMatch
 
-	_patternCache[asString] = ptr
+	patternCache[asString] = ptr
 	return ptr
 }
 
 func parseTerms(fuzzy bool, caseMode Case, normalize bool, str string) []termSet {
-	str = strings.Replace(str, "\\ ", "\t", -1)
+	str = strings.ReplaceAll(str, "\\ ", "\t")
 	tokens := _splitRegex.Split(str, -1)
 	sets := []termSet{}
 	set := termSet{}
 	switchSet := false
 	afterBar := false
 	for _, token := range tokens {
-		typ, inv, text := termFuzzy, false, strings.Replace(token, "\t", " ", -1)
+		typ, inv, text := termFuzzy, false, strings.ReplaceAll(token, "\t", " ")
 		lowerText := strings.ToLower(text)
 		caseSensitive := caseMode == CaseRespect ||
 			caseMode == CaseSmart && text != lowerText
@@ -203,15 +195,17 @@ func parseTerms(fuzzy bool, caseMode Case, normalize bool, str string) []termSet
 			text = text[:len(text)-1]
 		}
 
-		if strings.HasPrefix(text, "'") {
+		if len(text) > 2 && strings.HasPrefix(text, "'") && strings.HasSuffix(text, "'") {
+			typ = termExactBoundary
+			text = text[1 : len(text)-1]
+		} else if strings.HasPrefix(text, "'") {
 			// Flip exactness
 			if fuzzy && !inv {
 				typ = termExact
-				text = text[1:]
 			} else {
 				typ = termFuzzy
-				text = text[1:]
 			}
+			text = text[1:]
 		} else if strings.HasPrefix(text, "^") {
 			if typ == termSuffix {
 				typ = termEqual
@@ -281,18 +275,18 @@ func (p *Pattern) Match(chunk *Chunk, slab *util.Slab) []Result {
 	// ChunkCache: Exact match
 	cacheKey := p.CacheKey()
 	if p.cacheable {
-		if cached := _cache.Lookup(chunk, cacheKey); cached != nil {
+		if cached := p.cache.Lookup(chunk, cacheKey); cached != nil {
 			return cached
 		}
 	}
 
 	// Prefix/suffix cache
-	space := _cache.Search(chunk, cacheKey)
+	space := p.cache.Search(chunk, cacheKey)
 
 	matches := p.matchChunk(chunk, space, slab)
 
 	if p.cacheable {
-		_cache.Add(chunk, cacheKey, matches)
+		p.cache.Add(chunk, cacheKey, matches)
 	}
 	return matches
 }
@@ -302,13 +296,13 @@ func (p *Pattern) matchChunk(chunk *Chunk, space []Result, slab *util.Slab) []Re
 
 	if space == nil {
 		for idx := 0; idx < chunk.count; idx++ {
-			if match, _, _ := p.MatchItem(&chunk.items[idx], false, slab); match != nil {
+			if match, _, _ := p.MatchItem(&chunk.items[idx], p.withPos, slab); match != nil {
 				matches = append(matches, *match)
 			}
 		}
 	} else {
 		for _, result := range space {
-			if match, _, _ := p.MatchItem(result.item, false, slab); match != nil {
+			if match, _, _ := p.MatchItem(result.item, p.withPos, slab); match != nil {
 				matches = append(matches, *match)
 			}
 		}

src/pattern_test.go

@@ -64,10 +64,15 @@ func TestParseTermsEmpty(t *testing.T) {
 	}
 }
 
+func buildPattern(fuzzy bool, fuzzyAlgo algo.Algo, extended bool, caseMode Case, normalize bool, forward bool,
+	withPos bool, cacheable bool, nth []Range, delimiter Delimiter, runes []rune) *Pattern {
+	return BuildPattern(NewChunkCache(), make(map[string]*Pattern),
+		fuzzy, fuzzyAlgo, extended, caseMode, normalize, forward,
+		withPos, cacheable, nth, delimiter, runes)
+}
+
 func TestExact(t *testing.T) {
-	defer clearPatternCache()
+	pattern := buildPattern(true, algo.FuzzyMatchV2, true, CaseSmart, false, true, false, true,
-	clearPatternCache()
-	pattern := BuildPattern(true, algo.FuzzyMatchV2, true, CaseSmart, false, true, true,
 		[]Range{}, Delimiter{}, []rune("'abc"))
 	chars := util.ToChars([]byte("aabbcc abc"))
 	res, pos := algo.ExactMatchNaive(
@@ -81,9 +86,7 @@ func TestExact(t *testing.T) {
 }
 
 func TestEqual(t *testing.T) {
-	defer clearPatternCache()
+	pattern := buildPattern(true, algo.FuzzyMatchV2, true, CaseSmart, false, true, false, true, []Range{}, Delimiter{}, []rune("^AbC$"))
-	clearPatternCache()
-	pattern := BuildPattern(true, algo.FuzzyMatchV2, true, CaseSmart, false, true, true, []Range{}, Delimiter{}, []rune("^AbC$"))
 
 	match := func(str string, sidxExpected int, eidxExpected int) {
 		chars := util.ToChars([]byte(str))
@@ -104,19 +107,12 @@ func TestEqual(t *testing.T) {
 }
 
 func TestCaseSensitivity(t *testing.T) {
-	defer clearPatternCache()
+	pat1 := buildPattern(true, algo.FuzzyMatchV2, false, CaseSmart, false, true, false, true, []Range{}, Delimiter{}, []rune("abc"))
-	clearPatternCache()
+	pat2 := buildPattern(true, algo.FuzzyMatchV2, false, CaseSmart, false, true, false, true, []Range{}, Delimiter{}, []rune("Abc"))
-	pat1 := BuildPattern(true, algo.FuzzyMatchV2, false, CaseSmart, false, true, true, []Range{}, Delimiter{}, []rune("abc"))
+	pat3 := buildPattern(true, algo.FuzzyMatchV2, false, CaseIgnore, false, true, false, true, []Range{}, Delimiter{}, []rune("abc"))
-	clearPatternCache()
+	pat4 := buildPattern(true, algo.FuzzyMatchV2, false, CaseIgnore, false, true, false, true, []Range{}, Delimiter{}, []rune("Abc"))
-	pat2 := BuildPattern(true, algo.FuzzyMatchV2, false, CaseSmart, false, true, true, []Range{}, Delimiter{}, []rune("Abc"))
+	pat5 := buildPattern(true, algo.FuzzyMatchV2, false, CaseRespect, false, true, false, true, []Range{}, Delimiter{}, []rune("abc"))
-	clearPatternCache()
+	pat6 := buildPattern(true, algo.FuzzyMatchV2, false, CaseRespect, false, true, false, true, []Range{}, Delimiter{}, []rune("Abc"))
-	pat3 := BuildPattern(true, algo.FuzzyMatchV2, false, CaseIgnore, false, true, true, []Range{}, Delimiter{}, []rune("abc"))
-	clearPatternCache()
-	pat4 := BuildPattern(true, algo.FuzzyMatchV2, false, CaseIgnore, false, true, true, []Range{}, Delimiter{}, []rune("Abc"))
-	clearPatternCache()
-	pat5 := BuildPattern(true, algo.FuzzyMatchV2, false, CaseRespect, false, true, true, []Range{}, Delimiter{}, []rune("abc"))
-	clearPatternCache()
-	pat6 := BuildPattern(true, algo.FuzzyMatchV2, false, CaseRespect, false, true, true, []Range{}, Delimiter{}, []rune("Abc"))
 
 	if string(pat1.text) != "abc" || pat1.caseSensitive != false ||
 		string(pat2.text) != "Abc" || pat2.caseSensitive != true ||
@@ -129,7 +125,7 @@ func TestCaseSensitivity(t *testing.T) {
 }
 
 func TestOrigTextAndTransformed(t *testing.T) {
-	pattern := BuildPattern(true, algo.FuzzyMatchV2, true, CaseSmart, false, true, true, []Range{}, Delimiter{}, []rune("jg"))
+	pattern := buildPattern(true, algo.FuzzyMatchV2, true, CaseSmart, false, true, false, true, []Range{}, Delimiter{}, []rune("jg"))
 	tokens := Tokenize("junegunn", Delimiter{})
 	trans := Transform(tokens, []Range{{1, 1}})
 
@@ -163,15 +159,13 @@ func TestOrigTextAndTransformed(t *testing.T) {
 
 func TestCacheKey(t *testing.T) {
 	test := func(extended bool, patStr string, expected string, cacheable bool) {
-		clearPatternCache()
+		pat := buildPattern(true, algo.FuzzyMatchV2, extended, CaseSmart, false, true, false, true, []Range{}, Delimiter{}, []rune(patStr))
-		pat := BuildPattern(true, algo.FuzzyMatchV2, extended, CaseSmart, false, true, true, []Range{}, Delimiter{}, []rune(patStr))
 		if pat.CacheKey() != expected {
 			t.Errorf("Expected: %s, actual: %s", expected, pat.CacheKey())
 		}
 		if pat.cacheable != cacheable {
 			t.Errorf("Expected: %t, actual: %t (%s)", cacheable, pat.cacheable, patStr)
 		}
-		clearPatternCache()
 	}
 	test(false, "foo !bar", "foo !bar", true)
 	test(false, "foo | bar !baz", "foo | bar !baz", true)
@@ -187,15 +181,13 @@ func TestCacheKey(t *testing.T) {
 
 func TestCacheable(t *testing.T) {
 	test := func(fuzzy bool, str string, expected string, cacheable bool) {
-		clearPatternCache()
+		pat := buildPattern(fuzzy, algo.FuzzyMatchV2, true, CaseSmart, true, true, false, true, []Range{}, Delimiter{}, []rune(str))
-		pat := BuildPattern(fuzzy, algo.FuzzyMatchV2, true, CaseSmart, true, true, true, []Range{}, Delimiter{}, []rune(str))
 		if pat.CacheKey() != expected {
 			t.Errorf("Expected: %s, actual: %s", expected, pat.CacheKey())
 		}
 		if cacheable != pat.cacheable {
 			t.Errorf("Invalid Pattern.cacheable for \"%s\": %v (expected: %v)", str, pat.cacheable, cacheable)
 		}
-		clearPatternCache()
 	}
 	test(true, "foo bar", "foo\tbar", true)
 	test(true, "foo 'bar", "foo\tbar", false)

src/protector/protector.go

@@ -3,6 +3,4 @@
 package protector
 
 // Protect calls OS specific protections like pledge on OpenBSD
-func Protect() {
+func Protect() {}
-	return
-}

src/protector/protector_openbsd.go

@@ -6,5 +6,5 @@ import "golang.org/x/sys/unix"
 
 // Protect calls OS specific protections like pledge on OpenBSD
 func Protect() {
-	unix.PledgePromises("stdio rpath tty proc exec")
+	unix.PledgePromises("stdio dpath wpath rpath tty proc exec inet tmppath")
 }

src/proxy.go

@@ -0,0 +1,158 @@
+package fzf
+
+import (
+	"bufio"
+	"errors"
+	"fmt"
+	"io"
+	"os"
+	"os/exec"
+	"os/signal"
+	"path/filepath"
+	"regexp"
+	"strings"
+	"time"
+
+	"github.com/junegunn/fzf/src/tui"
+	"github.com/junegunn/fzf/src/util"
+)
+
+const becomeSuffix = ".become"
+
+func escapeSingleQuote(str string) string {
+	return "'" + strings.ReplaceAll(str, "'", "'\\''") + "'"
+}
+
+func fifo(name string) (string, error) {
+	ns := time.Now().UnixNano()
+	output := filepath.Join(os.TempDir(), fmt.Sprintf("fzf-%s-%d", name, ns))
+	output, err := mkfifo(output, 0600)
+	if err != nil {
+		return output, err
+	}
+	return output, nil
+}
+
+func runProxy(commandPrefix string, cmdBuilder func(temp string, needBash bool) (*exec.Cmd, error), opts *Options, withExports bool) (int, error) {
+	output, err := fifo("proxy-output")
+	if err != nil {
+		return ExitError, err
+	}
+	defer os.Remove(output)
+
+	// Take the output
+	go func() {
+		withOutputPipe(output, func(outputFile io.ReadCloser) {
+			if opts.Output == nil {
+				io.Copy(os.Stdout, outputFile)
+			} else {
+				reader := bufio.NewReader(outputFile)
+				sep := opts.PrintSep[0]
+				for {
+					item, err := reader.ReadString(sep)
+					if err != nil {
+						break
+					}
+					opts.Output <- item
+				}
+			}
+		})
+	}()
+
+	var command string
+	commandPrefix += ` --no-force-tty-in --proxy-script "$0"`
+	if opts.Input == nil && (opts.ForceTtyIn || util.IsTty(os.Stdin)) {
+		command = fmt.Sprintf(`%s > %q`, commandPrefix, output)
+	} else {
+		input, err := fifo("proxy-input")
+		if err != nil {
+			return ExitError, err
+		}
+		defer os.Remove(input)
+
+		go func() {
+			withInputPipe(input, func(inputFile io.WriteCloser) {
+				if opts.Input == nil {
+					io.Copy(inputFile, os.Stdin)
+				} else {
+					for item := range opts.Input {
+						fmt.Fprint(inputFile, item+opts.PrintSep)
+					}
+				}
+			})
+		}()
+
+		if withExports {
+			command = fmt.Sprintf(`%s < %q > %q`, commandPrefix, input, output)
+		} else {
+			// For mintty: cannot directly read named pipe from Go code
+			command = fmt.Sprintf(`command cat %q | %s > %q`, input, commandPrefix, output)
+		}
+	}
+
+	// To ensure that the options are processed by a POSIX-compliant shell,
+	// we need to write the command to a temporary file and execute it with sh.
+	var exports []string
+	needBash := false
+	if withExports {
+		validIdentifier := regexp.MustCompile(`^[a-zA-Z_][a-zA-Z0-9_]*$`)
+		for _, pairStr := range os.Environ() {
+			pair := strings.SplitN(pairStr, "=", 2)
+			if validIdentifier.MatchString(pair[0]) {
+				exports = append(exports, fmt.Sprintf("export %s=%s", pair[0], escapeSingleQuote(pair[1])))
+			} else if strings.HasPrefix(pair[0], "BASH_FUNC_") && strings.HasSuffix(pair[0], "%%") {
+				name := pair[0][10 : len(pair[0])-2]
+				exports = append(exports, name+pair[1])
+				exports = append(exports, "export -f "+name)
+				needBash = true
+			}
+		}
+	}
+	temp := WriteTemporaryFile(append(exports, command), "\n")
+	defer os.Remove(temp)
+
+	cmd, err := cmdBuilder(temp, needBash)
+	if err != nil {
+		return ExitError, err
+	}
+	cmd.Stderr = os.Stderr
+	intChan := make(chan os.Signal, 1)
+	defer close(intChan)
+	go func() {
+		if sig, valid := <-intChan; valid {
+			cmd.Process.Signal(sig)
+		}
+	}()
+	signal.Notify(intChan, os.Interrupt)
+	if err := cmd.Run(); err != nil {
+		if exitError, ok := err.(*exec.ExitError); ok {
+			code := exitError.ExitCode()
+			if code == ExitBecome {
+				becomeFile := temp + becomeSuffix
+				data, err := os.ReadFile(becomeFile)
+				os.Remove(becomeFile)
+				if err != nil {
+					return ExitError, err
+				}
+				elems := strings.Split(string(data), "\x00")
+				if len(elems) < 1 {
+					return ExitError, errors.New("invalid become command")
+				}
+				command := elems[0]
+				env := []string{}
+				if len(elems) > 1 {
+					env = elems[1:]
+				}
+				executor := util.NewExecutor(opts.WithShell)
+				ttyin, err := tui.TtyIn()
+				if err != nil {
+					return ExitError, err
+				}
+				executor.Become(ttyin, env, command)
+			}
+			return code, err
+		}
+	}
+
+	return ExitOk, nil
+}

src/proxy_unix.go

@@ -0,0 +1,41 @@
+//go:build !windows
+
+package fzf
+
+import (
+	"io"
+	"os"
+
+	"golang.org/x/sys/unix"
+)
+
+func sh(bash bool) (string, error) {
+	if bash {
+		return "bash", nil
+	}
+	return "sh", nil
+}
+
+func mkfifo(path string, mode uint32) (string, error) {
+	return path, unix.Mkfifo(path, mode)
+}
+
+func withOutputPipe(output string, task func(io.ReadCloser)) error {
+	outputFile, err := os.OpenFile(output, os.O_RDONLY, 0)
+	if err != nil {
+		return err
+	}
+	task(outputFile)
+	outputFile.Close()
+	return nil
+}
+
+func withInputPipe(input string, task func(io.WriteCloser)) error {
+	inputFile, err := os.OpenFile(input, os.O_WRONLY, 0)
+	if err != nil {
+		return err
+	}
+	task(inputFile)
+	inputFile.Close()
+	return nil
+}

src/proxy_windows.go

@@ -0,0 +1,85 @@
+//go:build windows
+
+package fzf
+
+import (
+	"fmt"
+	"io"
+	"os/exec"
+	"strconv"
+	"strings"
+	"sync/atomic"
+)
+
+var shPath atomic.Value
+
+func sh(bash bool) (string, error) {
+	if cached := shPath.Load(); cached != nil {
+		return cached.(string), nil
+	}
+
+	name := "sh"
+	if bash {
+		name = "bash"
+	}
+	cmd := exec.Command("cygpath", "-w", "/usr/bin/"+name)
+	bytes, err := cmd.Output()
+	if err != nil {
+		return "", err
+	}
+
+	sh := strings.TrimSpace(string(bytes))
+	shPath.Store(sh)
+	return sh, nil
+}
+
+func mkfifo(path string, mode uint32) (string, error) {
+	m := strconv.FormatUint(uint64(mode), 8)
+	sh, err := sh(false)
+	if err != nil {
+		return path, err
+	}
+	cmd := exec.Command(sh, "-c", fmt.Sprintf(`command mkfifo -m %s %q`, m, path))
+	if err := cmd.Run(); err != nil {
+		return path, err
+	}
+	return path + ".lnk", nil
+}
+
+func withOutputPipe(output string, task func(io.ReadCloser)) error {
+	sh, err := sh(false)
+	if err != nil {
+		return err
+	}
+	cmd := exec.Command(sh, "-c", fmt.Sprintf(`command cat %q`, output))
+	outputFile, err := cmd.StdoutPipe()
+	if err != nil {
+		return err
+	}
+	if err := cmd.Start(); err != nil {
+		return err
+	}
+
+	task(outputFile)
+	cmd.Wait()
+	return nil
+}
+
+func withInputPipe(input string, task func(io.WriteCloser)) error {
+	sh, err := sh(false)
+	if err != nil {
+		return err
+	}
+	cmd := exec.Command(sh, "-c", fmt.Sprintf(`command cat - > %q`, input))
+	inputFile, err := cmd.StdinPipe()
+	if err != nil {
+		return err
+	}
+	if err := cmd.Start(); err != nil {
+		return err
+	}
+	task(inputFile)
+	inputFile.Close()
+	cmd.Wait()
+	return nil
+}

src/reader.go

@@ -1,9 +1,10 @@
 package fzf
 
 import (
-	"bufio"
+	"bytes"
 	"context"
 	"io"
+	"io/fs"
 	"os"
 	"os/exec"
 	"path/filepath"
@@ -11,27 +12,29 @@ import (
 	"sync/atomic"
 	"time"
 
+	"github.com/charlievieth/fastwalk"
 	"github.com/junegunn/fzf/src/util"
-	"github.com/saracen/walker"
 )
 
 // Reader reads from command or standard input
 type Reader struct {
 	pusher   func([]byte) bool
+	executor *util.Executor
 	eventBox *util.EventBox
 	delimNil bool
 	event    int32
 	finChan  chan bool
 	mutex    sync.Mutex
 	exec     *exec.Cmd
+	execOut  io.ReadCloser
 	command  *string
 	killed   bool
 	wait     bool
 }
 
 // NewReader returns new Reader object
-func NewReader(pusher func([]byte) bool, eventBox *util.EventBox, delimNil bool, wait bool) *Reader {
+func NewReader(pusher func([]byte) bool, eventBox *util.EventBox, executor *util.Executor, delimNil bool, wait bool) *Reader {
-	return &Reader{pusher, eventBox, delimNil, int32(EvtReady), make(chan bool, 1), sync.Mutex{}, nil, nil, false, wait}
+	return &Reader{pusher, executor, eventBox, delimNil, int32(EvtReady), make(chan bool, 1), sync.Mutex{}, nil, nil, nil, false, wait}
 }
 
 func (r *Reader) startEventPoller() {
@@ -76,39 +79,51 @@ func (r *Reader) fin(success bool) {
 
 func (r *Reader) terminate() {
 	r.mutex.Lock()
-	defer func() { r.mutex.Unlock() }()
-
 	r.killed = true
 	if r.exec != nil && r.exec.Process != nil {
+		r.execOut.Close()
 		util.KillCommand(r.exec)
-	} else if defaultCommand != "" {
+	} else {
 		os.Stdin.Close()
 	}
+	r.mutex.Unlock()
 }
 
-func (r *Reader) restart(command string) {
+func (r *Reader) restart(command commandSpec, environ []string) {
 	r.event = int32(EvtReady)
 	r.startEventPoller()
-	success := r.readFromCommand(nil, command)
+	success := r.readFromCommand(command.command, environ)
 	r.fin(success)
+	removeFiles(command.tempFiles)
+}
+
+func (r *Reader) readChannel(inputChan chan string) bool {
+	for {
+		item, more := <-inputChan
+		if !more {
+			break
+		}
+		if r.pusher([]byte(item)) {
+			atomic.StoreInt32(&r.event, int32(EvtReadNew))
+		}
+	}
+	return true
 }
 
 // ReadSource reads data from the default command or from standard input
-func (r *Reader) ReadSource() {
+func (r *Reader) ReadSource(inputChan chan string, root string, opts walkerOpts, ignores []string, initCmd string, initEnv []string) {
 	r.startEventPoller()
 	var success bool
-	if util.IsTty() {
+	if inputChan != nil {
-		// The default command for *nix requires bash
+		success = r.readChannel(inputChan)
-		shell := "bash"
+	} else if len(initCmd) > 0 {
+		success = r.readFromCommand(initCmd, initEnv)
+	} else if util.IsTty(os.Stdin) {
 		cmd := os.Getenv("FZF_DEFAULT_COMMAND")
 		if len(cmd) == 0 {
-			if defaultCommand != "" {
+			success = r.readFiles(root, opts, ignores)
-				success = r.readFromCommand(&shell, defaultCommand)
-			} else {
-				success = r.readFiles()
-			}
 		} else {
-			success = r.readFromCommand(nil, cmd)
+			success = r.readFromCommand(cmd, initEnv)
 		}
 	} else {
 		success = r.readFromStdin()
@@ -117,32 +132,90 @@ func (r *Reader) ReadSource() {
 }
 
 func (r *Reader) feed(src io.Reader) {
+	/*
+		readerSlabSize, ae := strconv.Atoi(os.Getenv("SLAB_KB"))
+		if ae != nil {
+			readerSlabSize = 128 * 1024
+		} else {
+			readerSlabSize *= 1024
+		}
+		readerBufferSize, be := strconv.Atoi(os.Getenv("BUF_KB"))
+		if be != nil {
+			readerBufferSize = 64 * 1024
+		} else {
+			readerBufferSize *= 1024
+		}
+	*/
+
 	delim := byte('\n')
+	trimCR := util.IsWindows()
 	if r.delimNil {
 		delim = '\000'
+		trimCR = false
 	}
-	reader := bufio.NewReaderSize(src, readerBufferSize)
+
+	slab := make([]byte, readerSlabSize)
+	leftover := []byte{}
+	var err error
 	for {
-		// ReadBytes returns err != nil if and only if the returned data does not
+		n := 0
-		// end in delim.
+		scope := slab[:util.Min(len(slab), readerBufferSize)]
-		bytea, err := reader.ReadBytes(delim)
+		for i := 0; i < 100; i++ {
-		byteaLen := len(bytea)
+			n, err = src.Read(scope)
-		if byteaLen > 0 {
+			if n > 0 || err != nil {
-			if err == nil {
+				break
-				// get rid of carriage return if under Windows:
-				if util.IsWindows() && byteaLen >= 2 && bytea[byteaLen-2] == byte('\r') {
-					bytea = bytea[:byteaLen-2]
-				} else {
-					bytea = bytea[:byteaLen-1]
-				}
-			}
-			if r.pusher(bytea) {
-				atomic.StoreInt32(&r.event, int32(EvtReadNew))
 			}
 		}
-		if err != nil {
+
+		// We're not making any progress after 100 tries. Stop.
+		if n == 0 {
 			break
 		}
+
+		buf := slab[:n]
+		slab = slab[n:]
+
+		for len(buf) > 0 {
+			if i := bytes.IndexByte(buf, delim); i >= 0 {
+				// Found the delimiter
+				slice := buf[:i+1]
+				buf = buf[i+1:]
+				if trimCR && len(slice) >= 2 && slice[len(slice)-2] == byte('\r') {
+					slice = slice[:len(slice)-2]
+				} else {
+					slice = slice[:len(slice)-1]
+				}
+				if len(leftover) > 0 {
+					slice = append(leftover, slice...)
+					leftover = []byte{}
+				}
+				if (err == nil || len(slice) > 0) && r.pusher(slice) {
+					atomic.StoreInt32(&r.event, int32(EvtReadNew))
+				}
+			} else {
+				// Could not find the delimiter in the buffer
+				//   NOTE: We can further optimize this by keeping track of the cursor
+				//   position in the slab so that a straddling item that doesn't go
+				//   beyond the boundary of a slab doesn't need to be copied to
+				//   another buffer. However, the performance gain is negligible in
+				//   practice (< 0.1%) and is not
+				//   worth the added complexity.
+				leftover = append(leftover, buf...)
+				break
+			}
+		}
+
+		if err == io.EOF {
+			leftover = append(leftover, buf...)
+			break
+		}
+
+		if len(slab) == 0 {
+			slab = make([]byte, readerSlabSize)
+		}
+	}
+	if len(leftover) > 0 && r.pusher(leftover) {
+		atomic.StoreInt32(&r.event, int32(EvtReadNew))
 	}
 }
 
@@ -151,16 +224,57 @@ func (r *Reader) readFromStdin() bool {
 	return true
 }
 
-func (r *Reader) readFiles() bool {
+func isSymlinkToDir(path string, de os.DirEntry) bool {
+	if de.Type()&fs.ModeSymlink == 0 {
+		return false
+	}
+	if s, err := os.Stat(path); err == nil {
+		return s.IsDir()
+	}
+	return false
+}
+
+func trimPath(path string) string {
+	bytes := stringBytes(path)
+
+	for len(bytes) > 1 && bytes[0] == '.' && (bytes[1] == '/' || bytes[1] == '\\') {
+		bytes = bytes[2:]
+	}
+
+	if len(bytes) == 0 {
+		return "."
+	}
+
+	return byteString(bytes)
+}
+
+func (r *Reader) readFiles(root string, opts walkerOpts, ignores []string) bool {
 	r.killed = false
-	fn := func(path string, mode os.FileInfo) error {
+	conf := fastwalk.Config{
-		path = filepath.Clean(path)
+		Follow: opts.follow,
+		// Use forward slashes when running a Windows binary under WSL or MSYS
+		ToSlash: fastwalk.DefaultToSlash(),
+		Sort:    fastwalk.SortFilesFirst,
+	}
+	fn := func(path string, de os.DirEntry, err error) error {
+		if err != nil {
+			return nil
+		}
+		path = trimPath(path)
 		if path != "." {
-			isDir := mode.Mode().IsDir()
+			isDir := de.IsDir()
-			if isDir && filepath.Base(path)[0] == '.' {
+			if isDir || opts.follow && isSymlinkToDir(path, de) {
-				return filepath.SkipDir
+				base := filepath.Base(path)
+				if !opts.hidden && base[0] == '.' {
+					return filepath.SkipDir
+				}
+				for _, ignore := range ignores {
+					if ignore == base {
+						return filepath.SkipDir
+					}
+				}
 			}
-			if !isDir && r.pusher([]byte(path)) {
+			if ((opts.file && !isDir) || (opts.dir && isDir)) && r.pusher(stringBytes(path)) {
 				atomic.StoreInt32(&r.event, int32(EvtReadNew))
 			}
 		}
@@ -171,31 +285,34 @@ func (r *Reader) readFiles() bool {
 		}
 		return nil
 	}
-	cb := walker.WithErrorCallback(func(pathname string, err error) error {
+	return fastwalk.Walk(&conf, root, fn) == nil
-		return nil
-	})
-	return walker.Walk(".", fn, cb) == nil
 }
 
-func (r *Reader) readFromCommand(shell *string, command string) bool {
+func (r *Reader) readFromCommand(command string, environ []string) bool {
 	r.mutex.Lock()
 	r.killed = false
 	r.command = &command
-	if shell != nil {
+	r.exec = r.executor.ExecCommand(command, true)
-		r.exec = util.ExecCommandWith(*shell, command, true)
+	if environ != nil {
-	} else {
+		r.exec.Env = environ
-		r.exec = util.ExecCommand(command, true)
 	}
-	out, err := r.exec.StdoutPipe()
+
+	var err error
+	r.execOut, err = r.exec.StdoutPipe()
 	if err != nil {
+		r.exec = nil
 		r.mutex.Unlock()
 		return false
 	}
+
 	err = r.exec.Start()
-	r.mutex.Unlock()
 	if err != nil {
+		r.exec = nil
+		r.mutex.Unlock()
 		return false
 	}
-	r.feed(out)
+
+	r.mutex.Unlock()
+	r.feed(r.execOut)
 	return r.exec.Wait() == nil
 }

src/reader_test.go

@@ -10,9 +10,10 @@ import (
 func TestReadFromCommand(t *testing.T) {
 	strs := []string{}
 	eb := util.NewEventBox()
+	exec := util.NewExecutor("")
 	reader := NewReader(
 		func(s []byte) bool { strs = append(strs, string(s)); return true },
-		eb, false, true)
+		eb, exec, false, true)
 
 	reader.startEventPoller()
 
@@ -22,7 +23,7 @@ func TestReadFromCommand(t *testing.T) {
 	}
 
 	// Normal command
-	reader.fin(reader.readFromCommand(nil, `echo abc&&echo def`))
+	reader.fin(reader.readFromCommand(`echo abc&&echo def`, nil))
 	if len(strs) != 2 || strs[0] != "abc" || strs[1] != "def" {
 		t.Errorf("%s", strs)
 	}
@@ -47,7 +48,7 @@ func TestReadFromCommand(t *testing.T) {
 	reader.startEventPoller()
 
 	// Failing command
-	reader.fin(reader.readFromCommand(nil, `no-such-command`))
+	reader.fin(reader.readFromCommand(`no-such-command`, nil))
 	strs = []string{}
 	if len(strs) > 0 {
 		t.Errorf("%s", strs)

src/result.go

@@ -15,6 +15,8 @@ type Offset [2]int32
 type colorOffset struct {
 	offset [2]int32
 	color  tui.ColorPair
+	match  bool
+	url    *url
 }
 
 type Result struct {
@@ -49,6 +51,22 @@ func buildResult(item *Item, offsets []Offset, score int) Result {
 		case byScore:
 			// Higher is better
 			val = math.MaxUint16 - util.AsUint16(score)
+		case byChunk:
+			if validOffsetFound {
+				b := minBegin
+				e := maxEnd
+				for ; b >= 1; b-- {
+					if unicode.IsSpace(item.text.Get(b - 1)) {
+						break
+					}
+				}
+				for ; e < numChars; e++ {
+					if unicode.IsSpace(item.text.Get(e)) {
+						break
+					}
+				}
+				val = util.AsUint16(e - b)
+			}
 		case byLength:
 			val = item.TrimLength()
 		case byBegin, byEnd:
@@ -64,7 +82,7 @@ func buildResult(item *Item, offsets []Offset, score int) Result {
 				if criterion == byBegin {
 					val = util.AsUint16(minEnd - whitePrefixLen)
 				} else {
-					val = util.AsUint16(math.MaxUint16 - math.MaxUint16*(maxEnd-whitePrefixLen)/int(item.TrimLength()))
+					val = util.AsUint16(math.MaxUint16 - math.MaxUint16*(maxEnd-whitePrefixLen)/(int(item.TrimLength())+1))
 				}
 			}
 		}
@@ -93,7 +111,7 @@ func (result *Result) colorOffsets(matchOffsets []Offset, theme *tui.ColorTheme,
 	if len(itemColors) == 0 {
 		var offsets []colorOffset
 		for _, off := range matchOffsets {
-			offsets = append(offsets, colorOffset{offset: [2]int32{off[0], off[1]}, color: colMatch})
+			offsets = append(offsets, colorOffset{offset: [2]int32{off[0], off[1]}, color: colMatch, match: true})
 		}
 		return offsets
 	}
@@ -122,7 +140,9 @@ func (result *Result) colorOffsets(matchOffsets []Offset, theme *tui.ColorTheme,
 		for i := off[0]; i < off[1]; i++ {
 			// Negative of 1-based index of itemColors
 			// - The extra -1 means highlighted
-			cols[i] = cols[i]*-1 - 1
+			if cols[i] >= 0 {
+				cols[i] = cols[i]*-1 - 1
+			}
 		}
 	}
 
@@ -158,8 +178,11 @@ func (result *Result) colorOffsets(matchOffsets []Offset, theme *tui.ColorTheme,
 		if curr != 0 && idx > start {
 			if curr < 0 {
 				color := colMatch
+				var url *url
 				if curr < -1 && theme.Colored {
-					origColor := ansiToColorPair(itemColors[-curr-2], colMatch)
+					ansi := itemColors[-curr-2]
+					url = ansi.color.url
+					origColor := ansiToColorPair(ansi, colMatch)
 					// hl or hl+ only sets the foreground color, so colMatch is the
 					// combination of either [hl and bg] or [hl+ and bg+].
 					//
@@ -175,12 +198,14 @@ func (result *Result) colorOffsets(matchOffsets []Offset, theme *tui.ColorTheme,
 					}
 				}
 				colors = append(colors, colorOffset{
-					offset: [2]int32{int32(start), int32(idx)}, color: color})
+					offset: [2]int32{int32(start), int32(idx)}, color: color, match: true, url: url})
 			} else {
 				ansi := itemColors[curr-1]
 				colors = append(colors, colorOffset{
 					offset: [2]int32{int32(start), int32(idx)},
-					color:  ansiToColorPair(ansi, colBase)})
+					color:  ansiToColorPair(ansi, colBase),
+					match:  false,
+					url:    ansi.color.url})
 			}
 		}
 	}

src/result_test.go

@@ -54,9 +54,9 @@ func TestResultRank(t *testing.T) {
 	// FIXME global
 	sortCriteria = []criterion{byScore, byLength}
 
-	strs := [][]rune{[]rune("foo"), []rune("foobar"), []rune("bar"), []rune("baz")}
+	str := []rune("foo")
 	item1 := buildResult(
-		withIndex(&Item{text: util.RunesToChars(strs[0])}, 1), []Offset{}, 2)
+		withIndex(&Item{text: util.RunesToChars(str)}, 1), []Offset{}, 2)
 	if item1.points[3] != math.MaxUint16-2 || // Bonus
 		item1.points[2] != 3 || // Length
 		item1.points[1] != 0 || // Unused
@@ -65,7 +65,7 @@ func TestResultRank(t *testing.T) {
 		t.Error(item1)
 	}
 	// Only differ in index
-	item2 := buildResult(&Item{text: util.RunesToChars(strs[0])}, []Offset{}, 2)
+	item2 := buildResult(&Item{text: util.RunesToChars(str)}, []Offset{}, 2)
 
 	items := []Result{item1, item2}
 	sort.Sort(ByRelevance(items))
@@ -98,19 +98,36 @@ func TestResultRank(t *testing.T) {
 	}
 }
 
+func TestChunkTiebreak(t *testing.T) {
+	// FIXME global
+	sortCriteria = []criterion{byScore, byChunk}
+
+	score := 100
+	test := func(input string, offset Offset, chunk string) {
+		item := buildResult(withIndex(&Item{text: util.RunesToChars([]rune(input))}, 1), []Offset{offset}, score)
+		if !(item.points[3] == math.MaxUint16-uint16(score) && item.points[2] == uint16(len(chunk))) {
+			t.Error(item.points)
+		}
+	}
+	test("hello foobar goodbye", Offset{8, 9}, "foobar")
+	test("hello foobar goodbye", Offset{7, 18}, "foobar goodbye")
+	test("hello foobar goodbye", Offset{0, 1}, "hello")
+	test("hello foobar goodbye", Offset{5, 7}, "hello foobar") // TBD
+}
+
 func TestColorOffset(t *testing.T) {
 	// ------------ 20 ----  --  ----
 	//   ++++++++        ++++++++++
 	// --++++++++--    --++++++++++---
 
-	offsets := []Offset{{5, 15}, {25, 35}}
+	offsets := []Offset{{5, 15}, {10, 12}, {25, 35}}
 	item := Result{
 		item: &Item{
 			colors: &[]ansiOffset{
-				{[2]int32{0, 20}, ansiState{1, 5, 0, -1}},
+				{[2]int32{0, 20}, ansiState{1, 5, 0, -1, nil}},
-				{[2]int32{22, 27}, ansiState{2, 6, tui.Bold, -1}},
+				{[2]int32{22, 27}, ansiState{2, 6, tui.Bold, -1, nil}},
-				{[2]int32{30, 32}, ansiState{3, 7, 0, -1}},
+				{[2]int32{30, 32}, ansiState{3, 7, 0, -1, nil}},
-				{[2]int32{33, 40}, ansiState{4, 8, tui.Bold, -1}}}}}
+				{[2]int32{33, 40}, ansiState{4, 8, tui.Bold, -1, nil}}}}}
 
 	colBase := tui.NewColorPair(89, 189, tui.AttrUndefined)
 	colMatch := tui.NewColorPair(99, 199, tui.AttrUndefined)

src/server.go

@@ -0,0 +1,246 @@
+package fzf
+
+import (
+	"bufio"
+	"bytes"
+	"crypto/subtle"
+	"errors"
+	"fmt"
+	"net"
+	"os"
+	"regexp"
+	"strconv"
+	"strings"
+	"time"
+)
+
+var getRegex *regexp.Regexp
+
+func init() {
+	getRegex = regexp.MustCompile(`^GET /(?:\?([a-z0-9=&]+))? HTTP`)
+}
+
+type getParams struct {
+	limit  int
+	offset int
+}
+
+const (
+	crlf             = "\r\n"
+	httpOk           = "HTTP/1.1 200 OK" + crlf
+	httpBadRequest   = "HTTP/1.1 400 Bad Request" + crlf
+	httpUnauthorized = "HTTP/1.1 401 Unauthorized" + crlf
+	httpUnavailable  = "HTTP/1.1 503 Service Unavailable" + crlf
+	httpReadTimeout  = 10 * time.Second
+	channelTimeout   = 2 * time.Second
+	jsonContentType  = "Content-Type: application/json" + crlf
+	maxContentLength = 1024 * 1024
+)
+
+type httpServer struct {
+	apiKey        []byte
+	actionChannel chan []*action
+	getHandler    func(getParams) string
+}
+
+type listenAddress struct {
+	host string
+	port int
+}
+
+func (addr listenAddress) IsLocal() bool {
+	return addr.host == "localhost" || addr.host == "127.0.0.1"
+}
+
+var defaultListenAddr = listenAddress{"localhost", 0}
+
+func parseListenAddress(address string) (listenAddress, error) {
+	parts := strings.SplitN(address, ":", 3)
+	if len(parts) == 1 {
+		parts = []string{"localhost", parts[0]}
+	}
+	if len(parts) != 2 {
+		return defaultListenAddr, fmt.Errorf("invalid listen address: %s", address)
+	}
+	portStr := parts[len(parts)-1]
+	port, err := strconv.Atoi(portStr)
+	if err != nil || port < 0 || port > 65535 {
+		return defaultListenAddr, fmt.Errorf("invalid listen port: %s", portStr)
+	}
+	if len(parts[0]) == 0 {
+		parts[0] = "localhost"
+	}
+	return listenAddress{parts[0], port}, nil
+}
+
+func startHttpServer(address listenAddress, actionChannel chan []*action, getHandler func(getParams) string) (net.Listener, int, error) {
+	host := address.host
+	port := address.port
+	apiKey := os.Getenv("FZF_API_KEY")
+	if !address.IsLocal() && len(apiKey) == 0 {
+		return nil, port, errors.New("FZF_API_KEY is required to allow remote access")
+	}
+	addrStr := fmt.Sprintf("%s:%d", host, port)
+	listener, err := net.Listen("tcp", addrStr)
+	if err != nil {
+		return nil, port, fmt.Errorf("failed to listen on %s", addrStr)
+	}
+	if port == 0 {
+		addr := listener.Addr().String()
+		parts := strings.Split(addr, ":")
+		if len(parts) < 2 {
+			return nil, port, fmt.Errorf("cannot extract port: %s", addr)
+		}
+		var err error
+		port, err = strconv.Atoi(parts[len(parts)-1])
+		if err != nil {
+			return nil, port, err
+		}
+	}
+
+	server := httpServer{
+		apiKey:        []byte(apiKey),
+		actionChannel: actionChannel,
+		getHandler:    getHandler,
+	}
+
+	go func() {
+		for {
+			conn, err := listener.Accept()
+			if err != nil {
+				if errors.Is(err, net.ErrClosed) {
+					return
+				}
+				continue
+			}
+			conn.Write([]byte(server.handleHttpRequest(conn)))
+			conn.Close()
+		}
+	}()
+
+	return listener, port, nil
+}
+
+// Here we are writing a simplistic HTTP server without using net/http
+// package to reduce the size of the binary.
+//
+// * No --listen:            2.8MB
+// * --listen with net/http: 5.7MB
+// * --listen w/o net/http:  3.3MB
+func (server *httpServer) handleHttpRequest(conn net.Conn) string {
+	contentLength := 0
+	apiKey := ""
+	body := ""
+	answer := func(code string, message string) string {
+		message += "\n"
+		return code + fmt.Sprintf("Content-Length: %d%s", len(message), crlf+crlf+message)
+	}
+	unauthorized := func(message string) string {
+		return answer(httpUnauthorized, message)
+	}
+	bad := func(message string) string {
+		return answer(httpBadRequest, message)
+	}
+	good := func(message string) string {
+		return answer(httpOk+jsonContentType, message)
+	}
+	conn.SetReadDeadline(time.Now().Add(httpReadTimeout))
+	scanner := bufio.NewScanner(conn)
+	scanner.Split(func(data []byte, atEOF bool) (int, []byte, error) {
+		found := bytes.Index(data, []byte(crlf))
+		if found >= 0 {
+			token := data[:found+len(crlf)]
+			return len(token), token, nil
+		}
+		if atEOF || len(body)+len(data) >= contentLength {
+			return 0, data, bufio.ErrFinalToken
+		}
+		return 0, nil, nil
+	})
+
+	section := 0
+	for scanner.Scan() {
+		text := scanner.Text()
+		switch section {
+		case 0:
+			getMatch := getRegex.FindStringSubmatch(text)
+			if len(getMatch) > 0 {
+				response := server.getHandler(parseGetParams(getMatch[1]))
+				if len(response) > 0 {
+					return good(response)
+				}
+				return answer(httpUnavailable+jsonContentType, `{"error":"timeout"}`)
+			} else if !strings.HasPrefix(text, "POST / HTTP") {
+				return bad("invalid request method")
+			}
+			section++
+		case 1:
+			if text == crlf {
+				if contentLength == 0 {
+					return bad("content-length header missing")
+				}
+				section++
+				continue
+			}
+			pair := strings.SplitN(text, ":", 2)
+			if len(pair) == 2 {
+				switch strings.ToLower(pair[0]) {
+				case "content-length":
+					length, err := strconv.Atoi(strings.TrimSpace(pair[1]))
+					if err != nil || length <= 0 || length > maxContentLength {
+						return bad("invalid content length")
+					}
+					contentLength = length
+				case "x-api-key":
+					apiKey = strings.TrimSpace(pair[1])
+				}
+			}
+		case 2:
+			body += text
+		}
+	}
+
+	if len(server.apiKey) != 0 && subtle.ConstantTimeCompare([]byte(apiKey), server.apiKey) != 1 {
+		return unauthorized("invalid api key")
+	}
+
+	if len(body) < contentLength {
+		return bad("incomplete request")
+	}
+	body = body[:contentLength]
+
+	actions, err := parseSingleActionList(strings.Trim(string(body), "\r\n"))
+	if err != nil {
+		return bad(err.Error())
+	}
+	if len(actions) == 0 {
+		return bad("no action specified")
+	}
+
+	select {
+	case server.actionChannel <- actions:
+	case <-time.After(channelTimeout):
+		return httpUnavailable + crlf
+	}
+	return httpOk + crlf
+}
+
+func parseGetParams(query string) getParams {
+	params := getParams{limit: 100, offset: 0}
+	for _, pair := range strings.Split(query, "&") {
+		parts := strings.SplitN(pair, "=", 2)
+		if len(parts) == 2 {
+			switch parts[0] {
+			case "limit", "offset":
+				if val, err := strconv.Atoi(parts[1]); err == nil {
+					if parts[0] == "limit" {
+						params.limit = val
+					} else {
+						params.offset = val
+					}
+				}
+			}
+		}
+	}
+	return params
+}

src/terminal_test.go

@@ -12,6 +12,22 @@ import (
 	"github.com/junegunn/fzf/src/util"
 )
 
+func replacePlaceholderTest(template string, stripAnsi bool, delimiter Delimiter, printsep string, forcePlus bool, query string, allItems []*Item) string {
+	replaced, _ := replacePlaceholder(replacePlaceholderParams{
+		template:   template,
+		stripAnsi:  stripAnsi,
+		delimiter:  delimiter,
+		printsep:   printsep,
+		forcePlus:  forcePlus,
+		query:      query,
+		allItems:   allItems,
+		lastAction: actBackwardDeleteCharEof,
+		prompt:     "prompt",
+		executor:   util.NewExecutor(""),
+	})
+	return replaced
+}
+
 func TestReplacePlaceholder(t *testing.T) {
 	item1 := newItem("  foo'bar \x1b[31mbaz\x1b[m")
 	items1 := []*Item{item1, item1}
@@ -52,90 +68,90 @@ func TestReplacePlaceholder(t *testing.T) {
 	*/
 
 	// {}, preserve ansi
-	result = replacePlaceholder("echo {}", false, Delimiter{}, printsep, false, "query", items1)
+	result = replacePlaceholderTest("echo {}", false, Delimiter{}, printsep, false, "query", items1)
 	checkFormat("echo {{.O}}  foo{{.I}}bar \x1b[31mbaz\x1b[m{{.O}}")
 
 	// {}, strip ansi
-	result = replacePlaceholder("echo {}", true, Delimiter{}, printsep, false, "query", items1)
+	result = replacePlaceholderTest("echo {}", true, Delimiter{}, printsep, false, "query", items1)
 	checkFormat("echo {{.O}}  foo{{.I}}bar baz{{.O}}")
 
 	// {}, with multiple items
-	result = replacePlaceholder("echo {}", true, Delimiter{}, printsep, false, "query", items2)
+	result = replacePlaceholderTest("echo {}", true, Delimiter{}, printsep, false, "query", items2)
 	checkFormat("echo {{.O}}foo{{.I}}bar baz{{.O}}")
 
 	// {..}, strip leading whitespaces, preserve ansi
-	result = replacePlaceholder("echo {..}", false, Delimiter{}, printsep, false, "query", items1)
+	result = replacePlaceholderTest("echo {..}", false, Delimiter{}, printsep, false, "query", items1)
 	checkFormat("echo {{.O}}foo{{.I}}bar \x1b[31mbaz\x1b[m{{.O}}")
 
 	// {..}, strip leading whitespaces, strip ansi
-	result = replacePlaceholder("echo {..}", true, Delimiter{}, printsep, false, "query", items1)
+	result = replacePlaceholderTest("echo {..}", true, Delimiter{}, printsep, false, "query", items1)
 	checkFormat("echo {{.O}}foo{{.I}}bar baz{{.O}}")
 
 	// {q}
-	result = replacePlaceholder("echo {} {q}", true, Delimiter{}, printsep, false, "query", items1)
+	result = replacePlaceholderTest("echo {} {q}", true, Delimiter{}, printsep, false, "query", items1)
 	checkFormat("echo {{.O}}  foo{{.I}}bar baz{{.O}} {{.O}}query{{.O}}")
 
 	// {q}, multiple items
-	result = replacePlaceholder("echo {+}{q}{+}", true, Delimiter{}, printsep, false, "query 'string'", items2)
+	result = replacePlaceholderTest("echo {+}{q}{+}", true, Delimiter{}, printsep, false, "query 'string'", items2)
 	checkFormat("echo {{.O}}foo{{.I}}bar baz{{.O}} {{.O}}FOO{{.I}}BAR BAZ{{.O}}{{.O}}query {{.I}}string{{.I}}{{.O}}{{.O}}foo{{.I}}bar baz{{.O}} {{.O}}FOO{{.I}}BAR BAZ{{.O}}")
 
-	result = replacePlaceholder("echo {}{q}{}", true, Delimiter{}, printsep, false, "query 'string'", items2)
+	result = replacePlaceholderTest("echo {}{q}{}", true, Delimiter{}, printsep, false, "query 'string'", items2)
 	checkFormat("echo {{.O}}foo{{.I}}bar baz{{.O}}{{.O}}query {{.I}}string{{.I}}{{.O}}{{.O}}foo{{.I}}bar baz{{.O}}")
 
-	result = replacePlaceholder("echo {1}/{2}/{2,1}/{-1}/{-2}/{}/{..}/{n.t}/\\{}/\\{1}/\\{q}/{3}", true, Delimiter{}, printsep, false, "query", items1)
+	result = replacePlaceholderTest("echo {1}/{2}/{2,1}/{-1}/{-2}/{}/{..}/{n.t}/\\{}/\\{1}/\\{q}/{3}", true, Delimiter{}, printsep, false, "query", items1)
 	checkFormat("echo {{.O}}foo{{.I}}bar{{.O}}/{{.O}}baz{{.O}}/{{.O}}bazfoo{{.I}}bar{{.O}}/{{.O}}baz{{.O}}/{{.O}}foo{{.I}}bar{{.O}}/{{.O}}  foo{{.I}}bar baz{{.O}}/{{.O}}foo{{.I}}bar baz{{.O}}/{n.t}/{}/{1}/{q}/{{.O}}{{.O}}")
 
-	result = replacePlaceholder("echo {1}/{2}/{-1}/{-2}/{..}/{n.t}/\\{}/\\{1}/\\{q}/{3}", true, Delimiter{}, printsep, false, "query", items2)
+	result = replacePlaceholderTest("echo {1}/{2}/{-1}/{-2}/{..}/{n.t}/\\{}/\\{1}/\\{q}/{3}", true, Delimiter{}, printsep, false, "query", items2)
 	checkFormat("echo {{.O}}foo{{.I}}bar{{.O}}/{{.O}}baz{{.O}}/{{.O}}baz{{.O}}/{{.O}}foo{{.I}}bar{{.O}}/{{.O}}foo{{.I}}bar baz{{.O}}/{n.t}/{}/{1}/{q}/{{.O}}{{.O}}")
 
-	result = replacePlaceholder("echo {+1}/{+2}/{+-1}/{+-2}/{+..}/{n.t}/\\{}/\\{1}/\\{q}/{+3}", true, Delimiter{}, printsep, false, "query", items2)
+	result = replacePlaceholderTest("echo {+1}/{+2}/{+-1}/{+-2}/{+..}/{n.t}/\\{}/\\{1}/\\{q}/{+3}", true, Delimiter{}, printsep, false, "query", items2)
 	checkFormat("echo {{.O}}foo{{.I}}bar{{.O}} {{.O}}FOO{{.I}}BAR{{.O}}/{{.O}}baz{{.O}} {{.O}}BAZ{{.O}}/{{.O}}baz{{.O}} {{.O}}BAZ{{.O}}/{{.O}}foo{{.I}}bar{{.O}} {{.O}}FOO{{.I}}BAR{{.O}}/{{.O}}foo{{.I}}bar baz{{.O}} {{.O}}FOO{{.I}}BAR BAZ{{.O}}/{n.t}/{}/{1}/{q}/{{.O}}{{.O}} {{.O}}{{.O}}")
 
 	// forcePlus
-	result = replacePlaceholder("echo {1}/{2}/{-1}/{-2}/{..}/{n.t}/\\{}/\\{1}/\\{q}/{3}", true, Delimiter{}, printsep, true, "query", items2)
+	result = replacePlaceholderTest("echo {1}/{2}/{-1}/{-2}/{..}/{n.t}/\\{}/\\{1}/\\{q}/{3}", true, Delimiter{}, printsep, true, "query", items2)
 	checkFormat("echo {{.O}}foo{{.I}}bar{{.O}} {{.O}}FOO{{.I}}BAR{{.O}}/{{.O}}baz{{.O}} {{.O}}BAZ{{.O}}/{{.O}}baz{{.O}} {{.O}}BAZ{{.O}}/{{.O}}foo{{.I}}bar{{.O}} {{.O}}FOO{{.I}}BAR{{.O}}/{{.O}}foo{{.I}}bar baz{{.O}} {{.O}}FOO{{.I}}BAR BAZ{{.O}}/{n.t}/{}/{1}/{q}/{{.O}}{{.O}} {{.O}}{{.O}}")
 
 	// Whitespace preserving flag with "'" delimiter
-	result = replacePlaceholder("echo {s1}", true, Delimiter{str: &delim}, printsep, false, "query", items1)
+	result = replacePlaceholderTest("echo {s1}", true, Delimiter{str: &delim}, printsep, false, "query", items1)
 	checkFormat("echo {{.O}}  foo{{.O}}")
 
-	result = replacePlaceholder("echo {s2}", true, Delimiter{str: &delim}, printsep, false, "query", items1)
+	result = replacePlaceholderTest("echo {s2}", true, Delimiter{str: &delim}, printsep, false, "query", items1)
 	checkFormat("echo {{.O}}bar baz{{.O}}")
 
-	result = replacePlaceholder("echo {s}", true, Delimiter{str: &delim}, printsep, false, "query", items1)
+	result = replacePlaceholderTest("echo {s}", true, Delimiter{str: &delim}, printsep, false, "query", items1)
 	checkFormat("echo {{.O}}  foo{{.I}}bar baz{{.O}}")
 
-	result = replacePlaceholder("echo {s..}", true, Delimiter{str: &delim}, printsep, false, "query", items1)
+	result = replacePlaceholderTest("echo {s..}", true, Delimiter{str: &delim}, printsep, false, "query", items1)
 	checkFormat("echo {{.O}}  foo{{.I}}bar baz{{.O}}")
 
 	// Whitespace preserving flag with regex delimiter
 	regex = regexp.MustCompile(`\w+`)
 
-	result = replacePlaceholder("echo {s1}", true, Delimiter{regex: regex}, printsep, false, "query", items1)
+	result = replacePlaceholderTest("echo {s1}", true, Delimiter{regex: regex}, printsep, false, "query", items1)
 	checkFormat("echo {{.O}}  {{.O}}")
 
-	result = replacePlaceholder("echo {s2}", true, Delimiter{regex: regex}, printsep, false, "query", items1)
+	result = replacePlaceholderTest("echo {s2}", true, Delimiter{regex: regex}, printsep, false, "query", items1)
 	checkFormat("echo {{.O}}{{.I}}{{.O}}")
 
-	result = replacePlaceholder("echo {s3}", true, Delimiter{regex: regex}, printsep, false, "query", items1)
+	result = replacePlaceholderTest("echo {s3}", true, Delimiter{regex: regex}, printsep, false, "query", items1)
 	checkFormat("echo {{.O}} {{.O}}")
 
 	// No match
-	result = replacePlaceholder("echo {}/{+}", true, Delimiter{}, printsep, false, "query", []*Item{nil, nil})
+	result = replacePlaceholderTest("echo {}/{+}", true, Delimiter{}, printsep, false, "query", []*Item{nil, nil})
 	check("echo /")
 
 	// No match, but with selections
-	result = replacePlaceholder("echo {}/{+}", true, Delimiter{}, printsep, false, "query", []*Item{nil, item1})
+	result = replacePlaceholderTest("echo {}/{+}", true, Delimiter{}, printsep, false, "query", []*Item{nil, item1})
 	checkFormat("echo /{{.O}}  foo{{.I}}bar baz{{.O}}")
 
 	// String delimiter
-	result = replacePlaceholder("echo {}/{1}/{2}", true, Delimiter{str: &delim}, printsep, false, "query", items1)
+	result = replacePlaceholderTest("echo {}/{1}/{2}", true, Delimiter{str: &delim}, printsep, false, "query", items1)
 	checkFormat("echo {{.O}}  foo{{.I}}bar baz{{.O}}/{{.O}}foo{{.O}}/{{.O}}bar baz{{.O}}")
 
 	// Regex delimiter
 	regex = regexp.MustCompile("[oa]+")
 	// foo'bar baz
-	result = replacePlaceholder("echo {}/{1}/{3}/{2..3}", true, Delimiter{regex: regex}, printsep, false, "query", items1)
+	result = replacePlaceholderTest("echo {}/{1}/{3}/{2..3}", true, Delimiter{regex: regex}, printsep, false, "query", items1)
 	checkFormat("echo {{.O}}  foo{{.I}}bar baz{{.O}}/{{.O}}f{{.O}}/{{.O}}r b{{.O}}/{{.O}}{{.I}}bar b{{.O}}")
 
 	/*
@@ -155,7 +171,6 @@ func TestReplacePlaceholder(t *testing.T) {
 		newItem("7a 7b 7c 7d 7e 7f"),
 	}
 	stripAnsi := false
-	printsep = "\n"
 	forcePlus := false
 	query := "sample query"
 
@@ -198,18 +213,23 @@ func TestReplacePlaceholder(t *testing.T) {
 	// query flag is not removed after parsing, so it gets doubled
 	// while the double q is invalid, it is useful here for testing purposes
 	templateToOutput[`{q}`] = "{{.O}}" + query + "{{.O}}"
+	templateToOutput[`{fzf:query}`] = "{{.O}}" + query + "{{.O}}"
+	templateToOutput[`{fzf:action} {fzf:prompt}`] = "backward-delete-char-eof 'prompt'"
 
 	// IV. escaping placeholder
 	templateToOutput[`\{}`] = `{}`
+	templateToOutput[`\{q}`] = `{q}`
+	templateToOutput[`\{fzf:query}`] = `{fzf:query}`
+	templateToOutput[`\{fzf:action}`] = `{fzf:action}`
 	templateToOutput[`\{++}`] = `{++}`
 	templateToOutput[`{++}`] = templateToOutput[`{+}`]
 
 	for giveTemplate, wantOutput := range templateToOutput {
-		result = replacePlaceholder(giveTemplate, stripAnsi, Delimiter{}, printsep, forcePlus, query, items3)
+		result = replacePlaceholderTest(giveTemplate, stripAnsi, Delimiter{}, printsep, forcePlus, query, items3)
 		checkFormat(wantOutput)
 	}
 	for giveTemplate, wantOutput := range templateToFile {
-		path := replacePlaceholder(giveTemplate, stripAnsi, Delimiter{}, printsep, forcePlus, query, items3)
+		path := replacePlaceholderTest(giveTemplate, stripAnsi, Delimiter{}, printsep, forcePlus, query, items3)
 
 		data, err := readFile(path)
 		if err != nil {
@@ -226,6 +246,7 @@ func TestQuoteEntry(t *testing.T) {
 	unixStyle := quotes{``, `'`, `'\''`, `"`, `\`}
 	windowsStyle := quotes{`^`, `^"`, `'`, `\^"`, `\\`}
 	var effectiveStyle quotes
+	exec := util.NewExecutor("")
 
 	if util.IsWindows() {
 		effectiveStyle = windowsStyle
@@ -260,7 +281,7 @@ func TestQuoteEntry(t *testing.T) {
 	}
 
 	for input, expected := range tests {
-		escaped := quoteEntry(input)
+		escaped := exec.QuoteEntry(input)
 		expected = templateToString(expected, effectiveStyle)
 		if escaped != expected {
 			t.Errorf("Input: %s, expected: %s, actual %s", input, expected, escaped)
@@ -299,9 +320,9 @@ func TestUnixCommands(t *testing.T) {
 
 // purpose of this test is to demonstrate some shortcomings of fzf's templating system on Windows
 func TestWindowsCommands(t *testing.T) {
-	if !util.IsWindows() {
+	// XXX Deprecated
-		t.SkipNow()
+	t.SkipNow()
-	}
+
 	tests := []testCase{
 		// reference: give{template, query, items}, want{output OR match}
 
@@ -421,10 +442,10 @@ func TestPowershellCommands(t *testing.T) {
 }
 
 /*
-	Test typical valid placeholders and parsing of them.
+Test typical valid placeholders and parsing of them.
 
-	Also since the parser assumes the input is matched with `placeholder` regex,
+Also since the parser assumes the input is matched with `placeholder` regex,
-	the regex is tested here as well.
+the regex is tested here as well.
 */
 func TestParsePlaceholder(t *testing.T) {
 	// give, want pairs
@@ -563,7 +584,7 @@ func testCommands(t *testing.T, tests []testCase) {
 
 	// evaluate the test cases
 	for idx, test := range tests {
-		gotOutput := replacePlaceholder(
+		gotOutput := replacePlaceholderTest(
 			test.give.template, stripAnsi, delimiter, printsep, forcePlus,
 			test.give.query,
 			test.give.allItems)
@@ -605,7 +626,7 @@ func (flags placeholderFlags) encodePlaceholder() string {
 	if flags.file {
 		encoded += "f"
 	}
-	if flags.query {
+	if flags.forceUpdate { // FIXME
 		encoded += "q"
 	}
 	return encoded

src/terminal_unix.go

@@ -5,8 +5,9 @@ package fzf
 import (
 	"os"
 	"os/signal"
-	"strings"
 	"syscall"
+
+	"golang.org/x/sys/unix"
 )
 
 func notifyOnResize(resizeChan chan<- os.Signal) {
@@ -14,13 +15,10 @@ func notifyOnResize(resizeChan chan<- os.Signal) {
 }
 
 func notifyStop(p *os.Process) {
-	p.Signal(syscall.SIGSTOP)
+	pid := p.Pid
-}
+	pgid, err := unix.Getpgid(pid)
-
+	if err == nil {
-func notifyOnCont(resizeChan chan<- os.Signal) {
+		pid = pgid * -1
-	signal.Notify(resizeChan, syscall.SIGCONT)
+	}
-}
+	unix.Kill(pid, syscall.SIGTSTP)
-
-func quoteEntry(entry string) string {
-	return "'" + strings.Replace(entry, "'", "'\\''", -1) + "'"
 }

src/terminal_windows.go

@@ -4,8 +4,6 @@ package fzf
 
 import (
 	"os"
-	"regexp"
-	"strings"
 )
 
 func notifyOnResize(resizeChan chan<- os.Signal) {
@@ -15,31 +13,3 @@ func notifyOnResize(resizeChan chan<- os.Signal) {
 func notifyStop(p *os.Process) {
 	// NOOP
 }
-
-func notifyOnCont(resizeChan chan<- os.Signal) {
-	// NOOP
-}
-
-func quoteEntry(entry string) string {
-	shell := os.Getenv("SHELL")
-	if len(shell) == 0 {
-		shell = "cmd"
-	}
-
-	if strings.Contains(shell, "cmd") {
-		// backslash escaping is done here for applications
-		// (see ripgrep test case in terminal_test.go#TestWindowsCommands)
-		escaped := strings.Replace(entry, `\`, `\\`, -1)
-		escaped = `"` + strings.Replace(escaped, `"`, `\"`, -1) + `"`
-		// caret is the escape character for cmd shell
-		r, _ := regexp.Compile(`[&|<>()@^%!"]`)
-		return r.ReplaceAllStringFunc(escaped, func(match string) string {
-			return "^" + match
-		})
-	} else if strings.Contains(shell, "pwsh") || strings.Contains(shell, "powershell") {
-		escaped := strings.Replace(entry, `"`, `\"`, -1)
-		return "'" + strings.Replace(escaped, "'", "''", -1) + "'"
-	} else {
-		return "'" + strings.Replace(entry, "'", "'\\''", -1) + "'"
-	}
-}

src/tmux.go

@@ -0,0 +1,60 @@
+package fzf
+
+import (
+	"os"
+	"os/exec"
+
+	"github.com/junegunn/fzf/src/tui"
+)
+
+func runTmux(args []string, opts *Options) (int, error) {
+	// Prepare arguments
+	fzf := args[0]
+	args = append([]string{"--bind=ctrl-z:ignore"}, args[1:]...)
+	if opts.BorderShape == tui.BorderUndefined {
+		args = append(args, "--border")
+	}
+	argStr := escapeSingleQuote(fzf)
+	for _, arg := range args {
+		argStr += " " + escapeSingleQuote(arg)
+	}
+	argStr += ` --no-tmux --no-height`
+
+	// Get current directory
+	dir, err := os.Getwd()
+	if err != nil {
+		dir = "."
+	}
+
+	// Set tmux options for popup placement
+	// C        Both    The centre of the terminal
+	// R        -x      The right side of the terminal
+	// P        Both    The bottom left of the pane
+	// M        Both    The mouse position
+	// W        Both    The window position on the status line
+	// S        -y      The line above or below the status line
+	tmuxArgs := []string{"display-popup", "-E", "-B", "-d", dir}
+	switch opts.Tmux.position {
+	case posUp:
+		tmuxArgs = append(tmuxArgs, "-xC", "-y0")
+	case posDown:
+		tmuxArgs = append(tmuxArgs, "-xC", "-y9999")
+	case posLeft:
+		tmuxArgs = append(tmuxArgs, "-x0", "-yC")
+	case posRight:
+		tmuxArgs = append(tmuxArgs, "-xR", "-yC")
+	case posCenter:
+		tmuxArgs = append(tmuxArgs, "-xC", "-yC")
+	}
+	tmuxArgs = append(tmuxArgs, "-w"+opts.Tmux.width.String())
+	tmuxArgs = append(tmuxArgs, "-h"+opts.Tmux.height.String())
+
+	return runProxy(argStr, func(temp string, needBash bool) (*exec.Cmd, error) {
+		sh, err := sh(needBash)
+		if err != nil {
+			return nil, err
+		}
+		tmuxArgs = append(tmuxArgs, sh, temp)
+		return exec.Command("tmux", tmuxArgs...), nil
+	}, opts, true)
+}

src/tokenizer.go

@@ -91,7 +91,7 @@ func withPrefixLengths(tokens []string, begin int) []Token {
 
 	prefixLength := begin
 	for idx := range tokens {
-		chars := util.ToChars([]byte(tokens[idx]))
+		chars := util.ToChars(stringBytes(tokens[idx]))
 		ret[idx] = Token{&chars, int32(prefixLength)}
 		prefixLength += chars.Length()
 	}
@@ -187,7 +187,7 @@ func Transform(tokens []Token, withNth []Range) []Token {
 		if r.begin == r.end {
 			idx := r.begin
 			if idx == rangeEllipsis {
-				chars := util.ToChars([]byte(joinTokens(tokens)))
+				chars := util.ToChars(stringBytes(joinTokens(tokens)))
 				parts = append(parts, &chars)
 			} else {
 				if idx < 0 {

src/tokenizer_test.go

@@ -71,14 +71,14 @@ func TestTransform(t *testing.T) {
 	{
 		tokens := Tokenize(input, Delimiter{})
 		{
-			ranges := splitNth("1,2,3")
+			ranges, _ := splitNth("1,2,3")
 			tx := Transform(tokens, ranges)
 			if joinTokens(tx) != "abc:  def:  ghi:  " {
 				t.Errorf("%s", tx)
 			}
 		}
 		{
-			ranges := splitNth("1..2,3,2..,1")
+			ranges, _ := splitNth("1..2,3,2..,1")
 			tx := Transform(tokens, ranges)
 			if string(joinTokens(tx)) != "abc:  def:  ghi:  def:  ghi:  jklabc:  " ||
 				len(tx) != 4 ||
@@ -93,7 +93,7 @@ func TestTransform(t *testing.T) {
 	{
 		tokens := Tokenize(input, delimiterRegexp(":"))
 		{
-			ranges := splitNth("1..2,3,2..,1")
+			ranges, _ := splitNth("1..2,3,2..,1")
 			tx := Transform(tokens, ranges)
 			if joinTokens(tx) != "  abc:  def:  ghi:  def:  ghi:  jkl  abc:" ||
 				len(tx) != 4 ||
@@ -108,5 +108,6 @@ func TestTransform(t *testing.T) {
 }
 
 func TestTransformIndexOutOfBounds(t *testing.T) {
-	Transform([]Token{}, splitNth("1"))
+	s, _ := splitNth("1")
+	Transform([]Token{}, s)
 }

src/tui/dummy.go

@@ -8,32 +8,41 @@ func HasFullscreenRenderer() bool {
 	return false
 }
 
+var DefaultBorderShape = BorderRounded
+
 func (a Attr) Merge(b Attr) Attr {
 	return a | b
 }
 
 const (
 	AttrUndefined = Attr(0)
-	AttrRegular   = Attr(1 << 7)
+	AttrRegular   = Attr(1 << 8)
-	AttrClear     = Attr(1 << 8)
+	AttrClear     = Attr(1 << 9)
 
-	Bold      = Attr(1)
+	Bold          = Attr(1)
-	Dim       = Attr(1 << 1)
+	Dim           = Attr(1 << 1)
-	Italic    = Attr(1 << 2)
+	Italic        = Attr(1 << 2)
-	Underline = Attr(1 << 3)
+	Underline     = Attr(1 << 3)
-	Blink     = Attr(1 << 4)
+	Blink         = Attr(1 << 4)
-	Blink2    = Attr(1 << 5)
+	Blink2        = Attr(1 << 5)
-	Reverse   = Attr(1 << 6)
+	Reverse       = Attr(1 << 6)
+	StrikeThrough = Attr(1 << 7)
 )
 
-func (r *FullscreenRenderer) Init()             {}
+func (r *FullscreenRenderer) Init() error                        { return nil }
-func (r *FullscreenRenderer) Pause(bool)        {}
+func (r *FullscreenRenderer) Resize(maxHeightFunc func(int) int) {}
-func (r *FullscreenRenderer) Resume(bool, bool) {}
+func (r *FullscreenRenderer) Pause(bool)                         {}
-func (r *FullscreenRenderer) Clear()            {}
+func (r *FullscreenRenderer) Resume(bool, bool)                  {}
-func (r *FullscreenRenderer) Refresh()          {}
+func (r *FullscreenRenderer) PassThrough(string)                 {}
-func (r *FullscreenRenderer) Close()            {}
+func (r *FullscreenRenderer) Clear()                             {}
+func (r *FullscreenRenderer) NeedScrollbarRedraw() bool          { return false }
+func (r *FullscreenRenderer) ShouldEmitResizeEvent() bool        { return false }
+func (r *FullscreenRenderer) Refresh()                           {}
+func (r *FullscreenRenderer) Close()                             {}
+func (r *FullscreenRenderer) Size() TermSize                     { return TermSize{} }
 
 func (r *FullscreenRenderer) GetChar() Event { return Event{} }
+func (r *FullscreenRenderer) Top() int       { return 0 }
 func (r *FullscreenRenderer) MaxX() int      { return 0 }
 func (r *FullscreenRenderer) MaxY() int      { return 0 }
 

src/tui/eventtype_string.go

@@ -0,0 +1,122 @@
+// Code generated by "stringer -type=EventType"; DO NOT EDIT.
+
+package tui
+
+import "strconv"
+
+func _() {
+	// An "invalid array index" compiler error signifies that the constant values have changed.
+	// Re-run the stringer command to generate them again.
+	var x [1]struct{}
+	_ = x[Rune-0]
+	_ = x[CtrlA-1]
+	_ = x[CtrlB-2]
+	_ = x[CtrlC-3]
+	_ = x[CtrlD-4]
+	_ = x[CtrlE-5]
+	_ = x[CtrlF-6]
+	_ = x[CtrlG-7]
+	_ = x[CtrlH-8]
+	_ = x[Tab-9]
+	_ = x[CtrlJ-10]
+	_ = x[CtrlK-11]
+	_ = x[CtrlL-12]
+	_ = x[CtrlM-13]
+	_ = x[CtrlN-14]
+	_ = x[CtrlO-15]
+	_ = x[CtrlP-16]
+	_ = x[CtrlQ-17]
+	_ = x[CtrlR-18]
+	_ = x[CtrlS-19]
+	_ = x[CtrlT-20]
+	_ = x[CtrlU-21]
+	_ = x[CtrlV-22]
+	_ = x[CtrlW-23]
+	_ = x[CtrlX-24]
+	_ = x[CtrlY-25]
+	_ = x[CtrlZ-26]
+	_ = x[Esc-27]
+	_ = x[CtrlSpace-28]
+	_ = x[CtrlDelete-29]
+	_ = x[CtrlBackSlash-30]
+	_ = x[CtrlRightBracket-31]
+	_ = x[CtrlCaret-32]
+	_ = x[CtrlSlash-33]
+	_ = x[ShiftTab-34]
+	_ = x[Backspace-35]
+	_ = x[Delete-36]
+	_ = x[PageUp-37]
+	_ = x[PageDown-38]
+	_ = x[Up-39]
+	_ = x[Down-40]
+	_ = x[Left-41]
+	_ = x[Right-42]
+	_ = x[Home-43]
+	_ = x[End-44]
+	_ = x[Insert-45]
+	_ = x[ShiftUp-46]
+	_ = x[ShiftDown-47]
+	_ = x[ShiftLeft-48]
+	_ = x[ShiftRight-49]
+	_ = x[ShiftDelete-50]
+	_ = x[F1-51]
+	_ = x[F2-52]
+	_ = x[F3-53]
+	_ = x[F4-54]
+	_ = x[F5-55]
+	_ = x[F6-56]
+	_ = x[F7-57]
+	_ = x[F8-58]
+	_ = x[F9-59]
+	_ = x[F10-60]
+	_ = x[F11-61]
+	_ = x[F12-62]
+	_ = x[AltBackspace-63]
+	_ = x[AltUp-64]
+	_ = x[AltDown-65]
+	_ = x[AltLeft-66]
+	_ = x[AltRight-67]
+	_ = x[AltShiftUp-68]
+	_ = x[AltShiftDown-69]
+	_ = x[AltShiftLeft-70]
+	_ = x[AltShiftRight-71]
+	_ = x[Alt-72]
+	_ = x[CtrlAlt-73]
+	_ = x[Invalid-74]
+	_ = x[Fatal-75]
+	_ = x[Mouse-76]
+	_ = x[DoubleClick-77]
+	_ = x[LeftClick-78]
+	_ = x[RightClick-79]
+	_ = x[SLeftClick-80]
+	_ = x[SRightClick-81]
+	_ = x[ScrollUp-82]
+	_ = x[ScrollDown-83]
+	_ = x[SScrollUp-84]
+	_ = x[SScrollDown-85]
+	_ = x[PreviewScrollUp-86]
+	_ = x[PreviewScrollDown-87]
+	_ = x[Resize-88]
+	_ = x[Change-89]
+	_ = x[BackwardEOF-90]
+	_ = x[Start-91]
+	_ = x[Load-92]
+	_ = x[Focus-93]
+	_ = x[One-94]
+	_ = x[Zero-95]
+	_ = x[Result-96]
+	_ = x[Jump-97]
+	_ = x[JumpCancel-98]
+	_ = x[ClickHeader-99]
+}
+
+const _EventType_name = "RuneCtrlACtrlBCtrlCCtrlDCtrlECtrlFCtrlGCtrlHTabCtrlJCtrlKCtrlLCtrlMCtrlNCtrlOCtrlPCtrlQCtrlRCtrlSCtrlTCtrlUCtrlVCtrlWCtrlXCtrlYCtrlZEscCtrlSpaceCtrlDeleteCtrlBackSlashCtrlRightBracketCtrlCaretCtrlSlashShiftTabBackspaceDeletePageUpPageDownUpDownLeftRightHomeEndInsertShiftUpShiftDownShiftLeftShiftRightShiftDeleteF1F2F3F4F5F6F7F8F9F10F11F12AltBackspaceAltUpAltDownAltLeftAltRightAltShiftUpAltShiftDownAltShiftLeftAltShiftRightAltCtrlAltInvalidFatalMouseDoubleClickLeftClickRightClickSLeftClickSRightClickScrollUpScrollDownSScrollUpSScrollDownPreviewScrollUpPreviewScrollDownResizeChangeBackwardEOFStartLoadFocusOneZeroResultJumpJumpCancelClickHeader"
+
+var _EventType_index = [...]uint16{0, 4, 9, 14, 19, 24, 29, 34, 39, 44, 47, 52, 57, 62, 67, 72, 77, 82, 87, 92, 97, 102, 107, 112, 117, 122, 127, 132, 135, 144, 154, 167, 183, 192, 201, 209, 218, 224, 230, 238, 240, 244, 248, 253, 257, 260, 266, 273, 282, 291, 301, 312, 314, 316, 318, 320, 322, 324, 326, 328, 330, 333, 336, 339, 351, 356, 363, 370, 378, 388, 400, 412, 425, 428, 435, 442, 447, 452, 463, 472, 482, 492, 503, 511, 521, 530, 541, 556, 573, 579, 585, 596, 601, 605, 610, 613, 617, 623, 627, 637, 648}
+
+func (i EventType) String() string {
+	if i < 0 || i >= EventType(len(_EventType_index)-1) {
+		return "EventType(" + strconv.FormatInt(int64(i), 10) + ")"
+	}
+	return _EventType_name[_EventType_index[i]:_EventType_index[i+1]]
+}

src/tui/light.go

@@ -2,6 +2,7 @@ package tui
 
 import (
 	"bytes"
+	"errors"
 	"fmt"
 	"os"
 	"regexp"
@@ -10,7 +11,7 @@ import (
 	"time"
 	"unicode/utf8"
 
-	"github.com/mattn/go-runewidth"
+	"github.com/junegunn/fzf/src/util"
 	"github.com/rivo/uniseg"
 
 	"golang.org/x/term"
@@ -28,24 +29,34 @@ const (
 
 const consoleDevice string = "/dev/tty"
 
-var offsetRegexp *regexp.Regexp = regexp.MustCompile("(.*)\x1b\\[([0-9]+);([0-9]+)R")
+var offsetRegexp = regexp.MustCompile("(.*)\x1b\\[([0-9]+);([0-9]+)R")
-var offsetRegexpBegin *regexp.Regexp = regexp.MustCompile("^\x1b\\[[0-9]+;[0-9]+R")
+var offsetRegexpBegin = regexp.MustCompile("^\x1b\\[[0-9]+;[0-9]+R")
 
-func (r *LightRenderer) stderr(str string) {
+func (r *LightRenderer) PassThrough(str string) {
-	r.stderrInternal(str, true)
+	r.queued.WriteString("\x1b7" + str + "\x1b8")
 }
 
-// FIXME: Need better handling of non-displayable characters
+func (r *LightRenderer) stderr(str string) {
-func (r *LightRenderer) stderrInternal(str string, allowNLCR bool) {
+	r.stderrInternal(str, true, "")
+}
+
+const CR string = "\x1b[2m␍"
+const LF string = "\x1b[2m␊"
+
+func (r *LightRenderer) stderrInternal(str string, allowNLCR bool, resetCode string) {
 	bytes := []byte(str)
 	runes := []rune{}
 	for len(bytes) > 0 {
 		r, sz := utf8.DecodeRune(bytes)
 		nlcr := r == '\n' || r == '\r'
 		if r >= 32 || r == '\x1b' || nlcr {
-			if r == utf8.RuneError || nlcr && !allowNLCR {
+			if nlcr && !allowNLCR {
-				runes = append(runes, ' ')
+				if r == '\r' {
-			} else {
+					runes = append(runes, []rune(CR+resetCode)...)
+				} else {
+					runes = append(runes, []rune(LF+resetCode)...)
+				}
+			} else if r != utf8.RuneError {
 				runes = append(runes, r)
 			}
 		}
@@ -54,26 +65,30 @@ func (r *LightRenderer) stderrInternal(str string, allowNLCR bool) {
 	r.queued.WriteString(string(runes))
 }
 
-func (r *LightRenderer) csi(code string) {
+func (r *LightRenderer) csi(code string) string {
-	r.stderr("\x1b[" + code)
+	fullcode := "\x1b[" + code
+	r.stderr(fullcode)
+	return fullcode
 }
 
 func (r *LightRenderer) flush() {
 	if r.queued.Len() > 0 {
-		fmt.Fprint(os.Stderr, "\x1b[?25l"+r.queued.String()+"\x1b[?25h")
+		fmt.Fprint(r.ttyout, "\x1b[?7l\x1b[?25l"+r.queued.String()+"\x1b[?25h\x1b[?7h")
 		r.queued.Reset()
 	}
 }
 
 // Light renderer
 type LightRenderer struct {
+	closed        *util.AtomicBool
 	theme         *ColorTheme
 	mouse         bool
 	forceBlack    bool
 	clearOnExit   bool
 	prevDownTime  time.Time
-	clickY        []int
+	clicks        [][2]int
 	ttyin         *os.File
+	ttyout        *os.File
 	buffer        []byte
 	origState     *term.State
 	width         int
@@ -112,19 +127,25 @@ type LightWindow struct {
 	bg       Color
 }
 
-func NewLightRenderer(theme *ColorTheme, forceBlack bool, mouse bool, tabstop int, clearOnExit bool, fullscreen bool, maxHeightFunc func(int) int) Renderer {
+func NewLightRenderer(ttyin *os.File, theme *ColorTheme, forceBlack bool, mouse bool, tabstop int, clearOnExit bool, fullscreen bool, maxHeightFunc func(int) int) (Renderer, error) {
+	out, err := openTtyOut()
+	if err != nil {
+		out = os.Stderr
+	}
 	r := LightRenderer{
+		closed:        util.NewAtomicBool(false),
 		theme:         theme,
 		forceBlack:    forceBlack,
 		mouse:         mouse,
 		clearOnExit:   clearOnExit,
-		ttyin:         openTtyIn(),
+		ttyin:         ttyin,
+		ttyout:        out,
 		yoffset:       0,
 		tabstop:       tabstop,
 		fullscreen:    fullscreen,
 		upOneLine:     false,
 		maxHeightFunc: maxHeightFunc}
-	return &r
+	return &r, nil
 }
 
 func repeat(r rune, times int) string {
@@ -142,11 +163,11 @@ func atoi(s string, defaultValue int) int {
 	return value
 }
 
-func (r *LightRenderer) Init() {
+func (r *LightRenderer) Init() error {
 	r.escDelay = atoi(os.Getenv("ESCDELAY"), defaultEscDelay)
 
 	if err := r.initPlatform(); err != nil {
-		errorExit(err.Error())
+		return err
 	}
 	r.updateTerminalSize()
 	initTheme(r.theme, r.defaultTheme(), r.forceBlack)
@@ -174,10 +195,7 @@ func (r *LightRenderer) Init() {
 		}
 	}
 
-	if r.mouse {
+	r.enableMouse()
-		r.csi("?1000h")
-		r.csi("?1006h")
-	}
 	r.csi(fmt.Sprintf("%dA", r.MaxY()-1))
 	r.csi("G")
 	r.csi("K")
@@ -187,6 +205,11 @@ func (r *LightRenderer) Init() {
 	if !r.fullscreen && r.mouse {
 		r.yoffset, _ = r.findOffset()
 	}
+	return nil
+}
+
+func (r *LightRenderer) Resize(maxHeightFunc func(int) int) {
+	r.maxHeightFunc = maxHeightFunc
 }
 
 func (r *LightRenderer) makeSpace() {
@@ -221,19 +244,20 @@ func getEnv(name string, defaultValue int) int {
 	return atoi(env, defaultValue)
 }
 
-func (r *LightRenderer) getBytes() []byte {
+func (r *LightRenderer) getBytes() ([]byte, error) {
-	return r.getBytesInternal(r.buffer, false)
+	bytes, err := r.getBytesInternal(r.buffer, false)
+	return bytes, err
 }
 
-func (r *LightRenderer) getBytesInternal(buffer []byte, nonblock bool) []byte {
+func (r *LightRenderer) getBytesInternal(buffer []byte, nonblock bool) ([]byte, error) {
 	c, ok := r.getch(nonblock)
 	if !nonblock && !ok {
 		r.Close()
-		errorExit("Failed to read " + consoleDevice)
+		return nil, errors.New("failed to read " + consoleDevice)
 	}
 
 	retries := 0
-	if c == ESC.Int() || nonblock {
+	if c == Esc.Int() || nonblock {
 		retries = r.escDelay / escPollInterval
 	}
 	buffer = append(buffer, byte(c))
@@ -248,7 +272,7 @@ func (r *LightRenderer) getBytesInternal(buffer []byte, nonblock bool) []byte {
 				continue
 			}
 			break
-		} else if c == ESC.Int() && pc != c {
+		} else if c == Esc.Int() && pc != c {
 			retries = r.escDelay / escPollInterval
 		} else {
 			retries = 0
@@ -260,19 +284,23 @@ func (r *LightRenderer) getBytesInternal(buffer []byte, nonblock bool) []byte {
 		// so terminate fzf immediately.
 		if len(buffer) > maxInputBuffer {
 			r.Close()
-			panic(fmt.Sprintf("Input buffer overflow (%d): %v", len(buffer), buffer))
+			return nil, fmt.Errorf("input buffer overflow (%d): %v", len(buffer), buffer)
 		}
 	}
 
-	return buffer
+	return buffer, nil
 }
 
 func (r *LightRenderer) GetChar() Event {
+	var err error
 	if len(r.buffer) == 0 {
-		r.buffer = r.getBytes()
+		r.buffer, err = r.getBytes()
+		if err != nil {
+			return Event{Fatal, 0, nil}
+		}
 	}
 	if len(r.buffer) == 0 {
-		panic("Empty buffer")
+		return Event{Fatal, 0, nil}
 	}
 
 	sz := 1
@@ -288,7 +316,7 @@ func (r *LightRenderer) GetChar() Event {
 	case CtrlQ.Byte():
 		return Event{CtrlQ, 0, nil}
 	case 127:
-		return Event{BSpace, 0, nil}
+		return Event{Backspace, 0, nil}
 	case 0:
 		return Event{CtrlSpace, 0, nil}
 	case 28:
@@ -299,11 +327,13 @@ func (r *LightRenderer) GetChar() Event {
 		return Event{CtrlCaret, 0, nil}
 	case 31:
 		return Event{CtrlSlash, 0, nil}
-	case ESC.Byte():
+	case Esc.Byte():
 		ev := r.escSequence(&sz)
 		// Second chance
 		if ev.Type == Invalid {
-			r.buffer = r.getBytes()
+			if r.buffer, err = r.getBytes(); err != nil {
+				return Event{Fatal, 0, nil}
+			}
 			ev = r.escSequence(&sz)
 		}
 		return ev
@@ -315,7 +345,7 @@ func (r *LightRenderer) GetChar() Event {
 	}
 	char, rsz := utf8.DecodeRune(r.buffer)
 	if char == utf8.RuneError {
-		return Event{ESC, 0, nil}
+		return Event{Esc, 0, nil}
 	}
 	sz = rsz
 	return Event{Rune, char, nil}
@@ -323,7 +353,7 @@ func (r *LightRenderer) GetChar() Event {
 
 func (r *LightRenderer) escSequence(sz *int) Event {
 	if len(r.buffer) < 2 {
-		return Event{ESC, 0, nil}
+		return Event{Esc, 0, nil}
 	}
 
 	loc := offsetRegexpBegin.FindIndex(r.buffer)
@@ -337,15 +367,15 @@ func (r *LightRenderer) escSequence(sz *int) Event {
 		return CtrlAltKey(rune(r.buffer[1] + 'a' - 1))
 	}
 	alt := false
-	if len(r.buffer) > 2 && r.buffer[1] == ESC.Byte() {
+	if len(r.buffer) > 2 && r.buffer[1] == Esc.Byte() {
 		r.buffer = r.buffer[1:]
 		alt = true
 	}
 	switch r.buffer[1] {
-	case ESC.Byte():
+	case Esc.Byte():
-		return Event{ESC, 0, nil}
+		return Event{Esc, 0, nil}
 	case 127:
-		return Event{AltBS, 0, nil}
+		return Event{AltBackspace, 0, nil}
 	case '[', 'O':
 		if len(r.buffer) < 3 {
 			return Event{Invalid, 0, nil}
@@ -374,7 +404,7 @@ func (r *LightRenderer) escSequence(sz *int) Event {
 			}
 			return Event{Up, 0, nil}
 		case 'Z':
-			return Event{BTab, 0, nil}
+			return Event{ShiftTab, 0, nil}
 		case 'H':
 			return Event{Home, 0, nil}
 		case 'F':
@@ -389,7 +419,7 @@ func (r *LightRenderer) escSequence(sz *int) Event {
 			return Event{F3, 0, nil}
 		case 'S':
 			return Event{F4, 0, nil}
-		case '1', '2', '3', '4', '5', '6':
+		case '1', '2', '3', '4', '5', '6', '7', '8':
 			if len(r.buffer) < 4 {
 				return Event{Invalid, 0, nil}
 			}
@@ -421,13 +451,29 @@ func (r *LightRenderer) escSequence(sz *int) Event {
 				}
 				return Event{Invalid, 0, nil} // INS
 			case '3':
-				return Event{Del, 0, nil}
+				if r.buffer[3] == '~' {
+					return Event{Delete, 0, nil}
+				}
+				if len(r.buffer) == 6 && r.buffer[5] == '~' {
+					*sz = 6
+					switch r.buffer[4] {
+					case '5':
+						return Event{CtrlDelete, 0, nil}
+					case '2':
+						return Event{ShiftDelete, 0, nil}
+					}
+				}
+				return Event{Invalid, 0, nil}
 			case '4':
 				return Event{End, 0, nil}
 			case '5':
-				return Event{PgUp, 0, nil}
+				return Event{PageUp, 0, nil}
 			case '6':
-				return Event{PgDn, 0, nil}
+				return Event{PageDown, 0, nil}
+			case '7':
+				return Event{Home, 0, nil}
+			case '8':
+				return Event{End, 0, nil}
 			case '1':
 				switch r.buffer[3] {
 				case '~':
@@ -461,16 +507,29 @@ func (r *LightRenderer) escSequence(sz *int) Event {
 					}
 					*sz = 6
 					switch r.buffer[4] {
-					case '1', '2', '3', '5':
+					case '1', '2', '3', '4', '5':
+						//                   Kitty      iTerm2     WezTerm
+						// SHIFT-ARROW       "\e[1;2D"
+						// ALT-SHIFT-ARROW   "\e[1;4D"  "\e[1;10D" "\e[1;4D"
+						// CTRL-SHIFT-ARROW  "\e[1;6D"             N/A
+						// CMD-SHIFT-ARROW   "\e[1;10D" N/A        N/A ("\e[1;2D")
 						alt := r.buffer[4] == '3'
-						altShift := r.buffer[4] == '1' && r.buffer[5] == '0'
 						char := r.buffer[5]
-						if altShift {
+						altShift := false
+						if r.buffer[4] == '1' && r.buffer[5] == '0' {
+							altShift = true
 							if len(r.buffer) < 7 {
 								return Event{Invalid, 0, nil}
 							}
 							*sz = 7
 							char = r.buffer[6]
+						} else if r.buffer[4] == '4' {
+							altShift = true
+							if len(r.buffer) < 6 {
+								return Event{Invalid, 0, nil}
+							}
+							*sz = 6
+							char = r.buffer[5]
 						}
 						switch char {
 						case 'A':
@@ -478,33 +537,33 @@ func (r *LightRenderer) escSequence(sz *int) Event {
 								return Event{AltUp, 0, nil}
 							}
 							if altShift {
-								return Event{AltSUp, 0, nil}
+								return Event{AltShiftUp, 0, nil}
 							}
-							return Event{SUp, 0, nil}
+							return Event{ShiftUp, 0, nil}
 						case 'B':
 							if alt {
 								return Event{AltDown, 0, nil}
 							}
 							if altShift {
-								return Event{AltSDown, 0, nil}
+								return Event{AltShiftDown, 0, nil}
 							}
-							return Event{SDown, 0, nil}
+							return Event{ShiftDown, 0, nil}
 						case 'C':
 							if alt {
 								return Event{AltRight, 0, nil}
 							}
 							if altShift {
-								return Event{AltSRight, 0, nil}
+								return Event{AltShiftRight, 0, nil}
 							}
-							return Event{SRight, 0, nil}
+							return Event{ShiftRight, 0, nil}
 						case 'D':
 							if alt {
 								return Event{AltLeft, 0, nil}
 							}
 							if altShift {
-								return Event{AltSLeft, 0, nil}
+								return Event{AltShiftLeft, 0, nil}
 							}
-							return Event{SLeft, 0, nil}
+							return Event{ShiftLeft, 0, nil}
 						}
 					} // r.buffer[4]
 				} // r.buffer[3]
@@ -540,8 +599,8 @@ func (r *LightRenderer) mouseSequence(sz *int) Event {
 
 	t := atoi(elems[0], -1)
 	x := atoi(elems[1], -1) - 1
-	y := atoi(elems[2], -1) - 1
+	y := atoi(elems[2], -1) - 1 - r.yoffset
-	if t < 0 || x < 0 || y < 0 {
+	if t < 0 || x < 0 {
 		return Event{Invalid, 0, nil}
 	}
 	*sz += end + 1
@@ -565,25 +624,31 @@ func (r *LightRenderer) mouseSequence(sz *int) Event {
 	// ctrl := t & 0b1000
 	mod := t&0b1100 > 0
 
+	drag := t&0b100000 > 0
+
 	if scroll != 0 {
 		return Event{Mouse, 0, &MouseEvent{y, x, scroll, false, false, false, mod}}
 	}
 
 	double := false
-	if down {
+	if down && !drag {
 		now := time.Now()
 		if !left { // Right double click is not allowed
-			r.clickY = []int{}
+			r.clicks = [][2]int{}
 		} else if now.Sub(r.prevDownTime) < doubleClickDuration {
-			r.clickY = append(r.clickY, y)
+			r.clicks = append(r.clicks, [2]int{x, y})
 		} else {
-			r.clickY = []int{y}
+			r.clicks = [][2]int{{x, y}}
 		}
 		r.prevDownTime = now
 	} else {
-		if len(r.clickY) > 1 && r.clickY[0] == r.clickY[1] &&
+		n := len(r.clicks)
+		if len(r.clicks) > 1 && r.clicks[n-2][0] == r.clicks[n-1][0] && r.clicks[n-2][1] == r.clicks[n-1][1] &&
 			time.Since(r.prevDownTime) < doubleClickDuration {
 			double = true
+			if double {
+				r.clicks = [][2]int{}
+			}
 		}
 	}
 	return Event{Mouse, 0, &MouseEvent{y, x, 0, left, down, double, mod}}
@@ -598,6 +663,7 @@ func (r *LightRenderer) rmcup() {
 }
 
 func (r *LightRenderer) Pause(clear bool) {
+	r.disableMouse()
 	r.restoreTerminal()
 	if clear {
 		if r.fullscreen {
@@ -610,6 +676,22 @@ func (r *LightRenderer) Pause(clear bool) {
 	}
 }
 
+func (r *LightRenderer) enableMouse() {
+	if r.mouse {
+		r.csi("?1000h")
+		r.csi("?1002h")
+		r.csi("?1006h")
+	}
+}
+
+func (r *LightRenderer) disableMouse() {
+	if r.mouse {
+		r.csi("?1000l")
+		r.csi("?1002l")
+		r.csi("?1006l")
+	}
+}
+
 func (r *LightRenderer) Resume(clear bool, sigcont bool) {
 	r.setupTerminal()
 	if clear {
@@ -618,13 +700,13 @@ func (r *LightRenderer) Resume(clear bool, sigcont bool) {
 		} else {
 			r.rmcup()
 		}
+		r.enableMouse()
 		r.flush()
 	} else if sigcont && !r.fullscreen && r.mouse {
 		// NOTE: SIGCONT (Coming back from CTRL-Z):
 		// It's highly likely that the offset we obtained at the beginning is
 		// no longer correct, so we simply disable mouse input.
-		r.csi("?1000l")
+		r.disableMouse()
-		r.csi("?1006l")
 		r.mouse = false
 	}
 }
@@ -639,6 +721,14 @@ func (r *LightRenderer) Clear() {
 	r.flush()
 }
 
+func (r *LightRenderer) NeedScrollbarRedraw() bool {
+	return false
+}
+
+func (r *LightRenderer) ShouldEmitResizeEvent() bool {
+	return false
+}
+
 func (r *LightRenderer) RefreshWindows(windows []Window) {
 	r.flush()
 }
@@ -662,13 +752,15 @@ func (r *LightRenderer) Close() {
 	} else if !r.fullscreen {
 		r.csi("u")
 	}
-	if r.mouse {
+	r.disableMouse()
-		r.csi("?1000l")
-		r.csi("?1006l")
-	}
 	r.flush()
 	r.closePlatform()
 	r.restoreTerminal()
+	r.closed.Set(true)
+}
+
+func (r *LightRenderer) Top() int {
+	return r.yoffset
 }
 
 func (r *LightRenderer) MaxX() int {
@@ -676,6 +768,9 @@ func (r *LightRenderer) MaxX() int {
 }
 
 func (r *LightRenderer) MaxY() int {
+	if r.height == 0 {
+		r.updateTerminalSize()
+	}
 	return r.height
 }
 
@@ -699,25 +794,45 @@ func (r *LightRenderer) NewWindow(top int, left int, width int, height int, prev
 		w.fg = r.theme.Fg.Color
 		w.bg = r.theme.Bg.Color
 	}
-	w.drawBorder()
+	if !w.bg.IsDefault() && w.border.shape != BorderNone {
+		w.Erase()
+	}
+	w.drawBorder(false)
 	return w
 }
 
-func (w *LightWindow) drawBorder() {
+func (w *LightWindow) DrawBorder() {
+	w.drawBorder(false)
+}
+
+func (w *LightWindow) DrawHBorder() {
+	w.drawBorder(true)
+}
+
+func (w *LightWindow) drawBorder(onlyHorizontal bool) {
 	switch w.border.shape {
-	case BorderRounded, BorderSharp:
+	case BorderRounded, BorderSharp, BorderBold, BorderBlock, BorderThinBlock, BorderDouble:
-		w.drawBorderAround()
+		w.drawBorderAround(onlyHorizontal)
 	case BorderHorizontal:
 		w.drawBorderHorizontal(true, true)
 	case BorderVertical:
+		if onlyHorizontal {
+			return
+		}
 		w.drawBorderVertical(true, true)
 	case BorderTop:
 		w.drawBorderHorizontal(true, false)
 	case BorderBottom:
 		w.drawBorderHorizontal(false, true)
 	case BorderLeft:
+		if onlyHorizontal {
+			return
+		}
 		w.drawBorderVertical(true, false)
 	case BorderRight:
+		if onlyHorizontal {
+			return
+		}
 		w.drawBorderVertical(false, true)
 	}
 }
@@ -727,60 +842,72 @@ func (w *LightWindow) drawBorderHorizontal(top, bottom bool) {
 	if w.preview {
 		color = ColPreviewBorder
 	}
+	hw := runeWidth(w.border.top)
 	if top {
 		w.Move(0, 0)
-		w.CPrint(color, repeat(w.border.horizontal, w.width))
+		w.CPrint(color, repeat(w.border.top, w.width/hw))
 	}
+
 	if bottom {
 		w.Move(w.height-1, 0)
-		w.CPrint(color, repeat(w.border.horizontal, w.width))
+		w.CPrint(color, repeat(w.border.bottom, w.width/hw))
 	}
 }
 
 func (w *LightWindow) drawBorderVertical(left, right bool) {
-	width := w.width - 2
+	vw := runeWidth(w.border.left)
-	if !left || !right {
-		width++
-	}
 	color := ColBorder
 	if w.preview {
 		color = ColPreviewBorder
 	}
 	for y := 0; y < w.height; y++ {
-		w.Move(y, 0)
 		if left {
-			w.CPrint(color, string(w.border.vertical))
+			w.Move(y, 0)
+			w.CPrint(color, string(w.border.left))
+			w.CPrint(color, " ") // Margin
 		}
-		w.CPrint(color, repeat(' ', width))
 		if right {
-			w.CPrint(color, string(w.border.vertical))
+			w.Move(y, w.width-vw-1)
+			w.CPrint(color, " ") // Margin
+			w.CPrint(color, string(w.border.right))
 		}
 	}
 }
 
-func (w *LightWindow) drawBorderAround() {
+func (w *LightWindow) drawBorderAround(onlyHorizontal bool) {
 	w.Move(0, 0)
 	color := ColBorder
 	if w.preview {
 		color = ColPreviewBorder
 	}
-	w.CPrint(color, string(w.border.topLeft)+repeat(w.border.horizontal, w.width-2)+string(w.border.topRight))
+	hw := runeWidth(w.border.top)
-	for y := 1; y < w.height-1; y++ {
+	tcw := runeWidth(w.border.topLeft) + runeWidth(w.border.topRight)
-		w.Move(y, 0)
+	bcw := runeWidth(w.border.bottomLeft) + runeWidth(w.border.bottomRight)
-		w.CPrint(color, string(w.border.vertical))
+	rem := (w.width - tcw) % hw
-		w.CPrint(color, repeat(' ', w.width-2))
+	w.CPrint(color, string(w.border.topLeft)+repeat(w.border.top, (w.width-tcw)/hw)+repeat(' ', rem)+string(w.border.topRight))
-		w.CPrint(color, string(w.border.vertical))
+	if !onlyHorizontal {
+		vw := runeWidth(w.border.left)
+		for y := 1; y < w.height-1; y++ {
+			w.Move(y, 0)
+			w.CPrint(color, string(w.border.left))
+			w.CPrint(color, " ") // Margin
+
+			w.Move(y, w.width-vw-1)
+			w.CPrint(color, " ") // Margin
+			w.CPrint(color, string(w.border.right))
+		}
 	}
 	w.Move(w.height-1, 0)
-	w.CPrint(color, string(w.border.bottomLeft)+repeat(w.border.horizontal, w.width-2)+string(w.border.bottomRight))
+	rem = (w.width - bcw) % hw
+	w.CPrint(color, string(w.border.bottomLeft)+repeat(w.border.bottom, (w.width-bcw)/hw)+repeat(' ', rem)+string(w.border.bottomRight))
 }
 
-func (w *LightWindow) csi(code string) {
+func (w *LightWindow) csi(code string) string {
-	w.renderer.csi(code)
+	return w.renderer.csi(code)
 }
 
-func (w *LightWindow) stderrInternal(str string, allowNLCR bool) {
+func (w *LightWindow) stderrInternal(str string, allowNLCR bool, resetCode string) {
-	w.renderer.stderrInternal(str, allowNLCR)
+	w.renderer.stderrInternal(str, allowNLCR, resetCode)
 }
 
 func (w *LightWindow) Top() int {
@@ -856,6 +983,9 @@ func attrCodes(attr Attr) []string {
 	if (attr & Reverse) > 0 {
 		codes = append(codes, "7")
 	}
+	if (attr & StrikeThrough) > 0 {
+		codes = append(codes, "9")
+	}
 	return codes
 }
 
@@ -883,10 +1013,10 @@ func colorCodes(fg Color, bg Color) []string {
 	return codes
 }
 
-func (w *LightWindow) csiColor(fg Color, bg Color, attr Attr) bool {
+func (w *LightWindow) csiColor(fg Color, bg Color, attr Attr) (bool, string) {
 	codes := append(attrCodes(attr), colorCodes(fg, bg)...)
-	w.csi(";" + strings.Join(codes, ";") + "m")
+	code := w.csi(";" + strings.Join(codes, ";") + "m")
-	return len(codes) > 0
+	return len(codes) > 0, code
 }
 
 func (w *LightWindow) Print(text string) {
@@ -894,20 +1024,21 @@ func (w *LightWindow) Print(text string) {
 }
 
 func cleanse(str string) string {
-	return strings.Replace(str, "\x1b", "", -1)
+	return strings.ReplaceAll(str, "\x1b", "")
 }
 
 func (w *LightWindow) CPrint(pair ColorPair, text string) {
-	w.csiColor(pair.Fg(), pair.Bg(), pair.Attr())
+	_, code := w.csiColor(pair.Fg(), pair.Bg(), pair.Attr())
-	w.stderrInternal(cleanse(text), false)
+	w.stderrInternal(cleanse(text), false, code)
-	w.csi("m")
+	w.csi("0m")
 }
 
 func (w *LightWindow) cprint2(fg Color, bg Color, attr Attr, text string) {
-	if w.csiColor(fg, bg, attr) {
+	hasColors, code := w.csiColor(fg, bg, attr)
-		defer w.csi("m")
+	if hasColors {
+		defer w.csi("0m")
 	}
-	w.stderrInternal(cleanse(text), false)
+	w.stderrInternal(cleanse(text), false, code)
 }
 
 type wrappedLine struct {
@@ -927,8 +1058,10 @@ func wrapLine(input string, prefixLength int, max int, tabstop int) []wrappedLin
 		if len(rs) == 1 && rs[0] == '\t' {
 			w = tabstop - (prefixLength+width)%tabstop
 			str = repeat(' ', w)
+		} else if rs[0] == '\r' {
+			w++
 		} else {
-			w = runewidth.StringWidth(str)
+			w = uniseg.StringWidth(str)
 		}
 		width += w
 
@@ -945,12 +1078,12 @@ func wrapLine(input string, prefixLength int, max int, tabstop int) []wrappedLin
 	return lines
 }
 
-func (w *LightWindow) fill(str string, onMove func()) FillReturn {
+func (w *LightWindow) fill(str string, resetCode string) FillReturn {
 	allLines := strings.Split(str, "\n")
 	for i, line := range allLines {
 		lines := wrapLine(line, w.posx, w.width, w.tabstop)
 		for j, wl := range lines {
-			w.stderrInternal(wl.text, false)
+			w.stderrInternal(wl.text, false, resetCode)
 			w.posx += wl.displayWidth
 
 			// Wrap line
@@ -960,7 +1093,7 @@ func (w *LightWindow) fill(str string, onMove func()) FillReturn {
 				}
 				w.MoveAndClear(w.posy, w.posx)
 				w.Move(w.posy+1, 0)
-				onMove()
+				w.renderer.stderr(resetCode)
 			}
 		}
 	}
@@ -969,22 +1102,34 @@ func (w *LightWindow) fill(str string, onMove func()) FillReturn {
 			return FillSuspend
 		}
 		w.Move(w.posy+1, 0)
-		onMove()
+		w.renderer.stderr(resetCode)
 		return FillNextLine
 	}
 	return FillContinue
 }
 
-func (w *LightWindow) setBg() {
+func (w *LightWindow) setBg() string {
 	if w.bg != colDefault {
-		w.csiColor(colDefault, w.bg, AttrRegular)
+		_, code := w.csiColor(colDefault, w.bg, AttrRegular)
+		return code
 	}
+	// Should clear dim attribute after ␍ in the preview window
+	// e.g. printf "foo\rbar" | fzf --ansi --preview 'printf "foo\rbar"'
+	return "\x1b[m"
+}
+
+func (w *LightWindow) LinkBegin(uri string, params string) {
+	w.renderer.queued.WriteString("\x1b]8;" + params + ";" + uri + "\x1b\\")
+}
+
+func (w *LightWindow) LinkEnd() {
+	w.renderer.queued.WriteString("\x1b]8;;\x1b\\")
 }
 
 func (w *LightWindow) Fill(text string) FillReturn {
 	w.Move(w.posy, w.posx)
-	w.setBg()
+	code := w.setBg()
-	return w.fill(text, w.setBg)
+	return w.fill(text, code)
 }
 
 func (w *LightWindow) CFill(fg Color, bg Color, attr Attr, text string) FillReturn {
@@ -995,22 +1140,29 @@ func (w *LightWindow) CFill(fg Color, bg Color, attr Attr, text string) FillRetu
 	if bg == colDefault {
 		bg = w.bg
 	}
-	if w.csiColor(fg, bg, attr) {
+	if hasColors, resetCode := w.csiColor(fg, bg, attr); hasColors {
-		defer w.csi("m")
+		defer w.csi("0m")
-		return w.fill(text, func() { w.csiColor(fg, bg, attr) })
+		return w.fill(text, resetCode)
 	}
-	return w.fill(text, w.setBg)
+	return w.fill(text, w.setBg())
 }
 
 func (w *LightWindow) FinishFill() {
-	w.MoveAndClear(w.posy, w.posx)
+	if w.posy < w.height {
+		w.MoveAndClear(w.posy, w.posx)
+	}
 	for y := w.posy + 1; y < w.height; y++ {
 		w.MoveAndClear(y, 0)
 	}
 }
 
 func (w *LightWindow) Erase() {
-	w.drawBorder()
+	w.DrawBorder()
-	// We don't erase the window here to avoid flickering during scroll
+	w.Move(0, 0)
+	w.FinishFill()
 	w.Move(0, 0)
 }
+
+func (w *LightWindow) EraseMaybe() bool {
+	return false
+}

src/tui/light_unix.go

@@ -3,13 +3,14 @@
 package tui
 
 import (
-	"fmt"
+	"errors"
 	"os"
 	"os/exec"
 	"strings"
 	"syscall"
 
 	"github.com/junegunn/fzf/src/util"
+	"golang.org/x/sys/unix"
 	"golang.org/x/term"
 )
 
@@ -32,34 +33,35 @@ func (r *LightRenderer) fd() int {
 	return int(r.ttyin.Fd())
 }
 
-func (r *LightRenderer) initPlatform() error {
+func (r *LightRenderer) initPlatform() (err error) {
-	fd := r.fd()
+	r.origState, err = term.MakeRaw(r.fd())
-	origState, err := term.GetState(fd)
+	return err
-	if err != nil {
-		return err
-	}
-	r.origState = origState
-	term.MakeRaw(fd)
-	return nil
 }
 
 func (r *LightRenderer) closePlatform() {
-	// NOOP
+	r.ttyout.Close()
 }
 
-func openTtyIn() *os.File {
+func openTty(mode int) (*os.File, error) {
-	in, err := os.OpenFile(consoleDevice, syscall.O_RDONLY, 0)
+	in, err := os.OpenFile(consoleDevice, mode, 0)
 	if err != nil {
 		tty := ttyname()
 		if len(tty) > 0 {
-			if in, err := os.OpenFile(tty, syscall.O_RDONLY, 0); err == nil {
+			if in, err := os.OpenFile(tty, mode, 0); err == nil {
-				return in
+				return in, nil
 			}
 		}
-		fmt.Fprintln(os.Stderr, "Failed to open "+consoleDevice)
+		return nil, errors.New("failed to open " + consoleDevice)
-		os.Exit(2)
 	}
-	return in
+	return in, nil
+}
+
+func openTtyIn() (*os.File, error) {
+	return openTty(syscall.O_RDONLY)
+}
+
+func openTtyOut() (*os.File, error) {
+	return openTty(syscall.O_WRONLY)
 }
 
 func (r *LightRenderer) setupTerminal() {
@@ -85,9 +87,14 @@ func (r *LightRenderer) updateTerminalSize() {
 func (r *LightRenderer) findOffset() (row int, col int) {
 	r.csi("6n")
 	r.flush()
+	var err error
 	bytes := []byte{}
 	for tries := 0; tries < offsetPollTries; tries++ {
-		bytes = r.getBytesInternal(bytes, tries > 0)
+		bytes, err = r.getBytesInternal(bytes, tries > 0)
+		if err != nil {
+			return -1, -1
+		}
+
 		offsets := offsetRegexp.FindSubmatch(bytes)
 		if len(offsets) > 3 {
 			// Add anything we skipped over to the input buffer
@@ -108,3 +115,11 @@ func (r *LightRenderer) getch(nonblock bool) (int, bool) {
 	}
 	return int(b[0]), true
 }
+
+func (r *LightRenderer) Size() TermSize {
+	ws, err := unix.IoctlGetWinsize(int(r.ttyin.Fd()), unix.TIOCGWINSZ)
+	if err != nil {
+		return TermSize{}
+	}
+	return TermSize{int(ws.Row), int(ws.Col), int(ws.Xpixel), int(ws.Ypixel)}
+}

src/tui/light_windows.go

@@ -72,7 +72,7 @@ func (r *LightRenderer) initPlatform() error {
 	go func() {
 		fd := int(r.inHandle)
 		b := make([]byte, 1)
-		for {
+		for !r.closed.Get() {
 			// HACK: if run from PSReadline, something resets ConsoleMode to remove ENABLE_VIRTUAL_TERMINAL_INPUT.
 			_ = windows.SetConsoleMode(windows.Handle(r.inHandle), consoleFlagsInput)
 
@@ -91,9 +91,13 @@ func (r *LightRenderer) closePlatform() {
 	windows.SetConsoleMode(windows.Handle(r.inHandle), r.origStateInput)
 }
 
-func openTtyIn() *os.File {
+func openTtyIn() (*os.File, error) {
 	// not used
-	return nil
+	return nil, nil
+}
+
+func openTtyOut() (*os.File, error) {
+	return os.Stderr, nil
 }
 
 func (r *LightRenderer) setupTerminal() error {
@@ -110,16 +114,24 @@ func (r *LightRenderer) restoreTerminal() error {
 	return windows.SetConsoleMode(windows.Handle(r.outHandle), r.origStateOutput)
 }
 
-func (r *LightRenderer) updateTerminalSize() {
+func (r *LightRenderer) Size() TermSize {
+	var w, h int
 	var bufferInfo windows.ConsoleScreenBufferInfo
 	if err := windows.GetConsoleScreenBufferInfo(windows.Handle(r.outHandle), &bufferInfo); err != nil {
-		r.width = getEnv("COLUMNS", defaultWidth)
+		w = getEnv("COLUMNS", defaultWidth)
-		r.height = r.maxHeightFunc(getEnv("LINES", defaultHeight))
+		h = r.maxHeightFunc(getEnv("LINES", defaultHeight))
 
 	} else {
-		r.width = int(bufferInfo.Window.Right - bufferInfo.Window.Left)
+		w = int(bufferInfo.Window.Right - bufferInfo.Window.Left)
-		r.height = r.maxHeightFunc(int(bufferInfo.Window.Bottom - bufferInfo.Window.Top))
+		h = r.maxHeightFunc(int(bufferInfo.Window.Bottom - bufferInfo.Window.Top))
 	}
+	return TermSize{h, w, 0, 0}
+}
+
+func (r *LightRenderer) updateTerminalSize() {
+	size := r.Size()
+	r.width = size.Columns
+	r.height = size.Lines
 }
 
 func (r *LightRenderer) findOffset() (row int, col int) {
@@ -127,7 +139,7 @@ func (r *LightRenderer) findOffset() (row int, col int) {
 	if err := windows.GetConsoleScreenBufferInfo(windows.Handle(r.outHandle), &bufferInfo); err != nil {
 		return -1, -1
 	}
-	return int(bufferInfo.CursorPosition.X), int(bufferInfo.CursorPosition.Y)
+	return int(bufferInfo.CursorPosition.Y), int(bufferInfo.CursorPosition.X)
 }
 
 func (r *LightRenderer) getch(nonblock bool) (int, bool) {

src/tui/tcell.go

@@ -4,14 +4,12 @@ package tui
 
 import (
 	"os"
+	"regexp"
 	"time"
 
-	"runtime"
+	"github.com/gdamore/tcell/v2"
+	"github.com/junegunn/fzf/src/util"
 
-	"github.com/gdamore/tcell"
-	"github.com/gdamore/tcell/encoding"
-
-	"github.com/mattn/go-runewidth"
 	"github.com/rivo/uniseg"
 )
 
@@ -19,12 +17,26 @@ func HasFullscreenRenderer() bool {
 	return true
 }
 
-func (p ColorPair) style() tcell.Style {
+var DefaultBorderShape BorderShape = BorderSharp
-	style := tcell.StyleDefault
+
-	return style.Foreground(tcell.Color(p.Fg())).Background(tcell.Color(p.Bg()))
+func asTcellColor(color Color) tcell.Color {
+	if color == colDefault {
+		return tcell.ColorDefault
+	}
+
+	value := uint64(tcell.ColorValid) + uint64(color)
+	if color.is24() {
+		value = value | uint64(tcell.ColorIsRGB)
+	}
+	return tcell.Color(value)
 }
 
-type Attr tcell.Style
+func (p ColorPair) style() tcell.Style {
+	style := tcell.StyleDefault
+	return style.Foreground(asTcellColor(p.Fg())).Background(asTcellColor(p.Bg()))
+}
+
+type Attr int32
 
 type TcellWindow struct {
 	color       bool
@@ -38,6 +50,8 @@ type TcellWindow struct {
 	lastY       int
 	moveCursor  bool
 	borderStyle BorderStyle
+	uri         *string
+	params      *string
 }
 
 func (w *TcellWindow) Top() int {
@@ -63,8 +77,6 @@ func (w *TcellWindow) Refresh() {
 	}
 	w.lastX = 0
 	w.lastY = 0
-
-	w.drawBorder()
 }
 
 func (w *TcellWindow) FinishFill() {
@@ -72,12 +84,13 @@ func (w *TcellWindow) FinishFill() {
 }
 
 const (
-	Bold      Attr = Attr(tcell.AttrBold)
+	Bold          Attr = Attr(tcell.AttrBold)
-	Dim            = Attr(tcell.AttrDim)
+	Dim                = Attr(tcell.AttrDim)
-	Blink          = Attr(tcell.AttrBlink)
+	Blink              = Attr(tcell.AttrBlink)
-	Reverse        = Attr(tcell.AttrReverse)
+	Reverse            = Attr(tcell.AttrReverse)
-	Underline      = Attr(tcell.AttrUnderline)
+	Underline          = Attr(tcell.AttrUnderline)
-	Italic         = Attr(tcell.AttrItalic)
+	StrikeThrough      = Attr(tcell.AttrStrikeThrough)
+	Italic             = Attr(tcell.AttrItalic)
 )
 
 const (
@@ -86,6 +99,13 @@ const (
 	AttrClear     = Attr(1 << 8)
 )
 
+func (r *FullscreenRenderer) PassThrough(str string) {
+	// No-op
+	// https://github.com/gdamore/tcell/pull/650#issuecomment-1806442846
+}
+
+func (r *FullscreenRenderer) Resize(maxHeightFunc func(int) int) {}
+
 func (r *FullscreenRenderer) defaultTheme() *ColorTheme {
 	if _screen.Colors() >= 256 {
 		return Dark256
@@ -125,15 +145,16 @@ func (a Attr) Merge(b Attr) Attr {
 var (
 	_screen          tcell.Screen
 	_prevMouseButton tcell.ButtonMask
+	_initialResize   bool = true
 )
 
-func (r *FullscreenRenderer) initScreen() {
+func (r *FullscreenRenderer) initScreen() error {
 	s, e := tcell.NewScreen()
 	if e != nil {
-		errorExit(e.Error())
+		return e
 	}
 	if e = s.Init(); e != nil {
-		errorExit(e.Error())
+		return e
 	}
 	if r.mouse {
 		s.EnableMouse()
@@ -141,16 +162,25 @@ func (r *FullscreenRenderer) initScreen() {
 		s.DisableMouse()
 	}
 	_screen = s
+
+	return nil
 }
 
-func (r *FullscreenRenderer) Init() {
+func (r *FullscreenRenderer) Init() error {
 	if os.Getenv("TERM") == "cygwin" {
 		os.Setenv("TERM", "")
 	}
-	encoding.Register()
 
-	r.initScreen()
+	if err := r.initScreen(); err != nil {
+		return err
+	}
 	initTheme(r.theme, r.defaultTheme(), r.forceBlack)
+
+	return nil
+}
+
+func (r *FullscreenRenderer) Top() int {
+	return 0
 }
 
 func (r *FullscreenRenderer) MaxX() int {
@@ -176,14 +206,34 @@ func (r *FullscreenRenderer) Clear() {
 	_screen.Clear()
 }
 
+func (r *FullscreenRenderer) NeedScrollbarRedraw() bool {
+	return true
+}
+
+func (r *FullscreenRenderer) ShouldEmitResizeEvent() bool {
+	return true
+}
+
 func (r *FullscreenRenderer) Refresh() {
 	// noop
 }
 
+// TODO: Pixel width and height not implemented
+func (r *FullscreenRenderer) Size() TermSize {
+	cols, lines := _screen.Size()
+	return TermSize{lines, cols, 0, 0}
+}
+
 func (r *FullscreenRenderer) GetChar() Event {
 	ev := _screen.PollEvent()
 	switch ev := ev.(type) {
 	case *tcell.EventResize:
+		// Ignore the first resize event
+		// https://github.com/gdamore/tcell/blob/v2.7.0/TUTORIAL.md?plain=1#L18
+		if _initialResize {
+			_initialResize = false
+			return Event{Invalid, 0, nil}
+		}
 		return Event{Resize, 0, nil}
 
 	// process mouse events:
@@ -205,54 +255,38 @@ func (r *FullscreenRenderer) GetChar() Event {
 			return Event{Mouse, 0, &MouseEvent{y, x, -1, false, false, false, mod}}
 		case button&tcell.WheelUp != 0:
 			return Event{Mouse, 0, &MouseEvent{y, x, +1, false, false, false, mod}}
-		case button&tcell.Button1 != 0 && !drag:
+		case button&tcell.Button1 != 0:
-			// all potential double click events put their 'line' coordinate in the clickY array
+			double := false
-			// double click event has two conditions, temporal and spatial, the first is checked here
+			if !drag {
-			now := time.Now()
+				// all potential double click events put their coordinates in the clicks array
-			if now.Sub(r.prevDownTime) < doubleClickDuration {
+				// double click event has two conditions, temporal and spatial, the first is checked here
-				r.clickY = append(r.clickY, y)
+				now := time.Now()
-			} else {
+				if now.Sub(r.prevDownTime) < doubleClickDuration {
-				r.clickY = []int{y}
+					r.clicks = append(r.clicks, [2]int{x, y})
-			}
+				} else {
-			r.prevDownTime = now
+					r.clicks = [][2]int{{x, y}}
+				}
+				r.prevDownTime = now
 
-			// detect double clicks (also check for spatial condition)
+				// detect double clicks (also check for spatial condition)
-			n := len(r.clickY)
+				n := len(r.clicks)
-			double := n > 1 && r.clickY[n-2] == r.clickY[n-1]
+				double = n > 1 && r.clicks[n-2][0] == r.clicks[n-1][0] && r.clicks[n-2][1] == r.clicks[n-1][1]
-			if double {
+				if double {
-				// make sure two consecutive double clicks require four clicks
+					// make sure two consecutive double clicks require four clicks
-				r.clickY = []int{}
+					r.clicks = [][2]int{}
+				}
 			}
-
 			// fire single or double click event
 			return Event{Mouse, 0, &MouseEvent{y, x, 0, true, !double, double, mod}}
-		case button&tcell.Button2 != 0 && !drag:
+		case button&tcell.Button2 != 0:
 			return Event{Mouse, 0, &MouseEvent{y, x, 0, false, true, false, mod}}
-		case runtime.GOOS != "windows":
+		default:
-
 			// double and single taps on Windows don't quite work due to
 			// the console acting on the events and not allowing us
 			// to consume them.
-
 			left := button&tcell.Button1 != 0
 			down := left || button&tcell.Button3 != 0
 			double := false
-			if down {
-				now := time.Now()
-				if !left {
-					r.clickY = []int{}
-				} else if now.Sub(r.prevDownTime) < doubleClickDuration {
-					r.clickY = append(r.clickY, x)
-				} else {
-					r.clickY = []int{x}
-					r.prevDownTime = now
-				}
-			} else {
-				if len(r.clickY) > 1 && r.clickY[0] == r.clickY[1] &&
-					time.Now().Sub(r.prevDownTime) < doubleClickDuration {
-					double = true
-				}
-			}
 
 			return Event{Mouse, 0, &MouseEvent{y, x, 0, left, down, double, mod}}
 		}
@@ -293,16 +327,16 @@ func (r *FullscreenRenderer) GetChar() Event {
 			switch ev.Rune() {
 			case 0:
 				if ctrl {
-					return Event{BSpace, 0, nil}
+					return Event{Backspace, 0, nil}
 				}
 			case rune(tcell.KeyCtrlH):
 				switch {
 				case ctrl:
 					return keyfn('h')
 				case alt:
-					return Event{AltBS, 0, nil}
+					return Event{AltBackspace, 0, nil}
 				case none, shift:
-					return Event{BSpace, 0, nil}
+					return Event{Backspace, 0, nil}
 				}
 			}
 		case tcell.KeyCtrlI:
@@ -355,17 +389,17 @@ func (r *FullscreenRenderer) GetChar() Event {
 		// section 3: (Alt)+Backspace2
 		case tcell.KeyBackspace2:
 			if alt {
-				return Event{AltBS, 0, nil}
+				return Event{AltBackspace, 0, nil}
 			}
-			return Event{BSpace, 0, nil}
+			return Event{Backspace, 0, nil}
 
 		// section 4: (Alt+Shift)+Key(Up|Down|Left|Right)
 		case tcell.KeyUp:
 			if altShift {
-				return Event{AltSUp, 0, nil}
+				return Event{AltShiftUp, 0, nil}
 			}
 			if shift {
-				return Event{SUp, 0, nil}
+				return Event{ShiftUp, 0, nil}
 			}
 			if alt {
 				return Event{AltUp, 0, nil}
@@ -373,10 +407,10 @@ func (r *FullscreenRenderer) GetChar() Event {
 			return Event{Up, 0, nil}
 		case tcell.KeyDown:
 			if altShift {
-				return Event{AltSDown, 0, nil}
+				return Event{AltShiftDown, 0, nil}
 			}
 			if shift {
-				return Event{SDown, 0, nil}
+				return Event{ShiftDown, 0, nil}
 			}
 			if alt {
 				return Event{AltDown, 0, nil}
@@ -384,10 +418,10 @@ func (r *FullscreenRenderer) GetChar() Event {
 			return Event{Down, 0, nil}
 		case tcell.KeyLeft:
 			if altShift {
-				return Event{AltSLeft, 0, nil}
+				return Event{AltShiftLeft, 0, nil}
 			}
 			if shift {
-				return Event{SLeft, 0, nil}
+				return Event{ShiftLeft, 0, nil}
 			}
 			if alt {
 				return Event{AltLeft, 0, nil}
@@ -395,10 +429,10 @@ func (r *FullscreenRenderer) GetChar() Event {
 			return Event{Left, 0, nil}
 		case tcell.KeyRight:
 			if altShift {
-				return Event{AltSRight, 0, nil}
+				return Event{AltShiftRight, 0, nil}
 			}
 			if shift {
-				return Event{SRight, 0, nil}
+				return Event{ShiftRight, 0, nil}
 			}
 			if alt {
 				return Event{AltRight, 0, nil}
@@ -411,15 +445,21 @@ func (r *FullscreenRenderer) GetChar() Event {
 		case tcell.KeyHome:
 			return Event{Home, 0, nil}
 		case tcell.KeyDelete:
-			return Event{Del, 0, nil}
+			if ctrl {
+				return Event{CtrlDelete, 0, nil}
+			}
+			if shift {
+				return Event{ShiftDelete, 0, nil}
+			}
+			return Event{Delete, 0, nil}
 		case tcell.KeyEnd:
 			return Event{End, 0, nil}
 		case tcell.KeyPgUp:
-			return Event{PgUp, 0, nil}
+			return Event{PageUp, 0, nil}
 		case tcell.KeyPgDn:
-			return Event{PgDn, 0, nil}
+			return Event{PageDown, 0, nil}
 		case tcell.KeyBacktab:
-			return Event{BTab, 0, nil}
+			return Event{ShiftTab, 0, nil}
 		case tcell.KeyF1:
 			return Event{F1, 0, nil}
 		case tcell.KeyF2:
@@ -465,7 +505,7 @@ func (r *FullscreenRenderer) GetChar() Event {
 
 		// section 7: Esc
 		case tcell.KeyEsc:
-			return Event{ESC, 0, nil}
+			return Event{Esc, 0, nil}
 		}
 	}
 
@@ -502,7 +542,7 @@ func (r *FullscreenRenderer) NewWindow(top int, left int, width int, height int,
 	if preview {
 		normal = ColPreview
 	}
-	return &TcellWindow{
+	w := &TcellWindow{
 		color:       r.theme.Colored,
 		preview:     preview,
 		top:         top,
@@ -511,6 +551,8 @@ func (r *FullscreenRenderer) NewWindow(top int, left int, width int, height int,
 		height:      height,
 		normal:      normal,
 		borderStyle: borderStyle}
+	w.Erase()
+	return w
 }
 
 func (w *TcellWindow) Close() {
@@ -526,7 +568,17 @@ func fill(x, y, w, h int, n ColorPair, r rune) {
 }
 
 func (w *TcellWindow) Erase() {
-	fill(w.left-1, w.top, w.width+1, w.height, w.normal, ' ')
+	if w.borderStyle.shape.HasLeft() {
+		fill(w.left-1, w.top, w.width, w.height-1, w.normal, ' ')
+	} else {
+		fill(w.left, w.top, w.width-1, w.height-1, w.normal, ' ')
+	}
+	w.drawBorder(false)
+}
+
+func (w *TcellWindow) EraseMaybe() bool {
+	w.Erase()
+	return true
 }
 
 func (w *TcellWindow) Enclose(y int, x int) bool {
@@ -552,6 +604,16 @@ func (w *TcellWindow) Print(text string) {
 	w.printString(text, w.normal)
 }
 
+func (w *TcellWindow) withUrl(style tcell.Style) tcell.Style {
+	if w.uri != nil {
+		style = style.Url(*w.uri)
+		if md := regexp.MustCompile(`id=([^:]+)`).FindStringSubmatch(*w.params); len(md) > 1 {
+			style = style.UrlId(md[1])
+		}
+	}
+	return style
+}
+
 func (w *TcellWindow) printString(text string, pair ColorPair) {
 	lx := 0
 	a := pair.Attr()
@@ -561,33 +623,36 @@ func (w *TcellWindow) printString(text string, pair ColorPair) {
 		style = style.
 			Reverse(a&Attr(tcell.AttrReverse) != 0).
 			Underline(a&Attr(tcell.AttrUnderline) != 0).
+			StrikeThrough(a&Attr(tcell.AttrStrikeThrough) != 0).
 			Italic(a&Attr(tcell.AttrItalic) != 0).
 			Blink(a&Attr(tcell.AttrBlink) != 0).
 			Dim(a&Attr(tcell.AttrDim) != 0)
 	}
+	style = w.withUrl(style)
 
 	gr := uniseg.NewGraphemes(text)
 	for gr.Next() {
+		st := style
 		rs := gr.Runes()
 
 		if len(rs) == 1 {
 			r := rs[0]
-			if r < rune(' ') { // ignore control characters
+			if r == '\r' {
-				continue
+				st = style.Dim(true)
+				rs[0] = '␍'
 			} else if r == '\n' {
-				w.lastY++
+				st = style.Dim(true)
-				lx = 0
+				rs[0] = '␊'
-				continue
+			} else if r < rune(' ') { // ignore control characters
-			} else if r == '\u000D' { // skip carriage return
 				continue
 			}
 		}
 		var xPos = w.left + w.lastX + lx
 		var yPos = w.top + w.lastY
 		if xPos < (w.left+w.width) && yPos < (w.top+w.height) {
-			_screen.SetContent(xPos, yPos, rs[0], rs[1:], style)
+			_screen.SetContent(xPos, yPos, rs[0], rs[1:], st)
 		}
-		lx += runewidth.StringWidth(string(rs))
+		lx += util.StringWidth(string(rs))
 	}
 	w.lastX += lx
 }
@@ -612,16 +677,27 @@ func (w *TcellWindow) fillString(text string, pair ColorPair) FillReturn {
 		Dim(a&Attr(tcell.AttrDim) != 0).
 		Reverse(a&Attr(tcell.AttrReverse) != 0).
 		Underline(a&Attr(tcell.AttrUnderline) != 0).
+		StrikeThrough(a&Attr(tcell.AttrStrikeThrough) != 0).
 		Italic(a&Attr(tcell.AttrItalic) != 0)
+	style = w.withUrl(style)
 
 	gr := uniseg.NewGraphemes(text)
+Loop:
 	for gr.Next() {
+		st := style
 		rs := gr.Runes()
-		if len(rs) == 1 && rs[0] == '\n' {
+		if len(rs) == 1 {
-			w.lastY++
+			r := rs[0]
-			w.lastX = 0
+			switch r {
-			lx = 0
+			case '\r':
-			continue
+				st = style.Dim(true)
+				rs[0] = '␍'
+			case '\n':
+				w.lastY++
+				w.lastX = 0
+				lx = 0
+				continue Loop
+			}
 		}
 
 		// word wrap:
@@ -638,8 +714,8 @@ func (w *TcellWindow) fillString(text string, pair ColorPair) FillReturn {
 			return FillSuspend
 		}
 
-		_screen.SetContent(xPos, yPos, rs[0], rs[1:], style)
+		_screen.SetContent(xPos, yPos, rs[0], rs[1:], st)
-		lx += runewidth.StringWidth(string(rs))
+		lx += util.StringWidth(string(rs))
 	}
 	w.lastX += lx
 	if w.lastX == w.width {
@@ -655,6 +731,16 @@ func (w *TcellWindow) Fill(str string) FillReturn {
 	return w.fillString(str, w.normal)
 }
 
+func (w *TcellWindow) LinkBegin(uri string, params string) {
+	w.uri = &uri
+	w.params = &params
+}
+
+func (w *TcellWindow) LinkEnd() {
+	w.uri = nil
+	w.params = nil
+}
+
 func (w *TcellWindow) CFill(fg Color, bg Color, a Attr, str string) FillReturn {
 	if fg == colDefault {
 		fg = w.normal.Fg()
@@ -665,7 +751,15 @@ func (w *TcellWindow) CFill(fg Color, bg Color, a Attr, str string) FillReturn {
 	return w.fillString(str, NewColorPair(fg, bg, a))
 }
 
-func (w *TcellWindow) drawBorder() {
+func (w *TcellWindow) DrawBorder() {
+	w.drawBorder(false)
+}
+
+func (w *TcellWindow) DrawHBorder() {
+	w.drawBorder(true)
+}
+
+func (w *TcellWindow) drawBorder(onlyHorizontal bool) {
 	shape := w.borderStyle.shape
 	if shape == BorderNone {
 		return
@@ -687,35 +781,52 @@ func (w *TcellWindow) drawBorder() {
 		style = w.normal.style()
 	}
 
+	hw := runeWidth(w.borderStyle.top)
 	switch shape {
-	case BorderRounded, BorderSharp, BorderHorizontal, BorderTop:
+	case BorderRounded, BorderSharp, BorderBold, BorderBlock, BorderThinBlock, BorderDouble, BorderHorizontal, BorderTop:
-		for x := left; x < right; x++ {
+		max := right - 2*hw
-			_screen.SetContent(x, top, w.borderStyle.horizontal, nil, style)
+		if shape == BorderHorizontal || shape == BorderTop {
+			max = right - hw
+		}
+		// tcell has an issue displaying two overlapping wide runes
+		// e.g.  SetContent(  HH  )
+		//       SetContent(   TR )
+		//       ==================
+		//                 (  HH  ) => TR is ignored
+		for x := left; x <= max; x += hw {
+			_screen.SetContent(x, top, w.borderStyle.top, nil, style)
 		}
 	}
 	switch shape {
-	case BorderRounded, BorderSharp, BorderHorizontal, BorderBottom:
+	case BorderRounded, BorderSharp, BorderBold, BorderBlock, BorderThinBlock, BorderDouble, BorderHorizontal, BorderBottom:
-		for x := left; x < right; x++ {
+		max := right - 2*hw
-			_screen.SetContent(x, bot-1, w.borderStyle.horizontal, nil, style)
+		if shape == BorderHorizontal || shape == BorderBottom {
+			max = right - hw
+		}
+		for x := left; x <= max; x += hw {
+			_screen.SetContent(x, bot-1, w.borderStyle.bottom, nil, style)
+		}
+	}
+	if !onlyHorizontal {
+		switch shape {
+		case BorderRounded, BorderSharp, BorderBold, BorderBlock, BorderThinBlock, BorderDouble, BorderVertical, BorderLeft:
+			for y := top; y < bot; y++ {
+				_screen.SetContent(left, y, w.borderStyle.left, nil, style)
+			}
+		}
+		switch shape {
+		case BorderRounded, BorderSharp, BorderBold, BorderBlock, BorderThinBlock, BorderDouble, BorderVertical, BorderRight:
+			vw := runeWidth(w.borderStyle.right)
+			for y := top; y < bot; y++ {
+				_screen.SetContent(right-vw, y, w.borderStyle.right, nil, style)
+			}
 		}
 	}
 	switch shape {
-	case BorderRounded, BorderSharp, BorderVertical, BorderLeft:
+	case BorderRounded, BorderSharp, BorderBold, BorderBlock, BorderThinBlock, BorderDouble:
-		for y := top; y < bot; y++ {
-			_screen.SetContent(left, y, w.borderStyle.vertical, nil, style)
-		}
-	}
-	switch shape {
-	case BorderRounded, BorderSharp, BorderVertical, BorderRight:
-		for y := top; y < bot; y++ {
-			_screen.SetContent(right-1, y, w.borderStyle.vertical, nil, style)
-		}
-	}
-	switch shape {
-	case BorderRounded, BorderSharp:
 		_screen.SetContent(left, top, w.borderStyle.topLeft, nil, style)
-		_screen.SetContent(right-1, top, w.borderStyle.topRight, nil, style)
+		_screen.SetContent(right-runeWidth(w.borderStyle.topRight), top, w.borderStyle.topRight, nil, style)
 		_screen.SetContent(left, bot-1, w.borderStyle.bottomLeft, nil, style)
-		_screen.SetContent(right-1, bot-1, w.borderStyle.bottomRight, nil, style)
+		_screen.SetContent(right-runeWidth(w.borderStyle.bottomRight), bot-1, w.borderStyle.bottomRight, nil, style)
 	}
 }

src/tui/tcell_test.go

@@ -3,9 +3,10 @@
 package tui
 
 import (
+	"os"
 	"testing"
 
-	"github.com/gdamore/tcell"
+	"github.com/gdamore/tcell/v2"
 	"github.com/junegunn/fzf/src/util"
 )
 
@@ -20,7 +21,7 @@ func assert(t *testing.T, context string, got interface{}, want interface{}) boo
 
 // Test the handling of the tcell keyboard events.
 func TestGetCharEventKey(t *testing.T) {
-	if util.ToTty() {
+	if util.IsTty(os.Stdout) {
 		// This test is skipped when output goes to terminal, because it causes
 		// some glitches:
 		// - output lines may not start at the beginning of a row which makes
@@ -102,22 +103,22 @@ func TestGetCharEventKey(t *testing.T) {
 		// KeyBackspace2 is alias for KeyDEL = 0x7F (ASCII) (allegedly unused by Windows)
 		// KeyDelete = 0x2E (VK_DELETE constant in Windows)
 		// KeyBackspace is alias for KeyBS = 0x08 (ASCII) (implicit alias with KeyCtrlH)
-		{giveKey{tcell.KeyBackspace2, 0, tcell.ModNone}, wantKey{BSpace, 0, nil}}, // fabricated
+		{giveKey{tcell.KeyBackspace2, 0, tcell.ModNone}, wantKey{Backspace, 0, nil}},   // fabricated
-		{giveKey{tcell.KeyBackspace2, 0, tcell.ModAlt}, wantKey{AltBS, 0, nil}},   // fabricated
+		{giveKey{tcell.KeyBackspace2, 0, tcell.ModAlt}, wantKey{AltBackspace, 0, nil}}, // fabricated
-		{giveKey{tcell.KeyDEL, 0, tcell.ModNone}, wantKey{BSpace, 0, nil}},        // fabricated, unhandled
+		{giveKey{tcell.KeyDEL, 0, tcell.ModNone}, wantKey{Backspace, 0, nil}},          // fabricated, unhandled
-		{giveKey{tcell.KeyDelete, 0, tcell.ModNone}, wantKey{Del, 0, nil}},
+		{giveKey{tcell.KeyDelete, 0, tcell.ModNone}, wantKey{Delete, 0, nil}},
-		{giveKey{tcell.KeyDelete, 0, tcell.ModAlt}, wantKey{Del, 0, nil}},
+		{giveKey{tcell.KeyDelete, 0, tcell.ModAlt}, wantKey{Delete, 0, nil}},
 		{giveKey{tcell.KeyBackspace, 0, tcell.ModNone}, wantKey{Invalid, 0, nil}},                                                  // fabricated, unhandled
 		{giveKey{tcell.KeyBS, 0, tcell.ModNone}, wantKey{Invalid, 0, nil}},                                                         // fabricated, unhandled
 		{giveKey{tcell.KeyCtrlH, 0, tcell.ModNone}, wantKey{Invalid, 0, nil}},                                                      // fabricated, unhandled
-		{giveKey{tcell.KeyCtrlH, rune(tcell.KeyCtrlH), tcell.ModNone}, wantKey{BSpace, 0, nil}},                                    // actual "Backspace" keystroke
+		{giveKey{tcell.KeyCtrlH, rune(tcell.KeyCtrlH), tcell.ModNone}, wantKey{Backspace, 0, nil}},                                 // actual "Backspace" keystroke
-		{giveKey{tcell.KeyCtrlH, rune(tcell.KeyCtrlH), tcell.ModAlt}, wantKey{AltBS, 0, nil}},                                      // actual "Alt+Backspace" keystroke
+		{giveKey{tcell.KeyCtrlH, rune(tcell.KeyCtrlH), tcell.ModAlt}, wantKey{AltBackspace, 0, nil}},                               // actual "Alt+Backspace" keystroke
-		{giveKey{tcell.KeyDEL, rune(tcell.KeyDEL), tcell.ModCtrl}, wantKey{BSpace, 0, nil}},                                        // actual "Ctrl+Backspace" keystroke
+		{giveKey{tcell.KeyDEL, rune(tcell.KeyDEL), tcell.ModCtrl}, wantKey{Backspace, 0, nil}},                                     // actual "Ctrl+Backspace" keystroke
-		{giveKey{tcell.KeyCtrlH, rune(tcell.KeyCtrlH), tcell.ModShift}, wantKey{BSpace, 0, nil}},                                   // actual "Shift+Backspace" keystroke
+		{giveKey{tcell.KeyCtrlH, rune(tcell.KeyCtrlH), tcell.ModShift}, wantKey{Backspace, 0, nil}},                                // actual "Shift+Backspace" keystroke
-		{giveKey{tcell.KeyCtrlH, 0, tcell.ModCtrl | tcell.ModAlt}, wantKey{BSpace, 0, nil}},                                        // actual "Ctrl+Alt+Backspace" keystroke
+		{giveKey{tcell.KeyCtrlH, 0, tcell.ModCtrl | tcell.ModAlt}, wantKey{Backspace, 0, nil}},                                     // actual "Ctrl+Alt+Backspace" keystroke
-		{giveKey{tcell.KeyCtrlH, 0, tcell.ModCtrl | tcell.ModShift}, wantKey{BSpace, 0, nil}},                                      // actual "Ctrl+Shift+Backspace" keystroke
+		{giveKey{tcell.KeyCtrlH, 0, tcell.ModCtrl | tcell.ModShift}, wantKey{Backspace, 0, nil}},                                   // actual "Ctrl+Shift+Backspace" keystroke
-		{giveKey{tcell.KeyCtrlH, rune(tcell.KeyCtrlH), tcell.ModShift | tcell.ModAlt}, wantKey{AltBS, 0, nil}},                     // actual "Shift+Alt+Backspace" keystroke
+		{giveKey{tcell.KeyCtrlH, rune(tcell.KeyCtrlH), tcell.ModShift | tcell.ModAlt}, wantKey{AltBackspace, 0, nil}},              // actual "Shift+Alt+Backspace" keystroke
-		{giveKey{tcell.KeyCtrlH, 0, tcell.ModCtrl | tcell.ModAlt | tcell.ModShift}, wantKey{BSpace, 0, nil}},                       // actual "Ctrl+Shift+Alt+Backspace" keystroke
+		{giveKey{tcell.KeyCtrlH, 0, tcell.ModCtrl | tcell.ModAlt | tcell.ModShift}, wantKey{Backspace, 0, nil}},                    // actual "Ctrl+Shift+Alt+Backspace" keystroke
 		{giveKey{tcell.KeyCtrlH, rune(tcell.KeyCtrlH), tcell.ModCtrl}, wantKey{CtrlH, 0, nil}},                                     // actual "Ctrl+H" keystroke
 		{giveKey{tcell.KeyCtrlH, rune(tcell.KeyCtrlH), tcell.ModCtrl | tcell.ModAlt}, wantKey{CtrlAlt, 'h', nil}},                  // fabricated "Ctrl+Alt+H" keystroke
 		{giveKey{tcell.KeyCtrlH, rune(tcell.KeyCtrlH), tcell.ModCtrl | tcell.ModShift}, wantKey{CtrlH, 0, nil}},                    // actual "Ctrl+Shift+H" keystroke
@@ -126,8 +127,8 @@ func TestGetCharEventKey(t *testing.T) {
 		// section 4: (Alt+Shift)+Key(Up|Down|Left|Right)
 		{giveKey{tcell.KeyUp, 0, tcell.ModNone}, wantKey{Up, 0, nil}},
 		{giveKey{tcell.KeyDown, 0, tcell.ModAlt}, wantKey{AltDown, 0, nil}},
-		{giveKey{tcell.KeyLeft, 0, tcell.ModShift}, wantKey{SLeft, 0, nil}},
+		{giveKey{tcell.KeyLeft, 0, tcell.ModShift}, wantKey{ShiftLeft, 0, nil}},
-		{giveKey{tcell.KeyRight, 0, tcell.ModShift | tcell.ModAlt}, wantKey{AltSRight, 0, nil}},
+		{giveKey{tcell.KeyRight, 0, tcell.ModShift | tcell.ModAlt}, wantKey{AltShiftRight, 0, nil}},
 		{giveKey{tcell.KeyUpLeft, 0, tcell.ModNone}, wantKey{Invalid, 0, nil}},    // fabricated, unhandled
 		{giveKey{tcell.KeyUpRight, 0, tcell.ModNone}, wantKey{Invalid, 0, nil}},   // fabricated, unhandled
 		{giveKey{tcell.KeyDownLeft, 0, tcell.ModNone}, wantKey{Invalid, 0, nil}},  // fabricated, unhandled
@@ -161,11 +162,11 @@ func TestGetCharEventKey(t *testing.T) {
 
 		// section 7: Esc
 		// KeyEsc and KeyEscape are aliases for KeyESC
-		{giveKey{tcell.KeyEsc, rune(tcell.KeyEsc), tcell.ModNone}, wantKey{ESC, 0, nil}},               // fabricated
+		{giveKey{tcell.KeyEsc, rune(tcell.KeyEsc), tcell.ModNone}, wantKey{Esc, 0, nil}},               // fabricated
-		{giveKey{tcell.KeyESC, rune(tcell.KeyESC), tcell.ModNone}, wantKey{ESC, 0, nil}},               // unhandled
+		{giveKey{tcell.KeyESC, rune(tcell.KeyESC), tcell.ModNone}, wantKey{Esc, 0, nil}},               // unhandled
-		{giveKey{tcell.KeyEscape, rune(tcell.KeyEscape), tcell.ModNone}, wantKey{ESC, 0, nil}},         // fabricated, unhandled
+		{giveKey{tcell.KeyEscape, rune(tcell.KeyEscape), tcell.ModNone}, wantKey{Esc, 0, nil}},         // fabricated, unhandled
-		{giveKey{tcell.KeyESC, rune(tcell.KeyESC), tcell.ModCtrl}, wantKey{ESC, 0, nil}},               // actual Ctrl+[ keystroke
+		{giveKey{tcell.KeyESC, rune(tcell.KeyESC), tcell.ModCtrl}, wantKey{Esc, 0, nil}},               // actual Ctrl+[ keystroke
-		{giveKey{tcell.KeyCtrlLeftSq, rune(tcell.KeyCtrlLeftSq), tcell.ModCtrl}, wantKey{ESC, 0, nil}}, // fabricated, unhandled
+		{giveKey{tcell.KeyCtrlLeftSq, rune(tcell.KeyCtrlLeftSq), tcell.ModCtrl}, wantKey{Esc, 0, nil}}, // fabricated, unhandled
 
 		// section 8: Invalid
 		{giveKey{tcell.KeyRune, 'a', tcell.ModMeta}, wantKey{Rune, 'a', nil}}, // fabricated
@@ -182,6 +183,7 @@ func TestGetCharEventKey(t *testing.T) {
 	r.Init()
 
 	// run and evaluate the tests
+	initialResizeAsInvalid := true
 	for _, test := range tests {
 		// generate key event
 		giveEvent := tcell.NewEventKey(test.giveKey.Type, test.giveKey.Char, test.giveKey.Mods)
@@ -191,8 +193,9 @@ func TestGetCharEventKey(t *testing.T) {
 		// process the event in fzf and evaluate the test
 		gotEvent := r.GetChar()
 		// skip Resize events, those are sometimes put in the buffer outside of this test
-		for gotEvent.Type == Resize {
+		if initialResizeAsInvalid && gotEvent.Type == Invalid {
-			t.Logf("Resize swallowed")
+			t.Logf("Resize as Invalid swallowed")
+			initialResizeAsInvalid = false
 			gotEvent = r.GetChar()
 		}
 		t.Logf("wantEvent = %T{Type: %v, Char: %q (%[3]v)}\n", test.wantKey, test.wantKey.Type, test.wantKey.Char)
@@ -257,7 +260,7 @@ Quick reference
 37					LeftClick
 38					RightClick
 39					BTab
-40					BSpace
+40					Backspace
 41					Del
 42					PgUp
 43					PgDn
@@ -270,7 +273,7 @@ Quick reference
 50					Insert
 51					SUp
 52					SDown
-53					SLeft
+53					ShiftLeft
 54					SRight
 55					F1
 56					F2
@@ -286,15 +289,15 @@ Quick reference
 66					F12
 67					Change
 68					BackwardEOF
-69					AltBS
+69					AltBackspace
 70					AltUp
 71					AltDown
 72					AltLeft
 73					AltRight
 74					AltSUp
 75					AltSDown
-76					AltSLeft
+76					AltShiftLeft
-77					AltSRight
+77					AltShiftRight
 78					Alt
 79					CtrlAlt
 ..

src/tui/ttyname_unix.go

@@ -3,45 +3,52 @@
 package tui
 
 import (
-	"io/ioutil"
 	"os"
+	"sync/atomic"
 	"syscall"
 )
 
 var devPrefixes = [...]string{"/dev/pts/", "/dev/"}
 
+var tty atomic.Value
+
 func ttyname() string {
+	if cached := tty.Load(); cached != nil {
+		return cached.(string)
+	}
+
 	var stderr syscall.Stat_t
 	if syscall.Fstat(2, &stderr) != nil {
 		return ""
 	}
 
 	for _, prefix := range devPrefixes {
-		files, err := ioutil.ReadDir(prefix)
+		files, err := os.ReadDir(prefix)
 		if err != nil {
 			continue
 		}
 
 		for _, file := range files {
-			if stat, ok := file.Sys().(*syscall.Stat_t); ok && stat.Rdev == stderr.Rdev {
+			info, err := file.Info()
-				return prefix + file.Name()
+			if err != nil {
+				continue
+			}
+			if stat, ok := info.Sys().(*syscall.Stat_t); ok && stat.Rdev == stderr.Rdev {
+				value := prefix + file.Name()
+				tty.Store(value)
+				return value
 			}
 		}
 	}
 	return ""
 }
 
-// TtyIn returns terminal device to be used as STDIN, falls back to os.Stdin
+// TtyIn returns terminal device to read user input
-func TtyIn() *os.File {
+func TtyIn() (*os.File, error) {
-	in, err := os.OpenFile(consoleDevice, syscall.O_RDONLY, 0)
+	return openTtyIn()
-	if err != nil {
+}
-		tty := ttyname()
+
-		if len(tty) > 0 {
+// TtyIn returns terminal device to write to
-			if in, err := os.OpenFile(tty, syscall.O_RDONLY, 0); err == nil {
+func TtyOut() (*os.File, error) {
-				return in
+	return openTtyOut()
-			}
-		}
-		return os.Stdin
-	}
-	return in
 }

src/tui/ttyname_windows.go

@@ -2,13 +2,20 @@
 
 package tui
 
-import "os"
+import (
+	"os"
+)
 
 func ttyname() string {
 	return ""
 }
 
 // TtyIn on Windows returns os.Stdin
-func TtyIn() *os.File {
+func TtyIn() (*os.File, error) {
-	return os.Stdin
+	return os.Stdin, nil
+}
+
+// TtyIn on Windows returns nil
+func TtyOut() (*os.File, error) {
+	return nil, nil
 }

src/tui/tui.go

@@ -1,13 +1,16 @@
 package tui
 
 import (
-	"fmt"
-	"os"
 	"strconv"
 	"time"
+
+	"github.com/junegunn/fzf/src/util"
+	"github.com/rivo/uniseg"
 )
 
 // Types of user action
+//
+//go:generate stringer -type=EventType
 type EventType int
 
 const (
@@ -39,8 +42,9 @@ const (
 	CtrlX
 	CtrlY
 	CtrlZ
-	ESC
+	Esc
 	CtrlSpace
+	CtrlDelete
 
 	// https://apple.stackexchange.com/questions/24261/how-do-i-send-c-that-is-control-slash-to-the-terminal
 	CtrlBackSlash
@@ -48,19 +52,12 @@ const (
 	CtrlCaret
 	CtrlSlash
 
-	Invalid
+	ShiftTab
-	Resize
+	Backspace
-	Mouse
-	DoubleClick
-	LeftClick
-	RightClick
 
-	BTab
+	Delete
-	BSpace
+	PageUp
-
+	PageDown
-	Del
-	PgUp
-	PgDn
 
 	Up
 	Down
@@ -70,10 +67,11 @@ const (
 	End
 	Insert
 
-	SUp
+	ShiftUp
-	SDown
+	ShiftDown
-	SLeft
+	ShiftLeft
-	SRight
+	ShiftRight
+	ShiftDelete
 
 	F1
 	F2
@@ -88,23 +86,50 @@ const (
 	F11
 	F12
 
-	Change
+	AltBackspace
-	BackwardEOF
-
-	AltBS
 
 	AltUp
 	AltDown
 	AltLeft
 	AltRight
 
-	AltSUp
+	AltShiftUp
-	AltSDown
+	AltShiftDown
-	AltSLeft
+	AltShiftLeft
-	AltSRight
+	AltShiftRight
 
 	Alt
 	CtrlAlt
+
+	Invalid
+	Fatal
+
+	Mouse
+	DoubleClick
+	LeftClick
+	RightClick
+	SLeftClick
+	SRightClick
+	ScrollUp
+	ScrollDown
+	SScrollUp
+	SScrollDown
+	PreviewScrollUp
+	PreviewScrollDown
+
+	// Events
+	Resize
+	Change
+	BackwardEOF
+	Start
+	Load
+	Focus
+	One
+	Zero
+	Result
+	Jump
+	JumpCancel
+	ClickHeader
 )
 
 func (t EventType) AsEvent() Event {
@@ -124,6 +149,31 @@ func (e Event) Comparable() Event {
 	return Event{e.Type, e.Char, nil}
 }
 
+func (e Event) KeyName() string {
+	if e.Type >= Invalid {
+		return ""
+	}
+
+	switch e.Type {
+	case Rune:
+		return string(e.Char)
+	case Alt:
+		return "alt-" + string(e.Char)
+	case CtrlAlt:
+		return "ctrl-alt-" + string(e.Char)
+	case CtrlBackSlash:
+		return "ctrl-\\"
+	case CtrlRightBracket:
+		return "ctrl-]"
+	case CtrlCaret:
+		return "ctrl-^"
+	case CtrlSlash:
+		return "ctrl-/"
+	}
+
+	return util.ToKebabCase(e.Type.String())
+}
+
 func Key(r rune) Event {
 	return Event{Rune, r, nil}
 }
@@ -248,25 +298,34 @@ func (p ColorPair) MergeNonDefault(other ColorPair) ColorPair {
 }
 
 type ColorTheme struct {
-	Colored      bool
+	Colored          bool
-	Input        ColorAttr
+	Input            ColorAttr
-	Disabled     ColorAttr
+	Disabled         ColorAttr
-	Fg           ColorAttr
+	Fg               ColorAttr
-	Bg           ColorAttr
+	Bg               ColorAttr
-	PreviewFg    ColorAttr
+	SelectedFg       ColorAttr
-	PreviewBg    ColorAttr
+	SelectedBg       ColorAttr
-	DarkBg       ColorAttr
+	SelectedMatch    ColorAttr
-	Gutter       ColorAttr
+	PreviewFg        ColorAttr
-	Prompt       ColorAttr
+	PreviewBg        ColorAttr
-	Match        ColorAttr
+	DarkBg           ColorAttr
-	Current      ColorAttr
+	Gutter           ColorAttr
-	CurrentMatch ColorAttr
+	Prompt           ColorAttr
-	Spinner      ColorAttr
+	Match            ColorAttr
-	Info         ColorAttr
+	Current          ColorAttr
-	Cursor       ColorAttr
+	CurrentMatch     ColorAttr
-	Selected     ColorAttr
+	Spinner          ColorAttr
-	Header       ColorAttr
+	Info             ColorAttr
-	Border       ColorAttr
+	Cursor           ColorAttr
+	Marker           ColorAttr
+	Header           ColorAttr
+	Separator        ColorAttr
+	Scrollbar        ColorAttr
+	Border           ColorAttr
+	PreviewBorder    ColorAttr
+	PreviewScrollbar ColorAttr
+	BorderLabel      ColorAttr
+	PreviewLabel     ColorAttr
 }
 
 type Event struct {
@@ -288,9 +347,14 @@ type MouseEvent struct {
 type BorderShape int
 
 const (
-	BorderNone BorderShape = iota
+	BorderUndefined BorderShape = iota
+	BorderNone
 	BorderRounded
 	BorderSharp
+	BorderBold
+	BorderBlock
+	BorderThinBlock
+	BorderDouble
 	BorderHorizontal
 	BorderVertical
 	BorderTop
@@ -299,10 +363,36 @@ const (
 	BorderRight
 )
 
+func (s BorderShape) HasLeft() bool {
+	switch s {
+	case BorderNone, BorderRight, BorderTop, BorderBottom, BorderHorizontal: // No Left
+		return false
+	}
+	return true
+}
+
+func (s BorderShape) HasRight() bool {
+	switch s {
+	case BorderNone, BorderLeft, BorderTop, BorderBottom, BorderHorizontal: // No right
+		return false
+	}
+	return true
+}
+
+func (s BorderShape) HasTop() bool {
+	switch s {
+	case BorderNone, BorderLeft, BorderRight, BorderBottom, BorderVertical: // No top
+		return false
+	}
+	return true
+}
+
 type BorderStyle struct {
 	shape       BorderShape
-	horizontal  rune
+	top         rune
-	vertical    rune
+	bottom      rune
+	left        rune
+	right       rune
 	topLeft     rune
 	topRight    rune
 	bottomLeft  rune
@@ -312,64 +402,143 @@ type BorderStyle struct {
 type BorderCharacter int
 
 func MakeBorderStyle(shape BorderShape, unicode bool) BorderStyle {
-	if unicode {
+	if !unicode {
-		if shape == BorderRounded {
-			return BorderStyle{
-				shape:       shape,
-				horizontal:  '─',
-				vertical:    '│',
-				topLeft:     '╭',
-				topRight:    '╮',
-				bottomLeft:  '╰',
-				bottomRight: '╯',
-			}
-		}
 		return BorderStyle{
 			shape:       shape,
-			horizontal:  '─',
+			top:         '-',
-			vertical:    '│',
+			bottom:      '-',
+			left:        '|',
+			right:       '|',
+			topLeft:     '+',
+			topRight:    '+',
+			bottomLeft:  '+',
+			bottomRight: '+',
+		}
+	}
+	switch shape {
+	case BorderSharp:
+		return BorderStyle{
+			shape:       shape,
+			top:         '─',
+			bottom:      '─',
+			left:        '│',
+			right:       '│',
 			topLeft:     '┌',
 			topRight:    '┐',
 			bottomLeft:  '└',
 			bottomRight: '┘',
 		}
+	case BorderBold:
+		return BorderStyle{
+			shape:       shape,
+			top:         '━',
+			bottom:      '━',
+			left:        '┃',
+			right:       '┃',
+			topLeft:     '┏',
+			topRight:    '┓',
+			bottomLeft:  '┗',
+			bottomRight: '┛',
+		}
+	case BorderBlock:
+		// ▛▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▜
+		// ▌                  ▐
+		// ▙▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▟
+		return BorderStyle{
+			shape:       shape,
+			top:         '▀',
+			bottom:      '▄',
+			left:        '▌',
+			right:       '▐',
+			topLeft:     '▛',
+			topRight:    '▜',
+			bottomLeft:  '▙',
+			bottomRight: '▟',
+		}
+
+	case BorderThinBlock:
+		// 🭽▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔🭾
+		// ▏                  ▕
+		// 🭼▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁🭿
+		return BorderStyle{
+			shape:       shape,
+			top:         '▔',
+			bottom:      '▁',
+			left:        '▏',
+			right:       '▕',
+			topLeft:     '🭽',
+			topRight:    '🭾',
+			bottomLeft:  '🭼',
+			bottomRight: '🭿',
+		}
+
+	case BorderDouble:
+		return BorderStyle{
+			shape:       shape,
+			top:         '═',
+			bottom:      '═',
+			left:        '║',
+			right:       '║',
+			topLeft:     '╔',
+			topRight:    '╗',
+			bottomLeft:  '╚',
+			bottomRight: '╝',
+		}
 	}
 	return BorderStyle{
 		shape:       shape,
-		horizontal:  '-',
+		top:         '─',
-		vertical:    '|',
+		bottom:      '─',
-		topLeft:     '+',
+		left:        '│',
-		topRight:    '+',
+		right:       '│',
-		bottomLeft:  '+',
+		topLeft:     '╭',
-		bottomRight: '+',
+		topRight:    '╮',
+		bottomLeft:  '╰',
+		bottomRight: '╯',
 	}
 }
 
 func MakeTransparentBorder() BorderStyle {
 	return BorderStyle{
 		shape:       BorderRounded,
-		horizontal:  ' ',
+		top:         ' ',
-		vertical:    ' ',
+		bottom:      ' ',
+		left:        ' ',
+		right:       ' ',
 		topLeft:     ' ',
 		topRight:    ' ',
 		bottomLeft:  ' ',
 		bottomRight: ' '}
 }
 
+type TermSize struct {
+	Lines    int
+	Columns  int
+	PxWidth  int
+	PxHeight int
+}
+
 type Renderer interface {
-	Init()
+	Init() error
+	Resize(maxHeightFunc func(int) int)
 	Pause(clear bool)
 	Resume(clear bool, sigcont bool)
 	Clear()
 	RefreshWindows(windows []Window)
 	Refresh()
 	Close()
+	PassThrough(string)
+	NeedScrollbarRedraw() bool
+	ShouldEmitResizeEvent() bool
 
 	GetChar() Event
 
+	Top() int
 	MaxX() int
 	MaxY() int
 
+	Size() TermSize
+
 	NewWindow(top int, left int, width int, height int, preview bool, borderStyle BorderStyle) Window
 }
 
@@ -379,6 +548,8 @@ type Window interface {
 	Width() int
 	Height() int
 
+	DrawBorder()
+	DrawHBorder()
 	Refresh()
 	FinishFill()
 	Close()
@@ -393,7 +564,10 @@ type Window interface {
 	CPrint(color ColorPair, text string)
 	Fill(text string) FillReturn
 	CFill(fg Color, bg Color, attr Attr, text string) FillReturn
+	LinkBegin(uri string, params string)
+	LinkEnd()
 	Erase()
+	EraseMaybe() bool
 }
 
 type FullscreenRenderer struct {
@@ -401,7 +575,7 @@ type FullscreenRenderer struct {
 	mouse        bool
 	forceBlack   bool
 	prevDownTime time.Time
-	clickY       []int
+	clicks       [][2]int
 }
 
 func NewFullscreenRenderer(theme *ColorTheme, forceBlack bool, mouse bool) Renderer {
@@ -410,7 +584,7 @@ func NewFullscreenRenderer(theme *ColorTheme, forceBlack bool, mouse bool) Rende
 		mouse:        mouse,
 		forceBlack:   forceBlack,
 		prevDownTime: time.Unix(0, 0),
-		clickY:       []int{}}
+		clicks:       [][2]int{}}
 	return r
 }
 
@@ -426,133 +600,186 @@ var (
 	ColMatch                ColorPair
 	ColCursor               ColorPair
 	ColCursorEmpty          ColorPair
+	ColMarker               ColorPair
 	ColSelected             ColorPair
+	ColSelectedMatch        ColorPair
 	ColCurrent              ColorPair
 	ColCurrentMatch         ColorPair
 	ColCurrentCursor        ColorPair
 	ColCurrentCursorEmpty   ColorPair
-	ColCurrentSelected      ColorPair
+	ColCurrentMarker        ColorPair
 	ColCurrentSelectedEmpty ColorPair
 	ColSpinner              ColorPair
 	ColInfo                 ColorPair
 	ColHeader               ColorPair
+	ColSeparator            ColorPair
+	ColScrollbar            ColorPair
 	ColBorder               ColorPair
 	ColPreview              ColorPair
 	ColPreviewBorder        ColorPair
+	ColBorderLabel          ColorPair
+	ColPreviewLabel         ColorPair
+	ColPreviewScrollbar     ColorPair
+	ColPreviewSpinner       ColorPair
 )
 
 func EmptyTheme() *ColorTheme {
 	return &ColorTheme{
-		Colored:      true,
+		Colored:          true,
-		Input:        ColorAttr{colUndefined, AttrUndefined},
+		Input:            ColorAttr{colUndefined, AttrUndefined},
-		Disabled:     ColorAttr{colUndefined, AttrUndefined},
+		Fg:               ColorAttr{colUndefined, AttrUndefined},
-		Fg:           ColorAttr{colUndefined, AttrUndefined},
+		Bg:               ColorAttr{colUndefined, AttrUndefined},
-		Bg:           ColorAttr{colUndefined, AttrUndefined},
+		SelectedFg:       ColorAttr{colUndefined, AttrUndefined},
-		PreviewFg:    ColorAttr{colUndefined, AttrUndefined},
+		SelectedBg:       ColorAttr{colUndefined, AttrUndefined},
-		PreviewBg:    ColorAttr{colUndefined, AttrUndefined},
+		SelectedMatch:    ColorAttr{colUndefined, AttrUndefined},
-		DarkBg:       ColorAttr{colUndefined, AttrUndefined},
+		DarkBg:           ColorAttr{colUndefined, AttrUndefined},
-		Gutter:       ColorAttr{colUndefined, AttrUndefined},
+		Prompt:           ColorAttr{colUndefined, AttrUndefined},
-		Prompt:       ColorAttr{colUndefined, AttrUndefined},
+		Match:            ColorAttr{colUndefined, AttrUndefined},
-		Match:        ColorAttr{colUndefined, AttrUndefined},
+		Current:          ColorAttr{colUndefined, AttrUndefined},
-		Current:      ColorAttr{colUndefined, AttrUndefined},
+		CurrentMatch:     ColorAttr{colUndefined, AttrUndefined},
-		CurrentMatch: ColorAttr{colUndefined, AttrUndefined},
+		Spinner:          ColorAttr{colUndefined, AttrUndefined},
-		Spinner:      ColorAttr{colUndefined, AttrUndefined},
+		Info:             ColorAttr{colUndefined, AttrUndefined},
-		Info:         ColorAttr{colUndefined, AttrUndefined},
+		Cursor:           ColorAttr{colUndefined, AttrUndefined},
-		Cursor:       ColorAttr{colUndefined, AttrUndefined},
+		Marker:           ColorAttr{colUndefined, AttrUndefined},
-		Selected:     ColorAttr{colUndefined, AttrUndefined},
+		Header:           ColorAttr{colUndefined, AttrUndefined},
-		Header:       ColorAttr{colUndefined, AttrUndefined},
+		Border:           ColorAttr{colUndefined, AttrUndefined},
-		Border:       ColorAttr{colUndefined, AttrUndefined}}
+		BorderLabel:      ColorAttr{colUndefined, AttrUndefined},
+		Disabled:         ColorAttr{colUndefined, AttrUndefined},
+		PreviewFg:        ColorAttr{colUndefined, AttrUndefined},
+		PreviewBg:        ColorAttr{colUndefined, AttrUndefined},
+		Gutter:           ColorAttr{colUndefined, AttrUndefined},
+		PreviewBorder:    ColorAttr{colUndefined, AttrUndefined},
+		PreviewScrollbar: ColorAttr{colUndefined, AttrUndefined},
+		PreviewLabel:     ColorAttr{colUndefined, AttrUndefined},
+		Separator:        ColorAttr{colUndefined, AttrUndefined},
+		Scrollbar:        ColorAttr{colUndefined, AttrUndefined},
+	}
 }
 
 func NoColorTheme() *ColorTheme {
 	return &ColorTheme{
-		Colored:      false,
+		Colored:          false,
-		Input:        ColorAttr{colDefault, AttrRegular},
+		Input:            ColorAttr{colDefault, AttrUndefined},
-		Disabled:     ColorAttr{colDefault, AttrRegular},
+		Fg:               ColorAttr{colDefault, AttrUndefined},
-		Fg:           ColorAttr{colDefault, AttrRegular},
+		Bg:               ColorAttr{colDefault, AttrUndefined},
-		Bg:           ColorAttr{colDefault, AttrRegular},
+		SelectedFg:       ColorAttr{colDefault, AttrUndefined},
-		PreviewFg:    ColorAttr{colDefault, AttrRegular},
+		SelectedBg:       ColorAttr{colDefault, AttrUndefined},
-		PreviewBg:    ColorAttr{colDefault, AttrRegular},
+		SelectedMatch:    ColorAttr{colDefault, AttrUndefined},
-		DarkBg:       ColorAttr{colDefault, AttrRegular},
+		DarkBg:           ColorAttr{colDefault, AttrUndefined},
-		Gutter:       ColorAttr{colDefault, AttrRegular},
+		Prompt:           ColorAttr{colDefault, AttrUndefined},
-		Prompt:       ColorAttr{colDefault, AttrRegular},
+		Match:            ColorAttr{colDefault, Underline},
-		Match:        ColorAttr{colDefault, Underline},
+		Current:          ColorAttr{colDefault, Reverse},
-		Current:      ColorAttr{colDefault, Reverse},
+		CurrentMatch:     ColorAttr{colDefault, Reverse | Underline},
-		CurrentMatch: ColorAttr{colDefault, Reverse | Underline},
+		Spinner:          ColorAttr{colDefault, AttrUndefined},
-		Spinner:      ColorAttr{colDefault, AttrRegular},
+		Info:             ColorAttr{colDefault, AttrUndefined},
-		Info:         ColorAttr{colDefault, AttrRegular},
+		Cursor:           ColorAttr{colDefault, AttrUndefined},
-		Cursor:       ColorAttr{colDefault, AttrRegular},
+		Marker:           ColorAttr{colDefault, AttrUndefined},
-		Selected:     ColorAttr{colDefault, AttrRegular},
+		Header:           ColorAttr{colDefault, AttrUndefined},
-		Header:       ColorAttr{colDefault, AttrRegular},
+		Border:           ColorAttr{colDefault, AttrUndefined},
-		Border:       ColorAttr{colDefault, AttrRegular}}
+		BorderLabel:      ColorAttr{colDefault, AttrUndefined},
-}
+		Disabled:         ColorAttr{colDefault, AttrUndefined},
-
+		PreviewFg:        ColorAttr{colDefault, AttrUndefined},
-func errorExit(message string) {
+		PreviewBg:        ColorAttr{colDefault, AttrUndefined},
-	fmt.Fprintln(os.Stderr, message)
+		Gutter:           ColorAttr{colDefault, AttrUndefined},
-	os.Exit(2)
+		PreviewBorder:    ColorAttr{colDefault, AttrUndefined},
+		PreviewScrollbar: ColorAttr{colDefault, AttrUndefined},
+		PreviewLabel:     ColorAttr{colDefault, AttrUndefined},
+		Separator:        ColorAttr{colDefault, AttrUndefined},
+		Scrollbar:        ColorAttr{colDefault, AttrUndefined},
+	}
 }
 
 func init() {
 	Default16 = &ColorTheme{
-		Colored:      true,
+		Colored:          true,
-		Input:        ColorAttr{colDefault, AttrUndefined},
+		Input:            ColorAttr{colDefault, AttrUndefined},
-		Disabled:     ColorAttr{colUndefined, AttrUndefined},
+		Fg:               ColorAttr{colDefault, AttrUndefined},
-		Fg:           ColorAttr{colDefault, AttrUndefined},
+		Bg:               ColorAttr{colDefault, AttrUndefined},
-		Bg:           ColorAttr{colDefault, AttrUndefined},
+		SelectedFg:       ColorAttr{colUndefined, AttrUndefined},
-		PreviewFg:    ColorAttr{colUndefined, AttrUndefined},
+		SelectedBg:       ColorAttr{colUndefined, AttrUndefined},
-		PreviewBg:    ColorAttr{colUndefined, AttrUndefined},
+		SelectedMatch:    ColorAttr{colUndefined, AttrUndefined},
-		DarkBg:       ColorAttr{colBlack, AttrUndefined},
+		DarkBg:           ColorAttr{colBlack, AttrUndefined},
-		Gutter:       ColorAttr{colUndefined, AttrUndefined},
+		Prompt:           ColorAttr{colBlue, AttrUndefined},
-		Prompt:       ColorAttr{colBlue, AttrUndefined},
+		Match:            ColorAttr{colGreen, AttrUndefined},
-		Match:        ColorAttr{colGreen, AttrUndefined},
+		Current:          ColorAttr{colYellow, AttrUndefined},
-		Current:      ColorAttr{colYellow, AttrUndefined},
+		CurrentMatch:     ColorAttr{colGreen, AttrUndefined},
-		CurrentMatch: ColorAttr{colGreen, AttrUndefined},
+		Spinner:          ColorAttr{colGreen, AttrUndefined},
-		Spinner:      ColorAttr{colGreen, AttrUndefined},
+		Info:             ColorAttr{colWhite, AttrUndefined},
-		Info:         ColorAttr{colWhite, AttrUndefined},
+		Cursor:           ColorAttr{colRed, AttrUndefined},
-		Cursor:       ColorAttr{colRed, AttrUndefined},
+		Marker:           ColorAttr{colMagenta, AttrUndefined},
-		Selected:     ColorAttr{colMagenta, AttrUndefined},
+		Header:           ColorAttr{colCyan, AttrUndefined},
-		Header:       ColorAttr{colCyan, AttrUndefined},
+		Border:           ColorAttr{colBlack, AttrUndefined},
-		Border:       ColorAttr{colBlack, AttrUndefined}}
+		BorderLabel:      ColorAttr{colWhite, AttrUndefined},
+		Disabled:         ColorAttr{colUndefined, AttrUndefined},
+		PreviewFg:        ColorAttr{colUndefined, AttrUndefined},
+		PreviewBg:        ColorAttr{colUndefined, AttrUndefined},
+		Gutter:           ColorAttr{colUndefined, AttrUndefined},
+		PreviewBorder:    ColorAttr{colUndefined, AttrUndefined},
+		PreviewScrollbar: ColorAttr{colUndefined, AttrUndefined},
+		PreviewLabel:     ColorAttr{colUndefined, AttrUndefined},
+		Separator:        ColorAttr{colUndefined, AttrUndefined},
+		Scrollbar:        ColorAttr{colUndefined, AttrUndefined},
+	}
 	Dark256 = &ColorTheme{
-		Colored:      true,
+		Colored:          true,
-		Input:        ColorAttr{colDefault, AttrUndefined},
+		Input:            ColorAttr{colDefault, AttrUndefined},
-		Disabled:     ColorAttr{colUndefined, AttrUndefined},
+		Fg:               ColorAttr{colDefault, AttrUndefined},
-		Fg:           ColorAttr{colDefault, AttrUndefined},
+		Bg:               ColorAttr{colDefault, AttrUndefined},
-		Bg:           ColorAttr{colDefault, AttrUndefined},
+		SelectedFg:       ColorAttr{colUndefined, AttrUndefined},
-		PreviewFg:    ColorAttr{colUndefined, AttrUndefined},
+		SelectedBg:       ColorAttr{colUndefined, AttrUndefined},
-		PreviewBg:    ColorAttr{colUndefined, AttrUndefined},
+		SelectedMatch:    ColorAttr{colUndefined, AttrUndefined},
-		DarkBg:       ColorAttr{236, AttrUndefined},
+		DarkBg:           ColorAttr{236, AttrUndefined},
-		Gutter:       ColorAttr{colUndefined, AttrUndefined},
+		Prompt:           ColorAttr{110, AttrUndefined},
-		Prompt:       ColorAttr{110, AttrUndefined},
+		Match:            ColorAttr{108, AttrUndefined},
-		Match:        ColorAttr{108, AttrUndefined},
+		Current:          ColorAttr{254, AttrUndefined},
-		Current:      ColorAttr{254, AttrUndefined},
+		CurrentMatch:     ColorAttr{151, AttrUndefined},
-		CurrentMatch: ColorAttr{151, AttrUndefined},
+		Spinner:          ColorAttr{148, AttrUndefined},
-		Spinner:      ColorAttr{148, AttrUndefined},
+		Info:             ColorAttr{144, AttrUndefined},
-		Info:         ColorAttr{144, AttrUndefined},
+		Cursor:           ColorAttr{161, AttrUndefined},
-		Cursor:       ColorAttr{161, AttrUndefined},
+		Marker:           ColorAttr{168, AttrUndefined},
-		Selected:     ColorAttr{168, AttrUndefined},
+		Header:           ColorAttr{109, AttrUndefined},
-		Header:       ColorAttr{109, AttrUndefined},
+		Border:           ColorAttr{59, AttrUndefined},
-		Border:       ColorAttr{59, AttrUndefined}}
+		BorderLabel:      ColorAttr{145, AttrUndefined},
+		Disabled:         ColorAttr{colUndefined, AttrUndefined},
+		PreviewFg:        ColorAttr{colUndefined, AttrUndefined},
+		PreviewBg:        ColorAttr{colUndefined, AttrUndefined},
+		Gutter:           ColorAttr{colUndefined, AttrUndefined},
+		PreviewBorder:    ColorAttr{colUndefined, AttrUndefined},
+		PreviewScrollbar: ColorAttr{colUndefined, AttrUndefined},
+		PreviewLabel:     ColorAttr{colUndefined, AttrUndefined},
+		Separator:        ColorAttr{colUndefined, AttrUndefined},
+		Scrollbar:        ColorAttr{colUndefined, AttrUndefined},
+	}
 	Light256 = &ColorTheme{
-		Colored:      true,
+		Colored:          true,
-		Input:        ColorAttr{colDefault, AttrUndefined},
+		Input:            ColorAttr{colDefault, AttrUndefined},
-		Disabled:     ColorAttr{colUndefined, AttrUndefined},
+		Fg:               ColorAttr{colDefault, AttrUndefined},
-		Fg:           ColorAttr{colDefault, AttrUndefined},
+		Bg:               ColorAttr{colDefault, AttrUndefined},
-		Bg:           ColorAttr{colDefault, AttrUndefined},
+		SelectedFg:       ColorAttr{colUndefined, AttrUndefined},
-		PreviewFg:    ColorAttr{colUndefined, AttrUndefined},
+		SelectedBg:       ColorAttr{colUndefined, AttrUndefined},
-		PreviewBg:    ColorAttr{colUndefined, AttrUndefined},
+		SelectedMatch:    ColorAttr{colUndefined, AttrUndefined},
-		DarkBg:       ColorAttr{251, AttrUndefined},
+		DarkBg:           ColorAttr{251, AttrUndefined},
-		Gutter:       ColorAttr{colUndefined, AttrUndefined},
+		Prompt:           ColorAttr{25, AttrUndefined},
-		Prompt:       ColorAttr{25, AttrUndefined},
+		Match:            ColorAttr{66, AttrUndefined},
-		Match:        ColorAttr{66, AttrUndefined},
+		Current:          ColorAttr{237, AttrUndefined},
-		Current:      ColorAttr{237, AttrUndefined},
+		CurrentMatch:     ColorAttr{23, AttrUndefined},
-		CurrentMatch: ColorAttr{23, AttrUndefined},
+		Spinner:          ColorAttr{65, AttrUndefined},
-		Spinner:      ColorAttr{65, AttrUndefined},
+		Info:             ColorAttr{101, AttrUndefined},
-		Info:         ColorAttr{101, AttrUndefined},
+		Cursor:           ColorAttr{161, AttrUndefined},
-		Cursor:       ColorAttr{161, AttrUndefined},
+		Marker:           ColorAttr{168, AttrUndefined},
-		Selected:     ColorAttr{168, AttrUndefined},
+		Header:           ColorAttr{31, AttrUndefined},
-		Header:       ColorAttr{31, AttrUndefined},
+		Border:           ColorAttr{145, AttrUndefined},
-		Border:       ColorAttr{145, AttrUndefined}}
+		BorderLabel:      ColorAttr{59, AttrUndefined},
+		Disabled:         ColorAttr{colUndefined, AttrUndefined},
+		PreviewFg:        ColorAttr{colUndefined, AttrUndefined},
+		PreviewBg:        ColorAttr{colUndefined, AttrUndefined},
+		Gutter:           ColorAttr{colUndefined, AttrUndefined},
+		PreviewBorder:    ColorAttr{colUndefined, AttrUndefined},
+		PreviewScrollbar: ColorAttr{colUndefined, AttrUndefined},
+		PreviewLabel:     ColorAttr{colUndefined, AttrUndefined},
+		Separator:        ColorAttr{colUndefined, AttrUndefined},
+		Scrollbar:        ColorAttr{colUndefined, AttrUndefined},
+	}
 }
 
 func initTheme(theme *ColorTheme, baseTheme *ColorTheme, forceBlack bool) {
@@ -571,13 +798,9 @@ func initTheme(theme *ColorTheme, baseTheme *ColorTheme, forceBlack bool) {
 		return c
 	}
 	theme.Input = o(baseTheme.Input, theme.Input)
-	theme.Disabled = o(theme.Input, o(baseTheme.Disabled, theme.Disabled))
 	theme.Fg = o(baseTheme.Fg, theme.Fg)
 	theme.Bg = o(baseTheme.Bg, theme.Bg)
-	theme.PreviewFg = o(theme.Fg, o(baseTheme.PreviewFg, theme.PreviewFg))
-	theme.PreviewBg = o(theme.Bg, o(baseTheme.PreviewBg, theme.PreviewBg))
 	theme.DarkBg = o(baseTheme.DarkBg, theme.DarkBg)
-	theme.Gutter = o(theme.DarkBg, o(baseTheme.Gutter, theme.Gutter))
 	theme.Prompt = o(baseTheme.Prompt, theme.Prompt)
 	theme.Match = o(baseTheme.Match, theme.Match)
 	theme.Current = o(baseTheme.Current, theme.Current)
@@ -585,9 +808,24 @@ func initTheme(theme *ColorTheme, baseTheme *ColorTheme, forceBlack bool) {
 	theme.Spinner = o(baseTheme.Spinner, theme.Spinner)
 	theme.Info = o(baseTheme.Info, theme.Info)
 	theme.Cursor = o(baseTheme.Cursor, theme.Cursor)
-	theme.Selected = o(baseTheme.Selected, theme.Selected)
+	theme.Marker = o(baseTheme.Marker, theme.Marker)
 	theme.Header = o(baseTheme.Header, theme.Header)
 	theme.Border = o(baseTheme.Border, theme.Border)
+	theme.BorderLabel = o(baseTheme.BorderLabel, theme.BorderLabel)
+
+	// These colors are not defined in the base themes
+	theme.SelectedFg = o(theme.Fg, theme.SelectedFg)
+	theme.SelectedBg = o(theme.Bg, theme.SelectedBg)
+	theme.SelectedMatch = o(theme.Match, theme.SelectedMatch)
+	theme.Disabled = o(theme.Input, theme.Disabled)
+	theme.Gutter = o(theme.DarkBg, theme.Gutter)
+	theme.PreviewFg = o(theme.Fg, theme.PreviewFg)
+	theme.PreviewBg = o(theme.Bg, theme.PreviewBg)
+	theme.PreviewLabel = o(theme.BorderLabel, theme.PreviewLabel)
+	theme.PreviewBorder = o(theme.Border, theme.PreviewBorder)
+	theme.Separator = o(theme.Border, theme.Separator)
+	theme.Scrollbar = o(theme.Border, theme.Scrollbar)
+	theme.PreviewScrollbar = o(theme.PreviewBorder, theme.PreviewScrollbar)
 
 	initPalette(theme)
 }
@@ -604,22 +842,38 @@ func initPalette(theme *ColorTheme) {
 
 	ColPrompt = pair(theme.Prompt, theme.Bg)
 	ColNormal = pair(theme.Fg, theme.Bg)
+	ColSelected = pair(theme.SelectedFg, theme.SelectedBg)
 	ColInput = pair(theme.Input, theme.Bg)
 	ColDisabled = pair(theme.Disabled, theme.Bg)
 	ColMatch = pair(theme.Match, theme.Bg)
+	ColSelectedMatch = pair(theme.SelectedMatch, theme.SelectedBg)
 	ColCursor = pair(theme.Cursor, theme.Gutter)
 	ColCursorEmpty = pair(blank, theme.Gutter)
-	ColSelected = pair(theme.Selected, theme.Gutter)
+	if theme.SelectedBg.Color != theme.Bg.Color {
+		ColMarker = pair(theme.Marker, theme.SelectedBg)
+	} else {
+		ColMarker = pair(theme.Marker, theme.Gutter)
+	}
 	ColCurrent = pair(theme.Current, theme.DarkBg)
 	ColCurrentMatch = pair(theme.CurrentMatch, theme.DarkBg)
 	ColCurrentCursor = pair(theme.Cursor, theme.DarkBg)
 	ColCurrentCursorEmpty = pair(blank, theme.DarkBg)
-	ColCurrentSelected = pair(theme.Selected, theme.DarkBg)
+	ColCurrentMarker = pair(theme.Marker, theme.DarkBg)
 	ColCurrentSelectedEmpty = pair(blank, theme.DarkBg)
 	ColSpinner = pair(theme.Spinner, theme.Bg)
 	ColInfo = pair(theme.Info, theme.Bg)
 	ColHeader = pair(theme.Header, theme.Bg)
+	ColSeparator = pair(theme.Separator, theme.Bg)
+	ColScrollbar = pair(theme.Scrollbar, theme.Bg)
 	ColBorder = pair(theme.Border, theme.Bg)
+	ColBorderLabel = pair(theme.BorderLabel, theme.Bg)
+	ColPreviewLabel = pair(theme.PreviewLabel, theme.PreviewBg)
 	ColPreview = pair(theme.PreviewFg, theme.PreviewBg)
-	ColPreviewBorder = pair(theme.Border, theme.PreviewBg)
+	ColPreviewBorder = pair(theme.PreviewBorder, theme.PreviewBg)
+	ColPreviewScrollbar = pair(theme.PreviewScrollbar, theme.PreviewBg)
+	ColPreviewSpinner = pair(theme.Spinner, theme.PreviewBg)
+}
+
+func runeWidth(r rune) int {
+	return uniseg.StringWidth(string(r))
 }

src/util/atexit.go

@@ -0,0 +1,28 @@
+package util
+
+import (
+	"sync"
+)
+
+var atExitFuncs []func()
+
+// AtExit registers the function fn to be called on program termination.
+// The functions will be called in reverse order they were registered.
+func AtExit(fn func()) {
+	if fn == nil {
+		panic("AtExit called with nil func")
+	}
+	once := &sync.Once{}
+	atExitFuncs = append(atExitFuncs, func() {
+		once.Do(fn)
+	})
+}
+
+// RunAtExitFuncs runs any functions registered with AtExit().
+func RunAtExitFuncs() {
+	fns := atExitFuncs
+	for i := len(fns) - 1; i >= 0; i-- {
+		fns[i]()
+	}
+	atExitFuncs = nil
+}

src/util/atexit_test.go

@@ -0,0 +1,24 @@
+package util
+
+import (
+	"reflect"
+	"testing"
+)
+
+func TestAtExit(t *testing.T) {
+	want := []int{3, 2, 1, 0}
+	var called []int
+	for i := 0; i < 4; i++ {
+		n := i
+		AtExit(func() { called = append(called, n) })
+	}
+	RunAtExitFuncs()
+	if !reflect.DeepEqual(called, want) {
+		t.Errorf("AtExit: want call order: %v got: %v", want, called)
+	}
+
+	RunAtExitFuncs()
+	if !reflect.DeepEqual(called, want) {
+		t.Error("AtExit: should only call exit funcs once")
+	}
+}

src/util/chars.go

@@ -1,6 +1,7 @@
 package util
 
 import (
+	"bytes"
 	"fmt"
 	"unicode"
 	"unicode/utf8"
@@ -74,6 +75,35 @@ func (chars *Chars) Bytes() []byte {
 	return chars.slice
 }
 
+func (chars *Chars) NumLines(atMost int) (int, bool) {
+	lines := 1
+	if runes := chars.optionalRunes(); runes != nil {
+		for _, r := range runes {
+			if r == '\n' {
+				lines++
+			}
+			if lines > atMost {
+				return atMost, true
+			}
+		}
+		return lines, false
+	}
+
+	for idx := 0; idx < len(chars.slice); idx++ {
+		found := bytes.IndexByte(chars.slice[idx:], '\n')
+		if found < 0 {
+			break
+		}
+
+		idx += found
+		lines++
+		if lines > atMost {
+			return atMost, true
+		}
+	}
+	return lines, false
+}
+
 func (chars *Chars) optionalRunes() []rune {
 	if chars.inBytes {
 		return nil
@@ -163,7 +193,7 @@ func (chars *Chars) ToString() string {
 	if runes := chars.optionalRunes(); runes != nil {
 		return string(runes)
 	}
-	return string(chars.slice)
+	return unsafe.String(unsafe.SliceData(chars.slice), len(chars.slice))
 }
 
 func (chars *Chars) ToRunes() []rune {
@@ -178,12 +208,12 @@ func (chars *Chars) ToRunes() []rune {
 	return runes
 }
 
-func (chars *Chars) CopyRunes(dest []rune) {
+func (chars *Chars) CopyRunes(dest []rune, from int) {
 	if runes := chars.optionalRunes(); runes != nil {
-		copy(dest, runes)
+		copy(dest, runes[from:])
 		return
 	}
-	for idx, b := range chars.slice[:len(dest)] {
+	for idx, b := range chars.slice[from:][:len(dest)] {
 		dest[idx] = rune(b)
 	}
 }
@@ -196,3 +226,85 @@ func (chars *Chars) Prepend(prefix string) {
 		chars.slice = append([]byte(prefix), chars.slice...)
 	}
 }
+
+func (chars *Chars) Lines(multiLine bool, maxLines int, wrapCols int, wrapSignWidth int, tabstop int) ([][]rune, bool) {
+	text := make([]rune, chars.Length())
+	copy(text, chars.ToRunes())
+
+	lines := [][]rune{}
+	overflow := false
+	if !multiLine {
+		lines = append(lines, text)
+	} else {
+		from := 0
+		for off := 0; off < len(text); off++ {
+			if text[off] == '\n' {
+				lines = append(lines, text[from:off+1]) // Include '\n'
+				from = off + 1
+				if len(lines) >= maxLines {
+					break
+				}
+			}
+		}
+
+		var lastLine []rune
+		if from < len(text) {
+			lastLine = text[from:]
+		}
+
+		overflow = false
+		if len(lines) >= maxLines {
+			overflow = true
+		} else {
+			lines = append(lines, lastLine)
+		}
+	}
+
+	// If wrapping is disabled, we're done
+	if wrapCols == 0 {
+		return lines, overflow
+	}
+
+	wrapped := [][]rune{}
+	for _, line := range lines {
+		// Remove trailing '\n' and remember if it was there
+		newline := len(line) > 0 && line[len(line)-1] == '\n'
+		if newline {
+			line = line[:len(line)-1]
+		}
+
+		for {
+			cols := wrapCols
+			if len(wrapped) > 0 {
+				cols -= wrapSignWidth
+			}
+			_, overflowIdx := RunesWidth(line, 0, tabstop, cols)
+			if overflowIdx >= 0 {
+				// Might be a wide character
+				if overflowIdx == 0 {
+					overflowIdx = 1
+				}
+				if len(wrapped) >= maxLines {
+					return wrapped, true
+				}
+				wrapped = append(wrapped, line[:overflowIdx])
+				line = line[overflowIdx:]
+				continue
+			}
+
+			// Restore trailing '\n'
+			if newline {
+				line = append(line, '\n')
+			}
+
+			if len(wrapped) >= maxLines {
+				return wrapped, true
+			}
+
+			wrapped = append(wrapped, line)
+			break
+		}
+	}
+
+	return wrapped, false
+}

src/util/chars_test.go

@@ -1,6 +1,9 @@
 package util
 
-import "testing"
+import (
+	"fmt"
+	"testing"
+)
 
 func TestToCharsAscii(t *testing.T) {
 	chars := ToChars([]byte("foobar"))
@@ -44,3 +47,37 @@ func TestTrimLength(t *testing.T) {
 	check("  h   o  ", 5)
 	check("         ", 0)
 }
+
+func TestCharsLines(t *testing.T) {
+	chars := ToChars([]byte("abcdef\n가나다\n\tdef"))
+	check := func(multiLine bool, maxLines int, wrapCols int, wrapSignWidth int, tabstop int, expectedNumLines int, expectedOverflow bool) {
+		lines, overflow := chars.Lines(multiLine, maxLines, wrapCols, wrapSignWidth, tabstop)
+		fmt.Println(lines, overflow)
+		if len(lines) != expectedNumLines || overflow != expectedOverflow {
+			t.Errorf("Invalid result: %d %v (expected %d %v)", len(lines), overflow, expectedNumLines, expectedOverflow)
+		}
+	}
+
+	// No wrap
+	check(true, 1, 0, 0, 8, 1, true)
+	check(true, 2, 0, 0, 8, 2, true)
+	check(true, 3, 0, 0, 8, 3, false)
+
+	// Wrap (2)
+	check(true, 4, 2, 0, 8, 4, true)
+	check(true, 5, 2, 0, 8, 5, true)
+	check(true, 6, 2, 0, 8, 6, true)
+	check(true, 7, 2, 0, 8, 7, true)
+	check(true, 8, 2, 0, 8, 8, true)
+	check(true, 9, 2, 0, 8, 9, false)
+	check(true, 9, 2, 0, 1, 8, false) // Smaller tab size
+
+	// With wrap sign (3 + 1)
+	check(true, 100, 3, 1, 1, 8, false)
+
+	// With wrap sign (3 + 2)
+	check(true, 100, 3, 2, 1, 12, false)
+
+	// With wrap sign (3 + 2) and no multi-line
+	check(false, 100, 3, 2, 1, 13, false)
+}

src/util/eventbox_test.go

@@ -9,7 +9,6 @@ const (
 	EvtSearchNew
 	EvtSearchProgress
 	EvtSearchFin
-	EvtClose
 )
 
 func TestEventBox(t *testing.T) {

src/util/util.go

@@ -3,14 +3,19 @@ package util
 import (
 	"math"
 	"os"
+	"strconv"
 	"strings"
 	"time"
 
 	"github.com/mattn/go-isatty"
-	"github.com/mattn/go-runewidth"
 	"github.com/rivo/uniseg"
 )
 
+// StringWidth returns string width where each CR/LF character takes 1 column
+func StringWidth(s string) int {
+	return uniseg.StringWidth(s) + strings.Count(s, "\n") + strings.Count(s, "\r")
+}
+
 // RunesWidth returns runes width
 func RunesWidth(runes []rune, prefixWidth int, tabstop int, limit int) (int, int) {
 	width := 0
@@ -22,8 +27,7 @@ func RunesWidth(runes []rune, prefixWidth int, tabstop int, limit int) (int, int
 		if len(rs) == 1 && rs[0] == '\t' {
 			w = tabstop - (prefixWidth+width)%tabstop
 		} else {
-			s := string(rs)
+			w = StringWidth(string(rs))
-			w = runewidth.StringWidth(s) + strings.Count(s, "\n")
 		}
 		width += w
 		if width > limit {
@@ -41,7 +45,7 @@ func Truncate(input string, limit int) ([]rune, int) {
 	gr := uniseg.NewGraphemes(input)
 	for gr.Next() {
 		rs := gr.Runes()
-		w := runewidth.StringWidth(string(rs))
+		w := StringWidth(string(rs))
 		if width+w > limit {
 			return runes, width
 		}
@@ -134,14 +138,20 @@ func DurWithin(
 	return val
 }
 
-// IsTty returns true if stdin is a terminal
+// IsTty returns true if the file is a terminal
-func IsTty() bool {
+func IsTty(file *os.File) bool {
-	return isatty.IsTerminal(os.Stdin.Fd())
+	fd := file.Fd()
+	return isatty.IsTerminal(fd) || isatty.IsCygwinTerminal(fd)
 }
 
-// ToTty returns true if stdout is a terminal
+// RunOnce runs the given function only once
-func ToTty() bool {
+func RunOnce(f func()) func() {
-	return isatty.IsTerminal(os.Stdout.Fd())
+	once := Once(true)
+	return func() {
+		if once() {
+			f()
+		}
+	}
 }
 
 // Once returns a function that returns the specified boolean value only once
@@ -149,7 +159,70 @@ func Once(nextResponse bool) func() bool {
 	state := nextResponse
 	return func() bool {
 		prevState := state
-		state = false
+		state = !nextResponse
 		return prevState
 	}
 }
+
+// RepeatToFill repeats the given string to fill the given width
+func RepeatToFill(str string, length int, limit int) string {
+	times := limit / length
+	rest := limit % length
+	output := strings.Repeat(str, times)
+	if rest > 0 {
+		for _, r := range str {
+			rest -= uniseg.StringWidth(string(r))
+			if rest < 0 {
+				break
+			}
+			output += string(r)
+			if rest == 0 {
+				break
+			}
+		}
+	}
+	return output
+}
+
+// ToKebabCase converts the given CamelCase string to kebab-case
+func ToKebabCase(s string) string {
+	name := ""
+	for i, r := range s {
+		if i > 0 && r >= 'A' && r <= 'Z' {
+			name += "-"
+		}
+		name += string(r)
+	}
+	return strings.ToLower(name)
+}
+
+// CompareVersions compares two version strings
+func CompareVersions(v1, v2 string) int {
+	parts1 := strings.Split(v1, ".")
+	parts2 := strings.Split(v2, ".")
+
+	atoi := func(s string) int {
+		n, e := strconv.Atoi(s)
+		if e != nil {
+			return 0
+		}
+		return n
+	}
+
+	for i := 0; i < Max(len(parts1), len(parts2)); i++ {
+		var p1, p2 int
+		if i < len(parts1) {
+			p1 = atoi(parts1[i])
+		}
+		if i < len(parts2) {
+			p2 = atoi(parts2[i])
+		}
+
+		if p1 > p2 {
+			return 1
+		} else if p1 < p2 {
+			return -1
+		}
+	}
+	return 0
+}

src/util/util_test.go

@@ -1,14 +1,76 @@
 package util
 
-import "testing"
+import (
+	"math"
+	"strings"
+	"testing"
+	"time"
+)
 
 func TestMax(t *testing.T) {
+	if Max(10, 1) != 10 {
+		t.Error("Expected", 10)
+	}
 	if Max(-2, 5) != 5 {
-		t.Error("Invalid result")
+		t.Error("Expected", 5)
 	}
 }
 
-func TestContrain(t *testing.T) {
+func TestMax16(t *testing.T) {
+	if Max16(10, 1) != 10 {
+		t.Error("Expected", 10)
+	}
+	if Max16(-2, 5) != 5 {
+		t.Error("Expected", 5)
+	}
+	if Max16(math.MaxInt16, 0) != math.MaxInt16 {
+		t.Error("Expected", math.MaxInt16)
+	}
+	if Max16(0, math.MinInt16) != 0 {
+		t.Error("Expected", 0)
+	}
+}
+
+func TestMax32(t *testing.T) {
+	if Max32(10, 1) != 10 {
+		t.Error("Expected", 10)
+	}
+	if Max32(-2, 5) != 5 {
+		t.Error("Expected", 5)
+	}
+	if Max32(math.MaxInt32, 0) != math.MaxInt32 {
+		t.Error("Expected", math.MaxInt32)
+	}
+	if Max32(0, math.MinInt32) != 0 {
+		t.Error("Expected", 0)
+	}
+}
+
+func TestMin(t *testing.T) {
+	if Min(10, 1) != 1 {
+		t.Error("Expected", 1)
+	}
+	if Min(-2, 5) != -2 {
+		t.Error("Expected", -2)
+	}
+}
+
+func TestMin32(t *testing.T) {
+	if Min32(10, 1) != 1 {
+		t.Error("Expected", 1)
+	}
+	if Min32(-2, 5) != -2 {
+		t.Error("Expected", -2)
+	}
+	if Min32(math.MaxInt32, 0) != 0 {
+		t.Error("Expected", 0)
+	}
+	if Min32(0, math.MinInt32) != math.MinInt32 {
+		t.Error("Expected", math.MinInt32)
+	}
+}
+
+func TestConstrain(t *testing.T) {
 	if Constrain(-3, -1, 3) != -1 {
 		t.Error("Expected", -1)
 	}
@@ -21,13 +83,65 @@ func TestContrain(t *testing.T) {
 	}
 }
 
+func TestConstrain32(t *testing.T) {
+	if Constrain32(-3, -1, 3) != -1 {
+		t.Error("Expected", -1)
+	}
+	if Constrain32(2, -1, 3) != 2 {
+		t.Error("Expected", 2)
+	}
+
+	if Constrain32(5, -1, 3) != 3 {
+		t.Error("Expected", 3)
+	}
+	if Constrain32(0, math.MinInt32, math.MaxInt32) != 0 {
+		t.Error("Expected", 0)
+	}
+}
+
+func TestAsUint16(t *testing.T) {
+	if AsUint16(5) != 5 {
+		t.Error("Expected", 5)
+	}
+	if AsUint16(-10) != 0 {
+		t.Error("Expected", 0)
+	}
+	if AsUint16(math.MaxUint16) != math.MaxUint16 {
+		t.Error("Expected", math.MaxUint16)
+	}
+	if AsUint16(math.MinInt32) != 0 {
+		t.Error("Expected", 0)
+	}
+	if AsUint16(math.MinInt16) != 0 {
+		t.Error("Expected", 0)
+	}
+	if AsUint16(math.MaxUint16+1) != math.MaxUint16 {
+		t.Error("Expected", math.MaxUint16)
+	}
+}
+
+func TestDurWithIn(t *testing.T) {
+	if DurWithin(time.Duration(5), time.Duration(1), time.Duration(8)) != time.Duration(5) {
+		t.Error("Expected", time.Duration(0))
+	}
+	if DurWithin(time.Duration(0)*time.Second, time.Second, time.Duration(3)*time.Second) != time.Second {
+		t.Error("Expected", time.Second)
+	}
+	if DurWithin(time.Duration(10)*time.Second, time.Duration(0), time.Second) != time.Second {
+		t.Error("Expected", time.Second)
+	}
+}
+
 func TestOnce(t *testing.T) {
 	o := Once(false)
 	if o() {
 		t.Error("Expected: false")
 	}
-	if o() {
+	if !o() {
-		t.Error("Expected: false")
+		t.Error("Expected: true")
+	}
+	if !o() {
+		t.Error("Expected: true")
 	}
 
 	o = Once(true)
@@ -37,6 +151,9 @@ func TestOnce(t *testing.T) {
 	if o() {
 		t.Error("Expected: false")
 	}
+	if o() {
+		t.Error("Expected: false")
+	}
 }
 
 func TestRunesWidth(t *testing.T) {
@@ -53,6 +170,18 @@ func TestRunesWidth(t *testing.T) {
 			t.Errorf("Expected overflow index: %d, actual: %d", args[2], overflowIdx)
 		}
 	}
+	for _, input := range []struct {
+		s string
+		w int
+	}{
+		{"▶", 1},
+		{"▶️", 2},
+	} {
+		width, _ := RunesWidth([]rune(input.s), 0, 0, 100)
+		if width != input.w {
+			t.Errorf("Expected width of %s: %d, actual: %d", input.s, input.w, width)
+		}
+	}
 }
 
 func TestTruncate(t *testing.T) {
@@ -64,3 +193,50 @@ func TestTruncate(t *testing.T) {
 		t.Errorf("Expected: 6, actual: %d", width)
 	}
 }
+
+func TestRepeatToFill(t *testing.T) {
+	if RepeatToFill("abcde", 10, 50) != strings.Repeat("abcde", 5) {
+		t.Error("Expected:", strings.Repeat("abcde", 5))
+	}
+	if RepeatToFill("abcde", 10, 42) != strings.Repeat("abcde", 4)+"abcde"[:2] {
+		t.Error("Expected:", strings.Repeat("abcde", 4)+"abcde"[:2])
+	}
+}
+
+func TestStringWidth(t *testing.T) {
+	w := StringWidth("─")
+	if w != 1 {
+		t.Errorf("Expected: %d, Actual: %d", 1, w)
+	}
+}
+
+func TestCompareVersions(t *testing.T) {
+	assert := func(a, b string, expected int) {
+		if result := CompareVersions(a, b); result != expected {
+			t.Errorf("Expected: %d, Actual: %d", expected, result)
+		}
+	}
+
+	assert("2", "1", 1)
+	assert("2", "2", 0)
+	assert("2", "10", -1)
+
+	assert("2.1", "2.2", -1)
+	assert("2.1", "2.1.1", -1)
+
+	assert("1.2.3", "1.2.2", 1)
+	assert("1.2.3", "1.2.3", 0)
+	assert("1.2.3", "1.2.3.0", 0)
+	assert("1.2.3", "1.2.4", -1)
+
+	// Different number of parts
+	assert("1.0.0", "1", 0)
+	assert("1.0.0", "1.0", 0)
+	assert("1.0.0", "1.0.0", 0)
+	assert("1.0", "1.0.0", 0)
+	assert("1", "1.0.0", 0)
+	assert("1.0.0", "1.0.0.1", -1)
+	assert("1.0.0.1.0", "1.0.0.1", 0)
+
+	assert("", "3.4.5", -1)
+}

src/util/util_unix.go

@@ -3,29 +3,71 @@
 package util
 
 import (
+	"fmt"
 	"os"
 	"os/exec"
+	"strings"
 	"syscall"
+
+	"golang.org/x/sys/unix"
 )
 
-// ExecCommand executes the given command with $SHELL
+type Executor struct {
-func ExecCommand(command string, setpgid bool) *exec.Cmd {
+	shell   string
-	shell := os.Getenv("SHELL")
+	args    []string
-	if len(shell) == 0 {
+	escaper *strings.Replacer
-		shell = "sh"
-	}
-	return ExecCommandWith(shell, command, setpgid)
 }
 
-// ExecCommandWith executes the given command with the specified shell
+func NewExecutor(withShell string) *Executor {
-func ExecCommandWith(shell string, command string, setpgid bool) *exec.Cmd {
+	shell := os.Getenv("SHELL")
-	cmd := exec.Command(shell, "-c", command)
+	args := strings.Fields(withShell)
+	if len(args) > 0 {
+		shell = args[0]
+		args = args[1:]
+	} else {
+		if len(shell) == 0 {
+			shell = "sh"
+		}
+		args = []string{"-c"}
+	}
+
+	var escaper *strings.Replacer
+	tokens := strings.Split(shell, "/")
+	if tokens[len(tokens)-1] == "fish" {
+		// https://fishshell.com/docs/current/language.html#quotes
+		// > The only meaningful escape sequences in single quotes are \', which
+		// > escapes a single quote and \\, which escapes the backslash symbol.
+		escaper = strings.NewReplacer("\\", "\\\\", "'", "\\'")
+	} else {
+		escaper = strings.NewReplacer("'", "'\\''")
+	}
+	return &Executor{shell, args, escaper}
+}
+
+// ExecCommand executes the given command with $SHELL
+func (x *Executor) ExecCommand(command string, setpgid bool) *exec.Cmd {
+	cmd := exec.Command(x.shell, append(x.args, command)...)
 	if setpgid {
 		cmd.SysProcAttr = &syscall.SysProcAttr{Setpgid: true}
 	}
 	return cmd
 }
 
+func (x *Executor) QuoteEntry(entry string) string {
+	return "'" + x.escaper.Replace(entry) + "'"
+}
+
+func (x *Executor) Become(stdin *os.File, environ []string, command string) {
+	shellPath, err := exec.LookPath(x.shell)
+	if err != nil {
+		fmt.Fprintf(os.Stderr, "fzf (become): %s\n", err.Error())
+		os.Exit(127)
+	}
+	args := append([]string{shellPath}, append(x.args, command)...)
+	SetStdin(stdin)
+	syscall.Exec(shellPath, args, environ)
+}
+
 // KillCommand kills the process for the given command
 func KillCommand(cmd *exec.Cmd) error {
 	return syscall.Kill(-cmd.Process.Pid, syscall.SIGKILL)
@@ -45,3 +87,7 @@ func SetNonblock(file *os.File, nonblock bool) {
 func Read(fd int, b []byte) (int, error) {
 	return syscall.Read(int(fd), b)
 }
+
+func SetStdin(file *os.File) {
+	unix.Dup2(int(file.Fd()), 0)
+}

src/util/util_windows.go

@@ -6,62 +6,164 @@ import (
 	"fmt"
 	"os"
 	"os/exec"
+	"path/filepath"
+	"regexp"
 	"strings"
 	"sync/atomic"
 	"syscall"
 )
 
-var shellPath atomic.Value
+type shellType int
+
+const (
+	shellTypeUnknown shellType = iota
+	shellTypeCmd
+	shellTypePowerShell
+)
+
+var escapeRegex = regexp.MustCompile(`[&|<>()^%!"]`)
+
+type Executor struct {
+	shell     string
+	shellType shellType
+	args      []string
+	shellPath atomic.Value
+}
+
+func NewExecutor(withShell string) *Executor {
+	shell := os.Getenv("SHELL")
+	args := strings.Fields(withShell)
+	if len(args) > 0 {
+		shell = args[0]
+	} else if len(shell) == 0 {
+		shell = "cmd"
+	}
+
+	shellType := shellTypeUnknown
+	basename := filepath.Base(shell)
+	if len(args) > 0 {
+		args = args[1:]
+	} else if strings.HasPrefix(basename, "cmd") {
+		shellType = shellTypeCmd
+		args = []string{"/s/c"}
+	} else if strings.HasPrefix(basename, "pwsh") || strings.HasPrefix(basename, "powershell") {
+		shellType = shellTypePowerShell
+		args = []string{"-NoProfile", "-Command"}
+	} else {
+		args = []string{"-c"}
+	}
+	return &Executor{shell: shell, shellType: shellType, args: args}
+}
 
 // ExecCommand executes the given command with $SHELL
-func ExecCommand(command string, setpgid bool) *exec.Cmd {
+// FIXME: setpgid is unused. We set it in the Unix implementation so that we
-	var shell string
+// can kill preview process with its child processes at once.
-	if cached := shellPath.Load(); cached != nil {
+// NOTE: For "powershell", we should ideally set output encoding to UTF8,
+// but it is left as is now because no adverse effect has been observed.
+func (x *Executor) ExecCommand(command string, setpgid bool) *exec.Cmd {
+	shell := x.shell
+	if cached := x.shellPath.Load(); cached != nil {
 		shell = cached.(string)
 	} else {
-		shell = os.Getenv("SHELL")
+		if strings.Contains(shell, "/") {
-		if len(shell) == 0 {
-			shell = "cmd"
-		} else if strings.Contains(shell, "/") {
 			out, err := exec.Command("cygpath", "-w", shell).Output()
 			if err == nil {
 				shell = strings.Trim(string(out), "\n")
 			}
 		}
-		shellPath.Store(shell)
+		x.shellPath.Store(shell)
 	}
-	return ExecCommandWith(shell, command, setpgid)
-}
-
-// ExecCommandWith executes the given command with the specified shell
-// FIXME: setpgid is unused. We set it in the Unix implementation so that we
-// can kill preview process with its child processes at once.
-// NOTE: For "powershell", we should ideally set output encoding to UTF8,
-// but it is left as is now because no adverse effect has been observed.
-func ExecCommandWith(shell string, command string, setpgid bool) *exec.Cmd {
 	var cmd *exec.Cmd
-	if strings.Contains(shell, "cmd") {
+	if x.shellType == shellTypeCmd {
 		cmd = exec.Command(shell)
 		cmd.SysProcAttr = &syscall.SysProcAttr{
 			HideWindow:    false,
-			CmdLine:       fmt.Sprintf(` /v:on/s/c "%s"`, command),
+			CmdLine:       fmt.Sprintf(`%s "%s"`, strings.Join(x.args, " "), command),
 			CreationFlags: 0,
 		}
-		return cmd
-	}
-
-	if strings.Contains(shell, "pwsh") || strings.Contains(shell, "powershell") {
-		cmd = exec.Command(shell, "-NoProfile", "-Command", command)
 	} else {
-		cmd = exec.Command(shell, "-c", command)
+		cmd = exec.Command(shell, append(x.args, command)...)
-	}
+		cmd.SysProcAttr = &syscall.SysProcAttr{
-	cmd.SysProcAttr = &syscall.SysProcAttr{
+			HideWindow:    false,
-		HideWindow:    false,
+			CreationFlags: 0,
-		CreationFlags: 0,
+		}
 	}
 	return cmd
 }
 
+func (x *Executor) Become(stdin *os.File, environ []string, command string) {
+	cmd := x.ExecCommand(command, false)
+	cmd.Stdin = stdin
+	cmd.Stdout = os.Stdout
+	cmd.Stderr = os.Stderr
+	cmd.Env = environ
+	err := cmd.Start()
+	if err != nil {
+		fmt.Fprintf(os.Stderr, "fzf (become): %s\n", err.Error())
+		os.Exit(127)
+	}
+	err = cmd.Wait()
+	if err != nil {
+		if exitError, ok := err.(*exec.ExitError); ok {
+			os.Exit(exitError.ExitCode())
+		}
+	}
+	os.Exit(0)
+}
+
+func escapeArg(s string) string {
+	b := make([]byte, 0, len(s)+2)
+	b = append(b, '"')
+	slashes := 0
+	for i := 0; i < len(s); i++ {
+		c := s[i]
+		switch c {
+		default:
+			slashes = 0
+		case '\\':
+			slashes++
+		case '"':
+			for ; slashes > 0; slashes-- {
+				b = append(b, '\\')
+			}
+			b = append(b, '\\')
+		}
+		b = append(b, c)
+	}
+	for ; slashes > 0; slashes-- {
+		b = append(b, '\\')
+	}
+	b = append(b, '"')
+	return escapeRegex.ReplaceAllStringFunc(string(b), func(match string) string {
+		return "^" + match
+	})
+}
+
+func (x *Executor) QuoteEntry(entry string) string {
+	switch x.shellType {
+	case shellTypeCmd:
+		/* Manually tested with the following commands:
+		   fzf --preview "echo {}"
+		   fzf --preview "type {}"
+		   echo .git\refs\| fzf --preview "dir {}"
+		   echo .git\refs\\| fzf --preview "dir {}"
+		   echo .git\refs\\\| fzf --preview "dir {}"
+		   reg query HKCU | fzf --reverse --bind "enter:reload(reg query {})"
+		   fzf --disabled --preview "echo {q} {n} {}" --query "&|<>()@^%!"
+		   fd -H --no-ignore -td -d 4 | fzf --preview "dir {}"
+		   fd -H --no-ignore -td -d 4 | fzf --preview "eza {}" --preview-window up
+		   fd -H --no-ignore -td -d 4 | fzf --preview "eza --color=always --tree --level=3 --icons=always {}"
+		   fd -H --no-ignore -td -d 4 | fzf --preview ".\eza.exe --color=always --tree --level=3 --icons=always {}" --with-shell "powershell -NoProfile -Command"
+		*/
+		return escapeArg(entry)
+	case shellTypePowerShell:
+		escaped := strings.ReplaceAll(entry, `"`, `\"`)
+		return "'" + strings.ReplaceAll(escaped, "'", "''") + "'"
+	default:
+		return "'" + strings.ReplaceAll(entry, "'", "'\\''") + "'"
+	}
+}
+
 // KillCommand kills the process for the given command
 func KillCommand(cmd *exec.Cmd) error {
 	return cmd.Process.Kill()
@@ -81,3 +183,7 @@ func SetNonblock(file *os.File, nonblock bool) {
 func Read(fd int, b []byte) (int, error) {
 	return syscall.Read(syscall.Handle(fd), b)
 }
+
+func SetStdin(file *os.File) {
+	// No-op
+}

src/winpty.go

@@ -0,0 +1,13 @@
+//go:build !windows
+
+package fzf
+
+import "errors"
+
+func needWinpty(_ *Options) bool {
+	return false
+}
+
+func runWinpty(_ []string, _ *Options) (int, error) {
+	return ExitError, errors.New("Not supported")
+}