Allow actions to multiple keys and events at once

Close #4206

ADVANCED.md

@@ -515,8 +515,6 @@ remainder of the query is passed to fzf for secondary filtering.
 ```sh
 #!/usr/bin/env bash
 
-# Switch between Ripgrep mode and fzf filtering mode (CTRL-T)
-RG_PREFIX="rg --column --line-number --no-heading --color=always --smart-case "
 INITIAL_QUERY="${*:-}"
 TRANSFORMER='
   words=($FZF_QUERY)
@@ -530,15 +528,14 @@ TRANSFORMER='
   # restart ripgrep and reload the list
   elif ! [[ $FZF_QUERY =~ \ $ ]]; then
     pat=${words[0]}
-    echo "reload:sleep 0.1; $RG_PREFIX \"$pat\" || true"
+    echo "reload:sleep 0.1; rg --column --line-number --no-heading --color=always --smart-case \"$pat\" || true"
   else
     echo search:
   fi
 '
 fzf --ansi --disabled --query "$INITIAL_QUERY" \
     --with-shell 'bash -c' \
-    --bind "start:transform:$TRANSFORMER" \
-    --bind "change:transform:$TRANSFORMER" \
+    --bind "start,change:transform:$TRANSFORMER" \
     --color "hl:-1:underline,hl+:-1:underline:reverse" \
     --delimiter : \
     --preview 'bat --color=always {1} --highlight-line {2}' \
@@ -575,8 +572,7 @@ pods() {
     --info=inline --layout=reverse --header-lines=1 \
     --prompt "$(kubectl config current-context | sed 's/-context$//')> " \
     --header $'╱ Enter (kubectl exec) ╱ CTRL-O (open log in editor) ╱ CTRL-R (reload) ╱\n\n' \
-    --bind 'start:reload:$command' \
-    --bind 'ctrl-r:reload:$command' \
+    --bind 'start,ctrl-r:reload:$command' \
     --bind 'ctrl-/:change-preview-window(80%,border-bottom|hidden|)' \
     --bind 'enter:execute:kubectl exec -it --namespace {1} {2} -- bash' \
     --bind 'ctrl-o:execute:${EDITOR:-vim} <(kubectl logs --all-containers --namespace {1} {2})' \

man/man1/fzf.1

@@ -1291,7 +1291,9 @@ more \fBactions\fR. You can use it to customize key bindings or implement
 dynamic behaviors.
 
 \fB\-\-bind\fR takes a comma-separated list of binding expressions. Each binding
-expression is \fBKEY:ACTION\fR or \fBEVENT:ACTION\fR.
+expression is \fBKEY:ACTION\fR or \fBEVENT:ACTION\fR. You can bind actions to
+multiple keys and events by writing comma-separated list of keys and events
+before the colon. e.g. \fBKEY1,KEY2,EVENT1,EVENT2:ACTION\fR.
 
 e.g.
      \fBfzf \-\-bind=ctrl\-j:accept,ctrl\-k:kill\-line\fR

src/options.go

@@ -1638,33 +1638,44 @@ func parseKeymap(keymap map[tui.Event][]*action, str string) error {
 	var err error
 	masked := maskActionContents(str)
 	idx := 0
+	keys := []string{}
 	for _, pairStr := range strings.Split(masked, ",") {
 		origPairStr := str[idx : idx+len(pairStr)]
 		idx += len(pairStr) + 1
 
 		pair := strings.SplitN(pairStr, ":", 2)
-		if len(pair) < 2 {
-			return errors.New("bind action not specified: " + origPairStr)
+		if len(pair[0]) == 0 {
+			return errors.New("key name required")
 		}
-		var key tui.Event
-		if len(pair[0]) == 1 && pair[0][0] == escapedColon {
-			key = tui.Key(':')
-		} else if len(pair[0]) == 1 && pair[0][0] == escapedComma {
-			key = tui.Key(',')
-		} else if len(pair[0]) == 1 && pair[0][0] == escapedPlus {
-			key = tui.Key('+')
-		} else {
-			keys, err := parseKeyChordsImpl(pair[0], "key name required")
+		keys = append(keys, pair[0])
+		if len(pair) < 2 {
+			continue
+		}
+		for _, keyName := range keys {
+			var key tui.Event
+			if len(keyName) == 1 && keyName[0] == escapedColon {
+				key = tui.Key(':')
+			} else if len(keyName) == 1 && keyName[0] == escapedComma {
+				key = tui.Key(',')
+			} else if len(keyName) == 1 && keyName[0] == escapedPlus {
+				key = tui.Key('+')
+			} else {
+				keys, err := parseKeyChordsImpl(keyName, "key name required")
+				if err != nil {
+					return err
+				}
+				key = firstKey(keys)
+			}
+			putAllowed := key.Type == tui.Rune && unicode.IsGraphic(key.Char)
+			keymap[key], err = parseActionList(pair[1], origPairStr[len(pair[0])+1:], keymap[key], putAllowed)
 			if err != nil {
 				return err
 			}
-			key = firstKey(keys)
-		}
-		putAllowed := key.Type == tui.Rune && unicode.IsGraphic(key.Char)
-		keymap[key], err = parseActionList(pair[1], origPairStr[len(pair[0])+1:], keymap[key], putAllowed)
-		if err != nil {
-			return err
 		}
+		keys = keys[:0]
+	}
+	if len(keys) > 0 {
+		return errors.New("bind action not specified: " + strings.Join(keys, ", "))
 	}
 	return nil
 }

test/test_core.rb

@@ -418,9 +418,9 @@ class TestCore < TestInteractive
   end
 
   def test_bind
-    tmux.send_keys "seq 1 1000 | #{fzf('-m --bind=ctrl-j:accept,u:up,T:toggle-up,t:toggle')}", :Enter
+    tmux.send_keys "seq 1 1000 | #{fzf('-m --bind=ctrl-j:accept,u,U:up,X,Y,Z:toggle-up,t:toggle')}", :Enter
     tmux.until { |lines| assert_equal '  1000/1000 (0)', lines[-2] }
-    tmux.send_keys 'uuu', 'TTT', 'tt', 'uu', 'ttt', 'C-j'
+    tmux.send_keys 'uUu', 'XYZ', 'tt', 'uu', 'ttt', 'C-j'
     assert_equal %w[4 5 6 9], fzf_output_lines
   end