0.51.0

Fix #3620

.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

@@ -27,7 +27,7 @@ jobs:
 
     steps:
     - name: Checkout repository
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
       with:
         fetch-depth: 0
 

.github/workflows/depsreview.yaml

@@ -9,6 +9,6 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: 'Checkout Repository'
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       - name: 'Dependency Review'
         uses: actions/dependency-review-action@v4

.github/workflows/linux.yml

@@ -18,14 +18,14 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
       with:
         fetch-depth: 0
 
     - name: Set up Go
       uses: actions/setup-go@v5
       with:
-        go-version: 1.19
+        go-version: "1.20"
 
     - name: Setup Ruby
       uses: ruby/setup-ruby@v1

.github/workflows/macos.yml

@@ -15,14 +15,14 @@ jobs:
   build:
     runs-on: macos-latest
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
       with:
         fetch-depth: 0
 
     - name: Set up Go
       uses: actions/setup-go@v5
       with:
-        go-version: 1.18
+        go-version: "1.20"
 
     - name: Setup Ruby
       uses: ruby/setup-ruby@v1

.github/workflows/sponsors.yml

@@ -9,7 +9,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout 🛎️
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Generate Sponsors 💖
         uses: JamesIves/github-sponsors-readme-action@v1

.github/workflows/typos.yml

@@ -6,5 +6,5 @@ jobs:
     name: Spell Check with Typos
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
-    - uses: crate-ci/typos@v1.17.2
+    - uses: crate-ci/typos@v1.20.10

.goreleaser.yml

@@ -12,6 +12,8 @@ builds:
       - darwin
     goarch:
       - amd64
+    flags:
+      - -trimpath
     ldflags:
       - "-s -w -X main.version={{ .Version }} -X main.revision={{ .ShortCommit }}"
     hooks:
@@ -19,11 +21,7 @@ builds:
         sh -c '
         cat > /tmp/fzf-gon-amd64.hcl << EOF
         source = ["./dist/fzf-macos_darwin_amd64_v1/fzf"]
-        bundle_id = "kr.junegunn.fzf"
+        bundle_id = "junegunn.fzf"
-        apple_id {
-          username = "junegunn.c@gmail.com"
-          password = "@env:AC_PASSWORD"
-        }
         sign {
           application_identity = "Developer ID Application: Junegunn Choi (Y254DRW44Z)"
         }
@@ -40,6 +38,8 @@ builds:
       - darwin
     goarch:
       - arm64
+    flags:
+      - -trimpath
     ldflags:
       - "-s -w -X main.version={{ .Version }} -X main.revision={{ .ShortCommit }}"
     hooks:
@@ -47,11 +47,7 @@ builds:
         sh -c '
         cat > /tmp/fzf-gon-arm64.hcl << EOF
         source = ["./dist/fzf-macos-arm_darwin_arm64/fzf"]
-        bundle_id = "kr.junegunn.fzf"
+        bundle_id = "junegunn.fzf"
-        apple_id {
-          username = "junegunn.c@gmail.com"
-          password = "@env:AC_PASSWORD"
-        }
         sign {
           application_identity = "Developer ID Application: Junegunn Choi (Y254DRW44Z)"
         }
@@ -79,6 +75,8 @@ builds:
       - 5
       - 6
       - 7
+    flags:
+      - -trimpath
     ldflags:
       - "-s -w -X main.version={{ .Version }} -X main.revision={{ .ShortCommit }}"
     ignore:

ADVANCED.md

@@ -552,7 +552,7 @@ 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`

BUILD.md

@@ -6,7 +6,7 @@ Build instructions
 
 ### Prerequisites
 
-- Go 1.18 or above
+- Go 1.20 or above
 
 ### Using Makefile
 
@@ -24,13 +24,23 @@ 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
 --------------------------
 
@@ -42,6 +52,8 @@ Third-party libraries used
     - 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
 -------

CHANGELOG.md

@@ -1,6 +1,187 @@
 CHANGELOG
 =========
 
+0.51.0
+------
+- Added a new environment variable `$FZF_POS` exported to the child processes. It's the vertical position of the cursor in the list starting from 1.
+  ```sh
+  # Toggle selection to the top or to the bottom
+  seq 30 | fzf --multi --bind 'load:pos(10)' \
+    --bind 'shift-up:transform:for _ in $(seq $FZF_POS $FZF_MATCH_COUNT); do echo -n +toggle+up; done' \
+    --bind 'shift-down:transform:for _ in $(seq 1 $FZF_POS); do echo -n +toggle+down; done'
+  ```
+- Added `--with-shell` option to start child processes with a custom shell command and flags
+  ```sh
+  gem list | fzf --with-shell 'ruby -e' \
+    --preview 'pp Gem::Specification.find_by_name({1})' \
+    --bind 'ctrl-o:execute-silent:
+        spec = Gem::Specification.find_by_name({1})
+        [spec.homepage, *spec.metadata.filter { _1.end_with?("uri") }.values].uniq.each do
+          system "open", _1
+        end
+    '
+  ```
+- Added `change-multi` action for dynamically changing `--multi` option
+    - `change-multi` - enable multi-select mode with no limit
+    - `change-multi(NUM)` - enable multi-select mode with a limit
+    - `change-multi(0)` - disable multi-select mode
+- Windows improvements
+    - `become` action is now supported on Windows
+        - Unlike in *nix, this does not use `execve(2)`. Instead it spawns a new process and waits for it to finish, so the exact behavior may differ.
+    - Fixed argument escaping for Windows cmd.exe. No redundant escaping of backslashes.
+- Bug fixes and improvements
+
+0.50.0
+------
+- Search performance optimization. You can observe 50%+ improvement in some scenarios.
+  ```
+  $ rg --line-number --no-heading --smart-case . > $DATA
+
+  $ wc < $DATA
+   5520118 26862362 897487793
+
+  $ hyperfine -w 1 -L bin fzf-0.49.0,fzf-7ce6452,fzf-a5447b8,fzf '{bin} --filter "///" < $DATA | head -30'
+  Summary
+    fzf --filter "///" < $DATA | head -30 ran
+      1.16 ± 0.03 times faster than fzf-a5447b8 --filter "///" < $DATA | head -30
+      1.23 ± 0.03 times faster than fzf-7ce6452 --filter "///" < $DATA | head -30
+      1.52 ± 0.03 times faster than fzf-0.49.0 --filter "///" < $DATA | head -30
+  ```
+- Added `jump` and `jump-cancel` events that are triggered when leaving `jump` mode
+  ```sh
+  # Default behavior
+  fzf --bind space:jump
+
+  # Same as jump-accept action
+  fzf --bind space:jump,jump:accept
+
+  # Accept on jump, abort on cancel
+  fzf --bind space:jump,jump:accept,jump-cancel:abort
+
+  # Change header on jump-cancel
+  fzf --bind 'space:change-header(Type jump label)+jump,jump-cancel:change-header:Jump cancelled'
+  ```
+- Added a new environment variable `$FZF_KEY` exported to the child processes. It's the name of the last key pressed.
+  ```sh
+  fzf --bind 'space:jump,jump:accept,jump-cancel:transform:[[ $FZF_KEY =~ ctrl-c ]] && echo abort'
+  ```
+- fzf can be built with profiling options. See [BUILD.md](BUILD.md) for more information.
+- Bug fixes
+
+0.49.0
+------
+- Ingestion performance improved by around 40% (more or less depending on options)
+- `--info=hidden` and `--info=inline-right` will no longer hide the horizontal separator by default. This gives you more flexibility in customizing the layout.
+    ```sh
+    fzf --border --info=inline-right
+    fzf --border --info=inline-right --separator ═
+    fzf --border --info=inline-right --no-separator
+    fzf --border --info=hidden
+    fzf --border --info=hidden --separator ━
+    fzf --border --info=hidden --no-separator
+    ```
+- Added two environment variables exported to the child processes
+    - `FZF_PREVIEW_LABEL`
+    - `FZF_BORDER_LABEL`
+    ```sh
+    # Use the current value of $FZF_PREVIEW_LABEL to determine which actions to perform
+    git ls-files |
+      fzf --header 'Press CTRL-P to change preview mode' \
+          --bind='ctrl-p:transform:[[ $FZF_PREVIEW_LABEL =~ cat ]] \
+          && echo "change-preview(git log --color=always \{})+change-preview-label([[ log ]])" \
+          || echo "change-preview(bat --color=always \{})+change-preview-label([[ cat ]])"'
+    ```
+- Renamed `track` action to `track-current` to highlight the difference between the global tracking state set by `--track` and a one-off tracking action
+    - `track` is still available as an alias
+- Added `untrack-current` and `toggle-track-current` actions
+    - `*-current` actions are no-op when the global tracking state is set
+- Bug fixes and minor improvements
+
+0.48.1
+------
+- CTRL-T and ALT-C bindings can be disabled by setting `FZF_CTRL_T_COMMAND` and `FZF_ALT_C_COMMAND` to empty strings respectively when sourcing the script
+    ```sh
+    # bash
+    FZF_CTRL_T_COMMAND= FZF_ALT_C_COMMAND= eval "$(fzf --bash)"
+
+    # zsh
+    FZF_CTRL_T_COMMAND= FZF_ALT_C_COMMAND= eval "$(fzf --zsh)"
+
+    # fish
+    fzf --fish | FZF_CTRL_T_COMMAND= FZF_ALT_C_COMMAND= source
+    ```
+    - Setting the variables after sourcing the script will have no effect
+- Bug fixes
+
+0.48.0
+------
+- Shell integration scripts are now embedded in the fzf binary. This simplifies the distribution, and the users are less likely to have problems caused by using incompatible scripts and binaries.
+    - bash
+      ```sh
+      # Set up fzf key bindings and fuzzy completion
+      eval "$(fzf --bash)"
+      ```
+    - zsh
+      ```sh
+      # Set up fzf key bindings and fuzzy completion
+      eval "$(fzf --zsh)"
+      ```
+    - fish
+      ```fish
+      # Set up fzf key bindings
+      fzf --fish | source
+      ```
+- Added options for customizing the behavior of the built-in walker
+    | Option               | Description                                       | Default              |
+    | ---                  | ---                                               | ---                  |
+    | `--walker=OPTS`      | Walker options (`[file][,dir][,follow][,hidden]`) | `file,follow,hidden` |
+    | `--walker-root=DIR`  | Root directory from which to start walker         | `.`                  |
+    | `--walker-skip=DIRS` | Comma-separated list of directory names to skip   | `.git,node_modules`  |
+    - Examples
+        ```sh
+        # Built-in walker is only used by standalone fzf when $FZF_DEFAULT_COMMAND is not set
+        unset FZF_DEFAULT_COMMAND
+
+        fzf # default: --walker=file,follow,hidden --walker-root=. --walker-skip=.git,node_modules
+        fzf --walker=file,dir,hidden,follow --walker-skip=.git,node_modules,target
+
+        # Walker options in $FZF_DEFAULT_OPTS
+        export FZF_DEFAULT_OPTS="--walker=file,dir,hidden,follow --walker-skip=.git,node_modules,target"
+        fzf
+
+        # Reading from STDIN; --walker is ignored
+        seq 100 | fzf --walker=dir
+
+        # Reading from $FZF_DEFAULT_COMMAND; --walker is ignored
+        export FZF_DEFAULT_COMMAND='seq 100'
+        fzf --walker=dir
+        ```
+- Shell integration scripts have been updated to use the built-in walker with these new options and they are now much faster out of the box.
+
+0.47.0
+------
+- Replaced ["the default find command"][find] with a built-in directory walker to simplify the code and to achieve better performance and consistent behavior across platforms.
+  This doesn't affect you if you have `$FZF_DEFAULT_COMMAND` set.
+    - Breaking changes:
+        - Unlike [the previous "find" command][find], the new traversal code will list hidden files, but hidden directories will still be ignored
+        - No filtering of `devtmpfs` or `proc` types
+        - Traversal is parallelized, so the order of the entries will be different each time
+    - You may wonder why fzf implements directory walker anyway when it's a filter program following the [Unix philosophy][unix].
+      But fzf has had [the walker code for years][walker] to tackle the performance problem on Windows. And I decided to use the same approach on different platforms as well for the benefits listed above.
+    - Built-in walker is using the excellent [charlievieth/fastwalk][fastwalk] library, which easily outperforms its competitors and supports safely following symlinks.
+- Added `$FZF_DEFAULT_OPTS_FILE` to allow managing default options in a file
+    - See [#3618](https://github.com/junegunn/fzf/pull/3618)
+    - Option precedence from lower to higher
+        1. Options read from `$FZF_DEFAULT_OPTS_FILE`
+        1. Options from `$FZF_DEFAULT_OPTS`
+        1. Options from command-line arguments
+- Bug fixes and improvements
+
+[find]: https://github.com/junegunn/fzf/blob/0.46.1/src/constants.go#L60-L64
+[walker]: https://github.com/junegunn/fzf/pull/1847
+[fastwalk]: https://github.com/charlievieth/fastwalk
+[unix]: https://en.wikipedia.org/wiki/Unix_philosophy
+
 0.46.1
 ------
 - Bug fixes and improvements

Dockerfile

@@ -1,6 +1,6 @@
-FROM --platform=linux/amd64 ubuntu:22.04
+FROM ubuntu:24.04
 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
 

Makefile

@@ -4,7 +4,7 @@ GOOS           ?= $(word 1, $(subst /, " ", $(word 4, $(shell go version))))
 
 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) $(MAKEFILE)
 
 ifdef FZF_VERSION
 VERSION        := $(FZF_VERSION)
@@ -25,7 +25,7 @@ endif
 ifeq ($(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
@@ -79,6 +79,7 @@ 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 \
 				github.com/junegunn/fzf/src \
 				github.com/junegunn/fzf/src/algo \
 				github.com/junegunn/fzf/src/tui \
@@ -173,12 +174,12 @@ bin/fzf: target/$(BINARY) | bin
 	cp -f target/$(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

README-VIM.md

@@ -238,19 +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'})

bin/fzf-tmux

@@ -7,7 +7,7 @@ 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'
 
 args=()
@@ -95,9 +95,9 @@ while [[ $# -gt 0 ]]; do
       elif [[ "$size" =~ %$ ]]; then
         size=${size:0:((${#size}-1))}
         if [[ -n "$swap" ]]; then
-          opt="$opt -p $(( 100 - size ))"
+          opt="$opt -l $(( 100 - size ))%"
         else
-          opt="$opt -p $size"
+          opt="$opt -l $size%"
         fi
       else
         if [[ -n "$swap" ]]; then
@@ -196,8 +196,9 @@ if [[ "$opt" =~ "-E" ]]; then
     exit 2
   fi
 fi
-[[ -n "$FZF_DEFAULT_OPTS"    ]] && envs="$envs FZF_DEFAULT_OPTS=$(printf %q "$FZF_DEFAULT_OPTS")"
+envs="$envs FZF_DEFAULT_COMMAND=$(printf %q "$FZF_DEFAULT_COMMAND")"
-[[ -n "$FZF_DEFAULT_COMMAND" ]] && envs="$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"

doc/fzf.txt

@@ -1,4 +1,4 @@
-fzf.txt	fzf	Last change: January 1 2024
+fzf.txt	fzf	Last change: February 15 2024
 FZF - TABLE OF CONTENTS                                            *fzf* *fzf-toc*
 ==============================================================================
 
@@ -264,17 +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'})
 <
@@ -417,24 +418,12 @@ 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')

go.mod

@@ -1,21 +1,20 @@
 module github.com/junegunn/fzf
 
 require (
-	github.com/gdamore/tcell/v2 v2.7.0
+	github.com/charlievieth/fastwalk v1.0.3
-	github.com/mattn/go-isatty v0.0.17
+	github.com/gdamore/tcell/v2 v2.7.4
+	github.com/mattn/go-isatty v0.0.20
 	github.com/mattn/go-shellwords v1.0.12
-	github.com/rivo/uniseg v0.4.6
+	github.com/rivo/uniseg v0.4.7
-	github.com/saracen/walker v0.1.3
+	golang.org/x/sys v0.19.0
-	golang.org/x/sys v0.16.0
+	golang.org/x/term v0.19.0
-	golang.org/x/term v0.16.0
 )
 
 require (
 	github.com/gdamore/encoding v1.0.0 // indirect
 	github.com/lucasb-eyer/go-colorful v1.2.0 // indirect
 	github.com/mattn/go-runewidth v0.0.15 // indirect
-	golang.org/x/sync v0.5.0 // indirect
 	golang.org/x/text v0.14.0 // indirect
 )
 
-go 1.17
+go 1.20

go.sum

@@ -1,21 +1,21 @@
+github.com/charlievieth/fastwalk v1.0.3 h1:eNWFaNPe5srPqQ5yyDbhAf11paeZaHWcihRhpuYFfSg=
+github.com/charlievieth/fastwalk v1.0.3/go.mod h1:JSfglY/gmL/rqsUS1NCsJTocB5n6sSl9ApAqif4CUbs=
 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/v2 v2.7.0 h1:I5LiGTQuwrysAt1KS9wg1yFfOI3arI3ucFrxtd/xqaA=
+github.com/gdamore/tcell/v2 v2.7.4 h1:sg6/UnTM9jGpZU+oFYAsDahfchWAFW8Xx2yFinNSAYU=
-github.com/gdamore/tcell/v2 v2.7.0/go.mod h1:hl/KtAANGBecfIPxk+FzKvThTqI84oplgbPEmVX60b8=
+github.com/gdamore/tcell/v2 v2.7.4/go.mod h1:dSXtXTSK0VsW1biw65DZLZ2NKr7j0qP/0J7ONmsraWg=
 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 v0.0.17 h1:BTarxUcIeDqL27Mc+vyvdWYSL28zpIhv3RoTdsLMPng=
+github.com/mattn/go-isatty v0.0.20 h1:xfD0iDuEKnDkl03q4limB+vH+GxLEtL/jb4xVJSWWEY=
-github.com/mattn/go-isatty v0.0.17/go.mod h1:kYGgaQfpe5nmfYZH+SKPsOc2e4SrIfOl2e/yFXSvRLM=
+github.com/mattn/go-isatty v0.0.20/go.mod h1:W+V8PltTTMOvKvAeJH7IuucS94S2C6jfK/D7dTCTo3Y=
 github.com/mattn/go-runewidth v0.0.15 h1:UNAjwbU9l54TA3KzvqLGxwWjHmMgBUVhBiTjelZgg3U=
 github.com/mattn/go-runewidth v0.0.15/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/go.mod h1:J6wj4VEh+S6ZtnVlnTBMWIodfgj8LQOQFoIToxlJtxc=
 github.com/rivo/uniseg v0.4.3/go.mod h1:FN3SvrM+Zdj16jyLfmOkMNblXMcoc8DfTHruCPUcx88=
-github.com/rivo/uniseg v0.4.6 h1:Sovz9sDSwbOz9tgUy8JpT+KgCkPYJEN/oYzlJiYTNLg=
+github.com/rivo/uniseg v0.4.7 h1:WUdvkW8uEhrYfLC4ZzdpI2ztxP1I582+49Oc5Mq64VQ=
-github.com/rivo/uniseg v0.4.6/go.mod h1:FN3SvrM+Zdj16jyLfmOkMNblXMcoc8DfTHruCPUcx88=
+github.com/rivo/uniseg v0.4.7/go.mod h1:FN3SvrM+Zdj16jyLfmOkMNblXMcoc8DfTHruCPUcx88=
-github.com/saracen/walker v0.1.3 h1:YtcKKmpRPy6XJTHJ75J2QYXXZYWnZNQxPCVqZSHVV/g=
-github.com/saracen/walker v0.1.3/go.mod h1:FU+7qU8DeQQgSZDmmThMJi93kPkLFgy0oVAcLxurjIk=
 github.com/yuin/goldmark v1.4.13/go.mod h1:6yULJ656Px+3vBD8DxQVa3kxgyrAnzto9xy5taEt/CY=
 golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
 golang.org/x/crypto v0.0.0-20210921155107-089bfa567519/go.mod h1:GvvjBRRGRdwPK5ydBHafDWAxML/pGHZbMvKqRZ5+Abc=
@@ -26,27 +26,24 @@ golang.org/x/net v0.0.0-20210226172049-e18ecbb05110/go.mod h1:m0MpNAwzfU5UDzcl9v
 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 v0.0.0-20220601150217-0de741cfad7f/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/sync v0.5.0 h1:60k92dhOjHxJkrqnwsfl8KuaHbn/5dl0lUPUklKo3qE=
-golang.org/x/sync v0.5.0/go.mod h1:Czt+wKu1gCyEFDUtn0jG5QVvpJ6rzVqr5aXyt9drQfk=
 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 v0.0.0-20220520151302-bc2c85ada10a/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20220722155257-8c9f86f7a55f/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
-golang.org/x/sys v0.0.0-20220811171246-fbc7d0a398ab/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.5.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
-golang.org/x/sys v0.15.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
+golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
-golang.org/x/sys v0.16.0 h1:xWw16ngr6ZMtmxDyKyIgsE93KNKz5HKmMa3b8ALHidU=
+golang.org/x/sys v0.17.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
-golang.org/x/sys v0.16.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
+golang.org/x/sys v0.19.0 h1:q5f1RH2jigJ1MoAWp2KTp3gm5zAGFUTarQZ5U386+4o=
+golang.org/x/sys v0.19.0/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 v0.15.0/go.mod h1:BDl952bC7+uMoWR75FIrCDx79TPU9oHkTZ9yRbYOrX0=
+golang.org/x/term v0.17.0/go.mod h1:lLRBjIVuehSbZlaOtGMbcMncT+aqLLLmKrsjNrUguwk=
-golang.org/x/term v0.16.0 h1:m+B6fahuftsE9qjo0VWp2FW0mB3MTJvR0BaMQrq0pmE=
+golang.org/x/term v0.19.0 h1:+ThwsDv+tYfnJFhF4L8jITxu1tdTWRTZpdsWgEgjL6Q=
-golang.org/x/term v0.16.0/go.mod h1:yn7UURbUtPyrVJPGPq404EukNFxcm/foM+bV/bfcDsY=
+golang.org/x/term v0.19.0/go.mod h1:2CuTdWZ7KHSQwUzKva0cbMg6q2DMI3Mmxp+gKJbskEk=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 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=

install

@@ -2,7 +2,7 @@
 
 set -u
 
-version=0.46.1
+version=0.51.0
 auto_completion=
 key_bindings=
 update_config=2
@@ -262,6 +262,12 @@ if [[ ! "\$PATH" == *$fzf_base_esc/bin* ]]; then
   PATH="\${PATH:+\${PATH}:}$fzf_base/bin"
 fi
 
+EOF
+
+  if [[ $auto_completion -eq 1 ]] && [[ $key_bindings -eq 1 ]]; then
+    echo "eval \"\$(fzf --$shell)\"" >> "$src"
+  else
+    cat >> "$src" << EOF
 # Auto-completion
 # ---------------
 $fzf_completion
@@ -270,6 +276,7 @@ $fzf_completion
 # ------------
 $fzf_key_bindings
 EOF
+  fi
   echo "OK"
 done
 
@@ -281,18 +288,6 @@ 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() {
@@ -355,12 +350,23 @@ 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 @@
-$version="0.46.1"
+$version="0.51.0"
 
 $fzf_base=Split-Path -Parent $MyInvocation.MyCommand.Definition
 

main.go

@@ -1,14 +1,55 @@
 package main
 
 import (
+	_ "embed"
+	"fmt"
+	"strings"
+
 	fzf "github.com/junegunn/fzf/src"
 	"github.com/junegunn/fzf/src/protector"
 )
 
-var version string = "0.46"
+var version string = "0.51"
 var revision string = "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
+
+func printScript(label string, content []byte) {
+	fmt.Println("### " + label + " ###")
+	fmt.Println(strings.TrimSpace(string(content)))
+	fmt.Println("### end: " + label + " ###")
+}
+
 func main() {
 	protector.Protect()
-	fzf.Run(fzf.ParseOptions(), version, revision)
+	options := fzf.ParseOptions()
+	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
+	}
+	fzf.Run(options, version, revision)
 }

main_test.go

@@ -0,0 +1,174 @@
+package main
+
+import (
+	"bytes"
+	"fmt"
+	"go/ast"
+	"go/build"
+	"go/importer"
+	"go/parser"
+	"go/token"
+	"go/types"
+	"io/fs"
+	"os"
+	"os/exec"
+	"path/filepath"
+	"sort"
+	"strings"
+	"testing"
+)
+
+func loadPackages(t *testing.T) []*build.Package {
+	// If GOROOT is not set, use `go env GOROOT` to determine it since it
+	// performs more work than just runtime.GOROOT(). For context, running
+	// the tests with the "-trimpath" flag causes GOROOT to not be set.
+	ctxt := &build.Default
+	if ctxt.GOROOT == "" {
+		cmd := exec.Command("go", "env", "GOROOT")
+		out, err := cmd.CombinedOutput()
+		out = bytes.TrimSpace(out)
+		if err != nil {
+			t.Fatalf("error running command: %q: %v\n%s", cmd.Args, err, out)
+		}
+		ctxt.GOROOT = string(out)
+	}
+
+	wd, err := os.Getwd()
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	var pkgs []*build.Package
+	seen := make(map[string]bool)
+	err = filepath.WalkDir(wd, func(path string, d fs.DirEntry, err error) error {
+		if err != nil {
+			return err
+		}
+		name := d.Name()
+		if d.IsDir() {
+			if name == "" || name[0] == '.' || name[0] == '_' || name == "vendor" || name == "tmp" {
+				return filepath.SkipDir
+			}
+			return nil
+		}
+		if d.Type().IsRegular() && filepath.Ext(name) == ".go" && !strings.HasSuffix(name, "_test.go") {
+			dir := filepath.Dir(path)
+			if !seen[dir] {
+				pkg, err := ctxt.ImportDir(dir, build.ImportComment)
+				if err != nil {
+					return fmt.Errorf("%s: %s", dir, err)
+				}
+				if pkg.ImportPath == "" || pkg.ImportPath == "." {
+					importPath, err := filepath.Rel(wd, dir)
+					if err != nil {
+						t.Fatal(err)
+					}
+					pkg.ImportPath = filepath.ToSlash(filepath.Join("github.com/junegunn/fzf", importPath))
+				}
+
+				pkgs = append(pkgs, pkg)
+				seen[dir] = true
+			}
+		}
+		return nil
+	})
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	sort.Slice(pkgs, func(i, j int) bool {
+		return pkgs[i].ImportPath < pkgs[j].ImportPath
+	})
+	return pkgs
+}
+
+var sourceImporter = importer.ForCompiler(token.NewFileSet(), "source", nil)
+
+func checkPackageForOsExit(t *testing.T, bpkg *build.Package, allowed map[string]int) (errOsExit bool) {
+	var files []*ast.File
+	fset := token.NewFileSet()
+	for _, name := range bpkg.GoFiles {
+		filename := filepath.Join(bpkg.Dir, name)
+		af, err := parser.ParseFile(fset, filename, nil, parser.ParseComments)
+		if err != nil {
+			t.Fatal(err)
+		}
+		files = append(files, af)
+	}
+
+	info := types.Info{
+		Uses: make(map[*ast.Ident]types.Object),
+	}
+	conf := types.Config{
+		Importer: sourceImporter,
+	}
+	_, err := conf.Check(bpkg.Name, fset, files, &info)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	wd, err := os.Getwd()
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	for id, obj := range info.Uses {
+		if obj.Pkg() != nil && obj.Pkg().Name() == "os" && obj.Name() == "Exit" {
+			pos := fset.Position(id.Pos())
+
+			name, err := filepath.Rel(wd, pos.Filename)
+			if err != nil {
+				t.Log(err)
+				name = pos.Filename
+			}
+			name = filepath.ToSlash(name)
+
+			// Check if the usage is allowed
+			if allowed[name] > 0 {
+				allowed[name]--
+				continue
+			}
+
+			t.Errorf("os.Exit referenced at: %s:%d:%d", name, pos.Line, pos.Column)
+			errOsExit = true
+		}
+	}
+	return errOsExit
+}
+
+// Enforce that src/util.Exit() is used instead of os.Exit by prohibiting
+// references to it anywhere else in the fzf code base.
+func TestOSExitNotAllowed(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping: short test")
+	}
+	allowed := map[string]int{
+		"src/util/atexit.go": 1, // os.Exit allowed 1 time in "atexit.go"
+	}
+	var errOsExit bool
+	for _, pkg := range loadPackages(t) {
+		t.Run(pkg.ImportPath, func(t *testing.T) {
+			if checkPackageForOsExit(t, pkg, allowed) {
+				errOsExit = true
+			}
+		})
+	}
+	if t.Failed() && errOsExit {
+		var names []string
+		for name := range allowed {
+			names = append(names, fmt.Sprintf("%q", name))
+		}
+		sort.Strings(names)
+
+		const errMsg = `
+Test failed because os.Exit was referenced outside of the following files:
+
+    %s
+
+Use github.com/junegunn/fzf/src/util.Exit() instead to exit the program.
+This is enforced because calling os.Exit() prevents the functions
+registered with util.AtExit() from running.`
+
+		t.Errorf(errMsg, strings.Join(names, "\n    "))
+	}
+}

man/man1/fzf-tmux.1

@@ -21,7 +21,7 @@ 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 "Feb 2024" "fzf 0.46.1" "fzf-tmux - open fzf in tmux split pane"
+.TH fzf-tmux 1 "May 2024" "fzf 0.51.0" "fzf-tmux - open fzf in tmux split pane"
 
 .SH NAME
 fzf-tmux - open fzf in tmux split pane

man/man1/fzf.1

@@ -21,7 +21,7 @@ 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 1 "Feb 2024" "fzf 0.46.1" "fzf - a command-line fuzzy finder"
+.TH fzf 1 "May 2024" "fzf 0.51.0" "fzf - a command-line fuzzy finder"
 
 .SH NAME
 fzf - a command-line fuzzy finder
@@ -33,6 +33,10 @@ fzf [options]
 fzf is a general-purpose command-line fuzzy finder.
 
 .SH OPTIONS
+.SS Note
+.TP
+Most long options have the opposite version with \fB--no-\fR prefix.
+
 .SS Search mode
 .TP
 .B "-x, --extended"
@@ -187,7 +191,7 @@ actions are affected:
 \fBkill-word\fR
 .TP
 .BI "--jump-labels=" "CHARS"
-Label characters for \fBjump\fR and \fBjump-accept\fR
+Label characters for \fBjump\fR mode.
 .SS Layout
 .TP
 .BI "--height=" "[~]HEIGHT[%]"
@@ -368,21 +372,22 @@ e.g.
 
 .TP
 .BI "--info=" "STYLE"
-Determines the display style of finder info (match counters).
+Determines the display style of the finder info. (e.g. match counter, loading indicator, etc.)
 
+.BR default "              On the left end of the horizontal separator"
 .br
-.BR default "          Display on the next line to the prompt"
+.BR right "                On the right end of the horizontal separator"
-.br
-.BR right "            Display on the right end of the next line to the prompt"
-.br
-.BR inline "           Display on the same line with the default separator ' < '"
-.br
-.BR inline:SEPARATOR " Display on the same line with a non-default separator"
-.br
-.BR inline-right "     Display on the right end of the same line
 .br
 .BR hidden "               Do not display finder info"
 .br
+.BR inline "               After the prompt with the default prefix ' < '"
+.br
+.BR inline:PREFIX "        After the prompt with a non-default prefix"
+.br
+.BR inline-right "         On the right end of the prompt line"
+.br
+.BR inline-right:PREFIX "  On the right end of the prompt line with a custom prefix"
+.br
 
 .TP
 .B "--no-info"
@@ -620,7 +625,7 @@ The following example uses https://github.com/junegunn/fzf/blob/master/bin/fzf-p
 script to render an image using either of the protocols inside the preview window.
 
 e.g.
-      \fBfzf --preview='fzf-preview.sh {}'
+      \fBfzf --preview='fzf-preview.sh {}'\fR
 
 .RE
 
@@ -807,12 +812,22 @@ e.g.
 .TP
 .B "--sync"
 Synchronous search for multi-staged filtering. If specified, fzf will launch
-ncurses finder only after the input stream is complete.
+the finder only after the input stream is complete.
 
 .RS
 e.g. \fBfzf --multi | fzf --sync\fR
 .RE
 .TP
+.B "--with-shell=STR"
+Shell command and flags to start child processes with. On *nix Systems, the
+default value is \fB$SHELL -c\fR if \fB$SHELL\fR is set, otherwise \fBsh -c\fR.
+On Windows, the default value is \fBcmd /v:on/s/c\fR when \fB$SHELL\fR is not
+set.
+
+.RS
+e.g. \fBgem list | fzf --with-shell 'ruby -e' --preview 'pp Gem::Specification.find_by_name({1})'\fR
+.RE
+.TP
 .B "--listen[=[ADDR:]PORT]" "--listen-unsafe[=[ADDR:]PORT]"
 Start HTTP server and listen on the given address. It allows external processes
 to send actions to perform via POST method.
@@ -854,8 +869,49 @@ e.g.
 .B "--version"
 Display version information and exit
 
+.SS Directory traversal
 .TP
-Note that most options have the opposite versions with \fB--no-\fR prefix.
+.B "--walker=[file][,dir][,follow][,hidden]"
+Determines the behavior of the built-in directory walker that is used when
+\fB$FZF_DEFAULT_COMMAND\fR is not set. The default value is \fBfile,follow,hidden\fR.
+
+* \fBfile\fR: Include files in the search result
+.br
+* \fBdir\fR: Include directories in the search result
+.br
+* \fBhidden\fR: Include and follow hidden directories
+.br
+* \fBfollow\fR: Follow symbolic links
+.br
+
+.TP
+.B "--walker-root=DIR"
+The root directory from which to start the built-in directory walker.
+The default value is the current working directory.
+
+.TP
+.B "--walker-skip=DIRS"
+Comma-separated list of directory names to skip during the directory walk.
+The default value is \fB.git,node_modules\fR.
+
+.SS Shell integration
+.TP
+.B "--bash"
+Print script to set up Bash shell integration
+
+e.g. \fBeval "$(fzf --bash)"\fR
+
+.TP
+.B "--zsh"
+Print script to set up Zsh shell integration
+
+e.g. \fBeval "$(fzf --zsh)"\fR
+
+.TP
+.B "--fish"
+Print script to set up Fish shell integration
+
+e.g. \fBfzf --fish | source\fR
 
 .SH ENVIRONMENT VARIABLES
 .TP
@@ -865,7 +921,14 @@ with \fB$SHELL -c\fR if \fBSHELL\fR is set, otherwise with \fBsh -c\fR, so in
 this case make sure that the command is POSIX-compliant.
 .TP
 .B FZF_DEFAULT_OPTS
-Default options. e.g. \fBexport FZF_DEFAULT_OPTS="--extended --cycle"\fR
+Default options.
+.br
+e.g. \fBexport FZF_DEFAULT_OPTS="--layout=reverse --border --cycle"\fR
+.TP
+.B FZF_DEFAULT_OPTS_FILE
+The location of the file that contains the default options.
+.br
+e.g. \fBexport FZF_DEFAULT_OPTS_FILE=~/.fzfrc\fR
 .TP
 .B FZF_API_KEY
 Can be used to require an API key when using \fB--listen\fR option. If not set,
@@ -879,6 +942,8 @@ you need to protect against DNS rebinding and privilege escalation attacks.
 .br
 .BR 2 "      Error"
 .br
+.BR 127 "    Invalid shell command for \fBbecome\fR action"
+.br
 .BR 130 "    Interrupted with \fBCTRL-C\fR or \fBESC\fR"
 
 .SH FIELD INDEX EXPRESSION
@@ -919,12 +984,20 @@ fzf exports the following environment variables to its child processes.
 .br
 .BR FZF_SELECT_COUNT "    Number of selected items"
 .br
+.BR FZF_POS "             Vertical position of the cursor in the list starting from 1"
+.br
 .BR FZF_QUERY "           Current query string"
 .br
 .BR FZF_PROMPT "          Prompt string"
 .br
+.BR FZF_PREVIEW_LABEL "   Preview label string"
+.br
+.BR FZF_BORDER_LABEL "    Border label string"
+.br
 .BR FZF_ACTION "          The name of the last action performed"
 .br
+.BR FZF_KEY "             The name of the last key pressed"
+.br
 .BR FZF_PORT "            Port number when --listen option is used"
 .br
 
@@ -1009,7 +1082,7 @@ e.g.
 .br
 \fIspace\fR
 .br
-\fIbspace\fR      (\fIbs\fR)
+\fIbackspace\fR      (\fIbspace\fR \fIbs\fR)
 .br
 \fIalt-up\fR
 .br
@@ -1023,15 +1096,15 @@ e.g.
 .br
 \fIalt-space\fR
 .br
-\fIalt-bspace\fR  (\fIalt-bs\fR)
+\fIalt-backspace\fR  (\fIalt-bspace\fR \fIalt-bs\fR)
 .br
 \fItab\fR
 .br
-\fIbtab\fR        (\fIshift-tab\fR)
+\fIshift-tab\fR      (\fIbtab\fR)
 .br
 \fIesc\fR
 .br
-\fIdel\fR
+\fIdelete\fR         (\fIdel\fR)
 .br
 \fIup\fR
 .br
@@ -1047,9 +1120,9 @@ e.g.
 .br
 \fIinsert\fR
 .br
-\fIpgup\fR        (\fIpage-up\fR)
+\fIpage-up\fR        (\fIpgup\fR)
 .br
-\fIpgdn\fR        (\fIpage-down\fR)
+\fIpage-down\fR      (\fIpgdn\fR)
 .br
 \fIshift-up\fR
 .br
@@ -1103,6 +1176,7 @@ e.g.
      \fB# Move cursor to the last item and select all items
      seq 1000 | fzf --multi --sync --bind start:last+select-all\fR
 .RE
+
 \fIload\fR
 .RS
 Triggered when the input stream is complete and the initial processing of the
@@ -1112,6 +1186,7 @@ e.g.
      \fB# Change the prompt to "loaded" when the input stream is complete
      (seq 10; sleep 1; seq 11 20) | fzf --prompt 'Loading> ' --bind 'load:change-prompt:Loaded> '\fR
 .RE
+
 \fIresize\fR
 .RS
 Triggered when the terminal size is changed.
@@ -1119,6 +1194,7 @@ Triggered when the terminal size is changed.
 e.g.
      \fBfzf --bind 'resize:transform-header:echo Resized: ${FZF_COLUMNS}x${FZF_LINES}'\fR
 .RE
+
 \fIresult\fR
 .RS
 Triggered when the filtering for the current query is complete and the result list is ready.
@@ -1152,6 +1228,7 @@ e.g.
      # Beware not to introduce an infinite loop
      seq 10 | fzf --bind 'focus:up' --cycle\fR
 .RE
+
 \fIone\fR
 .RS
 Triggered when there's only one match. \fBone:accept\fR binding is comparable
@@ -1163,6 +1240,7 @@ e.g.
      \fB# Automatically select the only match
      seq 10 | fzf --bind one:accept\fR
 .RE
+
 \fIzero\fR
 .RS
 Triggered when there's no match. \fBzero:abort\fR binding is comparable to
@@ -1184,6 +1262,22 @@ e.g.
      \fBfzf --bind backward-eof:abort\fR
 .RE
 
+\fIjump\fR
+.RS
+Triggered when successfully jumped to the target item in \fBjump\fR mode.
+
+e.g.
+     \fBfzf --bind space:jump,jump:accept\fR
+.RE
+
+\fIjump-cancel\fR
+.RS
+Triggered when \fBjump\fR mode is cancelled.
+
+e.g.
+     \fBfzf --bind space:jump,jump:accept,jump-cancel:abort\fR
+.RE
+
 .SS AVAILABLE ACTIONS:
 A key or an event can be bound to one or more of the following actions.
 
@@ -1202,6 +1296,8 @@ A key or an event can be bound to one or more of the following actions.
     \fBcancel\fR                       (clear query string if not empty, abort fzf otherwise)
     \fBchange-border-label(...)\fR     (change \fB--border-label\fR to the given string)
     \fBchange-header(...)\fR           (change header to the given string; doesn't affect \fB--header-lines\fR)
+    \fBchange-multi\fR                 (enable multi-select mode with no limit)
+    \fBchange-multi(...)\fR            (enable multi-select mode with a limit or disable it with 0)
     \fBchange-preview(...)\fR          (change \fB--preview\fR option)
     \fBchange-preview-label(...)\fR    (change \fB--preview-label\fR to the given string)
     \fBchange-preview-window(...)\fR   (change \fB--preview-window\fR option; rotate through the multiple option sets separated by '|')
@@ -1226,7 +1322,6 @@ A key or an event can be bound to one or more of the following actions.
     \fBforward-word\fR                 \fIalt-f   shift-right\fR
     \fBignore\fR
     \fBjump\fR                         (EasyMotion-like 2-keystroke movement)
-    \fBjump-accept\fR                  (jump and accept)
     \fBkill-line\fR
     \fBkill-word\fR                    \fIalt-d\fR
     \fBlast\fR                         (move to the last match; same as \fBpos(-1)\fR)
@@ -1274,9 +1369,10 @@ A key or an event can be bound to one or more of the following actions.
     \fBtoggle-preview-wrap\fR
     \fBtoggle-search\fR                (toggle search functionality)
     \fBtoggle-sort\fR
-    \fBtoggle-track\fR
+    \fBtoggle-track\fR                 (toggle global tracking option (\fB--track\fR))
+    \fBtoggle-track-current\fR         (toggle tracking of the current item)
     \fBtoggle+up\fR                    \fIbtab    (shift-tab)\fR
-    \fBtrack\fR                        (track the current item; automatically disabled if focus changes)
+    \fBtrack-current\fR                (track the current item; automatically disabled if focus changes)
     \fBtransform(...)\fR               (transform states using the output of an external command)
     \fBtransform-border-label(...)\fR  (transform border label using an external command)
     \fBtransform-header(...)\fR        (transform header using an external command)
@@ -1286,6 +1382,7 @@ A key or an event can be bound to one or more of the following actions.
     \fBunbind(...)\fR                  (unbind bindings)
     \fBunix-line-discard\fR            \fIctrl-u\fR
     \fBunix-word-rubout\fR             \fIctrl-w\fR
+    \fBuntrack-current\fR              (stop tracking the current item; no-op if global tracking is enabled)
     \fBup\fR                           \fIctrl-k  ctrl-p  up\fR
     \fByank\fR                         \fIctrl-y\fR
 
@@ -1358,8 +1455,6 @@ call.
 
     \fBfzf --bind "enter:become(vim {})"\fR
 
-\fBbecome(...)\fR is not supported on Windows.
-
 .SS RELOAD INPUT
 
 \fBreload(...)\fR action is used to dynamically update the input list

plugin/fzf.vim

@@ -83,12 +83,28 @@ else
   endfunction
 endif
 
+let s:cmd_control_chars = ['&', '|', '<', '>', '(', ')', '@', '^', '!']
+
 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
+    elseif c ==# '%'
+      let e .= '%'
+    elseif index(s:cmd_control_chars, c) >= 0
+      let e .= '^'
+    else
+      let slashes = 0
+    endif
+    let e .= c
+  endfor
+  let e .= repeat('\', slashes) .'"'
+  return e
 endfunction
 
 function! fzf#shellescape(arg, ...)

shell/completion.bash

@@ -9,32 +9,37 @@
 # - $FZF_COMPLETION_TRIGGER (default: '**')
 # - $FZF_COMPLETION_OPTS    (default: empty)
 
-[[ $- =~ i ]] || return 0
+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() {
+#   _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 | command sed 's@^\./@@'
+#       -a -not -path "$1" -print 2> /dev/null | command 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 | command sed 's@^\./@@'
-      -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@^\./@@'
-  }
-fi
 
 ###########################################################
 
 # 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 "$@"
@@ -63,6 +68,31 @@ __fzf_orig_completion() {
   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" "$func"
+}
+
 _fzf_opts_completion() {
   local cur prev opts
   COMPREPLY=()
@@ -70,128 +100,77 @@ _fzf_opts_completion() {
   prev="${COMP_WORDS[COMP_CWORD-1]}"
   opts="
     -h --help
-    -x --extended
     -e --exact
-    --extended-exact
     +x --no-extended
-    +e --no-exact
     -q --query
     -f --filter
     --literal
-    --no-literal
-    --algo
     --scheme
     --expect
-    --no-expect
+    --disabled
-    --enabled --no-phony
-    --disabled --phony
     --tiebreak
     --bind
     --color
-    --toggle-sort
     -d --delimiter
     -n --nth
     --with-nth
-    -s --sort
     +s --no-sort
     --track
-    --no-track
     --tac
-    --no-tac
     -i
     +i
     -m --multi
-    +m --no-multi
     --ansi
-    --no-ansi
     --no-mouse
     +c --no-color
-    +2 --no-256
-    --black
-    --no-black
-    --bold
     --no-bold
     --layout
     --reverse
-    --no-reverse
     --cycle
-    --no-cycle
     --keep-right
-    --no-keep-right
-    --hscroll
     --no-hscroll
     --hscroll-off
     --scroll-off
     --filepath-word
-    --no-filepath-word
     --info
-    --no-info
-    --inline-info
-    --no-inline-info
     --separator
     --no-separator
-    --scrollbar
     --no-scrollbar
     --jump-labels
     -1 --select-1
-    +1 --no-select-1
     -0 --exit-0
-    +0 --no-exit-0
     --read0
-    --no-read0
     --print0
-    --no-print0
     --print-query
-    --no-print-query
     --prompt
     --pointer
     --marker
     --sync
-    --no-sync
-    --async
-    --no-history
     --history
     --history-size
-    --no-header
-    --no-header-lines
     --header
     --header-lines
     --header-first
-    --no-header-first
     --ellipsis
     --preview
-    --no-preview
     --preview-window
     --height
     --min-height
-    --no-height
-    --no-margin
-    --no-padding
-    --no-border
     --border
-    --no-border-label
     --border-label
     --border-label-pos
-    --no-preview-label
     --preview-label
     --preview-label-pos
     --no-unicode
-    --unicode
     --margin
     --padding
     --tabstop
     --listen
-    --no-listen
-    --clear
     --no-clear
     --version
     --"
 
   case "${prev}" in
-  --algo)
-    COMPREPLY=( $(compgen -W "v1 v2" -- "$cur") )
-    return 0
-    ;;
   --scheme)
     COMPREPLY=( $(compgen -W "default path history" -- "$cur") )
     return 0
@@ -261,28 +240,32 @@ _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-}"
+    "$REPLY" "$@"
-  orig="${orig##*#}"
-  if [[ -n "$orig" ]] && type "$orig" > /dev/null 2>&1; 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)
+
+      # 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
 }
@@ -293,7 +276,6 @@ __fzf_generic_path_completion() {
   if [[ $cmd == \\* ]]; then
     cmd="${cmd:1}"
   fi
-  cmd="${cmd//[^A-Za-z0-9_=]/_}"
   COMPREPLY=()
   trigger=${FZF_COMPLETION_TRIGGER-'**'}
   cur="${COMP_WORDS[COMP_CWORD]}"
@@ -309,9 +291,18 @@ __fzf_generic_path_completion() {
         leftover=${leftover/#\/}
         [[ -z "$dir" ]] && dir='.'
         [[ "$dir" != "/" ]] && dir="${dir/%\//}"
-        matches=$(eval "$1 $(printf %q "$dir")" | FZF_DEFAULT_OPTS="--height ${FZF_TMUX_HEIGHT:-40%} --reverse --scheme=path --bind=ctrl-z:ignore ${FZF_DEFAULT_OPTS-} ${FZF_COMPLETION_OPTS-} $2" __fzf_comprun "$4" -q "$leftover" | while read -r item; do
+        matches=$(
+          export FZF_DEFAULT_OPTS=$(__fzf_defaults "--reverse --scheme=path" "${FZF_COMPLETION_OPTS-} $2")
+          unset FZF_DEFAULT_COMMAND FZF_DEFAULT_OPTS_FILE
+          if declare -F "$1" > /dev/null; then
+            eval "$1 $(printf %q "$dir")" | __fzf_comprun "$4" -q "$leftover"
+          else
+            [[ $1 =~ dir ]] && walker=dir,follow || walker=file,dir,follow,hidden
+            __fzf_comprun "$4" -q "$leftover" --walker "$walker" --walker-root="$dir"
+          fi | while read -r item; do
             printf "%q " "${item%$3}$3"
-        done)
+          done
+        )
         matches=${matches% }
         [[ -z "$3" ]] && [[ "${__fzf_nospace_commands-}" = *" ${COMP_WORDS[0]} "* ]] && matches="$matches "
         if [[ -n "$matches" ]]; then
@@ -359,13 +350,16 @@ _fzf_complete() {
   post="$(caller 0 | command awk '{print $2}')_post"
   type -t "$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" ]] && [[ $cur != *'$('* ]] && [[ $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" | $post | command tr '\n' ' ')
+    selected=$(
+      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")
@@ -469,8 +463,11 @@ 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="${FZF_COMPLETION_DIR_COMMANDS:-cd pushd rmdir}"
+d_cmds="${FZF_COMPLETION_DIR_COMMANDS-cd pushd rmdir}"
-a_cmds="
+
+# NOTE: $FZF_COMPLETION_PATH_COMMANDS and $FZF_COMPLETION_VAR_COMMANDS are
+# undocumented and subject to change in the future.
+a_cmds="${FZF_COMPLETION_PATH_COMMANDS-"
   awk bat cat diff diff3
   emacs emacsclient ex file ftp g++ gcc gvim head hg hx java
   javac ld less more mvim nvim patch perl python ruby
@@ -478,25 +475,31 @@ a_cmds="
   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 ssh 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
@@ -509,13 +512,24 @@ 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
 
+# 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
+unset cmd d_cmds a_cmds v_cmds
 
 _fzf_setup_completion() {
   local kind fn cmd
@@ -537,8 +551,4 @@ _fzf_setup_completion() {
   done
 }
 
-# Environment variables / Aliases / Hosts / Process
+fi
-_fzf_setup_completion 'var'   export unset printenv
-_fzf_setup_completion 'alias' unalias
-_fzf_setup_completion 'host'  telnet
-_fzf_setup_completion 'proc'  kill

shell/completion.zsh

@@ -9,8 +9,6 @@
 # - $FZF_COMPLETION_TRIGGER (default: '**')
 # - $FZF_COMPLETION_OPTS    (default: empty)
 
-[[ -o interactive ]] || return 0
-
 
 # Both branches of the following `if` do the same thing -- define
 # __fzf_completion_options such that `eval $__fzf_completion_options` sets
@@ -75,27 +73,35 @@ fi
 # 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;
+# placing it there fails to disable alias expansion. See #3731.
+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 "$@"
@@ -148,10 +154,19 @@ __fzf_generic_path_completion() {
       leftover=${leftover/#\/}
       [ -z "$dir" ] && dir='.'
       [ "$dir" != "/" ] && dir="${dir/%\//}"
-      matches=$(eval "$compgen $(printf %q "$dir")" | FZF_DEFAULT_OPTS="--height ${FZF_TMUX_HEIGHT:-40%} --reverse --scheme=path --bind=ctrl-z:ignore ${FZF_DEFAULT_OPTS-} ${FZF_COMPLETION_OPTS-}" __fzf_comprun "$cmd" ${(Q)${(Z+n+)fzf_opts}} -q "$leftover" | while read item; do
+      matches=$(
+        export 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
+          [[ $compgen =~ dir ]] && walker=dir,follow || walker=file,dir,follow,hidden
+          __fzf_comprun "$cmd" ${(Q)${(Z+n+)fzf_opts}} -q "$leftover" --walker "$walker" --walker-root="$dir" < /dev/tty
+        fi | while read item; do
           item="${item%$suffix}$suffix"
           echo -n "${(q)item} "
-      done)
+        done
+      )
       matches=${matches% }
       if [ -n "$matches" ]; then
         LBUFFER="$lbuf$matches$tail"
@@ -211,7 +226,10 @@ _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
@@ -309,7 +327,7 @@ 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
@@ -339,6 +357,7 @@ fzf-completion() {
 
 zle     -N   fzf-completion
 bindkey '^I' fzf-completion
+fi
 
 } always {
   # Restore the original options.

shell/key-bindings.bash

@@ -11,20 +11,24 @@
 # - $FZF_ALT_C_COMMAND
 # - $FZF_ALT_C_OPTS
 
-[[ $- =~ i ]] || return 0
+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 | command cut -b3-"}"
-  opts="--height ${FZF_TMUX_HEIGHT:-40%} --bind=ctrl-z:ignore --reverse --scheme=path ${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
@@ -42,23 +46,24 @@ 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 | command cut -b3-"}"
+    FZF_DEFAULT_COMMAND=${FZF_ALT_C_COMMAND:-} \
-  opts="--height ${FZF_TMUX_HEIGHT:-40%} --bind=ctrl-z:ignore --reverse --scheme=path ${FZF_DEFAULT_OPTS-} ${FZF_ALT_C_OPTS-} +m"
+    FZF_DEFAULT_OPTS=$(__fzf_defaults "--reverse --walker=dir,follow,hidden --scheme=path" "${FZF_ALT_C_OPTS-} +m") \
-  dir=$(set +o pipefail; 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)"
 }
 
 if command -v perl > /dev/null; then
   __fzf_history__() {
-    local output opts script
+    local output script
-    opts="--height ${FZF_TMUX_HEIGHT:-40%} --bind=ctrl-z:ignore ${FZF_DEFAULT_OPTS-} -n2..,.. --scheme=history --bind=ctrl-r:toggle-sort ${FZF_CTRL_R_OPTS-} +m --read0"
     script='BEGIN { getc; $/ = "\n\t"; $HISTCOUNT = $ENV{last_hist} + 1 } s/^[ *]//; print $HISTCOUNT - $. . "\t$_" if !$seen{$_}++'
     output=$(
       set +o pipefail
       builtin fc -lnr -2147483648 |
         last_hist=$(HISTTIMEFORMAT='' builtin history 1) command perl -n -l0 -e "$script" |
-        FZF_DEFAULT_OPTS="$opts" $(__fzfcmd) --query "$READLINE_LINE"
+        FZF_DEFAULT_OPTS=$(__fzf_defaults "" "-n2..,.. --scheme=history --bind=ctrl-r:toggle-sort ${FZF_CTRL_R_OPTS-} +m --read0") \
+        FZF_DEFAULT_OPTS_FILE='' $(__fzfcmd) --query "$READLINE_LINE"
     ) || return
     READLINE_LINE=${output#*$'\t'}
     if [[ -z "$READLINE_POINT" ]]; then
@@ -69,14 +74,13 @@ if command -v perl > /dev/null; then
   }
 else # awk - fallback for POSIX systems
   __fzf_history__() {
-    local output opts script n x y z d
+    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
-    opts="--height ${FZF_TMUX_HEIGHT:-40%} --bind=ctrl-z:ignore ${FZF_DEFAULT_OPTS-} -n2..,.. --scheme=history --bind=ctrl-r:toggle-sort ${FZF_CTRL_R_OPTS-} +m --read0"
     [[ $(HISTTIMEFORMAT='' builtin history 1) =~ [[:digit:]]+ ]]    # how many history entries
     script='function P(b) { ++n; sub(/^[ *]/, "", b); if (!seen[b]++) { printf "%d\t%s%c", '$((BASH_REMATCH + 1))' - n, b, 0 } }
     NR==1 { b = substr($0, 2); next }
@@ -87,7 +91,8 @@ else # awk - fallback for POSIX systems
       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="$opts" $(__fzfcmd) --query "$READLINE_LINE"
+        FZF_DEFAULT_OPTS=$(__fzf_defaults "" "-n2..,.. --scheme=history --bind=ctrl-r:toggle-sort ${FZF_CTRL_R_OPTS-} +m --read0") \
+        FZF_DEFAULT_OPTS_FILE='' $(__fzfcmd) --query "$READLINE_LINE"
     ) || return
     READLINE_LINE=${output#*$'\t'}
     if [[ -z "$READLINE_POINT" ]]; then
@@ -107,9 +112,11 @@ 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
+  if [[ "${FZF_CTRL_T_COMMAND-x}" != "" ]]; then
     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-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"'
@@ -117,9 +124,11 @@ if (( BASH_VERSINFO[0] < 4 )); then
   bind -m vi-insert '"\C-r": "\C-z\C-r\C-z"'
 else
   # CTRL-T - Paste the selected file path into the command line
+  if [[ "${FZF_CTRL_T_COMMAND-x}" != "" ]]; then
     bind -m emacs-standard -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__'
@@ -128,6 +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

@@ -18,25 +18,28 @@ status is-interactive; or exit 0
 # ------------
 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 --scheme=path --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
@@ -56,7 +59,8 @@ 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 --scheme=history --bind=ctrl-r:toggle-sort,ctrl-z:ignore $FZF_CTRL_R_OPTS +m"
+      set -lx FZF_DEFAULT_OPTS (__fzf_defaults "" "--scheme=history --bind=ctrl-r:toggle-sort $FZF_CTRL_R_OPTS +m")
+      set -lx FZF_DEFAULT_OPTS_FILE ''
 
       set -l FISH_MAJOR (echo $version | cut -f1 -d.)
       set -l FISH_MINOR (echo $version | cut -f2 -d.)
@@ -77,17 +81,16 @@ 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 --scheme=path --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" ]
         cd -- $result
@@ -113,15 +116,23 @@ function fzf_key_bindings
     end
   end
 
-  bind \ct fzf-file-widget
   bind \cr fzf-history-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
+    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'
     set -l commandline (commandline -t)

shell/key-bindings.zsh

@@ -11,8 +11,6 @@
 # - $FZF_ALT_C_COMMAND
 # - $FZF_ALT_C_OPTS
 
-[[ -o interactive ]] || return 0
-
 
 # Key bindings
 # ------------
@@ -38,16 +36,23 @@ fi
 'builtin' 'emulate' 'zsh' && 'builtin' 'setopt' 'no_aliases'
 
 {
+if [[ -o interactive ]]; then
+
+__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 --scheme=path --bind=ctrl-z:ignore ${FZF_DEFAULT_OPTS-} ${FZF_CTRL_T_OPTS-}" $(__fzfcmd) -m "$@" | while read item; do
+  FZF_DEFAULT_COMMAND=${FZF_CTRL_T_COMMAND:-} \
+  FZF_DEFAULT_OPTS=$(__fzf_defaults "--reverse --walker=file,dir,follow,hidden --scheme=path" "${FZF_CTRL_T_OPTS-} -m") \
+  FZF_DEFAULT_OPTS_FILE='' $(__fzfcmd) "$@" < /dev/tty | while read item; do
     echo -n "${(q)item} "
   done
   local ret=$?
@@ -61,45 +66,51 @@ __fzfcmd() {
 }
 
 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 --scheme=path --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
   setopt localoptions noglobsubst noposixbuiltins pipefail no_aliases 2> /dev/null
   selected="$(fc -rl 1 | awk '{ cmd=$0; sub(/^[ \t]*[0-9]+\**[ \t]+/, "", cmd); if (!seen[cmd]++) print $0 }' |
-    FZF_DEFAULT_OPTS="--height ${FZF_TMUX_HEIGHT:-40%} ${FZF_DEFAULT_OPTS-} -n2..,.. --scheme=history --bind=ctrl-r:toggle-sort,ctrl-z:ignore ${FZF_CTRL_R_OPTS-} --query=${(qqq)LBUFFER} +m" $(__fzfcmd))"
+    FZF_DEFAULT_OPTS=$(__fzf_defaults "" "-n2..,.. --scheme=history --bind=ctrl-r:toggle-sort ${FZF_CTRL_R_OPTS-} --query=${(qqq)LBUFFER} +m") \
+    FZF_DEFAULT_OPTS_FILE='' $(__fzfcmd))"
   local ret=$?
   if [ -n "$selected" ]; then
     num=$(awk '{print $1}' <<< "$selected")
@@ -116,6 +127,7 @@ 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/actiontype_string.go

@@ -26,100 +26,103 @@ func _() {
 	_ = x[actCancel-15]
 	_ = x[actChangeBorderLabel-16]
 	_ = x[actChangeHeader-17]
-	_ = x[actChangePreviewLabel-18]
+	_ = x[actChangeMulti-18]
-	_ = x[actChangePrompt-19]
+	_ = x[actChangePreviewLabel-19]
-	_ = x[actChangeQuery-20]
+	_ = x[actChangePrompt-20]
-	_ = x[actClearScreen-21]
+	_ = x[actChangeQuery-21]
-	_ = x[actClearQuery-22]
+	_ = x[actClearScreen-22]
-	_ = x[actClearSelection-23]
+	_ = x[actClearQuery-23]
-	_ = x[actClose-24]
+	_ = x[actClearSelection-24]
-	_ = x[actDeleteChar-25]
+	_ = x[actClose-25]
-	_ = x[actDeleteCharEof-26]
+	_ = x[actDeleteChar-26]
-	_ = x[actEndOfLine-27]
+	_ = x[actDeleteCharEof-27]
-	_ = x[actForwardChar-28]
+	_ = x[actEndOfLine-28]
-	_ = x[actForwardWord-29]
+	_ = x[actForwardChar-29]
-	_ = x[actKillLine-30]
+	_ = x[actForwardWord-30]
-	_ = x[actKillWord-31]
+	_ = x[actKillLine-31]
-	_ = x[actUnixLineDiscard-32]
+	_ = x[actKillWord-32]
-	_ = x[actUnixWordRubout-33]
+	_ = x[actUnixLineDiscard-33]
-	_ = x[actYank-34]
+	_ = x[actUnixWordRubout-34]
-	_ = x[actBackwardKillWord-35]
+	_ = x[actYank-35]
-	_ = x[actSelectAll-36]
+	_ = x[actBackwardKillWord-36]
-	_ = x[actDeselectAll-37]
+	_ = x[actSelectAll-37]
-	_ = x[actToggle-38]
+	_ = x[actDeselectAll-38]
-	_ = x[actToggleSearch-39]
+	_ = x[actToggle-39]
-	_ = x[actToggleAll-40]
+	_ = x[actToggleSearch-40]
-	_ = x[actToggleDown-41]
+	_ = x[actToggleAll-41]
-	_ = x[actToggleUp-42]
+	_ = x[actToggleDown-42]
-	_ = x[actToggleIn-43]
+	_ = x[actToggleUp-43]
-	_ = x[actToggleOut-44]
+	_ = x[actToggleIn-44]
-	_ = x[actToggleTrack-45]
+	_ = x[actToggleOut-45]
-	_ = x[actToggleHeader-46]
+	_ = x[actToggleTrack-46]
-	_ = x[actTrack-47]
+	_ = x[actToggleTrackCurrent-47]
-	_ = x[actDown-48]
+	_ = x[actToggleHeader-48]
-	_ = x[actUp-49]
+	_ = x[actTrackCurrent-49]
-	_ = x[actPageUp-50]
+	_ = x[actUntrackCurrent-50]
-	_ = x[actPageDown-51]
+	_ = x[actDown-51]
-	_ = x[actPosition-52]
+	_ = x[actUp-52]
-	_ = x[actHalfPageUp-53]
+	_ = x[actPageUp-53]
-	_ = x[actHalfPageDown-54]
+	_ = x[actPageDown-54]
-	_ = x[actOffsetUp-55]
+	_ = x[actPosition-55]
-	_ = x[actOffsetDown-56]
+	_ = x[actHalfPageUp-56]
-	_ = x[actJump-57]
+	_ = x[actHalfPageDown-57]
-	_ = x[actJumpAccept-58]
+	_ = x[actOffsetUp-58]
-	_ = x[actPrintQuery-59]
+	_ = x[actOffsetDown-59]
-	_ = x[actRefreshPreview-60]
+	_ = x[actJump-60]
-	_ = x[actReplaceQuery-61]
+	_ = x[actJumpAccept-61]
-	_ = x[actToggleSort-62]
+	_ = x[actPrintQuery-62]
-	_ = x[actShowPreview-63]
+	_ = x[actRefreshPreview-63]
-	_ = x[actHidePreview-64]
+	_ = x[actReplaceQuery-64]
-	_ = x[actTogglePreview-65]
+	_ = x[actToggleSort-65]
-	_ = x[actTogglePreviewWrap-66]
+	_ = x[actShowPreview-66]
-	_ = x[actTransform-67]
+	_ = x[actHidePreview-67]
-	_ = x[actTransformBorderLabel-68]
+	_ = x[actTogglePreview-68]
-	_ = x[actTransformHeader-69]
+	_ = x[actTogglePreviewWrap-69]
-	_ = x[actTransformPreviewLabel-70]
+	_ = x[actTransform-70]
-	_ = x[actTransformPrompt-71]
+	_ = x[actTransformBorderLabel-71]
-	_ = x[actTransformQuery-72]
+	_ = x[actTransformHeader-72]
-	_ = x[actPreview-73]
+	_ = x[actTransformPreviewLabel-73]
-	_ = x[actChangePreview-74]
+	_ = x[actTransformPrompt-74]
-	_ = x[actChangePreviewWindow-75]
+	_ = x[actTransformQuery-75]
-	_ = x[actPreviewTop-76]
+	_ = x[actPreview-76]
-	_ = x[actPreviewBottom-77]
+	_ = x[actChangePreview-77]
-	_ = x[actPreviewUp-78]
+	_ = x[actChangePreviewWindow-78]
-	_ = x[actPreviewDown-79]
+	_ = x[actPreviewTop-79]
-	_ = x[actPreviewPageUp-80]
+	_ = x[actPreviewBottom-80]
-	_ = x[actPreviewPageDown-81]
+	_ = x[actPreviewUp-81]
-	_ = x[actPreviewHalfPageUp-82]
+	_ = x[actPreviewDown-82]
-	_ = x[actPreviewHalfPageDown-83]
+	_ = x[actPreviewPageUp-83]
-	_ = x[actPrevHistory-84]
+	_ = x[actPreviewPageDown-84]
-	_ = x[actPrevSelected-85]
+	_ = x[actPreviewHalfPageUp-85]
-	_ = x[actPut-86]
+	_ = x[actPreviewHalfPageDown-86]
-	_ = x[actNextHistory-87]
+	_ = x[actPrevHistory-87]
-	_ = x[actNextSelected-88]
+	_ = x[actPrevSelected-88]
-	_ = x[actExecute-89]
+	_ = x[actPut-89]
-	_ = x[actExecuteSilent-90]
+	_ = x[actNextHistory-90]
-	_ = x[actExecuteMulti-91]
+	_ = x[actNextSelected-91]
-	_ = x[actSigStop-92]
+	_ = x[actExecute-92]
-	_ = x[actFirst-93]
+	_ = x[actExecuteSilent-93]
-	_ = x[actLast-94]
+	_ = x[actExecuteMulti-94]
-	_ = x[actReload-95]
+	_ = x[actSigStop-95]
-	_ = x[actReloadSync-96]
+	_ = x[actFirst-96]
-	_ = x[actDisableSearch-97]
+	_ = x[actLast-97]
-	_ = x[actEnableSearch-98]
+	_ = x[actReload-98]
-	_ = x[actSelect-99]
+	_ = x[actReloadSync-99]
-	_ = x[actDeselect-100]
+	_ = x[actDisableSearch-100]
-	_ = x[actUnbind-101]
+	_ = x[actEnableSearch-101]
-	_ = x[actRebind-102]
+	_ = x[actSelect-102]
-	_ = x[actBecome-103]
+	_ = x[actDeselect-103]
-	_ = x[actResponse-104]
+	_ = x[actUnbind-104]
-	_ = x[actShowHeader-105]
+	_ = x[actRebind-105]
-	_ = x[actHideHeader-106]
+	_ = x[actBecome-106]
+	_ = x[actResponse-107]
+	_ = x[actShowHeader-108]
+	_ = x[actHideHeader-109]
 }
 
-const _actionType_name = "actIgnoreactStartactClickactInvalidactCharactMouseactBeginningOfLineactAbortactAcceptactAcceptNonEmptyactAcceptOrPrintQueryactBackwardCharactBackwardDeleteCharactBackwardDeleteCharEofactBackwardWordactCancelactChangeBorderLabelactChangeHeaderactChangePreviewLabelactChangePromptactChangeQueryactClearScreenactClearQueryactClearSelectionactCloseactDeleteCharactDeleteCharEofactEndOfLineactForwardCharactForwardWordactKillLineactKillWordactUnixLineDiscardactUnixWordRuboutactYankactBackwardKillWordactSelectAllactDeselectAllactToggleactToggleSearchactToggleAllactToggleDownactToggleUpactToggleInactToggleOutactToggleTrackactToggleHeaderactTrackactDownactUpactPageUpactPageDownactPositionactHalfPageUpactHalfPageDownactOffsetUpactOffsetDownactJumpactJumpAcceptactPrintQueryactRefreshPreviewactReplaceQueryactToggleSortactShowPreviewactHidePreviewactTogglePreviewactTogglePreviewWrapactTransformactTransformBorderLabelactTransformHeaderactTransformPreviewLabelactTransformPromptactTransformQueryactPreviewactChangePreviewactChangePreviewWindowactPreviewTopactPreviewBottomactPreviewUpactPreviewDownactPreviewPageUpactPreviewPageDownactPreviewHalfPageUpactPreviewHalfPageDownactPrevHistoryactPrevSelectedactPutactNextHistoryactNextSelectedactExecuteactExecuteSilentactExecuteMultiactSigStopactFirstactLastactReloadactReloadSyncactDisableSearchactEnableSearchactSelectactDeselectactUnbindactRebindactBecomeactResponseactShowHeaderactHideHeader"
+const _actionType_name = "actIgnoreactStartactClickactInvalidactCharactMouseactBeginningOfLineactAbortactAcceptactAcceptNonEmptyactAcceptOrPrintQueryactBackwardCharactBackwardDeleteCharactBackwardDeleteCharEofactBackwardWordactCancelactChangeBorderLabelactChangeHeaderactChangeMultiactChangePreviewLabelactChangePromptactChangeQueryactClearScreenactClearQueryactClearSelectionactCloseactDeleteCharactDeleteCharEofactEndOfLineactForwardCharactForwardWordactKillLineactKillWordactUnixLineDiscardactUnixWordRuboutactYankactBackwardKillWordactSelectAllactDeselectAllactToggleactToggleSearchactToggleAllactToggleDownactToggleUpactToggleInactToggleOutactToggleTrackactToggleTrackCurrentactToggleHeaderactTrackCurrentactUntrackCurrentactDownactUpactPageUpactPageDownactPositionactHalfPageUpactHalfPageDownactOffsetUpactOffsetDownactJumpactJumpAcceptactPrintQueryactRefreshPreviewactReplaceQueryactToggleSortactShowPreviewactHidePreviewactTogglePreviewactTogglePreviewWrapactTransformactTransformBorderLabelactTransformHeaderactTransformPreviewLabelactTransformPromptactTransformQueryactPreviewactChangePreviewactChangePreviewWindowactPreviewTopactPreviewBottomactPreviewUpactPreviewDownactPreviewPageUpactPreviewPageDownactPreviewHalfPageUpactPreviewHalfPageDownactPrevHistoryactPrevSelectedactPutactNextHistoryactNextSelectedactExecuteactExecuteSilentactExecuteMultiactSigStopactFirstactLastactReloadactReloadSyncactDisableSearchactEnableSearchactSelectactDeselectactUnbindactRebindactBecomeactResponseactShowHeaderactHideHeader"
 
-var _actionType_index = [...]uint16{0, 9, 17, 25, 35, 42, 50, 68, 76, 85, 102, 123, 138, 159, 183, 198, 207, 227, 242, 263, 278, 292, 306, 319, 336, 344, 357, 373, 385, 399, 413, 424, 435, 453, 470, 477, 496, 508, 522, 531, 546, 558, 571, 582, 593, 605, 619, 634, 642, 649, 654, 663, 674, 685, 698, 713, 724, 737, 744, 757, 770, 787, 802, 815, 829, 843, 859, 879, 891, 914, 932, 956, 974, 991, 1001, 1017, 1039, 1052, 1068, 1080, 1094, 1110, 1128, 1148, 1170, 1184, 1199, 1205, 1219, 1234, 1244, 1260, 1275, 1285, 1293, 1300, 1309, 1322, 1338, 1353, 1362, 1373, 1382, 1391, 1400, 1411, 1424, 1437}
+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, 413, 427, 438, 449, 467, 484, 491, 510, 522, 536, 545, 560, 572, 585, 596, 607, 619, 633, 654, 669, 684, 701, 708, 713, 722, 733, 744, 757, 772, 783, 796, 803, 816, 829, 846, 861, 874, 888, 902, 918, 938, 950, 973, 991, 1015, 1033, 1050, 1060, 1076, 1098, 1111, 1127, 1139, 1153, 1169, 1187, 1207, 1229, 1243, 1258, 1264, 1278, 1293, 1303, 1319, 1334, 1344, 1352, 1359, 1368, 1381, 1397, 1412, 1421, 1432, 1441, 1450, 1459, 1470, 1483, 1496}
 
 func (i actionType) String() string {
 	if i < 0 || i >= actionType(len(_actionType_index)-1) {

src/algo/algo.go

@@ -153,6 +153,12 @@ var (
 	bonusBoundaryDelimiter int16 = bonusBoundary + 1
 
 	initialCharClass charClass = 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
@@ -187,6 +193,27 @@ func Init(scheme string) bool {
 	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
 }
 
@@ -214,21 +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
-	} else if strings.ContainsRune(whiteChars, char) {
-		return charWhite
-	} else if strings.ContainsRune(delimiterChars, char) {
-		return charDelimiter
-	}
-	return charNonWord
-}
-
 func charClassOfNonAscii(char rune) charClass {
 	if unicode.IsLower(char) {
 		return charLower
@@ -248,31 +260,36 @@ func charClassOfNonAscii(char rune) charClass {
 
 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 class > charNonWord {
-		if prevClass == charWhite {
+		switch prevClass {
+		case charWhite:
 			// Word boundary after whitespace
 			return bonusBoundaryWhite
-		} else if prevClass == charDelimiter {
+		case charDelimiter:
 			// Word boundary after a delimiter character
 			return bonusBoundaryDelimiter
-		} else if prevClass == charNonWord {
+		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
-	} else if class == charWhite {
+	case charWhite:
 		return bonusBoundaryWhite
 	}
 	return 0
@@ -282,7 +299,7 @@ func bonusAt(input *util.Chars, idx int) int16 {
 	if idx == 0 {
 		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 {
@@ -335,30 +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) {
@@ -407,6 +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.
@@ -415,10 +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
@@ -431,20 +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), 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)
@@ -454,28 +490,28 @@ 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 {
 					break
 				}
@@ -483,24 +519,24 @@ func FuzzyMatchV2(caseSensitive bool, normalize bool, forward bool, input *util.
 			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
 	}
 
@@ -597,7 +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
 				}
@@ -610,7 +646,7 @@ 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
@@ -640,7 +676,7 @@ 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 {
@@ -678,7 +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
 	}
 
@@ -772,7 +809,8 @@ 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
 	}
 

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)
 }

src/ansi.go

@@ -312,7 +312,7 @@ func parseAnsiCode(s string, delimiter byte) (int, byte, 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 sbytes(s) {
 			ch -= '0'
 			if ch > 9 {
 				return -1, delimiter, remaining

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

src/core.go

@@ -3,8 +3,9 @@ package fzf
 
 import (
 	"fmt"
-	"os"
+	"sync"
 	"time"
+	"unsafe"
 
 	"github.com/junegunn/fzf/src/util"
 )
@@ -18,8 +19,18 @@ Matcher  -> EvtSearchFin      -> Terminal (update list)
 Matcher  -> EvtHeader         -> Terminal (update header)
 */
 
+func ustring(data []byte) string {
+	return unsafe.String(unsafe.SliceData(data), len(data))
+}
+
+func sbytes(data string) []byte {
+	return unsafe.Slice(unsafe.StringData(data), len(data))
+}
+
 // Run starts fzf
 func Run(opts *Options, version string, revision string) {
+	defer util.RunAtExitFuncs()
+
 	sort := opts.Sort > 0
 	sortCriteria = opts.Criteria
 
@@ -29,7 +40,7 @@ func Run(opts *Options, version string, revision string) {
 		} else {
 			fmt.Println(version)
 		}
-		os.Exit(exitOk)
+		util.Exit(exitOk)
 	}
 
 	// Event channel
@@ -45,16 +56,16 @@ 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(ustring(data), lineAnsiState, nil)
 				lineAnsiState = newState
-				return util.ToChars([]byte(trimmed)), offsets
+				return util.ToChars(sbytes(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(ustring(data), nil, nil)
-				return util.ToChars([]byte(trimmed)), nil
+				return util.ToChars(sbytes(trimmed)), nil
 			}
 		}
 	}
@@ -66,7 +77,7 @@ func Run(opts *Options, version string, revision string) {
 	if len(opts.WithNth) == 0 {
 		chunkList = NewChunkList(func(item *Item, data []byte) bool {
 			if len(header) < opts.HeaderLines {
-				header = append(header, string(data))
+				header = append(header, ustring(data))
 				eventBox.Set(EvtHeader, header)
 				return false
 			}
@@ -77,7 +88,7 @@ func Run(opts *Options, version string, revision string) {
 		})
 	} else {
 		chunkList = NewChunkList(func(item *Item, data []byte) bool {
-			tokens := Tokenize(string(data), opts.Delimiter)
+			tokens := Tokenize(ustring(data), opts.Delimiter)
 			if opts.Ansi && opts.Theme.Colored && len(tokens) > 1 {
 				var ansiState *ansiState
 				if prevLineAnsiState != nil {
@@ -101,7 +112,7 @@ 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(sbytes(transformed))
 			item.text.TrimTrailingWhitespaces()
 			item.text.Index = itemIndex
 			item.origText = &data
@@ -110,14 +121,17 @@ func Run(opts *Options, version string, revision string) {
 		})
 	}
 
+	// Process executor
+	executor := util.NewExecutor(opts.WithShell)
+
 	// 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.WalkerRoot, opts.WalkerOpts, opts.WalkerSkip)
 	}
 
 	// Matcher
@@ -154,18 +168,21 @@ 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.WalkerRoot, opts.WalkerOpts, opts.WalkerSkip)
 		} else {
 			eventBox.Unwatch(EvtReadNew)
 			eventBox.WaitFor(EvtReadFin)
@@ -180,9 +197,9 @@ func Run(opts *Options, version string, revision string) {
 			}
 		}
 		if found {
-			os.Exit(exitOk)
+			util.Exit(exitOk)
 		}
-		os.Exit(exitNoMatch)
+		util.Exit(exitNoMatch)
 	}
 
 	// Synchronous search
@@ -195,7 +212,7 @@ func Run(opts *Options, version string, revision string) {
 	go matcher.Loop()
 
 	// Terminal I/O
-	terminal := NewTerminal(opts, eventBox)
+	terminal := NewTerminal(opts, eventBox, executor)
 	maxFit := 0 // Maximum number of items that can fit on screen
 	padHeight := 0
 	heightUnknown := opts.Height.auto
@@ -213,6 +230,7 @@ func Run(opts *Options, version string, revision string) {
 	reading := true
 	ticks := 0
 	var nextCommand *string
+	var nextEnviron []string
 	eventBox.Watch(EvtReadNew)
 	total := 0
 	query := []rune{}
@@ -232,23 +250,20 @@ func Run(opts *Options, version string, revision string) {
 	useSnapshot := false
 	var snapshot []*Chunk
 	var count int
-	restart := func(command string) {
+	restart := func(command string, environ []string) {
 		reading = true
 		chunkList.Clear()
 		itemIndex = 0
 		inputRevision++
 		header = make([]string, 0, opts.HeaderLines)
-		go reader.restart(command)
+		go reader.restart(command, environ)
 	}
 	for {
 		delay := true
 		ticks++
 		input := func() []rune {
-			reloaded := snapshotRevision != inputRevision
 			paused, input := terminal.Input()
-			if reloaded && paused {
+			if !paused {
-				query = []rune{}
-			} else if !paused {
 				query = input
 			}
 			return query
@@ -263,11 +278,12 @@ func Run(opts *Options, version string, revision string) {
 					if reading {
 						reader.terminate()
 					}
-					os.Exit(value.(int))
+					util.Exit(value.(int))
 				case EvtReadNew, EvtReadFin:
 					if evt == EvtReadFin && nextCommand != nil {
-						restart(*nextCommand)
+						restart(*nextCommand, nextEnviron)
 						nextCommand = nil
+						nextEnviron = nil
 						break
 					} else {
 						reading = reading && evt == EvtReadNew
@@ -276,14 +292,16 @@ func Run(opts *Options, version string, revision string) {
 						useSnapshot = false
 					}
 					if !useSnapshot {
+						if snapshotRevision != inputRevision {
+							query = []rune{}
+						}
 						snapshot, count = chunkList.Snapshot()
 						snapshotRevision = inputRevision
 					}
 					total = count
 					terminal.UpdateCount(total, !reading, value.(*string))
 					if opts.Sync {
-						opts.Sync = false
+						terminal.UpdateList(PassMerger(&snapshot, opts.Tac, snapshotRevision), false)
-						terminal.UpdateList(PassMerger(&snapshot, opts.Tac, snapshotRevision))
 					}
 					if heightUnknown && !deferred {
 						determine(!reading)
@@ -292,11 +310,13 @@ func Run(opts *Options, version string, revision string) {
 
 				case EvtSearchNew:
 					var command *string
+					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
@@ -306,18 +326,22 @@ func Run(opts *Options, version string, revision string) {
 						if reading {
 							reader.terminate()
 							nextCommand = command
+							nextEnviron = environ
 						} else {
-							restart(*command)
+							restart(*command, environ)
 						}
 					}
 					if !changed {
 						break
 					}
 					if !useSnapshot {
-						newSnapshot, _ := chunkList.Snapshot()
+						newSnapshot, newCount := chunkList.Snapshot()
 						// 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 || len(newSnapshot) > 0 {
+						if command == nil || newCount > 0 {
+							if snapshotRevision != inputRevision {
+								query = []rune{}
+							}
 							snapshot = newSnapshot
 							snapshotRevision = inputRevision
 						}
@@ -355,14 +379,14 @@ func Run(opts *Options, version string, revision string) {
 										opts.Printer(val.Get(i).item.AsString(opts.Ansi))
 									}
 									if count > 0 {
-										os.Exit(exitOk)
+										util.Exit(exitOk)
 									}
-									os.Exit(exitNoMatch)
+									util.Exit(exitNoMatch)
 								}
 								determine(val.final)
 							}
 						}
-						terminal.UpdateList(val)
+						terminal.UpdateList(val, true)
 					}
 				}
 			}

src/options.go

@@ -52,12 +52,12 @@ const usage = `usage: fzf [options]
     --hscroll-off=COLS     Number of screen columns to keep to the right of the
                            highlighted substring (default: 10)
     --filepath-word        Make word-wise movements respect path separators
-    --jump-labels=CHARS    Label characters for jump and jump-accept
+    --jump-labels=CHARS    Label characters for jump mode
 
   Layout
     --height=[~]HEIGHT[%]  Display fzf window below the cursor with the given
                            height instead of using fullscreen.
-                           A negative value is calcalated as the terminal height
+                           A negative value is calculated as the terminal height
                            minus the given value.
                            If prefixed with '~', fzf will determine the height
                            according to the input size.
@@ -75,7 +75,7 @@ const usage = `usage: fzf [options]
     --margin=MARGIN        Screen margin (TRBL | TB,RL | T,RL,B | T,R,B,L)
     --padding=PADDING      Padding inside border (TRBL | TB,RL | T,RL,B | T,R,B,L)
     --info=STYLE           Finder info style
-                           [default|right|hidden|inline[:SEPARATOR]|inline-right]
+                           [default|right|hidden|inline[-right][:PREFIX]]
     --separator=STR        String to form horizontal separator on info line
     --no-separator         Hide info line separator
     --scrollbar[=C1[C2]]   Scrollbar character(s) (each for main and preview window)
@@ -120,19 +120,31 @@ const usage = `usage: fzf [options]
     --read0                Read input delimited by ASCII NUL characters
     --print0               Print output delimited by ASCII NUL characters
     --sync                 Synchronous search for multi-staged filtering
+    --with-shell=STR       Shell command and flags to start child processes with
     --listen[=[ADDR:]PORT] Start HTTP server to receive actions (POST /)
                            (To allow remote process execution, use --listen-unsafe)
     --version              Display version information and exit
 
+  Directory traversal      (Only used when $FZF_DEFAULT_COMMAND is not set)
+    --walker=OPTS          [file][,dir][,follow][,hidden] (default: file,follow,hidden)
+    --walker-root=DIR      Root directory from which to start walker (default: .)
+    --walker-skip=DIRS     Comma-separated list of directory names to skip
+                           (default: .git,node_modules)
+
+  Shell integration
+    --bash                 Print script to set up Bash shell integration
+    --zsh                  Print script to set up Zsh shell integration
+    --fish                 Print script to set up Fish shell integration
+
   Environment variables
     FZF_DEFAULT_COMMAND    Default command to use when input is tty
-    FZF_DEFAULT_OPTS       Default options
+    FZF_DEFAULT_OPTS       Default options (e.g. '--layout=reverse --info=inline')
-                           (e.g. '--layout=reverse --inline-info')
+    FZF_DEFAULT_OPTS_FILE  Location of the file to read default options from
     FZF_API_KEY            X-API-Key header for HTTP server (--listen)
 
 `
 
-const defaultInfoSep = " < "
+const defaultInfoPrefix = " < "
 
 // Case denotes case-sensitivity of search
 type Case int
@@ -206,10 +218,6 @@ const (
 	infoHidden
 )
 
-func (s infoStyle) noExtraLine() bool {
-	return s == infoInline || s == infoInlineRight || s == infoHidden
-}
-
 type labelOpts struct {
 	label  string
 	column int
@@ -274,8 +282,18 @@ func firstLine(s string) string {
 	return strings.SplitN(s, "\n", 2)[0]
 }
 
+type walkerOpts struct {
+	file   bool
+	dir    bool
+	hidden bool
+	follow bool
+}
+
 // Options stores the values of command-line options
 type Options struct {
+	Bash         bool
+	Zsh          bool
+	Fish         bool
 	Fuzzy        bool
 	FuzzyAlgo    algo.Algo
 	Scheme       string
@@ -306,7 +324,7 @@ type Options struct {
 	ScrollOff    int
 	FileWord     bool
 	InfoStyle    infoStyle
-	InfoSep      string
+	InfoPrefix   string
 	Separator    *string
 	JumpLabels   string
 	Prompt       string
@@ -339,10 +357,28 @@ type Options struct {
 	Unicode      bool
 	Ambidouble   bool
 	Tabstop      int
+	WithShell    string
 	ListenAddr   *listenAddress
 	Unsafe       bool
 	ClearOnExit  bool
+	WalkerOpts   walkerOpts
+	WalkerRoot   string
+	WalkerSkip   []string
 	Version      bool
+	CPUProfile   string
+	MEMProfile   string
+	BlockProfile string
+	MutexProfile string
+}
+
+func filterNonEmpty(input []string) []string {
+	output := make([]string, 0, len(input))
+	for _, str := range input {
+		if len(str) > 0 {
+			output = append(output, str)
+		}
+	}
+	return output
 }
 
 func defaultPreviewOpts(command string) previewOpts {
@@ -351,6 +387,9 @@ func defaultPreviewOpts(command string) previewOpts {
 
 func defaultOptions() *Options {
 	return &Options{
+		Bash:         false,
+		Zsh:          false,
+		Fish:         false,
 		Fuzzy:        true,
 		FuzzyAlgo:    algo.FuzzyMatchV2,
 		Scheme:       "default",
@@ -413,17 +452,22 @@ func defaultOptions() *Options {
 		PreviewLabel: labelOpts{},
 		Unsafe:       false,
 		ClearOnExit:  true,
+		WalkerOpts:   walkerOpts{file: true, hidden: true, follow: true},
+		WalkerRoot:   ".",
+		WalkerSkip:   []string{".git", "node_modules"},
 		Version:      false}
 }
 
 func help(code int) {
 	os.Stdout.WriteString(usage)
-	os.Exit(code)
+	util.Exit(code)
 }
 
+var errorContext = ""
+
 func errorExit(msg string) {
-	os.Stderr.WriteString(msg + "\n")
+	os.Stderr.WriteString(errorContext + msg + "\n")
-	os.Exit(exitError)
+	util.Exit(exitError)
 }
 
 func optString(arg string, prefixes ...string) (bool, string) {
@@ -628,8 +672,8 @@ func parseKeyChordsImpl(str string, message string, exit func(string)) map[tui.E
 			add(tui.CtrlM)
 		case "space":
 			chords[tui.Key(' ')] = key
-		case "bspace", "bs":
+		case "backspace", "bspace", "bs":
-			add(tui.BSpace)
+			add(tui.Backspace)
 		case "ctrl-space":
 			add(tui.CtrlSpace)
 		case "ctrl-delete":
@@ -660,12 +704,16 @@ func parseKeyChordsImpl(str string, message string, exit func(string)) map[tui.E
 			add(tui.One)
 		case "zero":
 			add(tui.Zero)
+		case "jump":
+			add(tui.Jump)
+		case "jump-cancel":
+			add(tui.JumpCancel)
 		case "alt-enter", "alt-return":
 			chords[tui.CtrlAltKey('m')] = key
 		case "alt-space":
 			chords[tui.AltKey(' ')] = key
-		case "alt-bs", "alt-bspace":
+		case "alt-bs", "alt-bspace", "alt-backspace":
-			add(tui.AltBS)
+			add(tui.AltBackspace)
 		case "alt-up":
 			add(tui.AltUp)
 		case "alt-down":
@@ -677,11 +725,11 @@ func parseKeyChordsImpl(str string, message string, exit func(string)) map[tui.E
 		case "tab":
 			add(tui.Tab)
 		case "btab", "shift-tab":
-			add(tui.BTab)
+			add(tui.ShiftTab)
 		case "esc":
-			add(tui.ESC)
+			add(tui.Esc)
-		case "del":
+		case "delete", "del":
-			add(tui.Del)
+			add(tui.Delete)
 		case "home":
 			add(tui.Home)
 		case "end":
@@ -689,27 +737,27 @@ func parseKeyChordsImpl(str string, message string, exit func(string)) map[tui.E
 		case "insert":
 			add(tui.Insert)
 		case "pgup", "page-up":
-			add(tui.PgUp)
+			add(tui.PageUp)
 		case "pgdn", "page-down":
-			add(tui.PgDn)
+			add(tui.PageDown)
 		case "alt-shift-up", "shift-alt-up":
-			add(tui.AltSUp)
+			add(tui.AltShiftUp)
 		case "alt-shift-down", "shift-alt-down":
-			add(tui.AltSDown)
+			add(tui.AltShiftDown)
 		case "alt-shift-left", "shift-alt-left":
-			add(tui.AltSLeft)
+			add(tui.AltShiftLeft)
 		case "alt-shift-right", "shift-alt-right":
-			add(tui.AltSRight)
+			add(tui.AltShiftRight)
 		case "shift-up":
-			add(tui.SUp)
+			add(tui.ShiftUp)
 		case "shift-down":
-			add(tui.SDown)
+			add(tui.ShiftDown)
 		case "shift-left":
-			add(tui.SLeft)
+			add(tui.ShiftLeft)
 		case "shift-right":
-			add(tui.SRight)
+			add(tui.ShiftRight)
 		case "shift-delete":
-			add(tui.SDelete)
+			add(tui.ShiftDelete)
 		case "left-click":
 			add(tui.LeftClick)
 		case "right-click":
@@ -964,6 +1012,30 @@ func parseTheme(defaultTheme *tui.ColorTheme, str string) *tui.ColorTheme {
 	return theme
 }
 
+func parseWalkerOpts(str string) walkerOpts {
+	opts := walkerOpts{}
+	for _, str := range strings.Split(strings.ToLower(str), ",") {
+		switch str {
+		case "file":
+			opts.file = true
+		case "dir":
+			opts.dir = true
+		case "hidden":
+			opts.hidden = true
+		case "follow":
+			opts.follow = true
+		case "":
+			// Ignored
+		default:
+			errorExit("invalid walker option: " + str)
+		}
+	}
+	if !opts.file && !opts.dir {
+		errorExit("at least one of 'file' or 'dir' should be specified")
+	}
+	return opts
+}
+
 var (
 	executeRegexp    *regexp.Regexp
 	splitRegexp      *regexp.Regexp
@@ -985,7 +1057,7 @@ const (
 
 func init() {
 	executeRegexp = regexp.MustCompile(
-		`(?si)[:+](become|execute(?:-multi|-silent)?|reload(?:-sync)?|preview|(?:change|transform)-(?:header|query|prompt|border-label|preview-label)|transform|change-preview-window|change-preview|(?:re|un)bind|pos|put)`)
+		`(?si)[:+](become|execute(?:-multi|-silent)?|reload(?:-sync)?|preview|(?:change|transform)-(?:header|query|prompt|border-label|preview-label)|transform|change-(?:preview-window|preview|multi)|(?:re|un)bind|pos|put)`)
 	splitRegexp = regexp.MustCompile("[,:]+")
 	actionNameRegexp = regexp.MustCompile("(?i)^[a-z-]+")
 }
@@ -1145,14 +1217,18 @@ func parseActionList(masked string, original string, prevActions []*action, putA
 			appendAction(actToggleSearch)
 		case "toggle-track":
 			appendAction(actToggleTrack)
+		case "toggle-track-current":
+			appendAction(actToggleTrackCurrent)
 		case "toggle-header":
 			appendAction(actToggleHeader)
 		case "show-header":
 			appendAction(actShowHeader)
 		case "hide-header":
 			appendAction(actHideHeader)
-		case "track":
+		case "track", "track-current":
-			appendAction(actTrack)
+			appendAction(actTrackCurrent)
+		case "untrack-current":
+			appendAction(actUntrackCurrent)
 		case "select":
 			appendAction(actSelect)
 		case "select-all":
@@ -1232,6 +1308,8 @@ func parseActionList(masked string, original string, prevActions []*action, putA
 			if t == actIgnore {
 				if specIndex == 0 && specLower == "" {
 					actions = append(prevActions, actions...)
+				} else if specLower == "change-multi" {
+					appendAction(actChangeMulti)
 				} else {
 					exit("unknown action: " + spec)
 				}
@@ -1251,10 +1329,6 @@ func parseActionList(masked string, original string, prevActions []*action, putA
 					actions = append(actions, &action{t: t, a: actionArg})
 				}
 				switch t {
-				case actBecome:
-					if util.IsWindows() {
-						exit("become action is not supported on Windows")
-					}
 				case actUnbind, actRebind:
 					parseKeyChordsImpl(actionArg, spec[0:offset]+" target required", exit)
 				case actChangePreviewWindow:
@@ -1333,6 +1407,8 @@ func isExecuteAction(str string) actionType {
 		return actChangePrompt
 	case "change-query":
 		return actChangeQuery
+	case "change-multi":
+		return actChangeMulti
 	case "pos":
 		return actPosition
 	case "execute":
@@ -1436,17 +1512,24 @@ func parseInfoStyle(str string) (infoStyle, string) {
 	case "right":
 		return infoRight, ""
 	case "inline":
-		return infoInline, defaultInfoSep
+		return infoInline, defaultInfoPrefix
 	case "inline-right":
 		return infoInlineRight, ""
 	case "hidden":
 		return infoHidden, ""
 	default:
-		prefix := "inline:"
+		type infoSpec struct {
-		if strings.HasPrefix(str, prefix) {
+			name  string
-			return infoInline, strings.ReplaceAll(str[len(prefix):], "\n", " ")
+			style infoStyle
 		}
-		errorExit("invalid info style (expected: default|right|hidden|inline[:SEPARATOR]|inline-right)")
+		for _, spec := range []infoSpec{
+			{"inline", infoInline},
+			{"inline-right", infoInlineRight}} {
+			if strings.HasPrefix(str, spec.name+":") {
+				return spec.style, strings.ReplaceAll(str[len(spec.name)+1:], "\n", " ")
+			}
+		}
+		errorExit("invalid info style (expected: default|right|hidden|inline[-right][:PREFIX])")
 	}
 	return infoDefault, ""
 }
@@ -1600,6 +1683,21 @@ func parseOptions(opts *Options, allArgs []string) {
 	for i := 0; i < len(allArgs); i++ {
 		arg := allArgs[i]
 		switch arg {
+		case "--bash":
+			opts.Bash = true
+			if opts.Zsh || opts.Fish {
+				errorExit("cannot specify --bash with --zsh or --fish")
+			}
+		case "--zsh":
+			opts.Zsh = true
+			if opts.Bash || opts.Fish {
+				errorExit("cannot specify --zsh with --bash or --fish")
+			}
+		case "--fish":
+			opts.Fish = true
+			if opts.Bash || opts.Zsh {
+				errorExit("cannot specify --fish with --bash or --zsh")
+			}
 		case "-h", "--help":
 			help(exitOk)
 		case "-x", "--extended":
@@ -1722,13 +1820,13 @@ func parseOptions(opts *Options, allArgs []string) {
 		case "--no-filepath-word":
 			opts.FileWord = false
 		case "--info":
-			opts.InfoStyle, opts.InfoSep = parseInfoStyle(
+			opts.InfoStyle, opts.InfoPrefix = parseInfoStyle(
 				nextString(allArgs, &i, "info style required"))
 		case "--no-info":
 			opts.InfoStyle = infoHidden
 		case "--inline-info":
 			opts.InfoStyle = infoInline
-			opts.InfoSep = defaultInfoSep
+			opts.InfoPrefix = defaultInfoPrefix
 		case "--no-inline-info":
 			opts.InfoStyle = infoDefault
 		case "--separator":
@@ -1780,9 +1878,7 @@ func parseOptions(opts *Options, allArgs []string) {
 			opts.Marker = firstLine(nextString(allArgs, &i, "selected sign string required"))
 		case "--sync":
 			opts.Sync = true
-		case "--no-sync":
+		case "--no-sync", "--async":
-			opts.Sync = false
-		case "--async":
 			opts.Sync = false
 		case "--no-history":
 			opts.History = nil
@@ -1859,12 +1955,14 @@ func parseOptions(opts *Options, allArgs []string) {
 				nextString(allArgs, &i, "padding required (TRBL / TB,RL / T,RL,B / T,R,B,L)"))
 		case "--tabstop":
 			opts.Tabstop = nextInt(allArgs, &i, "tab stop required")
+		case "--with-shell":
+			opts.WithShell = nextString(allArgs, &i, "shell command and flags required")
 		case "--listen", "--listen-unsafe":
 			given, str := optionalNextString(allArgs, &i)
 			addr := defaultListenAddr
 			if given {
 				var err error
-				err, addr = parseListenAddress(str)
+				addr, err = parseListenAddress(str)
 				if err != nil {
 					errorExit(err.Error())
 				}
@@ -1878,8 +1976,22 @@ func parseOptions(opts *Options, allArgs []string) {
 			opts.ClearOnExit = true
 		case "--no-clear":
 			opts.ClearOnExit = false
+		case "--walker":
+			opts.WalkerOpts = parseWalkerOpts(nextString(allArgs, &i, "walker options required [file][,dir][,follow][,hidden]"))
+		case "--walker-root":
+			opts.WalkerRoot = nextString(allArgs, &i, "directory required")
+		case "--walker-skip":
+			opts.WalkerSkip = filterNonEmpty(strings.Split(nextString(allArgs, &i, "directory names to ignore required"), ","))
 		case "--version":
 			opts.Version = true
+		case "--profile-cpu":
+			opts.CPUProfile = nextString(allArgs, &i, "file path required: cpu")
+		case "--profile-mem":
+			opts.MEMProfile = nextString(allArgs, &i, "file path required: mem")
+		case "--profile-block":
+			opts.BlockProfile = nextString(allArgs, &i, "file path required: block")
+		case "--profile-mutex":
+			opts.MutexProfile = nextString(allArgs, &i, "file path required: mutex")
 		case "--":
 			// Ignored
 		default:
@@ -1924,7 +2036,7 @@ func parseOptions(opts *Options, allArgs []string) {
 			} else if match, value := optString(arg, "--layout="); match {
 				opts.Layout = parseLayout(value)
 			} else if match, value := optString(arg, "--info="); match {
-				opts.InfoStyle, opts.InfoSep = parseInfoStyle(value)
+				opts.InfoStyle, opts.InfoPrefix = parseInfoStyle(value)
 			} else if match, value := optString(arg, "--separator="); match {
 				opts.Separator = &value
 			} else if match, value := optString(arg, "--scrollbar="); match {
@@ -1961,20 +2073,28 @@ func parseOptions(opts *Options, allArgs []string) {
 				opts.Padding = parseMargin("padding", value)
 			} else if match, value := optString(arg, "--tabstop="); match {
 				opts.Tabstop = atoi(value)
+			} else if match, value := optString(arg, "--with-shell="); match {
+				opts.WithShell = value
 			} else if match, value := optString(arg, "--listen="); match {
-				err, addr := parseListenAddress(value)
+				addr, err := parseListenAddress(value)
 				if err != nil {
 					errorExit(err.Error())
 				}
 				opts.ListenAddr = &addr
 				opts.Unsafe = false
 			} else if match, value := optString(arg, "--listen-unsafe="); match {
-				err, addr := parseListenAddress(value)
+				addr, err := parseListenAddress(value)
 				if err != nil {
 					errorExit(err.Error())
 				}
 				opts.ListenAddr = &addr
 				opts.Unsafe = true
+			} else if match, value := optString(arg, "--walker="); match {
+				opts.WalkerOpts = parseWalkerOpts(value)
+			} else if match, value := optString(arg, "--walker-root="); match {
+				opts.WalkerRoot = value
+			} else if match, value := optString(arg, "--walker-skip="); match {
+				opts.WalkerSkip = filterNonEmpty(strings.Split(value, ","))
 			} else if match, value := optString(arg, "--hscroll-off="); match {
 				opts.HscrollOff = atoi(value)
 			} else if match, value := optString(arg, "--scroll-off="); match {
@@ -2143,9 +2263,7 @@ func postProcessOptions(opts *Options) {
 		theme.Spinner = boldify(theme.Spinner)
 	}
 
-	if opts.Scheme != "default" {
 	processScheme(opts)
-	}
 }
 
 func expectsArbitraryString(opt string) bool {
@@ -2167,15 +2285,43 @@ func ParseOptions() *Options {
 		}
 	}
 
-	// Options from Env var
+	// 1. Options from $FZF_DEFAULT_OPTS_FILE
-	words, _ := shellwords.Parse(os.Getenv("FZF_DEFAULT_OPTS"))
+	if path := os.Getenv("FZF_DEFAULT_OPTS_FILE"); path != "" {
+		bytes, err := os.ReadFile(path)
+		if err != nil {
+			errorContext = "$FZF_DEFAULT_OPTS_FILE: "
+			errorExit(err.Error())
+		}
+
+		words, parseErr := shellwords.Parse(string(bytes))
+		if parseErr != nil {
+			errorContext = path + ": "
+			errorExit(parseErr.Error())
+		}
+		if len(words) > 0 {
+			parseOptions(opts, words)
+		}
+	}
+
+	// 2. Options from $FZF_DEFAULT_OPTS string
+	words, parseErr := shellwords.Parse(os.Getenv("FZF_DEFAULT_OPTS"))
+	errorContext = "$FZF_DEFAULT_OPTS: "
+	if parseErr != nil {
+		errorExit(parseErr.Error())
+	}
 	if len(words) > 0 {
 		parseOptions(opts, words)
 	}
 
-	// Options from command-line arguments
+	// 3. Options from command-line arguments
+	errorContext = ""
 	parseOptions(opts, os.Args[1:])
 
+	if err := opts.initProfiling(); err != nil {
+		errorExit("failed to start pprof profiles: " + err.Error())
+	}
+
 	postProcessOptions(opts)
+
 	return opts
 }

src/options_no_pprof.go

@@ -0,0 +1,11 @@
+//go:build !pprof
+// +build !pprof
+
+package fzf
+
+func (o *Options) initProfiling() error {
+	if o.CPUProfile != "" || o.MEMProfile != "" || o.BlockProfile != "" || o.MutexProfile != "" {
+		errorExit("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

@@ -170,8 +170,8 @@ func TestParseKeys(t *testing.T) {
 	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")
@@ -182,16 +182,16 @@ func TestParseKeys(t *testing.T) {
 		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) {

src/pattern.go

@@ -209,11 +209,10 @@ func parseTerms(fuzzy bool, caseMode Case, normalize bool, str string) []termSet
 			// 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

src/reader.go

@@ -1,24 +1,24 @@
 package fzf
 
 import (
-	"bufio"
+	"bytes"
 	"context"
 	"io"
 	"os"
 	"os/exec"
-	"path"
 	"path/filepath"
 	"sync"
 	"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
@@ -31,8 +31,8 @@ type Reader struct {
 }
 
 // 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, false, wait}
 }
 
 func (r *Reader) startEventPoller() {
@@ -77,48 +77,33 @@ 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 {
 		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 string, environ []string) {
 	r.event = int32(EvtReady)
 	r.startEventPoller()
-	success := r.readFromCommand(nil, command)
+	success := r.readFromCommand(command, environ)
 	r.fin(success)
 }
 
 // ReadSource reads data from the default command or from standard input
-func (r *Reader) ReadSource() {
+func (r *Reader) ReadSource(root string, opts walkerOpts, ignores []string) {
 	r.startEventPoller()
 	var success bool
 	if util.IsTty() {
-		// The default command for *nix requires a shell that supports "pipefail"
-		// https://unix.stackexchange.com/a/654932/62171
-		shell := "bash"
-		currentShell := os.Getenv("SHELL")
-		currentShellName := path.Base(currentShell)
-		for _, shellName := range []string{"bash", "zsh", "ksh", "ash", "hush", "mksh", "yash"} {
-			if currentShellName == shellName {
-				shell = currentShell
-				break
-			}
-		}
 		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()
+			// We can't export FZF_* environment variables to the default command
-			}
+			success = r.readFromCommand(cmd, nil)
-		} else {
-			success = r.readFromCommand(nil, cmd)
 		}
 	} else {
 		success = r.readFromStdin()
@@ -127,33 +112,91 @@ 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 {
-				// 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 {
 				break
 			}
 		}
+
+		// 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))
+	}
 }
 
 func (r *Reader) readFromStdin() bool {
@@ -161,16 +204,28 @@ func (r *Reader) readFromStdin() bool {
 	return true
 }
 
-func (r *Reader) readFiles() bool {
+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{Follow: opts.follow}
+	fn := func(path string, de os.DirEntry, err error) error {
+		if err != nil {
+			return nil
+		}
 		path = filepath.Clean(path)
 		if path != "." {
-			isDir := mode.Mode().IsDir()
+			isDir := de.IsDir()
-			if isDir && filepath.Base(path)[0] == '.' {
+			if isDir {
+				base := filepath.Base(path)
+				if !opts.hidden && base[0] == '.' {
 					return filepath.SkipDir
 				}
-			if !isDir && r.pusher([]byte(path)) {
+				for _, ignore := range ignores {
+					if ignore == base {
+						return filepath.SkipDir
+					}
+				}
+			}
+			if ((opts.file && !isDir) || (opts.dir && isDir)) && r.pusher([]byte(path)) {
 				atomic.StoreInt32(&r.event, int32(EvtReadNew))
 			}
 		}
@@ -181,20 +236,16 @@ 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()
 	if err != 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/server.go

@@ -32,6 +32,7 @@ const (
 	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
 )
@@ -53,47 +54,47 @@ func (addr listenAddress) IsLocal() bool {
 
 var defaultListenAddr = listenAddress{"localhost", 0}
 
-func parseListenAddress(address string) (error, listenAddress) {
+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 fmt.Errorf("invalid listen address: %s", address), defaultListenAddr
+		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 fmt.Errorf("invalid listen port: %s", portStr), defaultListenAddr
+		return defaultListenAddr, fmt.Errorf("invalid listen port: %s", portStr)
 	}
 	if len(parts[0]) == 0 {
 		parts[0] = "localhost"
 	}
-	return nil, listenAddress{parts[0], port}
+	return listenAddress{parts[0], port}, nil
 }
 
-func startHttpServer(address listenAddress, actionChannel chan []*action, responseChannel chan string) (error, int) {
+func startHttpServer(address listenAddress, actionChannel chan []*action, responseChannel chan string) (int, error) {
 	host := address.host
 	port := address.port
 	apiKey := os.Getenv("FZF_API_KEY")
 	if !address.IsLocal() && len(apiKey) == 0 {
-		return fmt.Errorf("FZF_API_KEY is required to allow remote access"), port
+		return 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 fmt.Errorf("failed to listen on %s", addrStr), port
+		return 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 fmt.Errorf("cannot extract port: %s", addr), port
+			return port, fmt.Errorf("cannot extract port: %s", addr)
 		}
 		var err error
 		port, err = strconv.Atoi(parts[len(parts)-1])
 		if err != nil {
-			return err, port
+			return port, err
 		}
 	}
 
@@ -119,7 +120,7 @@ func startHttpServer(address listenAddress, actionChannel chan []*action, respon
 		listener.Close()
 	}()
 
-	return nil, port
+	return port, nil
 }
 
 // Here we are writing a simplistic HTTP server without using net/http
@@ -170,7 +171,7 @@ func (server *httpServer) handleHttpRequest(conn net.Conn) string {
 				select {
 				case response := <-server.responseChannel:
 					return good(response)
-				case <-time.After(2 * time.Second):
+				case <-time.After(channelTimeout):
 					go func() {
 						// Drain the channel
 						<-server.responseChannel
@@ -227,7 +228,11 @@ func (server *httpServer) handleHttpRequest(conn net.Conn) string {
 		return bad("no action specified")
 	}
 
-	server.actionChannel <- actions
+	select {
+	case server.actionChannel <- actions:
+	case <-time.After(channelTimeout):
+		return httpUnavailable + crlf
+	}
 	return httpOk + crlf
 }
 
@@ -237,18 +242,16 @@ func parseGetParams(query string) getParams {
 		parts := strings.SplitN(pair, "=", 2)
 		if len(parts) == 2 {
 			switch parts[0] {
-			case "limit":
+			case "limit", "offset":
-				val, err := strconv.Atoi(parts[1])
+				if val, err := strconv.Atoi(parts[1]); err == nil {
-				if err == nil {
+					if parts[0] == "limit" {
 						params.limit = val
-				}
+					} else {
-			case "offset":
-				val, err := strconv.Atoi(parts[1])
-				if err == nil {
 						params.offset = val
 					}
 				}
 			}
 		}
+	}
 	return params
 }

src/terminal.go

@@ -7,7 +7,6 @@ import (
 	"io"
 	"math"
 	"os"
-	"os/exec"
 	"os/signal"
 	"regexp"
 	"sort"
@@ -55,6 +54,9 @@ var actionTypeRegex *regexp.Regexp
 
 const clearCode string = "\x1b[2J"
 
+// Number of maximum focus events to process synchronously
+const maxFocusEvents = 10000
+
 func init() {
 	placeholder = regexp.MustCompile(`\\?(?:{[+sf]*[0-9,-.]*}|{q}|{fzf:(?:query|action|prompt)}|{\+?f?nf?})`)
 	whiteSuffix = regexp.MustCompile(`\s*$`)
@@ -67,7 +69,7 @@ func init() {
 	// * https://sw.kovidgoyal.net/kitty/graphics-protocol
 	// * https://en.wikipedia.org/wiki/Sixel
 	// * https://iterm2.com/documentation-images.html
-	passThroughRegex = regexp.MustCompile(`\x1bPtmux;\x1b\x1b.*?[^\x1b]\x1b\\|\x1b(_G|P[0-9;]*q).*?\x1b\\\r?|\x1b]1337;.*?\a`)
+	passThroughRegex = regexp.MustCompile(`\x1bPtmux;\x1b\x1b.*?[^\x1b]\x1b\\|\x1b(_G|P[0-9;]*q).*?\x1b\\\r?|\x1b]1337;.*?(\a|\x1b\\)`)
 }
 
 type jumpMode int
@@ -178,7 +180,7 @@ type Status struct {
 type Terminal struct {
 	initDelay          time.Duration
 	infoStyle          infoStyle
-	infoSep            string
+	infoPrefix         string
 	separator          labelPrinter
 	separatorLen       int
 	spinner            []string
@@ -242,6 +244,7 @@ type Terminal struct {
 	listenUnsafe       bool
 	borderShape        tui.BorderShape
 	cleanExit          bool
+	executor           *util.Executor
 	paused             bool
 	border             tui.Window
 	window             tui.Window
@@ -290,6 +293,7 @@ type Terminal struct {
 	executing          *util.AtomicBool
 	termSize           tui.TermSize
 	lastAction         actionType
+	lastKey            string
 	lastFocus          int32
 	areaLines          int
 	areaColumns        int
@@ -363,6 +367,7 @@ const (
 	actCancel
 	actChangeBorderLabel
 	actChangeHeader
+	actChangeMulti
 	actChangePreviewLabel
 	actChangePrompt
 	actChangeQuery
@@ -391,8 +396,10 @@ const (
 	actToggleIn
 	actToggleOut
 	actToggleTrack
+	actToggleTrackCurrent
 	actToggleHeader
-	actTrack
+	actTrackCurrent
+	actUntrackCurrent
 	actDown
 	actUp
 	actPageUp
@@ -403,7 +410,7 @@ const (
 	actOffsetUp
 	actOffsetDown
 	actJump
-	actJumpAccept
+	actJumpAccept // XXX Deprecated in favor of jump:accept binding
 	actPrintQuery
 	actRefreshPreview
 	actReplaceQuery
@@ -455,14 +462,7 @@ const (
 )
 
 func (a actionType) Name() string {
-	name := ""
+	return util.ToKebabCase(a.String()[3:])
-	for i, r := range a.String()[3:] {
-		if i > 0 && r >= 'A' && r <= 'Z' {
-			name += "-"
-		}
-		name += string(r)
-	}
-	return strings.ToLower(name)
 }
 
 func processExecution(action actionType) bool {
@@ -499,6 +499,7 @@ type searchRequest struct {
 	sort    bool
 	sync    bool
 	command *string
+	environ []string
 	changed bool
 }
 
@@ -540,14 +541,14 @@ func defaultKeymap() map[tui.Event][]*action {
 	add(tui.CtrlC, actAbort)
 	add(tui.CtrlG, actAbort)
 	add(tui.CtrlQ, actAbort)
-	add(tui.ESC, actAbort)
+	add(tui.Esc, actAbort)
 	add(tui.CtrlD, actDeleteCharEof)
 	add(tui.CtrlE, actEndOfLine)
 	add(tui.CtrlF, actForwardChar)
 	add(tui.CtrlH, actBackwardDeleteChar)
-	add(tui.BSpace, actBackwardDeleteChar)
+	add(tui.Backspace, actBackwardDeleteChar)
 	add(tui.Tab, actToggleDown)
-	add(tui.BTab, actToggleUp)
+	add(tui.ShiftTab, actToggleUp)
 	add(tui.CtrlJ, actDown)
 	add(tui.CtrlK, actUp)
 	add(tui.CtrlL, actClearScreen)
@@ -562,11 +563,11 @@ func defaultKeymap() map[tui.Event][]*action {
 	}
 
 	addEvent(tui.AltKey('b'), actBackwardWord)
-	add(tui.SLeft, actBackwardWord)
+	add(tui.ShiftLeft, actBackwardWord)
 	addEvent(tui.AltKey('f'), actForwardWord)
-	add(tui.SRight, actForwardWord)
+	add(tui.ShiftRight, actForwardWord)
 	addEvent(tui.AltKey('d'), actKillWord)
-	add(tui.AltBS, actBackwardKillWord)
+	add(tui.AltBackspace, actBackwardKillWord)
 
 	add(tui.Up, actUp)
 	add(tui.Down, actDown)
@@ -575,12 +576,12 @@ func defaultKeymap() map[tui.Event][]*action {
 
 	add(tui.Home, actBeginningOfLine)
 	add(tui.End, actEndOfLine)
-	add(tui.Del, actDeleteChar)
+	add(tui.Delete, actDeleteChar)
-	add(tui.PgUp, actPageUp)
+	add(tui.PageUp, actPageUp)
-	add(tui.PgDn, actPageDown)
+	add(tui.PageDown, actPageDown)
 
-	add(tui.SUp, actPreviewUp)
+	add(tui.ShiftUp, actPreviewUp)
-	add(tui.SDown, actPreviewDown)
+	add(tui.ShiftDown, actPreviewDown)
 
 	add(tui.Mouse, actMouse)
 	add(tui.LeftClick, actClick)
@@ -639,7 +640,7 @@ func evaluateHeight(opts *Options, termHeight int) int {
 }
 
 // NewTerminal returns new Terminal object
-func NewTerminal(opts *Options, eventBox *util.EventBox) *Terminal {
+func NewTerminal(opts *Options, eventBox *util.EventBox, executor *util.Executor) *Terminal {
 	input := trimQuery(opts.Query)
 	var delay time.Duration
 	if opts.Tac {
@@ -671,7 +672,7 @@ func NewTerminal(opts *Options, eventBox *util.EventBox) *Terminal {
 			if previewBox != nil && opts.Preview.aboveOrBelow() {
 				effectiveMinHeight += 1 + borderLines(opts.Preview.border)
 			}
-			if opts.InfoStyle.noExtraLine() {
+			if noSeparatorLine(opts.InfoStyle, opts.Separator == nil || uniseg.StringWidth(*opts.Separator) > 0) {
 				effectiveMinHeight--
 			}
 			effectiveMinHeight += borderLines(opts.BorderShape)
@@ -693,7 +694,7 @@ func NewTerminal(opts *Options, eventBox *util.EventBox) *Terminal {
 	t := Terminal{
 		initDelay:          delay,
 		infoStyle:          opts.InfoStyle,
-		infoSep:            opts.InfoSep,
+		infoPrefix:         opts.InfoPrefix,
 		separator:          nil,
 		spinner:            makeSpinner(opts.Unicode),
 		promptString:       opts.Prompt,
@@ -735,6 +736,7 @@ func NewTerminal(opts *Options, eventBox *util.EventBox) *Terminal {
 		previewLabel:       nil,
 		previewLabelOpts:   opts.PreviewLabel,
 		cleanExit:          opts.ClearOnExit,
+		executor:           executor,
 		paused:             opts.Phony,
 		cycle:              opts.Cycle,
 		headerVisible:      true,
@@ -772,7 +774,7 @@ func NewTerminal(opts *Options, eventBox *util.EventBox) *Terminal {
 		theme:              opts.Theme,
 		startChan:          make(chan fitpad, 1),
 		killChan:           make(chan int),
-		serverInputChan:    make(chan []*action, 10),
+		serverInputChan:    make(chan []*action, 100),
 		serverOutputChan:   make(chan string),
 		eventChan:          make(chan tui.Event, 6), // (load + result + zero|one) | (focus) | (resize) | (GetChar)
 		tui:                renderer,
@@ -828,7 +830,7 @@ func NewTerminal(opts *Options, eventBox *util.EventBox) *Terminal {
 	_, t.hasLoadActions = t.keymap[tui.Load.AsEvent()]
 
 	if t.listenAddr != nil {
-		err, port := startHttpServer(*t.listenAddr, t.serverInputChan, t.serverOutputChan)
+		port, err := startHttpServer(*t.listenAddr, t.serverInputChan, t.serverOutputChan)
 		if err != nil {
 			errorExit(err.Error())
 		}
@@ -845,12 +847,16 @@ func (t *Terminal) environ() []string {
 	}
 	env = append(env, "FZF_QUERY="+string(t.input))
 	env = append(env, "FZF_ACTION="+t.lastAction.Name())
+	env = append(env, "FZF_KEY="+t.lastKey)
 	env = append(env, "FZF_PROMPT="+string(t.promptString))
+	env = append(env, "FZF_PREVIEW_LABEL="+t.previewLabelOpts.label)
+	env = append(env, "FZF_BORDER_LABEL="+t.borderLabelOpts.label)
 	env = append(env, fmt.Sprintf("FZF_TOTAL_COUNT=%d", t.count))
 	env = append(env, fmt.Sprintf("FZF_MATCH_COUNT=%d", t.merger.Length()))
 	env = append(env, fmt.Sprintf("FZF_SELECT_COUNT=%d", len(t.selected)))
 	env = append(env, fmt.Sprintf("FZF_LINES=%d", t.areaLines))
 	env = append(env, fmt.Sprintf("FZF_COLUMNS=%d", t.areaColumns))
+	env = append(env, fmt.Sprintf("FZF_POS=%d", util.Min(t.merger.Length(), t.cy+1)))
 	return env
 }
 
@@ -874,7 +880,7 @@ func (t *Terminal) visibleHeaderLines() int {
 // Extra number of lines needed to display fzf
 func (t *Terminal) extraLines() int {
 	extra := t.visibleHeaderLines() + 1
-	if !t.noInfoLine() {
+	if !t.noSeparatorLine() {
 		extra++
 	}
 	return extra
@@ -980,8 +986,18 @@ func (t *Terminal) parsePrompt(prompt string) (func(), int) {
 	return output, promptLen
 }
 
-func (t *Terminal) noInfoLine() bool {
+func noSeparatorLine(style infoStyle, separator bool) bool {
-	return t.infoStyle.noExtraLine()
+	switch style {
+	case infoInline:
+		return true
+	case infoHidden, infoInlineRight:
+		return !separator
+	}
+	return false
+}
+
+func (t *Terminal) noSeparatorLine() bool {
+	return noSeparatorLine(t.infoStyle, t.separatorLen > 0)
 }
 
 func getScrollbar(total int, height int, offset int) (int, int) {
@@ -1054,13 +1070,13 @@ func (t *Terminal) UpdateProgress(progress float32) {
 }
 
 // UpdateList updates Merger to display the list
-func (t *Terminal) UpdateList(merger *Merger) {
+func (t *Terminal) UpdateList(merger *Merger, triggerResultEvent bool) {
 	t.mutex.Lock()
-	var prevIndex int32 = -1
+	prevIndex := minItem.Index()
 	reset := t.revision != merger.Revision()
 	if !reset && t.track != trackDisabled {
 		if t.merger.Length() > 0 {
-			prevIndex = t.merger.Get(t.cy).item.Index()
+			prevIndex = t.currentIndex()
 		} else if merger.Length() > 0 {
 			prevIndex = merger.First().item.Index()
 		}
@@ -1105,7 +1121,7 @@ func (t *Terminal) UpdateList(merger *Merger) {
 				t.eventChan <- one
 			}
 		}
-		if t.hasResultActions {
+		if triggerResultEvent && t.hasResultActions {
 			t.eventChan <- tui.Result.AsEvent()
 		}
 	}
@@ -1233,7 +1249,7 @@ func (t *Terminal) adjustMarginAndPadding() (int, int, [4]int, [4]int) {
 
 	minAreaWidth := minWidth
 	minAreaHeight := minHeight
-	if t.noInfoLine() {
+	if t.noSeparatorLine() {
 		minAreaHeight -= 1
 	}
 	if t.needPreviewWindow() {
@@ -1514,7 +1530,7 @@ func (t *Terminal) move(y int, x int, clear bool) {
 		y = h - y - 1
 	case layoutReverseList:
 		n := 2 + t.visibleHeaderLines()
-		if t.noInfoLine() {
+		if t.noSeparatorLine() {
 			n--
 		}
 		if y < n {
@@ -1554,7 +1570,7 @@ func (t *Terminal) updatePromptOffset() ([]rune, []rune) {
 func (t *Terminal) promptLine() int {
 	if t.headerFirst {
 		max := t.window.Height() - 1
-		if !t.noInfoLine() {
+		if !t.noSeparatorLine() {
 			max--
 		}
 		return util.Min(t.visibleHeaderLines(), max)
@@ -1599,20 +1615,8 @@ func (t *Terminal) printInfo() {
 			t.window.Print(" ") // Clear spinner
 		}
 	}
-	switch t.infoStyle {
+	printInfoPrefix := func() {
-	case infoDefault:
+		str := t.infoPrefix
-		t.move(line+1, 0, t.separatorLen == 0)
-		printSpinner()
-		t.move(line+1, 2, false)
-		pos = 2
-	case infoRight:
-		t.move(line+1, 0, false)
-	case infoInlineRight:
-		pos = t.promptLen + t.queryLen[0] + t.queryLen[1] + 1
-		t.move(line, pos, true)
-	case infoInline:
-		pos = t.promptLen + t.queryLen[0] + t.queryLen[1] + 1
-		str := t.infoSep
 		maxWidth := t.window.Width() - pos
 		width := util.StringWidth(str)
 		if width > maxWidth {
@@ -1627,7 +1631,34 @@ func (t *Terminal) printInfo() {
 			t.window.CPrint(tui.ColPrompt, str)
 		}
 		pos += width
+	}
+	printSeparator := func(fillLength int, pad bool) {
+		// --------_
+		if t.separatorLen > 0 {
+			t.separator(t.window, fillLength)
+			t.window.Print(" ")
+		} else if pad {
+			t.window.Print(strings.Repeat(" ", fillLength+1))
+		}
+	}
+	switch t.infoStyle {
+	case infoDefault:
+		t.move(line+1, 0, t.separatorLen == 0)
+		printSpinner()
+		t.move(line+1, 2, false)
+		pos = 2
+	case infoRight:
+		t.move(line+1, 0, false)
+	case infoInlineRight:
+		pos = t.promptLen + t.queryLen[0] + t.queryLen[1] + 1
+	case infoInline:
+		pos = t.promptLen + t.queryLen[0] + t.queryLen[1] + 1
+		printInfoPrefix()
 	case infoHidden:
+		if t.separatorLen > 0 {
+			t.move(line+1, 0, false)
+			printSeparator(t.window.Width()-1, false)
+		}
 		return
 	}
 
@@ -1641,8 +1672,11 @@ func (t *Terminal) printInfo() {
 			output += " -S"
 		}
 	}
-	if t.track != trackDisabled {
+	switch t.track {
+	case trackEnabled:
 		output += " +T"
+	case trackCurrent:
+		output += " +t"
 	}
 	if t.multi > 0 {
 		if t.multi == maxMulti {
@@ -1658,15 +1692,6 @@ func (t *Terminal) printInfo() {
 		output = fmt.Sprintf("[Command failed: %s]", *t.failed)
 	}
 
-	printSeparator := func(fillLength int, pad bool) {
-		// --------_
-		if t.separatorLen > 0 {
-			t.separator(t.window, fillLength)
-			t.window.Print(" ")
-		} else if pad {
-			t.window.Print(strings.Repeat(" ", fillLength+1))
-		}
-	}
 	if t.infoStyle == infoRight {
 		maxWidth := t.window.Width()
 		if t.reading {
@@ -1689,19 +1714,35 @@ func (t *Terminal) printInfo() {
 	}
 
 	if t.infoStyle == infoInlineRight {
+		if len(t.infoPrefix) == 0 {
 			pos = util.Max(pos, t.window.Width()-util.StringWidth(output)-3)
-		if pos >= t.window.Width() {
+			if pos < t.window.Width() {
-			return
-		}
 				t.move(line, pos, false)
 				printSpinner()
+				pos++
+			}
+			if pos < t.window.Width()-1 {
 				t.window.Print(" ")
-		pos += 2
+				pos++
+			}
+		} else {
+			pos = util.Max(pos, t.window.Width()-util.StringWidth(output)-util.StringWidth(t.infoPrefix)-1)
+			printInfoPrefix()
+		}
 	}
 
 	maxWidth := t.window.Width() - pos
 	output = t.trimMessage(output, maxWidth)
 	t.window.CPrint(tui.ColInfo, output)
+
+	if t.infoStyle == infoInlineRight {
+		if t.separatorLen > 0 {
+			t.move(line+1, 0, false)
+			printSeparator(t.window.Width()-1, false)
+		}
+		return
+	}
+
 	fillLength := maxWidth - len(output) - 2
 	if fillLength > 0 {
 		t.window.CPrint(tui.ColSeparator, " ")
@@ -1716,7 +1757,7 @@ func (t *Terminal) printHeader() {
 	max := t.window.Height()
 	if t.headerFirst {
 		max--
-		if !t.noInfoLine() {
+		if !t.noSeparatorLine() {
 			max--
 		}
 	}
@@ -1733,7 +1774,7 @@ func (t *Terminal) printHeader() {
 		}
 		if !t.headerFirst {
 			line++
-			if !t.noInfoLine() {
+			if !t.noSeparatorLine() {
 				line++
 			}
 		}
@@ -1765,7 +1806,7 @@ func (t *Terminal) printList() {
 			i = maxy - 1 - j
 		}
 		line := i + 2 + t.visibleHeaderLines()
-		if t.noInfoLine() {
+		if t.noSeparatorLine() {
 			line--
 		}
 		if i < count {
@@ -2483,6 +2524,7 @@ type replacePlaceholderParams struct {
 	allItems   []*Item
 	lastAction actionType
 	prompt     string
+	executor   *util.Executor
 }
 
 func (t *Terminal) replacePlaceholder(template string, forcePlus bool, input string, list []*Item) string {
@@ -2496,6 +2538,7 @@ func (t *Terminal) replacePlaceholder(template string, forcePlus bool, input str
 		allItems:   list,
 		lastAction: t.lastAction,
 		prompt:     t.promptString,
+		executor:   t.executor,
 	})
 }
 
@@ -2556,7 +2599,7 @@ func replacePlaceholder(params replacePlaceholderParams) string {
 		case escaped:
 			return match
 		case match == "{q}" || match == "{fzf:query}":
-			return quoteEntry(params.query)
+			return params.executor.QuoteEntry(params.query)
 		case match == "{}":
 			replace = func(item *Item) string {
 				switch {
@@ -2569,13 +2612,13 @@ func replacePlaceholder(params replacePlaceholderParams) string {
 				case flags.file:
 					return item.AsString(params.stripAnsi)
 				default:
-					return quoteEntry(item.AsString(params.stripAnsi))
+					return params.executor.QuoteEntry(item.AsString(params.stripAnsi))
 				}
 			}
 		case match == "{fzf:action}":
 			return params.lastAction.Name()
 		case match == "{fzf:prompt}":
-			return quoteEntry(params.prompt)
+			return params.executor.QuoteEntry(params.prompt)
 		default:
 			// token type and also failover (below)
 			rangeExpressions := strings.Split(match[1:len(match)-1], ",")
@@ -2609,7 +2652,7 @@ func replacePlaceholder(params replacePlaceholderParams) string {
 					str = strings.TrimSpace(str)
 				}
 				if !flags.file {
-					str = quoteEntry(str)
+					str = params.executor.QuoteEntry(str)
 				}
 				return str
 			}
@@ -2649,7 +2692,7 @@ func (t *Terminal) executeCommand(template string, forcePlus bool, background bo
 		return line
 	}
 	command := t.replacePlaceholder(template, forcePlus, string(t.input), list)
-	cmd := util.ExecCommand(command, false)
+	cmd := t.executor.ExecCommand(command, false)
 	cmd.Env = t.environ()
 	t.executing.Set(true)
 	if !background {
@@ -2926,7 +2969,7 @@ func (t *Terminal) Loop() {
 				if items[0] != nil {
 					_, query := t.Input()
 					command := t.replacePlaceholder(commandTemplate, false, string(query), items)
-					cmd := util.ExecCommand(command, true)
+					cmd := t.executor.ExecCommand(command, true)
 					env := t.environ()
 					if pwindowSize.Lines > 0 {
 						lines := fmt.Sprintf("LINES=%d", pwindowSize.Lines)
@@ -3091,7 +3134,7 @@ func (t *Terminal) Loop() {
 					switch req {
 					case reqPrompt:
 						t.printPrompt()
-						if t.noInfoLine() {
+						if t.infoStyle == infoInline || t.infoStyle == infoInlineRight {
 							t.printInfo()
 						}
 					case reqInfo:
@@ -3160,7 +3203,7 @@ func (t *Terminal) Loop() {
 						}
 						t.previewer.lines = result.lines
 						t.previewer.spinner = result.spinner
-						if t.previewer.following.Enabled() {
+						if t.hasPreviewWindow() && t.previewer.following.Enabled() {
 							t.previewer.offset = util.Max(t.previewer.offset, len(t.previewer.lines)-(t.pwindow.Height()-t.previewOpts.headerLines))
 						} else if result.offset >= 0 {
 							t.previewer.offset = util.Constrain(result.offset, t.previewOpts.headerLines, len(t.previewer.lines)-1)
@@ -3247,6 +3290,7 @@ func (t *Terminal) Loop() {
 		t.mutex.Lock()
 		previousInput := t.input
 		previousCx := t.cx
+		t.lastKey = event.KeyName()
 		events := []util.EventType{}
 		req := func(evts ...util.EventType) {
 			for _, event := range evts {
@@ -3304,6 +3348,7 @@ func (t *Terminal) Loop() {
 		var doAction func(*action) bool
 		var doActions func(actions []*action) bool
 		doActions = func(actions []*action) bool {
+			for iter := 0; iter <= maxFocusEvents; iter++ {
 				currentIndex := t.currentIndex()
 				for _, action := range actions {
 					if !doAction(action) {
@@ -3311,12 +3356,15 @@ func (t *Terminal) Loop() {
 					}
 				}
 
-			if onFocus, prs := t.keymap[tui.Focus.AsEvent()]; prs {
+				if onFocus, prs := t.keymap[tui.Focus.AsEvent()]; prs && iter < maxFocusEvents {
 					if newIndex := t.currentIndex(); newIndex != currentIndex {
 						t.lastFocus = newIndex
-					return doActions(onFocus)
+						actions = onFocus
+						continue
 					}
 				}
+				break
+			}
 			return true
 		}
 		doAction = func(a *action) bool {
@@ -3328,27 +3376,21 @@ func (t *Terminal) Loop() {
 				valid, list := t.buildPlusList(a.a, false)
 				if valid {
 					command := t.replacePlaceholder(a.a, false, string(t.input), list)
-					shell := os.Getenv("SHELL")
-					if len(shell) == 0 {
-						shell = "sh"
-					}
-					shellPath, err := exec.LookPath(shell)
-					if err == nil {
 					t.tui.Close()
 					if t.history != nil {
 						t.history.append(string(t.input))
 					}
+
 					/*
 					 FIXME: It is not at all clear why this is required.
 					 The following command will report 'not a tty', unless we open
 					 /dev/tty *twice* after closing the standard input for 'reload'
 					 in Reader.terminate().
-								: | fzf --bind 'start:reload:ls' --bind 'enter:become:tty'
+
+					   while : | fzf --bind 'start:reload:ls' --bind 'load:become:tty'; do echo; done
 					*/
 					tui.TtyIn()
-						util.SetStdin(tui.TtyIn())
+					t.executor.Become(tui.TtyIn(), t.environ(), command)
-						syscall.Exec(shellPath, []string{shell, "-c", command}, os.Environ())
-					}
 				}
 			case actExecute, actExecuteSilent:
 				t.executeCommand(a.a, false, a.t == actExecuteSilent, false, false)
@@ -3381,6 +3423,9 @@ func (t *Terminal) Loop() {
 						// Discard the preview content so that it won't accidentally appear
 						// when preview window is re-enabled and previewDelay is triggered
 						t.previewer.lines = nil
+
+						// Also kill the preview process if it's still running
+						t.cancelPreview()
 					}
 				}
 			case actTogglePreviewWrap:
@@ -3443,6 +3488,19 @@ func (t *Terminal) Loop() {
 				}
 			case actPrintQuery:
 				req(reqPrintQuery)
+			case actChangeMulti:
+				multi := t.multi
+				if a.a == "" {
+					multi = maxMulti
+				} else if n, e := strconv.Atoi(a.a); e == nil && n >= 0 {
+					multi = n
+				}
+				if t.multi > 0 && multi != t.multi {
+					t.selected = make(map[int32]selectedItem)
+					t.version++
+				}
+				t.multi = multi
+				req(reqList, reqInfo)
 			case actChangeQuery:
 				t.input = []rune(a.a)
 				t.cx = len(t.input)
@@ -3460,11 +3518,13 @@ func (t *Terminal) Loop() {
 					req(reqHeader)
 				}
 			case actChangeBorderLabel:
+				t.borderLabelOpts.label = a.a
 				if t.border != nil {
 					t.borderLabel, t.borderLabelLen = t.ansiLabelPrinter(a.a, &tui.ColBorderLabel, false)
 					req(reqRedrawBorderLabel)
 				}
 			case actChangePreviewLabel:
+				t.previewLabelOpts.label = a.a
 				if t.pborder != nil {
 					t.previewLabel, t.previewLabelLen = t.ansiLabelPrinter(a.a, &tui.ColPreviewLabel, false)
 					req(reqRedrawPreviewLabel)
@@ -3474,14 +3534,16 @@ func (t *Terminal) Loop() {
 				actions := parseSingleActionList(strings.Trim(body, "\r\n"), func(message string) {})
 				return doActions(actions)
 			case actTransformBorderLabel:
-				if t.border != nil {
 				label := t.executeCommand(a.a, false, true, true, true)
+				t.borderLabelOpts.label = label
+				if t.border != nil {
 					t.borderLabel, t.borderLabelLen = t.ansiLabelPrinter(label, &tui.ColBorderLabel, false)
 					req(reqRedrawBorderLabel)
 				}
 			case actTransformPreviewLabel:
-				if t.pborder != nil {
 				label := t.executeCommand(a.a, false, true, true, true)
+				t.previewLabelOpts.label = label
+				if t.pborder != nil {
 					t.previewLabel, t.previewLabelLen = t.ansiLabelPrinter(label, &tui.ColPreviewLabel, false)
 					req(reqRedrawPreviewLabel)
 				}
@@ -3767,6 +3829,14 @@ func (t *Terminal) Loop() {
 					t.track = trackEnabled
 				}
 				req(reqInfo)
+			case actToggleTrackCurrent:
+				switch t.track {
+				case trackCurrent:
+					t.track = trackDisabled
+				case trackDisabled:
+					t.track = trackCurrent
+				}
+				req(reqInfo)
 			case actShowHeader:
 				t.headerVisible = true
 				req(reqList, reqInfo, reqPrompt, reqHeader)
@@ -3776,11 +3846,16 @@ func (t *Terminal) Loop() {
 			case actToggleHeader:
 				t.headerVisible = !t.headerVisible
 				req(reqList, reqInfo, reqPrompt, reqHeader)
-			case actTrack:
+			case actTrackCurrent:
 				if t.track == trackDisabled {
 					t.track = trackCurrent
 				}
 				req(reqInfo)
+			case actUntrackCurrent:
+				if t.track == trackCurrent {
+					t.track = trackDisabled
+				}
+				req(reqInfo)
 			case actEnableSearch:
 				t.paused = false
 				changed = true
@@ -3869,7 +3944,7 @@ func (t *Terminal) Loop() {
 				mx -= t.window.Left()
 				my -= t.window.Top()
 				min := 2 + t.visibleHeaderLines()
-				if t.noInfoLine() {
+				if t.noSeparatorLine() {
 					min--
 				}
 				h := t.window.Height()
@@ -3987,11 +4062,18 @@ func (t *Terminal) Loop() {
 
 				// Full redraw
 				if !currentPreviewOpts.sameLayout(t.previewOpts) {
-					wasHidden := t.pwindow == nil
+					// Preview command can be running in the background if the size of
+					// the preview window is 0 but not 'hidden'
+					wasHidden := currentPreviewOpts.hidden
 					updatePreviewWindow(false)
 					if wasHidden && t.hasPreviewWindow() {
+						// Restart
 						refreshPreview(t.previewOpts.command)
+					} else if t.previewOpts.hidden {
+						// Cancel
+						t.cancelPreview()
 					} else {
+						// Refresh
 						req(reqPreviewRefresh)
 					}
 				} else if !currentPreviewOpts.sameContentLayout(t.previewOpts) {
@@ -4034,6 +4116,9 @@ func (t *Terminal) Loop() {
 			// Break out of jump mode if any action is submitted to the server
 			if t.jumping != jumpDisabled {
 				t.jumping = jumpDisabled
+				if acts, prs := t.keymap[tui.JumpCancel.AsEvent()]; prs && !doActions(acts) {
+					continue
+				}
 				req(reqList)
 			}
 			if len(actions) == 0 {
@@ -4047,19 +4132,17 @@ func (t *Terminal) Loop() {
 			t.truncateQuery()
 			queryChanged = string(previousInput) != string(t.input)
 			changed = changed || queryChanged
-			if onChanges, prs := t.keymap[tui.Change.AsEvent()]; queryChanged && prs {
+			if onChanges, prs := t.keymap[tui.Change.AsEvent()]; queryChanged && prs && !doActions(onChanges) {
-				if !doActions(onChanges) {
 				continue
 			}
-			}
+			if onEOFs, prs := t.keymap[tui.BackwardEOF.AsEvent()]; beof && prs && !doActions(onEOFs) {
-			if onEOFs, prs := t.keymap[tui.BackwardEOF.AsEvent()]; beof && prs {
-				if !doActions(onEOFs) {
 				continue
 			}
-			}
 		} else {
+			jumpEvent := tui.JumpCancel
 			if event.Type == tui.Rune {
 				if idx := strings.IndexRune(t.jumpLabels, event.Char); idx >= 0 && idx < t.maxItems() && idx < t.merger.Length() {
+					jumpEvent = tui.Jump
 					t.cy = idx + t.offset
 					if t.jumping == jumpAcceptEnabled {
 						req(reqClose)
@@ -4067,6 +4150,9 @@ func (t *Terminal) Loop() {
 				}
 			}
 			t.jumping = jumpDisabled
+			if acts, prs := t.keymap[jumpEvent.AsEvent()]; prs && !doActions(acts) {
+				continue
+			}
 			req(reqList)
 		}
 
@@ -4081,10 +4167,15 @@ func (t *Terminal) Loop() {
 			req(reqPrompt)
 		}
 
+		reload := changed || newCommand != nil
+		var reloadRequest *searchRequest
+		if reload {
+			reloadRequest = &searchRequest{sort: t.sort, sync: reloadSync, command: newCommand, environ: t.environ(), changed: changed}
+		}
 		t.mutex.Unlock() // Must be unlocked before touching reqBox
 
-		if changed || newCommand != nil {
+		if reload {
-			t.eventBox.Set(EvtSearchNew, searchRequest{sort: t.sort, sync: reloadSync, command: newCommand, changed: changed})
+			t.eventBox.Set(EvtSearchNew, *reloadRequest)
 		}
 		for _, event := range events {
 			t.reqBox.Set(event, nil)
@@ -4098,7 +4189,7 @@ func (t *Terminal) constrain() {
 	// count of lines can be displayed
 	height := t.maxItems()
 
-	t.cy = util.Constrain(t.cy, 0, count-1)
+	t.cy = util.Constrain(t.cy, 0, util.Max(0, count-1))
 
 	minOffset := util.Max(t.cy-height+1, 0)
 	maxOffset := util.Max(util.Min(count-height, t.cy), 0)
@@ -4149,7 +4240,7 @@ func (t *Terminal) vset(o int) bool {
 
 func (t *Terminal) maxItems() int {
 	max := t.window.Height() - 2 - t.visibleHeaderLines()
-	if t.noInfoLine() {
+	if t.noSeparatorLine() {
 		max++
 	}
 	return util.Max(max, 0)

src/terminal_test.go

@@ -23,6 +23,7 @@ func replacePlaceholderTest(template string, stripAnsi bool, delimiter Delimiter
 		allItems:   allItems,
 		lastAction: actBackwardDeleteCharEof,
 		prompt:     "prompt",
+		executor:   util.NewExecutor(""),
 	})
 }
 
@@ -244,6 +245,7 @@ func TestQuoteEntry(t *testing.T) {
 	unixStyle := quotes{``, `'`, `'\''`, `"`, `\`}
 	windowsStyle := quotes{`^`, `^"`, `'`, `\^"`, `\\`}
 	var effectiveStyle quotes
+	exec := util.NewExecutor("")
 
 	if util.IsWindows() {
 		effectiveStyle = windowsStyle
@@ -278,7 +280,7 @@ 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)
@@ -317,9 +319,9 @@ 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()
-	}
+
 	tests := []testCase{
 		// reference: give{template, query, items}, want{output OR match}
 

src/terminal_unix.go

@@ -5,26 +5,11 @@ package fzf
 import (
 	"os"
 	"os/signal"
-	"strings"
 	"syscall"
 
 	"golang.org/x/sys/unix"
 )
 
-var escaper *strings.Replacer
-
-func init() {
-	tokens := strings.Split(os.Getenv("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("'", "'\\''")
-	}
-}
-
 func notifyOnResize(resizeChan chan<- os.Signal) {
 	signal.Notify(resizeChan, syscall.SIGWINCH)
 }
@@ -41,7 +26,3 @@ func notifyStop(p *os.Process) {
 func notifyOnCont(resizeChan chan<- os.Signal) {
 	signal.Notify(resizeChan, syscall.SIGCONT)
 }
-
-func quoteEntry(entry string) string {
-	return "'" + escaper.Replace(entry) + "'"
-}

src/terminal_windows.go

@@ -4,8 +4,6 @@ package fzf
 
 import (
 	"os"
-	"regexp"
-	"strings"
 )
 
 func notifyOnResize(resizeChan chan<- os.Signal) {
@@ -19,27 +17,3 @@ func notifyStop(p *os.Process) {
 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/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(sbytes(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(sbytes(joinTokens(tokens)))
 				parts = append(parts, &chars)
 			} else {
 				if idx < 0 {

src/tui/eventtype_string.go

@@ -0,0 +1,120 @@
+// 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[Mouse-75]
+	_ = x[DoubleClick-76]
+	_ = x[LeftClick-77]
+	_ = x[RightClick-78]
+	_ = x[SLeftClick-79]
+	_ = x[SRightClick-80]
+	_ = x[ScrollUp-81]
+	_ = x[ScrollDown-82]
+	_ = x[SScrollUp-83]
+	_ = x[SScrollDown-84]
+	_ = x[PreviewScrollUp-85]
+	_ = x[PreviewScrollDown-86]
+	_ = x[Resize-87]
+	_ = x[Change-88]
+	_ = x[BackwardEOF-89]
+	_ = x[Start-90]
+	_ = x[Load-91]
+	_ = x[Focus-92]
+	_ = x[One-93]
+	_ = x[Zero-94]
+	_ = x[Result-95]
+	_ = x[Jump-96]
+	_ = x[JumpCancel-97]
+}
+
+const _EventType_name = "RuneCtrlACtrlBCtrlCCtrlDCtrlECtrlFCtrlGCtrlHTabCtrlJCtrlKCtrlLCtrlMCtrlNCtrlOCtrlPCtrlQCtrlRCtrlSCtrlTCtrlUCtrlVCtrlWCtrlXCtrlYCtrlZEscCtrlSpaceCtrlDeleteCtrlBackSlashCtrlRightBracketCtrlCaretCtrlSlashShiftTabBackspaceDeletePageUpPageDownUpDownLeftRightHomeEndInsertShiftUpShiftDownShiftLeftShiftRightShiftDeleteF1F2F3F4F5F6F7F8F9F10F11F12AltBackspaceAltUpAltDownAltLeftAltRightAltShiftUpAltShiftDownAltShiftLeftAltShiftRightAltCtrlAltInvalidMouseDoubleClickLeftClickRightClickSLeftClickSRightClickScrollUpScrollDownSScrollUpSScrollDownPreviewScrollUpPreviewScrollDownResizeChangeBackwardEOFStartLoadFocusOneZeroResultJumpJumpCancel"
+
+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, 458, 467, 477, 487, 498, 506, 516, 525, 536, 551, 568, 574, 580, 591, 596, 600, 605, 608, 612, 618, 622, 632}
+
+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

@@ -71,7 +71,7 @@ func (r *LightRenderer) csi(code string) string {
 
 func (r *LightRenderer) flush() {
 	if r.queued.Len() > 0 {
-		fmt.Fprint(os.Stderr, "\x1b[?25l"+r.queued.String()+"\x1b[?25h")
+		fmt.Fprint(os.Stderr, "\x1b[?7l\x1b[?25l"+r.queued.String()+"\x1b[?25h\x1b[?7h")
 		r.queued.Reset()
 	}
 }
@@ -245,7 +245,7 @@ func (r *LightRenderer) getBytesInternal(buffer []byte, nonblock bool) []byte {
 	}
 
 	retries := 0
-	if c == ESC.Int() || nonblock {
+	if c == Esc.Int() || nonblock {
 		retries = r.escDelay / escPollInterval
 	}
 	buffer = append(buffer, byte(c))
@@ -260,7 +260,7 @@ 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
@@ -300,7 +300,7 @@ 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:
@@ -311,7 +311,7 @@ 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 {
@@ -327,7 +327,7 @@ 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}
@@ -335,7 +335,7 @@ 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)
@@ -349,15 +349,15 @@ 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}
@@ -386,7 +386,7 @@ 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':
@@ -434,7 +434,7 @@ func (r *LightRenderer) escSequence(sz *int) Event {
 				return Event{Invalid, 0, nil} // INS
 			case '3':
 				if r.buffer[3] == '~' {
-					return Event{Del, 0, nil}
+					return Event{Delete, 0, nil}
 				}
 				if len(r.buffer) == 6 && r.buffer[5] == '~' {
 					*sz = 6
@@ -442,16 +442,16 @@ func (r *LightRenderer) escSequence(sz *int) Event {
 					case '5':
 						return Event{CtrlDelete, 0, nil}
 					case '2':
-						return Event{SDelete, 0, nil}
+						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':
@@ -489,16 +489,29 @@ 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':
@@ -506,33 +519,33 @@ 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]
@@ -808,13 +821,25 @@ func (w *LightWindow) drawBorderHorizontal(top, bottom bool) {
 		color = ColPreviewBorder
 	}
 	hw := runeWidth(w.border.top)
-	if top {
+	pad := repeat(' ', w.width/hw)
+
 	w.Move(0, 0)
+	if top {
 		w.CPrint(color, repeat(w.border.top, w.width/hw))
+	} else {
+		w.CPrint(color, pad)
 	}
-	if bottom {
+
+	for y := 1; y < w.height-1; y++ {
+		w.Move(y, 0)
+		w.CPrint(color, pad)
+	}
+
 	w.Move(w.height-1, 0)
+	if bottom {
 		w.CPrint(color, repeat(w.border.bottom, w.width/hw))
+	} else {
+		w.CPrint(color, pad)
 	}
 }
 

src/tui/light_unix.go

@@ -58,7 +58,7 @@ func openTtyIn() *os.File {
 			}
 		}
 		fmt.Fprintln(os.Stderr, "Failed to open "+consoleDevice)
-		os.Exit(2)
+		util.Exit(2)
 	}
 	return in
 }

src/tui/tcell.go

@@ -320,16 +320,16 @@ 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:
@@ -382,17 +382,17 @@ 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}
@@ -400,10 +400,10 @@ 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}
@@ -411,10 +411,10 @@ 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}
@@ -422,10 +422,10 @@ 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}
@@ -442,17 +442,17 @@ func (r *FullscreenRenderer) GetChar() Event {
 				return Event{CtrlDelete, 0, nil}
 			}
 			if shift {
-				return Event{SDelete, 0, nil}
+				return Event{ShiftDelete, 0, nil}
 			}
-			return Event{Del, 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:
@@ -498,7 +498,7 @@ func (r *FullscreenRenderer) GetChar() Event {
 
 		// section 7: Esc
 		case tcell.KeyEsc:
-			return Event{ESC, 0, nil}
+			return Event{Esc, 0, nil}
 		}
 	}
 
@@ -544,7 +544,7 @@ func (r *FullscreenRenderer) NewWindow(top int, left int, width int, height int,
 		height:      height,
 		normal:      normal,
 		borderStyle: borderStyle}
-	w.drawBorder(false)
+	w.Erase()
 	return w
 }
 
@@ -561,8 +561,8 @@ func fill(x, y, w, h int, n ColorPair, r rune) {
 }
 
 func (w *TcellWindow) Erase() {
-	w.drawBorder(false)
 	fill(w.left-1, w.top, w.width+1, w.height-1, w.normal, ' ')
+	w.drawBorder(false)
 }
 
 func (w *TcellWindow) EraseMaybe() bool {

src/tui/tcell_test.go

@@ -102,22 +102,22 @@ 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 +126,8 @@ 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 +161,11 @@ 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
@@ -259,7 +259,7 @@ Quick reference
 37					LeftClick
 38					RightClick
 39					BTab
-40					BSpace
+40					Backspace
 41					Del
 42					PgUp
 43					PgDn
@@ -272,7 +272,7 @@ Quick reference
 50					Insert
 51					SUp
 52					SDown
-53					SLeft
+53					ShiftLeft
 54					SRight
 55					F1
 56					F2
@@ -288,15 +288,15 @@ 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/tui.go

@@ -6,10 +6,13 @@ import (
 	"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 (
@@ -41,7 +44,7 @@ const (
 	CtrlX
 	CtrlY
 	CtrlZ
-	ESC
+	Esc
 	CtrlSpace
 	CtrlDelete
 
@@ -51,27 +54,12 @@ const (
 	CtrlCaret
 	CtrlSlash
 
-	Invalid
+	ShiftTab
-	Resize
+	Backspace
-	Mouse
-	DoubleClick
-	LeftClick
-	RightClick
-	SLeftClick
-	SRightClick
-	ScrollUp
-	ScrollDown
-	SScrollUp
-	SScrollDown
-	PreviewScrollUp
-	PreviewScrollDown
 
-	BTab
+	Delete
-	BSpace
+	PageUp
-
+	PageDown
-	Del
-	PgUp
-	PgDn
 
 	Up
 	Down
@@ -81,11 +69,11 @@ const (
 	End
 	Insert
 
-	SUp
+	ShiftUp
-	SDown
+	ShiftDown
-	SLeft
+	ShiftLeft
-	SRight
+	ShiftRight
-	SDelete
+	ShiftDelete
 
 	F1
 	F2
@@ -100,6 +88,38 @@ const (
 	F11
 	F12
 
+	AltBackspace
+
+	AltUp
+	AltDown
+	AltLeft
+	AltRight
+
+	AltShiftUp
+	AltShiftDown
+	AltShiftLeft
+	AltShiftRight
+
+	Alt
+	CtrlAlt
+
+	Invalid
+
+	Mouse
+	DoubleClick
+	LeftClick
+	RightClick
+	SLeftClick
+	SRightClick
+	ScrollUp
+	ScrollDown
+	SScrollUp
+	SScrollDown
+	PreviewScrollUp
+	PreviewScrollDown
+
+	// Events
+	Resize
 	Change
 	BackwardEOF
 	Start
@@ -108,21 +128,8 @@ const (
 	One
 	Zero
 	Result
-
+	Jump
-	AltBS
+	JumpCancel
-
-	AltUp
-	AltDown
-	AltLeft
-	AltRight
-
-	AltSUp
-	AltSDown
-	AltSLeft
-	AltSRight
-
-	Alt
-	CtrlAlt
 )
 
 func (t EventType) AsEvent() Event {
@@ -142,6 +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}
 }
@@ -646,7 +678,7 @@ func NoColorTheme() *ColorTheme {
 
 func errorExit(message string) {
 	fmt.Fprintln(os.Stderr, message)
-	os.Exit(2)
+	util.Exit(2)
 }
 
 func init() {

src/util/atexit.go

@@ -0,0 +1,38 @@
+package util
+
+import (
+	"os"
+	"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]()
+	}
+}
+
+// Exit executes any functions registered with AtExit() then exits the program
+// with os.Exit(code).
+//
+// NOTE: It must be used instead of os.Exit() since calling os.Exit() terminates
+// the program before any of the AtExit functions can run.
+func Exit(code int) {
+	defer os.Exit(code)
+	RunAtExitFuncs()
+}

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

@@ -163,7 +163,7 @@ 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 +178,12 @@ 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)
 	}
 }

src/util/util.go

@@ -176,3 +176,15 @@ func RepeatToFill(str string, length int, limit int) string {
 	}
 	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)
+}

src/util/util_unix.go

@@ -3,31 +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
+	args    []string
+	escaper *strings.Replacer
+}
+
+func NewExecutor(withShell string) *Executor {
 	shell := os.Getenv("SHELL")
+	args := strings.Fields(withShell)
+	if len(args) > 0 {
+		shell = args[0]
+		args = args[1:]
+	} else {
 		if len(shell) == 0 {
 			shell = "sh"
 		}
-	return ExecCommandWith(shell, command, setpgid)
+		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}
 }
 
-// ExecCommandWith executes the given command with the specified shell
+// ExecCommand executes the given command with $SHELL
-func ExecCommandWith(shell string, command string, setpgid bool) *exec.Cmd {
+func (x *Executor) ExecCommand(command string, setpgid bool) *exec.Cmd {
-	cmd := exec.Command(shell, "-c", command)
+	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())
+		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)

src/util/util_windows.go

@@ -6,62 +6,161 @@ import (
 	"fmt"
 	"os"
 	"os/exec"
+	"path/filepath"
 	"strings"
 	"sync/atomic"
 	"syscall"
 )
 
-var shellPath atomic.Value
+type shellType int
+
+const (
+	shellTypeUnknown shellType = iota
+	shellTypeCmd
+	shellTypePowerShell
+)
+
+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{"/v:on/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{
 			HideWindow:    false,
 			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())
+		Exit(127)
+	}
+	err = cmd.Wait()
+	if err != nil {
+		if exitError, ok := err.(*exec.ExitError); ok {
+			Exit(exitError.ExitCode())
+		}
+	}
+	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 '&', '|', '<', '>', '(', ')', '@', '^', '%', '!':
+			b = append(b, '^')
+		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 string(b)
+}
+
+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.Replace(entry, `"`, `\"`, -1)
+		return "'" + strings.Replace(escaped, "'", "''", -1) + "'"
+	default:
+		return "'" + strings.Replace(entry, "'", "'\\''", -1) + "'"
+	}
+}
+
 // KillCommand kills the process for the given command
 func KillCommand(cmd *exec.Cmd) error {
 	return cmd.Process.Kill()

test/test_go.rb

@@ -18,7 +18,6 @@ UNSETS = %w[
   FZF_ALT_C_COMMAND
   FZF_ALT_C_OPTS FZF_CTRL_R_OPTS
   FZF_API_KEY
-  fish_history
 ].freeze
 DEFAULT_TIMEOUT = 10
 
@@ -67,7 +66,7 @@ class Shell
     end
 
     def fish
-      UNSETS.map { |v| v + '= ' }.join + ' FZF_DEFAULT_OPTS=--no-scrollbar fish'
+      "unset #{UNSETS.join(' ')}; FZF_DEFAULT_OPTS=--no-scrollbar fish_history= fish"
     end
   end
 end
@@ -426,6 +425,25 @@ class TestGoFZF < TestBase
     end
   end
 
+  def test_multi_action
+    tmux.send_keys "seq 10 | #{FZF} --bind 'a:change-multi,b:change-multi(3),c:change-multi(xxx),d:change-multi(0)'", :Enter
+    tmux.until { |lines| assert_equal 10, lines.item_count }
+    tmux.until { |lines| assert lines[-2]&.start_with?('  10/10 ') }
+    tmux.send_keys 'a'
+    tmux.until { |lines| assert lines[-2]&.start_with?('  10/10 (0)') }
+    tmux.send_keys 'b'
+    tmux.until { |lines| assert lines[-2]&.start_with?('  10/10 (0/3)') }
+    tmux.send_keys :BTab
+    tmux.until { |lines| assert lines[-2]&.start_with?('  10/10 (1/3)') }
+    tmux.send_keys 'c'
+    tmux.send_keys :BTab
+    tmux.until { |lines| assert lines[-2]&.start_with?('  10/10 (2/3)') }
+    tmux.send_keys 'd'
+    tmux.until do |lines|
+      assert lines[-2]&.start_with?('  10/10 ') && !lines[-2]&.include?('(')
+    end
+  end
+
   def test_with_nth
     [true, false].each do |multi|
       tmux.send_keys "(echo '  1st 2nd 3rd/';
@@ -1469,6 +1487,19 @@ class TestGoFZF < TestBase
     assert_equal '3', readonce.chomp
   end
 
+  def test_jump_events
+    tmux.send_keys "seq 1000 | #{fzf("--multi --jump-labels 12345 --bind 'ctrl-j:jump,jump:preview(echo jumped to {}),jump-cancel:preview(echo jump cancelled at {})'")}", :Enter
+    tmux.until { |lines| assert_equal '  1000/1000 (0)', lines[-2] }
+    tmux.send_keys 'C-j'
+    tmux.until { |lines| assert_includes lines[-7], '5 5' }
+    tmux.send_keys '3'
+    tmux.until { |lines| assert(lines.any? { _1.include?('jumped to 3') }) }
+    tmux.send_keys 'C-j'
+    tmux.until { |lines| assert_includes lines[-7], '5 5' }
+    tmux.send_keys 'C-c'
+    tmux.until { |lines| assert(lines.any? { _1.include?('jump cancelled at 3') }) }
+  end
+
   def test_pointer
     tmux.send_keys "seq 10 | #{fzf("--pointer '>>'")}", :Enter
     # Assert that specified pointer is displayed
@@ -1720,7 +1751,7 @@ class TestGoFZF < TestBase
   end
 
   def test_info_hidden
-    tmux.send_keys 'seq 10 | fzf --info=hidden', :Enter
+    tmux.send_keys 'seq 10 | fzf --info=hidden --no-separator', :Enter
     tmux.until { |lines| assert_equal '> 1', lines[-2] }
   end
 
@@ -1918,7 +1949,7 @@ class TestGoFZF < TestBase
   end
 
   def test_reload
-    tmux.send_keys %(seq 1000 | #{FZF} --bind 'change:reload(seq {q}),a:reload(seq 100),b:reload:seq 200' --header-lines 2 --multi 2), :Enter
+    tmux.send_keys %(seq 1000 | #{FZF} --bind 'change:reload(seq $FZF_QUERY),a:reload(seq 100),b:reload:seq 200' --header-lines 2 --multi 2), :Enter
     tmux.until { |lines| assert_equal 998, lines.match_count }
     tmux.send_keys 'a'
     tmux.until do |lines|
@@ -1943,6 +1974,11 @@ class TestGoFZF < TestBase
     tmux.until { |lines| assert_equal 10, lines.item_count }
   end
 
+  def test_reload_should_terminate_standard_input_stream
+    tmux.send_keys %(ruby -e "STDOUT.sync = true; loop { puts 1; sleep 0.1 }" | fzf --bind 'start:reload(seq 100)'), :Enter
+    tmux.until { |lines| assert_equal 100, lines.item_count }
+  end
+
   def test_clear_list_when_header_lines_changed_due_to_reload
     tmux.send_keys %(seq 10 | #{FZF} --header 0 --header-lines 3 --bind 'space:reload(seq 1)'), :Enter
     tmux.until { |lines| assert_includes lines, '  9' }
@@ -2464,6 +2500,84 @@ class TestGoFZF < TestBase
     tmux.until { |lines| assert_equal 10, lines.match_count }
   end
 
+  def test_reload_disabled_case1
+    tmux.send_keys "seq 100 | #{FZF} --query 99 --bind 'space:disable-search+reload(sleep 2; seq 1000)'", :Enter
+    tmux.until do |lines|
+      assert_equal 100, lines.item_count
+      assert_equal 1, lines.match_count
+    end
+    tmux.send_keys :Space
+    tmux.until { |lines| assert_equal 1, lines.match_count }
+    tmux.send_keys :BSpace
+    tmux.until { |lines| assert_equal 0, lines.match_count }
+    tmux.until { |lines| assert_equal 1000, lines.match_count }
+  end
+
+  def test_reload_disabled_case2
+    tmux.send_keys "seq 100 | #{FZF} --query 99 --bind 'space:disable-search+reload-sync(sleep 2; seq 1000)'", :Enter
+    tmux.until do |lines|
+      assert_equal 100, lines.item_count
+      assert_equal 1, lines.match_count
+    end
+    tmux.send_keys :Space
+    tmux.until { |lines| assert_equal 1, lines.match_count }
+    tmux.send_keys :BSpace
+    tmux.until { |lines| assert_equal 1, lines.match_count }
+    tmux.until { |lines| assert_equal 1000, lines.match_count }
+  end
+
+  def test_reload_disabled_case3
+    tmux.send_keys "seq 100 | #{FZF} --query 99 --bind 'space:disable-search+reload(sleep 2; seq 1000)+backward-delete-char'", :Enter
+    tmux.until do |lines|
+      assert_equal 100, lines.item_count
+      assert_equal 1, lines.match_count
+    end
+    tmux.send_keys :Space
+    tmux.until { |lines| assert_equal 1, lines.match_count }
+    tmux.send_keys :BSpace
+    tmux.until { |lines| assert_equal 0, lines.match_count }
+    tmux.until { |lines| assert_equal 1000, lines.match_count }
+  end
+
+  def test_reload_disabled_case4
+    tmux.send_keys "seq 100 | #{FZF} --query 99 --bind 'space:disable-search+reload-sync(sleep 2; seq 1000)+backward-delete-char'", :Enter
+    tmux.until do |lines|
+      assert_equal 100, lines.item_count
+      assert_equal 1, lines.match_count
+    end
+    tmux.send_keys :Space
+    tmux.until { |lines| assert_equal 1, lines.match_count }
+    tmux.send_keys :BSpace
+    tmux.until { |lines| assert_equal 1, lines.match_count }
+    tmux.until { |lines| assert_equal 1000, lines.match_count }
+  end
+
+  def test_reload_disabled_case5
+    tmux.send_keys "seq 100 | #{FZF} --query 99 --bind 'space:disable-search+reload(echo xx; sleep 2; seq 1000)'", :Enter
+    tmux.until do |lines|
+      assert_equal 100, lines.item_count
+      assert_equal 1, lines.match_count
+    end
+    tmux.send_keys :Space
+    tmux.until do |lines|
+      assert_equal 1, lines.item_count
+      assert_equal 1, lines.match_count
+    end
+    tmux.send_keys :BSpace
+    tmux.until { |lines| assert_equal 1001, lines.match_count }
+  end
+
+  def test_reload_disabled_case6
+    tmux.send_keys "seq 1000 | #{FZF} --disabled --bind 'change:reload:sleep 0.5; seq {q}'", :Enter
+    tmux.until { |lines| assert_equal 1000, lines.match_count }
+    tmux.send_keys '9'
+    tmux.until { |lines| assert_equal 9, lines.match_count }
+    tmux.send_keys '9'
+    tmux.until { |lines| assert_equal 99, lines.match_count }
+
+    # TODO: How do we verify if an intermediate empty list is not shown?
+  end
+
   def test_scroll_off
     tmux.send_keys "seq 1000 | #{FZF} --scroll-off=3 --bind l:last", :Enter
     tmux.until { |lines| assert_equal 1000, lines.item_count }
@@ -2582,6 +2696,7 @@ class TestGoFZF < TestBase
   def test_change_preview_window_rotate
     tmux.send_keys "seq 100 | #{FZF} --preview-window left,border-none --preview 'echo hello' --bind '" \
       "a:change-preview-window(right|down|up|hidden|)'", :Enter
+    tmux.until { |lines| assert(lines.any? { _1.include?('100/100') }) }
     3.times do
       tmux.until { |lines| lines[0].start_with?('hello') }
       tmux.send_keys 'a'
@@ -2799,6 +2914,27 @@ class TestGoFZF < TestBase
     end
   end
 
+  def test_labels_variables
+    tmux.send_keys ': | fzf --border --border-label foobar --preview "echo \$FZF_BORDER_LABEL // \$FZF_PREVIEW_LABEL" --preview-label barfoo --bind "space:change-border-label(barbaz)+change-preview-label(bazbar)+refresh-preview,enter:transform-border-label(echo 123)+transform-preview-label(echo 456)+refresh-preview"', :Enter
+    tmux.until do
+      assert_includes(_1[0], '─foobar─')
+      assert_includes(_1[1], '─barfoo─')
+      assert_includes(_1[2], ' foobar // barfoo ')
+    end
+    tmux.send_keys :Space
+    tmux.until do
+      assert_includes(_1[0], '─barbaz─')
+      assert_includes(_1[1], '─bazbar─')
+      assert_includes(_1[2], ' barbaz // bazbar ')
+    end
+    tmux.send_keys :Enter
+    tmux.until do
+      assert_includes(_1[0], '─123─')
+      assert_includes(_1[1], '─456─')
+      assert_includes(_1[2], ' 123 // 456 ')
+    end
+  end
+
   def test_info_separator_unicode
     tmux.send_keys 'seq 100 | fzf -q55', :Enter
     tmux.until { assert_includes(_1[-2], '  1/100 ─') }
@@ -3002,7 +3138,7 @@ class TestGoFZF < TestBase
     end
     tmux.send_keys :t
     tmux.until do |lines|
-      assert_includes lines[-2], '+T'
+      assert_includes lines[-2], '+t'
     end
     tmux.send_keys :BSpace
     tmux.until do |lines|
@@ -3014,7 +3150,7 @@ class TestGoFZF < TestBase
     tmux.send_keys '4'
     tmux.until do |lines|
       assert_equal 28, lines.match_count
-      refute_includes lines[-2], '+T'
+      refute_includes lines[-2], '+t'
     end
     tmux.send_keys :BSpace
     tmux.until do |lines|
@@ -3023,11 +3159,11 @@ class TestGoFZF < TestBase
     end
     tmux.send_keys :t
     tmux.until do |lines|
-      assert_includes lines[-2], '+T'
+      assert_includes lines[-2], '+t'
     end
     tmux.send_keys :Up
     tmux.until do |lines|
-      refute_includes lines[-2], '+T'
+      refute_includes lines[-2], '+t'
     end
   end
 
@@ -3114,6 +3250,17 @@ class TestGoFZF < TestBase
     tmux.send_keys :Up
     tmux.until { |lines| assert_includes lines, '> 2' }
   end
+
+  def test_fzf_pos
+    tmux.send_keys "seq 100 | #{FZF} --preview 'echo $FZF_POS / $FZF_MATCH_COUNT'", :Enter
+    tmux.until { |lines| assert(lines.any? { |line| line.include?('1 / 100') }) }
+    tmux.send_keys :Up
+    tmux.until { |lines| assert(lines.any? { |line| line.include?('2 / 100') }) }
+    tmux.send_keys '99'
+    tmux.until { |lines| assert(lines.any? { |line| line.include?('1 / 1') }) }
+    tmux.send_keys '99'
+    tmux.until { |lines| assert(lines.any? { |line| line.include?('0 / 0') }) }
+  end
 end
 
 module TestShell
@@ -3307,7 +3454,10 @@ module CompletionTest
     tmux.send_keys 'cat /tmp/fzf\ test/**', :Tab
     tmux.until { |lines| assert_operator lines.match_count, :>, 0 }
     tmux.send_keys 'foobar$'
-    tmux.until { |lines| assert_equal 1, lines.match_count }
+    tmux.until do |lines|
+      assert_equal 1, lines.match_count
+      assert lines.any_include?('> /tmp/fzf test/foobar')
+    end
     tmux.send_keys :Enter
     tmux.until(true) { |lines| assert_equal 'cat /tmp/fzf\ test/foobar', lines[-1] }
 
@@ -3342,7 +3492,11 @@ module CompletionTest
     tmux.until { |lines| assert_operator lines.match_count, :>, 0 }
     tmux.send_keys :Tab, :Tab # Tab does not work here
     tmux.send_keys 55
-    tmux.until { |lines| assert_equal 1, lines.match_count }
+    tmux.until do |lines|
+      assert_equal 1, lines.match_count
+      assert_includes lines, '> 55'
+      assert_includes lines, '> /tmp/fzf-test/d55'
+    end
     tmux.send_keys :Enter
     tmux.until(true) { |lines| assert_equal 'cd /tmp/fzf-test/d55/', lines[-1] }
     tmux.send_keys :xx

uninstall

@@ -94,6 +94,7 @@ done
 bind_file="${fish_dir}/functions/fish_user_key_bindings.fish"
 if [ -f "$bind_file" ]; then
   remove_line "$bind_file" "fzf_key_bindings"
+  remove_line "$bind_file" "fzf --fish | source"
 fi
 
 if [ -d "${fish_dir}/functions" ]; then