Add $FZF_RAW for conditional actions

CHANGELOG.md

@@ -50,6 +50,22 @@ fzf --raw --color hidden:red:strikethrough
 fzf --raw --color hidden:regular:red:strikethrough
 ```
 
+#### Conditional actions for raw mode
+
+You may want to perform different actions depending on whether the current item
+is a match or not. For that, fzf now exports `$FZF_RAW` environment variable.
+
+It's:
+
+- Undefined if raw mode is disabled
+- `1` if the current item is a match
+- `0` otherwise
+
+```sh
+# Do not allow selecting non-matching items
+fzf --raw --bind 'enter:transform:[[ ${FZF_RAW-1} = 1 ]] && echo accept || echo bell'
+```
+
 #### Leveraging raw mode in shell integration
 
 The `CTRL-R` binding (command history) now lets you toggle raw mode with

man/man1/fzf.1

@@ -1377,6 +1377,8 @@ fzf exports the following environment variables to its child processes.
 .BR FZF_PREVIEW_LINES "   Number of lines in the preview window"
 .br
 .BR FZF_PREVIEW_COLUMNS " Number of columns in the preview window"
+.br
+.BR FZF_RAW "             Only in raw mode. 1 if the current item matches, 0 otherwise"
 
 .SH EXTENDED SEARCH MODE
 

src/terminal.go

@@ -1305,6 +1305,13 @@ func (t *Terminal) environImpl(forPreview bool) []string {
 	if len(t.nthCurrent) > 0 {
 		env = append(env, "FZF_NTH="+RangesToString(t.nthCurrent))
 	}
+	if t.raw {
+		val := "0"
+		if t.isCurrentItemMatch() {
+			val = "1"
+		}
+		env = append(env, "FZF_RAW="+val)
+	}
 	inputState := "enabled"
 	if t.inputless {
 		inputState = "hidden"

test/test_raw.rb

@@ -5,7 +5,7 @@ require_relative 'lib/common'
 # Testing raw mode
 class TestRaw < TestInteractive
   def test_raw_mode
-    tmux.send_keys %(seq 1000 | #{FZF} --raw --bind ctrl-x:toggle-raw,a:enable-raw,b:disable-raw --gutter '▌' --multi), :Enter
+    tmux.send_keys %(seq 1000 | #{FZF} --raw --bind ctrl-x:toggle-raw,a:enable-raw,b:disable-raw --gutter '▌' --multi --bind 'space:transform-prompt:echo "[[$FZF_RAW]] "'), :Enter
     tmux.until { assert_equal 1000, it.match_count }
 
     tmux.send_keys 1
@@ -64,11 +64,20 @@ class TestRaw < TestInteractive
       assert_includes it, '▖ 10'
     end
 
+    tmux.send_keys :Down, :Space
+    tmux.until { assert_includes it, '[[0]] 11' }
+
+    tmux.send_keys :Up, :Space
+    tmux.until { assert_includes it, '[[1]] 11' }
+
     tmux.send_keys 'b'
     tmux.until do
       assert_equal 1, it.select_count
       assert_includes it, '▌ 110'
       assert_includes it, '>>11'
     end
+
+    tmux.send_keys :Space
+    tmux.until { assert_includes it, '[[]] 11' }
   end
 end