Add change-ghost and transform-ghost

3 files changed, 145 insertions, 128 deletions

diff --git a/src/actiontype_string.go b/src/actiontype_string.go
index 19b5ea72..8b78008f 100644
--- a/src/actiontype_string.go
+++ b/src/actiontype_string.go
@@ -27,128 +27,130 @@ func _() {
 	_ = x[actBackwardWord-16]
 	_ = x[actCancel-17]
 	_ = x[actChangeBorderLabel-18]
-	_ = x[actChangeListLabel-19]
-	_ = x[actChangeInputLabel-20]
-	_ = x[actChangeHeader-21]
-	_ = x[actChangeHeaderLabel-22]
-	_ = x[actChangeMulti-23]
-	_ = x[actChangePreviewLabel-24]
-	_ = x[actChangePrompt-25]
-	_ = x[actChangeQuery-26]
-	_ = x[actChangeNth-27]
-	_ = x[actClearScreen-28]
-	_ = x[actClearQuery-29]
-	_ = x[actClearSelection-30]
-	_ = x[actClose-31]
-	_ = x[actDeleteChar-32]
-	_ = x[actDeleteCharEof-33]
-	_ = x[actEndOfLine-34]
-	_ = x[actFatal-35]
-	_ = x[actForwardChar-36]
-	_ = x[actForwardWord-37]
-	_ = x[actKillLine-38]
-	_ = x[actKillWord-39]
-	_ = x[actUnixLineDiscard-40]
-	_ = x[actUnixWordRubout-41]
-	_ = x[actYank-42]
-	_ = x[actBackwardKillWord-43]
-	_ = x[actSelectAll-44]
-	_ = x[actDeselectAll-45]
-	_ = x[actToggle-46]
-	_ = x[actToggleSearch-47]
-	_ = x[actToggleAll-48]
-	_ = x[actToggleDown-49]
-	_ = x[actToggleUp-50]
-	_ = x[actToggleIn-51]
-	_ = x[actToggleOut-52]
-	_ = x[actToggleTrack-53]
-	_ = x[actToggleTrackCurrent-54]
-	_ = x[actToggleHeader-55]
-	_ = x[actToggleWrap-56]
-	_ = x[actToggleMultiLine-57]
-	_ = x[actToggleHscroll-58]
-	_ = x[actTrackCurrent-59]
-	_ = x[actToggleInput-60]
-	_ = x[actHideInput-61]
-	_ = x[actShowInput-62]
-	_ = x[actUntrackCurrent-63]
-	_ = x[actDown-64]
-	_ = x[actUp-65]
-	_ = x[actPageUp-66]
-	_ = x[actPageDown-67]
-	_ = x[actPosition-68]
-	_ = x[actHalfPageUp-69]
-	_ = x[actHalfPageDown-70]
-	_ = x[actOffsetUp-71]
-	_ = x[actOffsetDown-72]
-	_ = x[actOffsetMiddle-73]
-	_ = x[actJump-74]
-	_ = x[actJumpAccept-75]
-	_ = x[actPrintQuery-76]
-	_ = x[actRefreshPreview-77]
-	_ = x[actReplaceQuery-78]
-	_ = x[actToggleSort-79]
-	_ = x[actShowPreview-80]
-	_ = x[actHidePreview-81]
-	_ = x[actTogglePreview-82]
-	_ = x[actTogglePreviewWrap-83]
-	_ = x[actTransform-84]
-	_ = x[actTransformBorderLabel-85]
-	_ = x[actTransformListLabel-86]
-	_ = x[actTransformInputLabel-87]
-	_ = x[actTransformHeader-88]
-	_ = x[actTransformHeaderLabel-89]
-	_ = x[actTransformNth-90]
-	_ = x[actTransformPointer-91]
-	_ = x[actTransformPreviewLabel-92]
-	_ = x[actTransformPrompt-93]
-	_ = x[actTransformQuery-94]
-	_ = x[actTransformSearch-95]
-	_ = x[actSearch-96]
-	_ = x[actPreview-97]
-	_ = x[actChangePointer-98]
-	_ = x[actChangePreview-99]
-	_ = x[actChangePreviewWindow-100]
-	_ = x[actPreviewTop-101]
-	_ = x[actPreviewBottom-102]
-	_ = x[actPreviewUp-103]
-	_ = x[actPreviewDown-104]
-	_ = x[actPreviewPageUp-105]
-	_ = x[actPreviewPageDown-106]
-	_ = x[actPreviewHalfPageUp-107]
-	_ = x[actPreviewHalfPageDown-108]
-	_ = x[actPrevHistory-109]
-	_ = x[actPrevSelected-110]
-	_ = x[actPrint-111]
-	_ = x[actPut-112]
-	_ = x[actNextHistory-113]
-	_ = x[actNextSelected-114]
-	_ = x[actExecute-115]
-	_ = x[actExecuteSilent-116]
-	_ = x[actExecuteMulti-117]
-	_ = x[actSigStop-118]
-	_ = x[actFirst-119]
-	_ = x[actLast-120]
-	_ = x[actReload-121]
-	_ = x[actReloadSync-122]
-	_ = x[actDisableSearch-123]
-	_ = x[actEnableSearch-124]
-	_ = x[actSelect-125]
-	_ = x[actDeselect-126]
-	_ = x[actUnbind-127]
-	_ = x[actRebind-128]
-	_ = x[actToggleBind-129]
-	_ = x[actBecome-130]
-	_ = x[actShowHeader-131]
-	_ = x[actHideHeader-132]
-	_ = x[actBell-133]
-	_ = x[actExclude-134]
-	_ = x[actExcludeMulti-135]
+	_ = x[actChangeGhost-19]
+	_ = x[actChangeHeader-20]
+	_ = x[actChangeHeaderLabel-21]
+	_ = x[actChangeInputLabel-22]
+	_ = x[actChangeListLabel-23]
+	_ = x[actChangeMulti-24]
+	_ = x[actChangeNth-25]
+	_ = x[actChangePointer-26]
+	_ = x[actChangePreview-27]
+	_ = x[actChangePreviewLabel-28]
+	_ = x[actChangePreviewWindow-29]
+	_ = x[actChangePrompt-30]
+	_ = x[actChangeQuery-31]
+	_ = x[actClearScreen-32]
+	_ = x[actClearQuery-33]
+	_ = x[actClearSelection-34]
+	_ = x[actClose-35]
+	_ = x[actDeleteChar-36]
+	_ = x[actDeleteCharEof-37]
+	_ = x[actEndOfLine-38]
+	_ = x[actFatal-39]
+	_ = x[actForwardChar-40]
+	_ = x[actForwardWord-41]
+	_ = x[actKillLine-42]
+	_ = x[actKillWord-43]
+	_ = x[actUnixLineDiscard-44]
+	_ = x[actUnixWordRubout-45]
+	_ = x[actYank-46]
+	_ = x[actBackwardKillWord-47]
+	_ = x[actSelectAll-48]
+	_ = x[actDeselectAll-49]
+	_ = x[actToggle-50]
+	_ = x[actToggleSearch-51]
+	_ = x[actToggleAll-52]
+	_ = x[actToggleDown-53]
+	_ = x[actToggleUp-54]
+	_ = x[actToggleIn-55]
+	_ = x[actToggleOut-56]
+	_ = x[actToggleTrack-57]
+	_ = x[actToggleTrackCurrent-58]
+	_ = x[actToggleHeader-59]
+	_ = x[actToggleWrap-60]
+	_ = x[actToggleMultiLine-61]
+	_ = x[actToggleHscroll-62]
+	_ = x[actTrackCurrent-63]
+	_ = x[actToggleInput-64]
+	_ = x[actHideInput-65]
+	_ = x[actShowInput-66]
+	_ = x[actUntrackCurrent-67]
+	_ = x[actDown-68]
+	_ = x[actUp-69]
+	_ = x[actPageUp-70]
+	_ = x[actPageDown-71]
+	_ = x[actPosition-72]
+	_ = x[actHalfPageUp-73]
+	_ = x[actHalfPageDown-74]
+	_ = x[actOffsetUp-75]
+	_ = x[actOffsetDown-76]
+	_ = x[actOffsetMiddle-77]
+	_ = x[actJump-78]
+	_ = x[actJumpAccept-79]
+	_ = x[actPrintQuery-80]
+	_ = x[actRefreshPreview-81]
+	_ = x[actReplaceQuery-82]
+	_ = x[actToggleSort-83]
+	_ = x[actShowPreview-84]
+	_ = x[actHidePreview-85]
+	_ = x[actTogglePreview-86]
+	_ = x[actTogglePreviewWrap-87]
+	_ = x[actTransform-88]
+	_ = x[actTransformBorderLabel-89]
+	_ = x[actTransformGhost-90]
+	_ = x[actTransformHeader-91]
+	_ = x[actTransformHeaderLabel-92]
+	_ = x[actTransformInputLabel-93]
+	_ = x[actTransformListLabel-94]
+	_ = x[actTransformNth-95]
+	_ = x[actTransformPointer-96]
+	_ = x[actTransformPreviewLabel-97]
+	_ = x[actTransformPrompt-98]
+	_ = x[actTransformQuery-99]
+	_ = x[actTransformSearch-100]
+	_ = x[actSearch-101]
+	_ = x[actPreview-102]
+	_ = x[actPreviewTop-103]
+	_ = x[actPreviewBottom-104]
+	_ = x[actPreviewUp-105]
+	_ = x[actPreviewDown-106]
+	_ = x[actPreviewPageUp-107]
+	_ = x[actPreviewPageDown-108]
+	_ = x[actPreviewHalfPageUp-109]
+	_ = x[actPreviewHalfPageDown-110]
+	_ = x[actPrevHistory-111]
+	_ = x[actPrevSelected-112]
+	_ = x[actPrint-113]
+	_ = x[actPut-114]
+	_ = x[actNextHistory-115]
+	_ = x[actNextSelected-116]
+	_ = x[actExecute-117]
+	_ = x[actExecuteSilent-118]
+	_ = x[actExecuteMulti-119]
+	_ = x[actSigStop-120]
+	_ = x[actFirst-121]
+	_ = x[actLast-122]
+	_ = x[actReload-123]
+	_ = x[actReloadSync-124]
+	_ = x[actDisableSearch-125]
+	_ = x[actEnableSearch-126]
+	_ = x[actSelect-127]
+	_ = x[actDeselect-128]
+	_ = x[actUnbind-129]
+	_ = x[actRebind-130]
+	_ = x[actToggleBind-131]
+	_ = x[actBecome-132]
+	_ = x[actShowHeader-133]
+	_ = x[actHideHeader-134]
+	_ = x[actBell-135]
+	_ = x[actExclude-136]
+	_ = x[actExcludeMulti-137]
 }
 
-const _actionType_name = "actIgnoreactStartactClickactInvalidactBracketedPasteBeginactBracketedPasteEndactCharactMouseactBeginningOfLineactAbortactAcceptactAcceptNonEmptyactAcceptOrPrintQueryactBackwardCharactBackwardDeleteCharactBackwardDeleteCharEofactBackwardWordactCancelactChangeBorderLabelactChangeListLabelactChangeInputLabelactChangeHeaderactChangeHeaderLabelactChangeMultiactChangePreviewLabelactChangePromptactChangeQueryactChangeNthactClearScreenactClearQueryactClearSelectionactCloseactDeleteCharactDeleteCharEofactEndOfLineactFatalactForwardCharactForwardWordactKillLineactKillWordactUnixLineDiscardactUnixWordRuboutactYankactBackwardKillWordactSelectAllactDeselectAllactToggleactToggleSearchactToggleAllactToggleDownactToggleUpactToggleInactToggleOutactToggleTrackactToggleTrackCurrentactToggleHeaderactToggleWrapactToggleMultiLineactToggleHscrollactTrackCurrentactToggleInputactHideInputactShowInputactUntrackCurrentactDownactUpactPageUpactPageDownactPositionactHalfPageUpactHalfPageDownactOffsetUpactOffsetDownactOffsetMiddleactJumpactJumpAcceptactPrintQueryactRefreshPreviewactReplaceQueryactToggleSortactShowPreviewactHidePreviewactTogglePreviewactTogglePreviewWrapactTransformactTransformBorderLabelactTransformListLabelactTransformInputLabelactTransformHeaderactTransformHeaderLabelactTransformNthactTransformPointeractTransformPreviewLabelactTransformPromptactTransformQueryactTransformSearchactSearchactPreviewactChangePointeractChangePreviewactChangePreviewWindowactPreviewTopactPreviewBottomactPreviewUpactPreviewDownactPreviewPageUpactPreviewPageDownactPreviewHalfPageUpactPreviewHalfPageDownactPrevHistoryactPrevSelectedactPrintactPutactNextHistoryactNextSelectedactExecuteactExecuteSilentactExecuteMultiactSigStopactFirstactLastactReloadactReloadSyncactDisableSearchactEnableSearchactSelectactDeselectactUnbindactRebindactToggleBindactBecomeactShowHeaderactHideHeaderactBellactExcludeactExcludeMulti"
+const _actionType_name = "actIgnoreactStartactClickactInvalidactBracketedPasteBeginactBracketedPasteEndactCharactMouseactBeginningOfLineactAbortactAcceptactAcceptNonEmptyactAcceptOrPrintQueryactBackwardCharactBackwardDeleteCharactBackwardDeleteCharEofactBackwardWordactCancelactChangeBorderLabelactChangeGhostactChangeHeaderactChangeHeaderLabelactChangeInputLabelactChangeListLabelactChangeMultiactChangeNthactChangePointeractChangePreviewactChangePreviewLabelactChangePreviewWindowactChangePromptactChangeQueryactClearScreenactClearQueryactClearSelectionactCloseactDeleteCharactDeleteCharEofactEndOfLineactFatalactForwardCharactForwardWordactKillLineactKillWordactUnixLineDiscardactUnixWordRuboutactYankactBackwardKillWordactSelectAllactDeselectAllactToggleactToggleSearchactToggleAllactToggleDownactToggleUpactToggleInactToggleOutactToggleTrackactToggleTrackCurrentactToggleHeaderactToggleWrapactToggleMultiLineactToggleHscrollactTrackCurrentactToggleInputactHideInputactShowInputactUntrackCurrentactDownactUpactPageUpactPageDownactPositionactHalfPageUpactHalfPageDownactOffsetUpactOffsetDownactOffsetMiddleactJumpactJumpAcceptactPrintQueryactRefreshPreviewactReplaceQueryactToggleSortactShowPreviewactHidePreviewactTogglePreviewactTogglePreviewWrapactTransformactTransformBorderLabelactTransformGhostactTransformHeaderactTransformHeaderLabelactTransformInputLabelactTransformListLabelactTransformNthactTransformPointeractTransformPreviewLabelactTransformPromptactTransformQueryactTransformSearchactSearchactPreviewactPreviewTopactPreviewBottomactPreviewUpactPreviewDownactPreviewPageUpactPreviewPageDownactPreviewHalfPageUpactPreviewHalfPageDownactPrevHistoryactPrevSelectedactPrintactPutactNextHistoryactNextSelectedactExecuteactExecuteSilentactExecuteMultiactSigStopactFirstactLastactReloadactReloadSyncactDisableSearchactEnableSearchactSelectactDeselectactUnbindactRebindactToggleBindactBecomeactShowHeaderactHideHeaderactBellactExcludeactExcludeMulti"
 
-var _actionType_index = [...]uint16{0, 9, 17, 25, 35, 57, 77, 84, 92, 110, 118, 127, 144, 165, 180, 201, 225, 240, 249, 269, 287, 306, 321, 341, 355, 376, 391, 405, 417, 431, 444, 461, 469, 482, 498, 510, 518, 532, 546, 557, 568, 586, 603, 610, 629, 641, 655, 664, 679, 691, 704, 715, 726, 738, 752, 773, 788, 801, 819, 835, 850, 864, 876, 888, 905, 912, 917, 926, 937, 948, 961, 976, 987, 1000, 1015, 1022, 1035, 1048, 1065, 1080, 1093, 1107, 1121, 1137, 1157, 1169, 1192, 1213, 1235, 1253, 1276, 1291, 1310, 1334, 1352, 1369, 1387, 1396, 1406, 1422, 1438, 1460, 1473, 1489, 1501, 1515, 1531, 1549, 1569, 1591, 1605, 1620, 1628, 1634, 1648, 1663, 1673, 1689, 1704, 1714, 1722, 1729, 1738, 1751, 1767, 1782, 1791, 1802, 1811, 1820, 1833, 1842, 1855, 1868, 1875, 1885, 1900}
+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, 318, 337, 355, 369, 381, 397, 413, 434, 456, 471, 485, 499, 512, 529, 537, 550, 566, 578, 586, 600, 614, 625, 636, 654, 671, 678, 697, 709, 723, 732, 747, 759, 772, 783, 794, 806, 820, 841, 856, 869, 887, 903, 918, 932, 944, 956, 973, 980, 985, 994, 1005, 1016, 1029, 1044, 1055, 1068, 1083, 1090, 1103, 1116, 1133, 1148, 1161, 1175, 1189, 1205, 1225, 1237, 1260, 1277, 1295, 1318, 1340, 1361, 1376, 1395, 1419, 1437, 1454, 1472, 1481, 1491, 1504, 1520, 1532, 1546, 1562, 1580, 1600, 1622, 1636, 1651, 1659, 1665, 1679, 1694, 1704, 1720, 1735, 1745, 1753, 1760, 1769, 1782, 1798, 1813, 1822, 1833, 1842, 1851, 1864, 1873, 1886, 1899, 1906, 1916, 1931}
 
 func (i actionType) String() string {
 	if i < 0 || i >= actionType(len(_actionType_index)-1) {
diff --git a/src/options.go b/src/options.go
index 80e428e3..c250fb59 100644
--- a/src/options.go
+++ b/src/options.go
@@ -1404,7 +1404,7 @@ const (
 
 func init() {
 	executeRegexp = regexp.MustCompile(
-		`(?si)[:+](become|execute(?:-multi|-silent)?|reload(?:-sync)?|preview|(?:change|transform)-(?:query|prompt|(?:border|list|preview|input|header)-label|header|search|nth|pointer)|transform|change-(?:preview-window|preview|multi)|(?:re|un|toggle-)bind|pos|put|print|search)`)
+		`(?si)[:+](become|execute(?:-multi|-silent)?|reload(?:-sync)?|preview|(?:change|transform)-(?:query|prompt|(?:border|list|preview|input|header)-label|header|search|nth|pointer|ghost)|transform|change-(?:preview-window|preview|multi)|(?:re|un|toggle-)bind|pos|put|print|search)`)
 	splitRegexp = regexp.MustCompile("[,:]+")
 	actionNameRegexp = regexp.MustCompile("(?i)^[a-z-]+")
 }
@@ -1799,6 +1799,8 @@ func isExecuteAction(str string) actionType {
 		return actChangeInputLabel
 	case "change-header-label":
 		return actChangeHeaderLabel
+	case "change-ghost":
+		return actChangeGhost
 	case "change-pointer":
 		return actChangePointer
 	case "change-preview-window":
@@ -1839,6 +1841,8 @@ func isExecuteAction(str string) actionType {
 		return actTransformHeaderLabel
 	case "transform-header":
 		return actTransformHeader
+	case "transform-ghost":
+		return actTransformGhost
 	case "transform-nth":
 		return actTransformNth
 	case "transform-pointer":
diff --git a/src/terminal.go b/src/terminal.go
index ad5ad628..8b4651c1 100644
--- a/src/terminal.go
+++ b/src/terminal.go
@@ -475,15 +475,19 @@ const (
 	actBackwardWord
 	actCancel
 	actChangeBorderLabel
-	actChangeListLabel
-	actChangeInputLabel
+	actChangeGhost
 	actChangeHeader
 	actChangeHeaderLabel
+	actChangeInputLabel
+	actChangeListLabel
 	actChangeMulti
+	actChangeNth
+	actChangePointer
+	actChangePreview
 	actChangePreviewLabel
+	actChangePreviewWindow
 	actChangePrompt
 	actChangeQuery
-	actChangeNth
 	actClearScreen
 	actClearQuery
 	actClearSelection
@@ -542,10 +546,11 @@ const (
 	actTogglePreviewWrap
 	actTransform
 	actTransformBorderLabel
-	actTransformListLabel
-	actTransformInputLabel
+	actTransformGhost
 	actTransformHeader
 	actTransformHeaderLabel
+	actTransformInputLabel
+	actTransformListLabel
 	actTransformNth
 	actTransformPointer
 	actTransformPreviewLabel
@@ -554,9 +559,6 @@ const (
 	actTransformSearch
 	actSearch
 	actPreview
-	actChangePointer
-	actChangePreview
-	actChangePreviewWindow
 	actPreviewTop
 	actPreviewBottom
 	actPreviewUp
@@ -5958,6 +5960,15 @@ func (t *Terminal) Loop() error {
 						}
 					}
 				}
+			case actChangeGhost, actTransformGhost:
+				ghost := a.a
+				if a.t == actTransformGhost {
+					ghost = t.captureLine(a.a)
+				}
+				t.ghost = ghost
+				if len(t.input) == 0 {
+					req(reqPrompt)
+				}
 			case actChangePointer, actTransformPointer:
 				pointer := a.a
 				if a.t == actTransformPointer {