Add change-info-command and transform variants

- change-info-command, transform-info-command, bg-transform-info-command
- change-info-command disallowed from remote --listen like change-preview

Close #4951

CHANGELOG.md

@@ -1,8 +1,14 @@
 CHANGELOG
 =========
 
-0.74.6
+0.75.0
 ------
+- Added `{change,transform,bg-transform}-info-command` actions (#4951) (@casperdcl)
+  ```sh
+  seq 100 | fzf --info-command 'echo "mode: A | $FZF_INFO"' \
+                --bind 'ctrl-a:change-info-command:echo "mode: A | $FZF_INFO"' \
+                --bind 'ctrl-b:change-info-command:echo "mode: B | $FZF_INFO"'
+  ```
 - Fixed `--with-shell` on Windows not detecting cmd, PowerShell, and pwsh, which made fzf quote commands and entries for a POSIX shell (#4936) (@vimkim)
     - e.g. With `--with-shell "cmd.exe /d /c"`, `--preview '"C:\Program Files\nu\bin\nu.exe" --version'` failed
 - `transform-nth` and `transform-with-nth` (and their `bg-` variants) no longer split the output at `|`

man/man1/fzf.1

@@ -2056,6 +2056,7 @@ A key or an event can be bound to one or more of the following actions.
     \fBchange\-header(...)\fR           (change header to the given string; doesn't affect \fB\-\-header\-lines\fR)
     \fBchange\-header\-lines(N)\fR       (change the number of \fB\-\-header\-lines\fR)
     \fBchange\-header\-label(...)\fR     (change \fB\-\-header\-label\fR to the given string)
+    \fBchange\-info\-command(...)\fR     (change \fB\-\-info\-command\fR option)
     \fBchange\-input\-label(...)\fR      (change \fB\-\-input\-label\fR to the given string)
     \fBchange\-list\-label(...)\fR       (change \fB\-\-list\-label\fR to the given string)
     \fBchange\-multi\fR                 (enable multi-select mode with no limit)
@@ -2164,6 +2165,7 @@ A key or an event can be bound to one or more of the following actions.
     \fBtransform\-header(...)\fR        (transform header using an external command)
     \fBtransform\-header\-lines(...)\fR  (transform the number of \fB\-\-header\-lines\fR using an external command)
     \fBtransform\-header\-label(...)\fR  (transform header label using an external command)
+    \fBtransform\-info\-command(...)\fR  (transform \fB\-\-info\-command\fR using an external command)
     \fBtransform\-input\-label(...)\fR   (transform input label using an external command)
     \fBtransform\-list\-label(...)\fR    (transform list label using an external command)
     \fBtransform\-nth(...)\fR           (transform nth using an external command; see CHANGE NTH AND WITH\-NTH)

src/actiontype_string.go

@@ -34,168 +34,172 @@ func _() {
 	_ = x[actChangeFooter-23]
 	_ = x[actChangeHeaderLabel-24]
 	_ = x[actChangeFooterLabel-25]
-	_ = x[actChangeInputLabel-26]
-	_ = x[actChangeListLabel-27]
-	_ = x[actChangeMulti-28]
-	_ = x[actChangeNth-29]
-	_ = x[actChangeWithNth-30]
-	_ = x[actChangePointer-31]
-	_ = x[actChangePreview-32]
-	_ = x[actChangePreviewLabel-33]
-	_ = x[actChangePreviewWindow-34]
-	_ = x[actChangePrompt-35]
-	_ = x[actChangeQuery-36]
-	_ = x[actClearScreen-37]
-	_ = x[actClearQuery-38]
-	_ = x[actClearSelection-39]
-	_ = x[actClose-40]
-	_ = x[actDeleteChar-41]
-	_ = x[actDeleteCharEof-42]
-	_ = x[actEndOfLine-43]
-	_ = x[actFatal-44]
-	_ = x[actForwardChar-45]
-	_ = x[actForwardWord-46]
-	_ = x[actForwardSubWord-47]
-	_ = x[actKillLine-48]
-	_ = x[actKillWord-49]
-	_ = x[actKillSubWord-50]
-	_ = x[actUnixLineDiscard-51]
-	_ = x[actUnixWordRubout-52]
-	_ = x[actYank-53]
-	_ = x[actBackwardKillWord-54]
-	_ = x[actBackwardKillSubWord-55]
-	_ = x[actSelectAll-56]
-	_ = x[actDeselectAll-57]
-	_ = x[actToggle-58]
-	_ = x[actToggleSearch-59]
-	_ = x[actToggleAll-60]
-	_ = x[actToggleDown-61]
-	_ = x[actToggleUp-62]
-	_ = x[actToggleIn-63]
-	_ = x[actToggleOut-64]
-	_ = x[actToggleTrack-65]
-	_ = x[actToggleTrackCurrent-66]
-	_ = x[actToggleHeader-67]
-	_ = x[actToggleWrap-68]
-	_ = x[actToggleWrapWord-69]
-	_ = x[actToggleMultiLine-70]
-	_ = x[actToggleHscroll-71]
-	_ = x[actToggleRaw-72]
-	_ = x[actEnableRaw-73]
-	_ = x[actDisableRaw-74]
-	_ = x[actTrackCurrent-75]
-	_ = x[actToggleInput-76]
-	_ = x[actHideInput-77]
-	_ = x[actShowInput-78]
-	_ = x[actUntrackCurrent-79]
-	_ = x[actDown-80]
-	_ = x[actDownMatch-81]
-	_ = x[actUp-82]
-	_ = x[actUpMatch-83]
-	_ = x[actPageUp-84]
-	_ = x[actPageDown-85]
-	_ = x[actPosition-86]
-	_ = x[actHalfPageUp-87]
-	_ = x[actHalfPageDown-88]
-	_ = x[actOffsetUp-89]
-	_ = x[actOffsetDown-90]
-	_ = x[actOffsetMiddle-91]
-	_ = x[actJump-92]
-	_ = x[actJumpAccept-93]
-	_ = x[actPrintQuery-94]
-	_ = x[actRefreshPreview-95]
-	_ = x[actReplaceQuery-96]
-	_ = x[actToggleSort-97]
-	_ = x[actShowPreview-98]
-	_ = x[actHidePreview-99]
-	_ = x[actTogglePreview-100]
-	_ = x[actTogglePreviewWrap-101]
-	_ = x[actTogglePreviewWrapWord-102]
-	_ = x[actTransform-103]
-	_ = x[actTransformBorderLabel-104]
-	_ = x[actTransformGhost-105]
-	_ = x[actTransformHeader-106]
-	_ = x[actTransformHeaderLines-107]
-	_ = x[actTransformFooter-108]
-	_ = x[actTransformHeaderLabel-109]
-	_ = x[actTransformFooterLabel-110]
-	_ = x[actTransformInputLabel-111]
-	_ = x[actTransformListLabel-112]
-	_ = x[actTransformNth-113]
-	_ = x[actTransformWithNth-114]
-	_ = x[actTransformPointer-115]
-	_ = x[actTransformPreviewLabel-116]
-	_ = x[actTransformPrompt-117]
-	_ = x[actTransformQuery-118]
-	_ = x[actTransformSearch-119]
-	_ = x[actTrigger-120]
-	_ = x[actBgTransform-121]
-	_ = x[actBgTransformBorderLabel-122]
-	_ = x[actBgTransformGhost-123]
-	_ = x[actBgTransformHeader-124]
-	_ = x[actBgTransformHeaderLines-125]
-	_ = x[actBgTransformFooter-126]
-	_ = x[actBgTransformHeaderLabel-127]
-	_ = x[actBgTransformFooterLabel-128]
-	_ = x[actBgTransformInputLabel-129]
-	_ = x[actBgTransformListLabel-130]
-	_ = x[actBgTransformNth-131]
-	_ = x[actBgTransformWithNth-132]
-	_ = x[actBgTransformPointer-133]
-	_ = x[actBgTransformPreviewLabel-134]
-	_ = x[actBgTransformPrompt-135]
-	_ = x[actBgTransformQuery-136]
-	_ = x[actBgTransformSearch-137]
-	_ = x[actBgCancel-138]
-	_ = x[actSearch-139]
-	_ = x[actPreview-140]
-	_ = x[actPreviewTop-141]
-	_ = x[actPreviewBottom-142]
-	_ = x[actPreviewUp-143]
-	_ = x[actPreviewDown-144]
-	_ = x[actPreviewPageUp-145]
-	_ = x[actPreviewPageDown-146]
-	_ = x[actPreviewHalfPageUp-147]
-	_ = x[actPreviewHalfPageDown-148]
-	_ = x[actPrevHistory-149]
-	_ = x[actPrevSelected-150]
-	_ = x[actPrint-151]
-	_ = x[actPut-152]
-	_ = x[actNextHistory-153]
-	_ = x[actNextSelected-154]
-	_ = x[actExecute-155]
-	_ = x[actExecuteSilent-156]
-	_ = x[actExecuteMulti-157]
-	_ = x[actSigStop-158]
-	_ = x[actBest-159]
-	_ = x[actFirst-160]
-	_ = x[actLast-161]
-	_ = x[actReload-162]
-	_ = x[actReloadSync-163]
-	_ = x[actDisableSearch-164]
-	_ = x[actEnableSearch-165]
-	_ = x[actSelect-166]
-	_ = x[actDeselect-167]
-	_ = x[actUnbind-168]
-	_ = x[actRebind-169]
-	_ = x[actToggleBind-170]
-	_ = x[actBecome-171]
-	_ = x[actShowHeader-172]
-	_ = x[actHideHeader-173]
-	_ = x[actBell-174]
-	_ = x[actExclude-175]
-	_ = x[actExcludeMulti-176]
-	_ = x[actAsync-177]
-	_ = x[actWait-178]
+	_ = x[actChangeInfoCommand-26]
+	_ = x[actChangeInputLabel-27]
+	_ = x[actChangeListLabel-28]
+	_ = x[actChangeMulti-29]
+	_ = x[actChangeNth-30]
+	_ = x[actChangeWithNth-31]
+	_ = x[actChangePointer-32]
+	_ = x[actChangePreview-33]
+	_ = x[actChangePreviewLabel-34]
+	_ = x[actChangePreviewWindow-35]
+	_ = x[actChangePrompt-36]
+	_ = x[actChangeQuery-37]
+	_ = x[actClearScreen-38]
+	_ = x[actClearQuery-39]
+	_ = x[actClearSelection-40]
+	_ = x[actClose-41]
+	_ = x[actDeleteChar-42]
+	_ = x[actDeleteCharEof-43]
+	_ = x[actEndOfLine-44]
+	_ = x[actFatal-45]
+	_ = x[actForwardChar-46]
+	_ = x[actForwardWord-47]
+	_ = x[actForwardSubWord-48]
+	_ = x[actKillLine-49]
+	_ = x[actKillWord-50]
+	_ = x[actKillSubWord-51]
+	_ = x[actUnixLineDiscard-52]
+	_ = x[actUnixWordRubout-53]
+	_ = x[actYank-54]
+	_ = x[actBackwardKillWord-55]
+	_ = x[actBackwardKillSubWord-56]
+	_ = x[actSelectAll-57]
+	_ = x[actDeselectAll-58]
+	_ = x[actToggle-59]
+	_ = x[actToggleSearch-60]
+	_ = x[actToggleAll-61]
+	_ = x[actToggleDown-62]
+	_ = x[actToggleUp-63]
+	_ = x[actToggleIn-64]
+	_ = x[actToggleOut-65]
+	_ = x[actToggleTrack-66]
+	_ = x[actToggleTrackCurrent-67]
+	_ = x[actToggleHeader-68]
+	_ = x[actToggleWrap-69]
+	_ = x[actToggleWrapWord-70]
+	_ = x[actToggleMultiLine-71]
+	_ = x[actToggleHscroll-72]
+	_ = x[actToggleRaw-73]
+	_ = x[actEnableRaw-74]
+	_ = x[actDisableRaw-75]
+	_ = x[actTrackCurrent-76]
+	_ = x[actToggleInput-77]
+	_ = x[actHideInput-78]
+	_ = x[actShowInput-79]
+	_ = x[actUntrackCurrent-80]
+	_ = x[actDown-81]
+	_ = x[actDownMatch-82]
+	_ = x[actUp-83]
+	_ = x[actUpMatch-84]
+	_ = x[actPageUp-85]
+	_ = x[actPageDown-86]
+	_ = x[actPosition-87]
+	_ = x[actHalfPageUp-88]
+	_ = x[actHalfPageDown-89]
+	_ = x[actOffsetUp-90]
+	_ = x[actOffsetDown-91]
+	_ = x[actOffsetMiddle-92]
+	_ = x[actJump-93]
+	_ = x[actJumpAccept-94]
+	_ = x[actPrintQuery-95]
+	_ = x[actRefreshPreview-96]
+	_ = x[actReplaceQuery-97]
+	_ = x[actToggleSort-98]
+	_ = x[actShowPreview-99]
+	_ = x[actHidePreview-100]
+	_ = x[actTogglePreview-101]
+	_ = x[actTogglePreviewWrap-102]
+	_ = x[actTogglePreviewWrapWord-103]
+	_ = x[actTransform-104]
+	_ = x[actTransformBorderLabel-105]
+	_ = x[actTransformGhost-106]
+	_ = x[actTransformHeader-107]
+	_ = x[actTransformHeaderLines-108]
+	_ = x[actTransformFooter-109]
+	_ = x[actTransformHeaderLabel-110]
+	_ = x[actTransformFooterLabel-111]
+	_ = x[actTransformInfoCommand-112]
+	_ = x[actTransformInputLabel-113]
+	_ = x[actTransformListLabel-114]
+	_ = x[actTransformNth-115]
+	_ = x[actTransformWithNth-116]
+	_ = x[actTransformPointer-117]
+	_ = x[actTransformPreviewLabel-118]
+	_ = x[actTransformPrompt-119]
+	_ = x[actTransformQuery-120]
+	_ = x[actTransformSearch-121]
+	_ = x[actTrigger-122]
+	_ = x[actBgTransform-123]
+	_ = x[actBgTransformBorderLabel-124]
+	_ = x[actBgTransformGhost-125]
+	_ = x[actBgTransformHeader-126]
+	_ = x[actBgTransformHeaderLines-127]
+	_ = x[actBgTransformFooter-128]
+	_ = x[actBgTransformHeaderLabel-129]
+	_ = x[actBgTransformFooterLabel-130]
+	_ = x[actBgTransformInfoCommand-131]
+	_ = x[actBgTransformInputLabel-132]
+	_ = x[actBgTransformListLabel-133]
+	_ = x[actBgTransformNth-134]
+	_ = x[actBgTransformWithNth-135]
+	_ = x[actBgTransformPointer-136]
+	_ = x[actBgTransformPreviewLabel-137]
+	_ = x[actBgTransformPrompt-138]
+	_ = x[actBgTransformQuery-139]
+	_ = x[actBgTransformSearch-140]
+	_ = x[actBgCancel-141]
+	_ = x[actSearch-142]
+	_ = x[actPreview-143]
+	_ = x[actPreviewTop-144]
+	_ = x[actPreviewBottom-145]
+	_ = x[actPreviewUp-146]
+	_ = x[actPreviewDown-147]
+	_ = x[actPreviewPageUp-148]
+	_ = x[actPreviewPageDown-149]
+	_ = x[actPreviewHalfPageUp-150]
+	_ = x[actPreviewHalfPageDown-151]
+	_ = x[actPrevHistory-152]
+	_ = x[actPrevSelected-153]
+	_ = x[actPrint-154]
+	_ = x[actPut-155]
+	_ = x[actNextHistory-156]
+	_ = x[actNextSelected-157]
+	_ = x[actExecute-158]
+	_ = x[actExecuteSilent-159]
+	_ = x[actExecuteMulti-160]
+	_ = x[actSigStop-161]
+	_ = x[actBest-162]
+	_ = x[actFirst-163]
+	_ = x[actLast-164]
+	_ = x[actReload-165]
+	_ = x[actReloadSync-166]
+	_ = x[actDisableSearch-167]
+	_ = x[actEnableSearch-168]
+	_ = x[actSelect-169]
+	_ = x[actDeselect-170]
+	_ = x[actUnbind-171]
+	_ = x[actRebind-172]
+	_ = x[actToggleBind-173]
+	_ = x[actBecome-174]
+	_ = x[actShowHeader-175]
+	_ = x[actHideHeader-176]
+	_ = x[actBell-177]
+	_ = x[actExclude-178]
+	_ = x[actExcludeMulti-179]
+	_ = x[actAsync-180]
+	_ = x[actWait-181]
 }
 
-const _actionType_name = "actIgnoreactStartactClickactInvalidactBracketedPasteBeginactBracketedPasteEndactCharactMouseactBeginningOfLineactAbortactAcceptactAcceptNonEmptyactAcceptOrPrintQueryactBackwardCharactBackwardDeleteCharactBackwardDeleteCharEofactBackwardWordactBackwardSubWordactCancelactChangeBorderLabelactChangeGhostactChangeHeaderactChangeHeaderLinesactChangeFooteractChangeHeaderLabelactChangeFooterLabelactChangeInputLabelactChangeListLabelactChangeMultiactChangeNthactChangeWithNthactChangePointeractChangePreviewactChangePreviewLabelactChangePreviewWindowactChangePromptactChangeQueryactClearScreenactClearQueryactClearSelectionactCloseactDeleteCharactDeleteCharEofactEndOfLineactFatalactForwardCharactForwardWordactForwardSubWordactKillLineactKillWordactKillSubWordactUnixLineDiscardactUnixWordRuboutactYankactBackwardKillWordactBackwardKillSubWordactSelectAllactDeselectAllactToggleactToggleSearchactToggleAllactToggleDownactToggleUpactToggleInactToggleOutactToggleTrackactToggleTrackCurrentactToggleHeaderactToggleWrapactToggleWrapWordactToggleMultiLineactToggleHscrollactToggleRawactEnableRawactDisableRawactTrackCurrentactToggleInputactHideInputactShowInputactUntrackCurrentactDownactDownMatchactUpactUpMatchactPageUpactPageDownactPositionactHalfPageUpactHalfPageDownactOffsetUpactOffsetDownactOffsetMiddleactJumpactJumpAcceptactPrintQueryactRefreshPreviewactReplaceQueryactToggleSortactShowPreviewactHidePreviewactTogglePreviewactTogglePreviewWrapactTogglePreviewWrapWordactTransformactTransformBorderLabelactTransformGhostactTransformHeaderactTransformHeaderLinesactTransformFooteractTransformHeaderLabelactTransformFooterLabelactTransformInputLabelactTransformListLabelactTransformNthactTransformWithNthactTransformPointeractTransformPreviewLabelactTransformPromptactTransformQueryactTransformSearchactTriggeractBgTransformactBgTransformBorderLabelactBgTransformGhostactBgTransformHeaderactBgTransformHeaderLinesactBgTransformFooteractBgTransformHeaderLabelactBgTransformFooterLabelactBgTransformInputLabelactBgTransformListLabelactBgTransformNthactBgTransformWithNthactBgTransformPointeractBgTransformPreviewLabelactBgTransformPromptactBgTransformQueryactBgTransformSearchactBgCancelactSearchactPreviewactPreviewTopactPreviewBottomactPreviewUpactPreviewDownactPreviewPageUpactPreviewPageDownactPreviewHalfPageUpactPreviewHalfPageDownactPrevHistoryactPrevSelectedactPrintactPutactNextHistoryactNextSelectedactExecuteactExecuteSilentactExecuteMultiactSigStopactBestactFirstactLastactReloadactReloadSyncactDisableSearchactEnableSearchactSelectactDeselectactUnbindactRebindactToggleBindactBecomeactShowHeaderactHideHeaderactBellactExcludeactExcludeMultiactAsyncactWait"
+const _actionType_name = "actIgnoreactStartactClickactInvalidactBracketedPasteBeginactBracketedPasteEndactCharactMouseactBeginningOfLineactAbortactAcceptactAcceptNonEmptyactAcceptOrPrintQueryactBackwardCharactBackwardDeleteCharactBackwardDeleteCharEofactBackwardWordactBackwardSubWordactCancelactChangeBorderLabelactChangeGhostactChangeHeaderactChangeHeaderLinesactChangeFooteractChangeHeaderLabelactChangeFooterLabelactChangeInfoCommandactChangeInputLabelactChangeListLabelactChangeMultiactChangeNthactChangeWithNthactChangePointeractChangePreviewactChangePreviewLabelactChangePreviewWindowactChangePromptactChangeQueryactClearScreenactClearQueryactClearSelectionactCloseactDeleteCharactDeleteCharEofactEndOfLineactFatalactForwardCharactForwardWordactForwardSubWordactKillLineactKillWordactKillSubWordactUnixLineDiscardactUnixWordRuboutactYankactBackwardKillWordactBackwardKillSubWordactSelectAllactDeselectAllactToggleactToggleSearchactToggleAllactToggleDownactToggleUpactToggleInactToggleOutactToggleTrackactToggleTrackCurrentactToggleHeaderactToggleWrapactToggleWrapWordactToggleMultiLineactToggleHscrollactToggleRawactEnableRawactDisableRawactTrackCurrentactToggleInputactHideInputactShowInputactUntrackCurrentactDownactDownMatchactUpactUpMatchactPageUpactPageDownactPositionactHalfPageUpactHalfPageDownactOffsetUpactOffsetDownactOffsetMiddleactJumpactJumpAcceptactPrintQueryactRefreshPreviewactReplaceQueryactToggleSortactShowPreviewactHidePreviewactTogglePreviewactTogglePreviewWrapactTogglePreviewWrapWordactTransformactTransformBorderLabelactTransformGhostactTransformHeaderactTransformHeaderLinesactTransformFooteractTransformHeaderLabelactTransformFooterLabelactTransformInfoCommandactTransformInputLabelactTransformListLabelactTransformNthactTransformWithNthactTransformPointeractTransformPreviewLabelactTransformPromptactTransformQueryactTransformSearchactTriggeractBgTransformactBgTransformBorderLabelactBgTransformGhostactBgTransformHeaderactBgTransformHeaderLinesactBgTransformFooteractBgTransformHeaderLabelactBgTransformFooterLabelactBgTransformInfoCommandactBgTransformInputLabelactBgTransformListLabelactBgTransformNthactBgTransformWithNthactBgTransformPointeractBgTransformPreviewLabelactBgTransformPromptactBgTransformQueryactBgTransformSearchactBgCancelactSearchactPreviewactPreviewTopactPreviewBottomactPreviewUpactPreviewDownactPreviewPageUpactPreviewPageDownactPreviewHalfPageUpactPreviewHalfPageDownactPrevHistoryactPrevSelectedactPrintactPutactNextHistoryactNextSelectedactExecuteactExecuteSilentactExecuteMultiactSigStopactBestactFirstactLastactReloadactReloadSyncactDisableSearchactEnableSearchactSelectactDeselectactUnbindactRebindactToggleBindactBecomeactShowHeaderactHideHeaderactBellactExcludeactExcludeMultiactAsyncactWait"
 
-var _actionType_index = [...]uint16{0, 9, 17, 25, 35, 57, 77, 84, 92, 110, 118, 127, 144, 165, 180, 201, 225, 240, 258, 267, 287, 301, 316, 336, 351, 371, 391, 410, 428, 442, 454, 470, 486, 502, 523, 545, 560, 574, 588, 601, 618, 626, 639, 655, 667, 675, 689, 703, 720, 731, 742, 756, 774, 791, 798, 817, 839, 851, 865, 874, 889, 901, 914, 925, 936, 948, 962, 983, 998, 1011, 1028, 1046, 1062, 1074, 1086, 1099, 1114, 1128, 1140, 1152, 1169, 1176, 1188, 1193, 1203, 1212, 1223, 1234, 1247, 1262, 1273, 1286, 1301, 1308, 1321, 1334, 1351, 1366, 1379, 1393, 1407, 1423, 1443, 1467, 1479, 1502, 1519, 1537, 1560, 1578, 1601, 1624, 1646, 1667, 1682, 1701, 1720, 1744, 1762, 1779, 1797, 1807, 1821, 1846, 1865, 1885, 1910, 1930, 1955, 1980, 2004, 2027, 2044, 2065, 2086, 2112, 2132, 2151, 2171, 2182, 2191, 2201, 2214, 2230, 2242, 2256, 2272, 2290, 2310, 2332, 2346, 2361, 2369, 2375, 2389, 2404, 2414, 2430, 2445, 2455, 2462, 2470, 2477, 2486, 2499, 2515, 2530, 2539, 2550, 2559, 2568, 2581, 2590, 2603, 2616, 2623, 2633, 2648, 2656, 2663}
+var _actionType_index = [...]uint16{0, 9, 17, 25, 35, 57, 77, 84, 92, 110, 118, 127, 144, 165, 180, 201, 225, 240, 258, 267, 287, 301, 316, 336, 351, 371, 391, 411, 430, 448, 462, 474, 490, 506, 522, 543, 565, 580, 594, 608, 621, 638, 646, 659, 675, 687, 695, 709, 723, 740, 751, 762, 776, 794, 811, 818, 837, 859, 871, 885, 894, 909, 921, 934, 945, 956, 968, 982, 1003, 1018, 1031, 1048, 1066, 1082, 1094, 1106, 1119, 1134, 1148, 1160, 1172, 1189, 1196, 1208, 1213, 1223, 1232, 1243, 1254, 1267, 1282, 1293, 1306, 1321, 1328, 1341, 1354, 1371, 1386, 1399, 1413, 1427, 1443, 1463, 1487, 1499, 1522, 1539, 1557, 1580, 1598, 1621, 1644, 1667, 1689, 1710, 1725, 1744, 1763, 1787, 1805, 1822, 1840, 1850, 1864, 1889, 1908, 1928, 1953, 1973, 1998, 2023, 2048, 2072, 2095, 2112, 2133, 2154, 2180, 2200, 2219, 2239, 2250, 2259, 2269, 2282, 2298, 2310, 2324, 2340, 2358, 2378, 2400, 2414, 2429, 2437, 2443, 2457, 2472, 2482, 2498, 2513, 2523, 2530, 2538, 2545, 2554, 2567, 2583, 2598, 2607, 2618, 2627, 2636, 2649, 2658, 2671, 2684, 2691, 2701, 2716, 2724, 2731}
 
 func (i actionType) String() string {
-	if i < 0 || i >= actionType(len(_actionType_index)-1) {
+	idx := int(i) - 0
+	if i < 0 || idx >= len(_actionType_index)-1 {
 		return "actionType(" + strconv.FormatInt(int64(i), 10) + ")"
 	}
-	return _actionType_name[_actionType_index[i]:_actionType_index[i+1]]
+	return _actionType_name[_actionType_index[idx]:_actionType_index[idx+1]]
 }

src/options.go

@@ -1672,7 +1672,7 @@ const (
 
 func init() {
 	argActionRegexp = regexp.MustCompile(
-		`(?si)[:+](become|execute(?:-multi|-silent)?|reload(?:-sync)?|preview|(?:change|bg-transform|transform)-(?:query|prompt|(?:border|list|preview|input|header|footer)-label|header-lines|header|footer|search|with-nth|nth|pointer|ghost)|bg-transform|transform|change-(?:preview-window|preview|multi)|(?:re|un|toggle-)bind|pos|put|print|search|trigger)`)
+		`(?si)[:+](become|execute(?:-multi|-silent)?|reload(?:-sync)?|preview|(?:change|bg-transform|transform)-(?:query|prompt|(?:border|list|preview|input|header|footer)-label|header-lines|header|footer|search|with-nth|nth|pointer|ghost|info-command)|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-]+")
 }
@@ -2101,6 +2101,8 @@ func isExecuteAction(str string) actionType {
 		return actChangeHeaderLabel
 	case "change-footer-label":
 		return actChangeFooterLabel
+	case "change-info-command":
+		return actChangeInfoCommand
 	case "change-ghost":
 		return actChangeGhost
 	case "change-pointer":
@@ -2145,6 +2147,8 @@ func isExecuteAction(str string) actionType {
 		return actTransformHeaderLabel
 	case "transform-footer-label":
 		return actTransformFooterLabel
+	case "transform-info-command":
+		return actTransformInfoCommand
 	case "transform-footer":
 		return actTransformFooter
 	case "transform-header":
@@ -2179,6 +2183,8 @@ func isExecuteAction(str string) actionType {
 		return actBgTransformHeaderLabel
 	case "bg-transform-footer-label":
 		return actBgTransformFooterLabel
+	case "bg-transform-info-command":
+		return actBgTransformInfoCommand
 	case "bg-transform-footer":
 		return actBgTransformFooter
 	case "bg-transform-header":

src/terminal.go

@@ -589,6 +589,7 @@ const (
 	actChangeFooter
 	actChangeHeaderLabel
 	actChangeFooterLabel
+	actChangeInfoCommand
 	actChangeInputLabel
 	actChangeListLabel
 	actChangeMulti
@@ -676,6 +677,7 @@ const (
 	actTransformFooter
 	actTransformHeaderLabel
 	actTransformFooterLabel
+	actTransformInfoCommand
 	actTransformInputLabel
 	actTransformListLabel
 	actTransformNth
@@ -696,6 +698,7 @@ const (
 	actBgTransformFooter
 	actBgTransformHeaderLabel
 	actBgTransformFooterLabel
+	actBgTransformInfoCommand
 	actBgTransformInputLabel
 	actBgTransformListLabel
 	actBgTransformNth
@@ -764,6 +767,7 @@ func processExecution(action actionType) bool {
 		actTransformFooter,
 		actTransformHeaderLabel,
 		actTransformFooterLabel,
+		actTransformInfoCommand,
 		actTransformInputLabel,
 		actTransformListLabel,
 		actTransformNth,
@@ -781,6 +785,7 @@ func processExecution(action actionType) bool {
 		actBgTransformFooter,
 		actBgTransformHeaderLabel,
 		actBgTransformFooterLabel,
+		actBgTransformInfoCommand,
 		actBgTransformInputLabel,
 		actBgTransformListLabel,
 		actBgTransformNth,
@@ -792,6 +797,7 @@ func processExecution(action actionType) bool {
 		actBgTransformSearch,
 		actPreview,
 		actChangePreview,
+		actChangeInfoCommand,
 		actRefreshPreview,
 		actExecute,
 		actExecuteSilent,
@@ -7447,6 +7453,13 @@ func (t *Terminal) Loop() error {
 					t.footerLabel, t.footerLabelLen = t.ansiLabelPrinter(label, &tui.ColFooterLabel, false)
 					req(reqRedrawFooterLabel)
 				})
+			case actChangeInfoCommand, actTransformInfoCommand, actBgTransformInfoCommand:
+				capture(true, func(command string) {
+					if t.infoCommand != command {
+						t.infoCommand = command
+						req(reqInfo)
+					}
+				})
 			case actChangeInputLabel, actTransformInputLabel, actBgTransformInputLabel:
 				capture(true, func(label string) {
 					t.inputLabelOpts.label = label

test/test_core.rb

@@ -1826,6 +1826,36 @@ class TestCore < TestInteractive
     tmux.until { assert_match(/^  2 xx/, it[-2]) }
   end
 
+  def test_change_info_command
+    tmux.send_keys(%(seq 100 | #{FZF} --separator x --bind 'a:change-info-command(echo {}: $FZF_INFO)' --bind 'b:change-info-command()'), :Enter)
+    tmux.until { assert_match(%r{^  100/100 xx}, it[-2]) }
+    tmux.send_keys :a
+    tmux.until { assert_match(%r{^  1: 100/100 xx}, it[-2]) }
+    # Placeholders are evaluated on each update, not when the action runs
+    tmux.send_keys :Up
+    tmux.until { assert_match(%r{^  2: 100/100 xx}, it[-2]) }
+    tmux.send_keys :b
+    tmux.until { assert_match(%r{^  100/100 xx}, it[-2]) }
+  end
+
+  def test_transform_info_command
+    tmux.send_keys(%(seq 100 | #{FZF} --separator x --bind 'a:transform-info-command(echo "echo {}: \\$FZF_POS")'), :Enter)
+    tmux.until { assert_match(%r{^  100/100 xx}, it[-2]) }
+    tmux.send_keys :a
+    tmux.until { assert_match(%r{^  1: 1 xx}, it[-2]) }
+    tmux.send_keys :Up
+    tmux.until { assert_match(%r{^  1: 2 xx}, it[-2]) }
+  end
+
+  def test_bg_transform_info_command
+    tmux.send_keys(%(seq 100 | #{FZF} --separator x --bind 'a:bg-transform-info-command(sleep 0.5; echo "echo {}: \\$FZF_POS")'), :Enter)
+    tmux.until { assert_match(%r{^  100/100 xx}, it[-2]) }
+    tmux.send_keys :a
+    tmux.until { assert_match(%r{^  1: 1 xx}, it[-2]) }
+    tmux.send_keys :Up
+    tmux.until { assert_match(%r{^  1: 2 xx}, it[-2]) }
+  end
+
   def test_prev_next_selected
     tmux.send_keys 'seq 10 | fzf --multi --bind ctrl-n:next-selected,ctrl-p:prev-selected', :Enter
     tmux.until { |lines| assert_equal 10, lines.match_count }