Add 'trigger(KEY_OR_EVENT[,...])' action

CHANGELOG.md

@@ -17,6 +17,22 @@ CHANGELOG
             echo "execute-silent(echo -n \{} | pbcopy)+bell"
       '
   ```
+- Added `trigger(...)` action that triggers events bound to another key or event.
+  ```sh
+  # You can click on each key name to trigger the actions bound to that key
+  fzf --footer 'Ctrl-E: Edit / Ctrl-V: View / Ctrl-Y: Copy to clipboard' \
+      --with-shell 'bash -c' \
+      --bind 'ctrl-e:execute:vim {}' \
+      --bind 'ctrl-v:execute:view {}' \
+      --bind 'ctrl-y:execute-silent(echo -n {} | pbcopy)+bell' \
+      --bind 'click-footer:transform:
+        [[ $FZF_CLICK_FOOTER_WORD =~ Ctrl ]] && echo "trigger(${FZF_CLICK_FOOTER_WORD%:})"
+      '
+  ```
+    - You can specify a series of keys and events
+      ```sh
+      fzf --bind 'a:up,b:trigger(a,a,a)'
+      ```
 - Added support for `{*n}` and `{*nf}` placeholder.
     - `{*n}` evaluates to the zero-based ordinal index of all matched items.
     - `{*nf}` evaluates to the temporary file containing that.

man/man1/fzf.1

@@ -1817,6 +1817,7 @@ A key or an event can be bound to one or more of the following actions.
     \fBtransform\-prompt(...)\fR        (transform prompt string using an external command)
     \fBtransform\-query(...)\fR         (transform query string using an external command)
     \fBtransform\-search(...)\fR        (trigger fzf search with the output of an external command)
+    \fBtrigger(...)\fR                 (trigger actions bound to a comma-separated list of keys and events)
     \fBunbind(...)\fR                  (unbind bindings)
     \fBunix\-line\-discard\fR            \fIctrl\-u\fR
     \fBunix\-word\-rubout\fR             \fIctrl\-w\fR

src/actiontype_string.go

@@ -113,65 +113,66 @@ func _() {
 	_ = x[actTransformPrompt-102]
 	_ = x[actTransformQuery-103]
 	_ = x[actTransformSearch-104]
-	_ = x[actBgTransform-105]
-	_ = x[actBgTransformBorderLabel-106]
-	_ = x[actBgTransformGhost-107]
-	_ = x[actBgTransformHeader-108]
-	_ = x[actBgTransformFooter-109]
-	_ = x[actBgTransformHeaderLabel-110]
-	_ = x[actBgTransformFooterLabel-111]
-	_ = x[actBgTransformInputLabel-112]
-	_ = x[actBgTransformListLabel-113]
-	_ = x[actBgTransformNth-114]
-	_ = x[actBgTransformPointer-115]
-	_ = x[actBgTransformPreviewLabel-116]
-	_ = x[actBgTransformPrompt-117]
-	_ = x[actBgTransformQuery-118]
-	_ = x[actBgTransformSearch-119]
-	_ = x[actBgCancel-120]
-	_ = x[actSearch-121]
-	_ = x[actPreview-122]
-	_ = x[actPreviewTop-123]
-	_ = x[actPreviewBottom-124]
-	_ = x[actPreviewUp-125]
-	_ = x[actPreviewDown-126]
-	_ = x[actPreviewPageUp-127]
-	_ = x[actPreviewPageDown-128]
-	_ = x[actPreviewHalfPageUp-129]
-	_ = x[actPreviewHalfPageDown-130]
-	_ = x[actPrevHistory-131]
-	_ = x[actPrevSelected-132]
-	_ = x[actPrint-133]
-	_ = x[actPut-134]
-	_ = x[actNextHistory-135]
-	_ = x[actNextSelected-136]
-	_ = x[actExecute-137]
-	_ = x[actExecuteSilent-138]
-	_ = x[actExecuteMulti-139]
-	_ = x[actSigStop-140]
-	_ = x[actFirst-141]
-	_ = x[actLast-142]
-	_ = x[actReload-143]
-	_ = x[actReloadSync-144]
-	_ = x[actDisableSearch-145]
-	_ = x[actEnableSearch-146]
-	_ = x[actSelect-147]
-	_ = x[actDeselect-148]
-	_ = x[actUnbind-149]
-	_ = x[actRebind-150]
-	_ = x[actToggleBind-151]
-	_ = x[actBecome-152]
-	_ = x[actShowHeader-153]
-	_ = x[actHideHeader-154]
-	_ = x[actBell-155]
-	_ = x[actExclude-156]
-	_ = x[actExcludeMulti-157]
-	_ = x[actAsync-158]
+	_ = x[actTrigger-105]
+	_ = x[actBgTransform-106]
+	_ = x[actBgTransformBorderLabel-107]
+	_ = x[actBgTransformGhost-108]
+	_ = x[actBgTransformHeader-109]
+	_ = x[actBgTransformFooter-110]
+	_ = x[actBgTransformHeaderLabel-111]
+	_ = x[actBgTransformFooterLabel-112]
+	_ = x[actBgTransformInputLabel-113]
+	_ = x[actBgTransformListLabel-114]
+	_ = x[actBgTransformNth-115]
+	_ = x[actBgTransformPointer-116]
+	_ = x[actBgTransformPreviewLabel-117]
+	_ = x[actBgTransformPrompt-118]
+	_ = x[actBgTransformQuery-119]
+	_ = x[actBgTransformSearch-120]
+	_ = x[actBgCancel-121]
+	_ = x[actSearch-122]
+	_ = x[actPreview-123]
+	_ = x[actPreviewTop-124]
+	_ = x[actPreviewBottom-125]
+	_ = x[actPreviewUp-126]
+	_ = x[actPreviewDown-127]
+	_ = x[actPreviewPageUp-128]
+	_ = x[actPreviewPageDown-129]
+	_ = x[actPreviewHalfPageUp-130]
+	_ = x[actPreviewHalfPageDown-131]
+	_ = x[actPrevHistory-132]
+	_ = x[actPrevSelected-133]
+	_ = x[actPrint-134]
+	_ = x[actPut-135]
+	_ = x[actNextHistory-136]
+	_ = x[actNextSelected-137]
+	_ = x[actExecute-138]
+	_ = x[actExecuteSilent-139]
+	_ = x[actExecuteMulti-140]
+	_ = x[actSigStop-141]
+	_ = x[actFirst-142]
+	_ = x[actLast-143]
+	_ = x[actReload-144]
+	_ = x[actReloadSync-145]
+	_ = x[actDisableSearch-146]
+	_ = x[actEnableSearch-147]
+	_ = x[actSelect-148]
+	_ = x[actDeselect-149]
+	_ = x[actUnbind-150]
+	_ = x[actRebind-151]
+	_ = x[actToggleBind-152]
+	_ = x[actBecome-153]
+	_ = x[actShowHeader-154]
+	_ = x[actHideHeader-155]
+	_ = x[actBell-156]
+	_ = x[actExclude-157]
+	_ = x[actExcludeMulti-158]
+	_ = x[actAsync-159]
 }
 
-const _actionType_name = "actIgnoreactStartactClickactInvalidactBracketedPasteBeginactBracketedPasteEndactCharactMouseactBeginningOfLineactAbortactAcceptactAcceptNonEmptyactAcceptOrPrintQueryactBackwardCharactBackwardDeleteCharactBackwardDeleteCharEofactBackwardWordactCancelactChangeBorderLabelactChangeGhostactChangeHeaderactChangeFooteractChangeHeaderLabelactChangeFooterLabelactChangeInputLabelactChangeListLabelactChangeMultiactChangeNthactChangePointeractChangePreviewactChangePreviewLabelactChangePreviewWindowactChangePromptactChangeQueryactClearScreenactClearQueryactClearSelectionactCloseactDeleteCharactDeleteCharEofactEndOfLineactFatalactForwardCharactForwardWordactKillLineactKillWordactUnixLineDiscardactUnixWordRuboutactYankactBackwardKillWordactSelectAllactDeselectAllactToggleactToggleSearchactToggleAllactToggleDownactToggleUpactToggleInactToggleOutactToggleTrackactToggleTrackCurrentactToggleHeaderactToggleWrapactToggleMultiLineactToggleHscrollactTrackCurrentactToggleInputactHideInputactShowInputactUntrackCurrentactDownactUpactPageUpactPageDownactPositionactHalfPageUpactHalfPageDownactOffsetUpactOffsetDownactOffsetMiddleactJumpactJumpAcceptactPrintQueryactRefreshPreviewactReplaceQueryactToggleSortactShowPreviewactHidePreviewactTogglePreviewactTogglePreviewWrapactTransformactTransformBorderLabelactTransformGhostactTransformHeaderactTransformFooteractTransformHeaderLabelactTransformFooterLabelactTransformInputLabelactTransformListLabelactTransformNthactTransformPointeractTransformPreviewLabelactTransformPromptactTransformQueryactTransformSearchactBgTransformactBgTransformBorderLabelactBgTransformGhostactBgTransformHeaderactBgTransformFooteractBgTransformHeaderLabelactBgTransformFooterLabelactBgTransformInputLabelactBgTransformListLabelactBgTransformNthactBgTransformPointeractBgTransformPreviewLabelactBgTransformPromptactBgTransformQueryactBgTransformSearchactBgCancelactSearchactPreviewactPreviewTopactPreviewBottomactPreviewUpactPreviewDownactPreviewPageUpactPreviewPageDownactPreviewHalfPageUpactPreviewHalfPageDownactPrevHistoryactPrevSelectedactPrintactPutactNextHistoryactNextSelectedactExecuteactExecuteSilentactExecuteMultiactSigStopactFirstactLastactReloadactReloadSyncactDisableSearchactEnableSearchactSelectactDeselectactUnbindactRebindactToggleBindactBecomeactShowHeaderactHideHeaderactBellactExcludeactExcludeMultiactAsync"
+const _actionType_name = "actIgnoreactStartactClickactInvalidactBracketedPasteBeginactBracketedPasteEndactCharactMouseactBeginningOfLineactAbortactAcceptactAcceptNonEmptyactAcceptOrPrintQueryactBackwardCharactBackwardDeleteCharactBackwardDeleteCharEofactBackwardWordactCancelactChangeBorderLabelactChangeGhostactChangeHeaderactChangeFooteractChangeHeaderLabelactChangeFooterLabelactChangeInputLabelactChangeListLabelactChangeMultiactChangeNthactChangePointeractChangePreviewactChangePreviewLabelactChangePreviewWindowactChangePromptactChangeQueryactClearScreenactClearQueryactClearSelectionactCloseactDeleteCharactDeleteCharEofactEndOfLineactFatalactForwardCharactForwardWordactKillLineactKillWordactUnixLineDiscardactUnixWordRuboutactYankactBackwardKillWordactSelectAllactDeselectAllactToggleactToggleSearchactToggleAllactToggleDownactToggleUpactToggleInactToggleOutactToggleTrackactToggleTrackCurrentactToggleHeaderactToggleWrapactToggleMultiLineactToggleHscrollactTrackCurrentactToggleInputactHideInputactShowInputactUntrackCurrentactDownactUpactPageUpactPageDownactPositionactHalfPageUpactHalfPageDownactOffsetUpactOffsetDownactOffsetMiddleactJumpactJumpAcceptactPrintQueryactRefreshPreviewactReplaceQueryactToggleSortactShowPreviewactHidePreviewactTogglePreviewactTogglePreviewWrapactTransformactTransformBorderLabelactTransformGhostactTransformHeaderactTransformFooteractTransformHeaderLabelactTransformFooterLabelactTransformInputLabelactTransformListLabelactTransformNthactTransformPointeractTransformPreviewLabelactTransformPromptactTransformQueryactTransformSearchactTriggeractBgTransformactBgTransformBorderLabelactBgTransformGhostactBgTransformHeaderactBgTransformFooteractBgTransformHeaderLabelactBgTransformFooterLabelactBgTransformInputLabelactBgTransformListLabelactBgTransformNthactBgTransformPointeractBgTransformPreviewLabelactBgTransformPromptactBgTransformQueryactBgTransformSearchactBgCancelactSearchactPreviewactPreviewTopactPreviewBottomactPreviewUpactPreviewDownactPreviewPageUpactPreviewPageDownactPreviewHalfPageUpactPreviewHalfPageDownactPrevHistoryactPrevSelectedactPrintactPutactNextHistoryactNextSelectedactExecuteactExecuteSilentactExecuteMultiactSigStopactFirstactLastactReloadactReloadSyncactDisableSearchactEnableSearchactSelectactDeselectactUnbindactRebindactToggleBindactBecomeactShowHeaderactHideHeaderactBellactExcludeactExcludeMultiactAsync"
 
-var _actionType_index = [...]uint16{0, 9, 17, 25, 35, 57, 77, 84, 92, 110, 118, 127, 144, 165, 180, 201, 225, 240, 249, 269, 283, 298, 313, 333, 353, 372, 390, 404, 416, 432, 448, 469, 491, 506, 520, 534, 547, 564, 572, 585, 601, 613, 621, 635, 649, 660, 671, 689, 706, 713, 732, 744, 758, 767, 782, 794, 807, 818, 829, 841, 855, 876, 891, 904, 922, 938, 953, 967, 979, 991, 1008, 1015, 1020, 1029, 1040, 1051, 1064, 1079, 1090, 1103, 1118, 1125, 1138, 1151, 1168, 1183, 1196, 1210, 1224, 1240, 1260, 1272, 1295, 1312, 1330, 1348, 1371, 1394, 1416, 1437, 1452, 1471, 1495, 1513, 1530, 1548, 1562, 1587, 1606, 1626, 1646, 1671, 1696, 1720, 1743, 1760, 1781, 1807, 1827, 1846, 1866, 1877, 1886, 1896, 1909, 1925, 1937, 1951, 1967, 1985, 2005, 2027, 2041, 2056, 2064, 2070, 2084, 2099, 2109, 2125, 2140, 2150, 2158, 2165, 2174, 2187, 2203, 2218, 2227, 2238, 2247, 2256, 2269, 2278, 2291, 2304, 2311, 2321, 2336, 2344}
+var _actionType_index = [...]uint16{0, 9, 17, 25, 35, 57, 77, 84, 92, 110, 118, 127, 144, 165, 180, 201, 225, 240, 249, 269, 283, 298, 313, 333, 353, 372, 390, 404, 416, 432, 448, 469, 491, 506, 520, 534, 547, 564, 572, 585, 601, 613, 621, 635, 649, 660, 671, 689, 706, 713, 732, 744, 758, 767, 782, 794, 807, 818, 829, 841, 855, 876, 891, 904, 922, 938, 953, 967, 979, 991, 1008, 1015, 1020, 1029, 1040, 1051, 1064, 1079, 1090, 1103, 1118, 1125, 1138, 1151, 1168, 1183, 1196, 1210, 1224, 1240, 1260, 1272, 1295, 1312, 1330, 1348, 1371, 1394, 1416, 1437, 1452, 1471, 1495, 1513, 1530, 1548, 1558, 1572, 1597, 1616, 1636, 1656, 1681, 1706, 1730, 1753, 1770, 1791, 1817, 1837, 1856, 1876, 1887, 1896, 1906, 1919, 1935, 1947, 1961, 1977, 1995, 2015, 2037, 2051, 2066, 2074, 2080, 2094, 2109, 2119, 2135, 2150, 2160, 2168, 2175, 2184, 2197, 2213, 2228, 2237, 2248, 2257, 2266, 2279, 2288, 2301, 2314, 2321, 2331, 2346, 2354}
 
 func (i actionType) String() string {
 	if i < 0 || i >= actionType(len(_actionType_index)-1) {

src/options.go

@@ -932,15 +932,12 @@ func parseBorder(str string, optional bool) (tui.BorderShape, error) {
 	return tui.BorderNone, errors.New("invalid border style (expected: rounded|sharp|bold|block|thinblock|double|horizontal|vertical|top|bottom|left|right|none)")
 }
 
-func parseKeyChords(str string, message string) (map[tui.Event]string, error) {
-	return parseKeyChordsImpl(str, message)
-}
-
-func parseKeyChordsImpl(str string, message string) (map[tui.Event]string, error) {
+func parseKeyChords(str string, message string) (map[tui.Event]string, []tui.Event, error) {
 	if len(str) == 0 {
-		return nil, errors.New(message)
+		return nil, nil, errors.New(message)
 	}
 
+	list := []tui.Event{}
 	str = regexp.MustCompile("(?i)(alt-),").ReplaceAllString(str, "$1"+string([]rune{escapedComma}))
 	tokens := strings.Split(str, ",")
 	if str == "," || strings.HasPrefix(str, ",,") || strings.HasSuffix(str, ",,") || strings.Contains(str, ",,,") {
@@ -956,6 +953,7 @@ func parseKeyChordsImpl(str string, message string) (map[tui.Event]string, error
 		lkey := strings.ToLower(key)
 		add := func(e tui.EventType) {
 			chords[e.AsEvent()] = key
+			list = append(list, e.AsEvent())
 		}
 		switch lkey {
 		case "up":
@@ -969,7 +967,9 @@ func parseKeyChordsImpl(str string, message string) (map[tui.Event]string, error
 		case "enter", "return":
 			add(tui.Enter)
 		case "space":
-			chords[tui.Key(' ')] = key
+			evt := tui.Key(' ')
+			chords[evt] = key
+			list = append(list, evt)
 		case "backspace", "bspace", "bs":
 			add(tui.Backspace)
 		case "ctrl-space":
@@ -1013,9 +1013,13 @@ func parseKeyChordsImpl(str string, message string) (map[tui.Event]string, error
 		case "multi":
 			add(tui.Multi)
 		case "alt-enter", "alt-return":
-			chords[tui.CtrlAltKey('m')] = key
+			evt := tui.CtrlAltKey('m')
+			chords[evt] = key
+			list = append(list, evt)
 		case "alt-space":
-			chords[tui.AltKey(' ')] = key
+			evt := tui.AltKey(' ')
+			chords[evt] = key
+			list = append(list, evt)
 		case "alt-bs", "alt-bspace", "alt-backspace":
 			add(tui.AltBackspace)
 		case "alt-up":
@@ -1093,7 +1097,9 @@ func parseKeyChordsImpl(str string, message string) (map[tui.Event]string, error
 		default:
 			runes := []rune(key)
 			if len(key) == 10 && strings.HasPrefix(lkey, "ctrl-alt-") && isAlphabet(lkey[9]) {
-				chords[tui.CtrlAltKey(rune(key[9]))] = key
+				evt := tui.CtrlAltKey(rune(key[9]))
+				chords[evt] = key
+				list = append(list, evt)
 			} else if len(key) == 6 && strings.HasPrefix(lkey, "ctrl-") && isAlphabet(lkey[5]) {
 				add(tui.EventType(tui.CtrlA.Int() + int(lkey[5]) - 'a'))
 			} else if len(runes) == 5 && strings.HasPrefix(lkey, "alt-") {
@@ -1106,17 +1112,21 @@ func parseKeyChordsImpl(str string, message string) (map[tui.Event]string, error
 				case escapedPlus:
 					r = '+'
 				}
-				chords[tui.AltKey(r)] = key
+				evt := tui.AltKey(r)
+				chords[evt] = key
+				list = append(list, evt)
 			} else if len(key) == 2 && strings.HasPrefix(lkey, "f") && key[1] >= '1' && key[1] <= '9' {
 				add(tui.EventType(tui.F1.Int() + int(key[1]) - '1'))
 			} else if len(runes) == 1 {
-				chords[tui.Key(runes[0])] = key
+				evt := tui.Key(runes[0])
+				chords[evt] = key
+				list = append(list, evt)
 			} else {
-				return nil, errors.New("unsupported key: " + key)
+				return nil, list, errors.New("unsupported key: " + key)
 			}
 		}
 	}
-	return chords, nil
+	return chords, list, nil
 }
 
 func parseScheme(str string) (string, []criterion, error) {
@@ -1439,7 +1449,7 @@ const (
 
 func init() {
 	executeRegexp = regexp.MustCompile(
-		`(?si)[:+](become|execute(?:-multi|-silent)?|reload(?:-sync)?|preview|(?:change|bg-transform|transform)-(?:query|prompt|(?:border|list|preview|input|header|footer)-label|header|footer|search|nth|pointer|ghost)|bg-transform|transform|change-(?:preview-window|preview|multi)|(?:re|un|toggle-)bind|pos|put|print|search)`)
+		`(?si)[:+](become|execute(?:-multi|-silent)?|reload(?:-sync)?|preview|(?:change|bg-transform|transform)-(?:query|prompt|(?:border|list|preview|input|header|footer)-label|header|footer|search|nth|pointer|ghost)|bg-transform|transform|change-(?:preview-window|preview|multi)|(?:re|un|toggle-)bind|pos|put|print|search|trigger)`)
 	splitRegexp = regexp.MustCompile("[,:]+")
 	actionNameRegexp = regexp.MustCompile("(?i)^[a-z-]+")
 }
@@ -1736,7 +1746,7 @@ func parseActionList(masked string, original string, prevActions []*action, putA
 				}
 				switch t {
 				case actUnbind, actRebind, actToggleBind:
-					if _, err := parseKeyChordsImpl(actionArg, spec[0:offset]+" target required"); err != nil {
+					if _, _, err := parseKeyChords(actionArg, spec[0:offset]+" target required"); err != nil {
 						return nil, err
 					}
 				case actChangePreviewWindow:
@@ -1781,7 +1791,7 @@ func parseKeymap(keymap map[tui.Event][]*action, str string) error {
 			} else if len(keyName) == 1 && keyName[0] == escapedPlus {
 				key = tui.Key('+')
 			} else {
-				keys, err := parseKeyChordsImpl(keyName, "key name required")
+				keys, _, err := parseKeyChords(keyName, "key name required")
 				if err != nil {
 					return err
 				}
@@ -1928,6 +1938,8 @@ func isExecuteAction(str string) actionType {
 		return actBgTransformQuery
 	case "bg-transform-search":
 		return actBgTransformSearch
+	case "trigger":
+		return actTrigger
 	case "search":
 		return actSearch
 	}
@@ -1935,7 +1947,7 @@ func isExecuteAction(str string) actionType {
 }
 
 func parseToggleSort(keymap map[tui.Event][]*action, str string) error {
-	keys, err := parseKeyChords(str, "key name required")
+	keys, _, err := parseKeyChords(str, "key name required")
 	if err != nil {
 		return err
 	}
@@ -2474,7 +2486,7 @@ func parseOptions(index *int, opts *Options, allArgs []string) error {
 			if err != nil {
 				return err
 			}
-			chords, err := parseKeyChords(str, "key names required")
+			chords, _, err := parseKeyChords(str, "key names required")
 			if err != nil {
 				return err
 			}

src/options_test.go

@@ -142,7 +142,7 @@ func TestIrrelevantNth(t *testing.T) {
 }
 
 func TestParseKeys(t *testing.T) {
-	pairs, _ := parseKeyChords("ctrl-z,alt-z,f2,@,Alt-a,!,ctrl-G,J,g,ctrl-alt-a,ALT-enter,alt-SPACE", "")
+	pairs, _, _ := parseKeyChords("ctrl-z,alt-z,f2,@,Alt-a,!,ctrl-G,J,g,ctrl-alt-a,ALT-enter,alt-SPACE", "")
 	checkEvent := func(e tui.Event, s string) {
 		if pairs[e] != s {
 			t.Errorf("%s != %s", pairs[e], s)
@@ -168,7 +168,7 @@ func TestParseKeys(t *testing.T) {
 	checkEvent(tui.AltKey(' '), "alt-SPACE")
 
 	// Synonyms
-	pairs, _ = parseKeyChords("enter,Return,space,tab,btab,esc,up,down,left,right", "")
+	pairs, _, _ = parseKeyChords("enter,Return,space,tab,btab,esc,up,down,left,right", "")
 	if len(pairs) != 9 {
 		t.Error(9)
 	}
@@ -182,7 +182,7 @@ func TestParseKeys(t *testing.T) {
 	check(tui.Left, "left")
 	check(tui.Right, "right")
 
-	pairs, _ = parseKeyChords("Tab,Ctrl-I,PgUp,page-up,pgdn,Page-Down,Home,End,Alt-BS,Alt-BSpace,shift-left,shift-right,btab,shift-tab,return,Enter,bspace", "")
+	pairs, _, _ = parseKeyChords("Tab,Ctrl-I,PgUp,page-up,pgdn,Page-Down,Home,End,Alt-BS,Alt-BSpace,shift-left,shift-right,btab,shift-tab,return,Enter,bspace", "")
 	if len(pairs) != 11 {
 		t.Error(11)
 	}
@@ -211,40 +211,40 @@ func TestParseKeysWithComma(t *testing.T) {
 		}
 	}
 
-	pairs, _ := parseKeyChords(",", "")
+	pairs, _, _ := parseKeyChords(",", "")
 	checkN(len(pairs), 1)
 	check(pairs, tui.Key(','), ",")
 
-	pairs, _ = parseKeyChords(",,a,b", "")
+	pairs, _, _ = parseKeyChords(",,a,b", "")
 	checkN(len(pairs), 3)
 	check(pairs, tui.Key('a'), "a")
 	check(pairs, tui.Key('b'), "b")
 	check(pairs, tui.Key(','), ",")
 
-	pairs, _ = parseKeyChords("a,b,,", "")
+	pairs, _, _ = parseKeyChords("a,b,,", "")
 	checkN(len(pairs), 3)
 	check(pairs, tui.Key('a'), "a")
 	check(pairs, tui.Key('b'), "b")
 	check(pairs, tui.Key(','), ",")
 
-	pairs, _ = parseKeyChords("a,,,b", "")
+	pairs, _, _ = parseKeyChords("a,,,b", "")
 	checkN(len(pairs), 3)
 	check(pairs, tui.Key('a'), "a")
 	check(pairs, tui.Key('b'), "b")
 	check(pairs, tui.Key(','), ",")
 
-	pairs, _ = parseKeyChords("a,,,b,c", "")
+	pairs, _, _ = parseKeyChords("a,,,b,c", "")
 	checkN(len(pairs), 4)
 	check(pairs, tui.Key('a'), "a")
 	check(pairs, tui.Key('b'), "b")
 	check(pairs, tui.Key('c'), "c")
 	check(pairs, tui.Key(','), ",")
 
-	pairs, _ = parseKeyChords(",,,", "")
+	pairs, _, _ = parseKeyChords(",,,", "")
 	checkN(len(pairs), 1)
 	check(pairs, tui.Key(','), ",")
 
-	pairs, _ = parseKeyChords(",ALT-,,", "")
+	pairs, _, _ = parseKeyChords(",ALT-,,", "")
 	checkN(len(pairs), 1)
 	check(pairs, tui.AltKey(','), "ALT-,")
 }

src/terminal.go

@@ -604,6 +604,8 @@ const (
 	actTransformQuery
 	actTransformSearch
 
+	actTrigger
+
 	actBgTransform
 	actBgTransformBorderLabel
 	actBgTransformGhost
@@ -5443,6 +5445,7 @@ func (t *Terminal) Loop() error {
 				return nil
 			}
 		}
+		triggering := map[tui.Event]struct{}{}
 		previousInput := t.input
 		previousCx := t.cx
 		previousVersion := t.version
@@ -6234,6 +6237,20 @@ func (t *Terminal) Loop() error {
 			case actDisableSearch:
 				t.paused = true
 				req(reqPrompt)
+			case actTrigger:
+				if _, chords, err := parseKeyChords(a.a, ""); err == nil {
+					for _, chord := range chords {
+						if _, prs := triggering[chord]; prs {
+							// Avoid recursive triggering
+							continue
+						}
+						if acts, prs := t.keymap[chord]; prs {
+							triggering[chord] = struct{}{}
+							doActions(acts)
+							delete(triggering, chord)
+						}
+					}
+				}
 			case actSigStop:
 				p, err := os.FindProcess(os.Getpid())
 				if err == nil {
@@ -6555,13 +6572,13 @@ func (t *Terminal) Loop() error {
 					t.reading = true
 				}
 			case actUnbind:
-				if keys, err := parseKeyChords(a.a, "PANIC"); err == nil {
+				if keys, _, err := parseKeyChords(a.a, "PANIC"); err == nil {
 					for key := range keys {
 						delete(t.keymap, key)
 					}
 				}
 			case actRebind:
-				if keys, err := parseKeyChords(a.a, "PANIC"); err == nil {
+				if keys, _, err := parseKeyChords(a.a, "PANIC"); err == nil {
 					for key := range keys {
 						if originalAction, found := t.keymapOrg[key]; found {
 							t.keymap[key] = originalAction
@@ -6569,7 +6586,7 @@ func (t *Terminal) Loop() error {
 					}
 				}
 			case actToggleBind:
-				if keys, err := parseKeyChords(a.a, "PANIC"); err == nil {
+				if keys, _, err := parseKeyChords(a.a, "PANIC"); err == nil {
 					for key := range keys {
 						if _, bound := t.keymap[key]; bound {
 							delete(t.keymap, key)

test/test_core.rb

@@ -2035,4 +2035,14 @@ class TestCore < TestInteractive
       assert_equal 19, it.select_count
     end
   end
+
+  def test_trigger
+    tmux.send_keys %(seq 100 | #{FZF} --bind 'a:up+trigger(a),b:trigger(a,a,b,a)'), :Enter
+    tmux.until { assert_equal 100, it.match_count }
+    tmux.until { |lines| assert_includes lines, '> 1' }
+    tmux.send_keys :a
+    tmux.until { |lines| assert_includes lines, '> 3' }
+    tmux.send_keys :b
+    tmux.until { |lines| assert_includes lines, '> 9' }
+  end
 end