Add 'offset-middle' action

5 files changed, 66 insertions, 55 deletions

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 365911fa..7de73950 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,7 +1,7 @@
 CHANGELOG
 =========
 
-0.53.1
+0.54.0
 ------
 - Better cache management and improved rendering for `--tail`
 - Improved `--sync` behavior
@@ -15,8 +15,9 @@ CHANGELOG
   ```sh
   fzf --listen --sync --bind 'focus:transform-header:curl -s localhost:$FZF_PORT?limit=0 | jq .'
   ```
-- Fixed crash when using `--tiebreak=end` with very long items
+- Added `offset-middle` action to place the current item is in the middle of the screen
 - Fixed mouse support on Windows
+- Fixed crash when using `--tiebreak=end` with very long items
 - zsh 5.0 compatibility (thanks to @LangLangBart)
 - Fixed `--walker-skip` to also skip symlinks to directories
 - Fixed `result` event not fired when input stream is not complete
diff --git a/man/man1/fzf.1 b/man/man1/fzf.1
index 59140272..94b7c1c3 100644
--- a/man/man1/fzf.1
+++ b/man/man1/fzf.1
@@ -21,7 +21,7 @@ LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 THE SOFTWARE.
 ..
-.TH fzf 1 "Jun 2024" "fzf 0.53.0" "fzf - a command-line fuzzy finder"
+.TH fzf 1 "Jun 2024" "fzf 0.54.0" "fzf - a command-line fuzzy finder"
 
 .SH NAME
 fzf - a command-line fuzzy finder
@@ -1437,6 +1437,7 @@ A key or an event can be bound to one or more of the following actions.
     \fBhide-preview\fR
     \fBoffset-down\fR                  (similar to CTRL-E of Vim)
     \fBoffset-up\fR                    (similar to CTRL-Y of Vim)
+    \fBoffset-middle\fR                (place the current item is in the middle of the screen)
     \fBpos(...)\fR                     (move cursor to the numeric position; negative number to count from the end)
     \fBprev-history\fR                 (\fIctrl-p\fR on \fB--history\fR)
     \fBprev-selected\fR                (move to the previous selected item)
diff --git a/src/actiontype_string.go b/src/actiontype_string.go
index 91c2a7fe..03ec74c4 100644
--- a/src/actiontype_string.go
+++ b/src/actiontype_string.go
@@ -69,61 +69,62 @@ func _() {
 	_ = x[actHalfPageDown-58]
 	_ = x[actOffsetUp-59]
 	_ = x[actOffsetDown-60]
-	_ = x[actJump-61]
-	_ = x[actJumpAccept-62]
-	_ = x[actPrintQuery-63]
-	_ = x[actRefreshPreview-64]
-	_ = x[actReplaceQuery-65]
-	_ = x[actToggleSort-66]
-	_ = x[actShowPreview-67]
-	_ = x[actHidePreview-68]
-	_ = x[actTogglePreview-69]
-	_ = x[actTogglePreviewWrap-70]
-	_ = x[actTransform-71]
-	_ = x[actTransformBorderLabel-72]
-	_ = x[actTransformHeader-73]
-	_ = x[actTransformPreviewLabel-74]
-	_ = x[actTransformPrompt-75]
-	_ = x[actTransformQuery-76]
-	_ = x[actPreview-77]
-	_ = x[actChangePreview-78]
-	_ = x[actChangePreviewWindow-79]
-	_ = x[actPreviewTop-80]
-	_ = x[actPreviewBottom-81]
-	_ = x[actPreviewUp-82]
-	_ = x[actPreviewDown-83]
-	_ = x[actPreviewPageUp-84]
-	_ = x[actPreviewPageDown-85]
-	_ = x[actPreviewHalfPageUp-86]
-	_ = x[actPreviewHalfPageDown-87]
-	_ = x[actPrevHistory-88]
-	_ = x[actPrevSelected-89]
-	_ = x[actPrint-90]
-	_ = x[actPut-91]
-	_ = x[actNextHistory-92]
-	_ = x[actNextSelected-93]
-	_ = x[actExecute-94]
-	_ = x[actExecuteSilent-95]
-	_ = x[actExecuteMulti-96]
-	_ = x[actSigStop-97]
-	_ = x[actFirst-98]
-	_ = x[actLast-99]
-	_ = x[actReload-100]
-	_ = x[actReloadSync-101]
-	_ = x[actDisableSearch-102]
-	_ = x[actEnableSearch-103]
-	_ = x[actSelect-104]
-	_ = x[actDeselect-105]
-	_ = x[actUnbind-106]
-	_ = x[actRebind-107]
-	_ = x[actBecome-108]
-	_ = x[actShowHeader-109]
-	_ = x[actHideHeader-110]
+	_ = x[actOffsetMiddle-61]
+	_ = x[actJump-62]
+	_ = x[actJumpAccept-63]
+	_ = x[actPrintQuery-64]
+	_ = x[actRefreshPreview-65]
+	_ = x[actReplaceQuery-66]
+	_ = x[actToggleSort-67]
+	_ = x[actShowPreview-68]
+	_ = x[actHidePreview-69]
+	_ = x[actTogglePreview-70]
+	_ = x[actTogglePreviewWrap-71]
+	_ = x[actTransform-72]
+	_ = x[actTransformBorderLabel-73]
+	_ = x[actTransformHeader-74]
+	_ = x[actTransformPreviewLabel-75]
+	_ = x[actTransformPrompt-76]
+	_ = x[actTransformQuery-77]
+	_ = x[actPreview-78]
+	_ = x[actChangePreview-79]
+	_ = x[actChangePreviewWindow-80]
+	_ = x[actPreviewTop-81]
+	_ = x[actPreviewBottom-82]
+	_ = x[actPreviewUp-83]
+	_ = x[actPreviewDown-84]
+	_ = x[actPreviewPageUp-85]
+	_ = x[actPreviewPageDown-86]
+	_ = x[actPreviewHalfPageUp-87]
+	_ = x[actPreviewHalfPageDown-88]
+	_ = x[actPrevHistory-89]
+	_ = x[actPrevSelected-90]
+	_ = x[actPrint-91]
+	_ = x[actPut-92]
+	_ = x[actNextHistory-93]
+	_ = x[actNextSelected-94]
+	_ = x[actExecute-95]
+	_ = x[actExecuteSilent-96]
+	_ = x[actExecuteMulti-97]
+	_ = x[actSigStop-98]
+	_ = x[actFirst-99]
+	_ = x[actLast-100]
+	_ = x[actReload-101]
+	_ = x[actReloadSync-102]
+	_ = x[actDisableSearch-103]
+	_ = x[actEnableSearch-104]
+	_ = x[actSelect-105]
+	_ = x[actDeselect-106]
+	_ = x[actUnbind-107]
+	_ = x[actRebind-108]
+	_ = x[actBecome-109]
+	_ = x[actShowHeader-110]
+	_ = x[actHideHeader-111]
 }
 
-const _actionType_name = "actIgnoreactStartactClickactInvalidactCharactMouseactBeginningOfLineactAbortactAcceptactAcceptNonEmptyactAcceptOrPrintQueryactBackwardCharactBackwardDeleteCharactBackwardDeleteCharEofactBackwardWordactCancelactChangeBorderLabelactChangeHeaderactChangeMultiactChangePreviewLabelactChangePromptactChangeQueryactClearScreenactClearQueryactClearSelectionactCloseactDeleteCharactDeleteCharEofactEndOfLineactFatalactForwardCharactForwardWordactKillLineactKillWordactUnixLineDiscardactUnixWordRuboutactYankactBackwardKillWordactSelectAllactDeselectAllactToggleactToggleSearchactToggleAllactToggleDownactToggleUpactToggleInactToggleOutactToggleTrackactToggleTrackCurrentactToggleHeaderactTrackCurrentactUntrackCurrentactDownactUpactPageUpactPageDownactPositionactHalfPageUpactHalfPageDownactOffsetUpactOffsetDownactJumpactJumpAcceptactPrintQueryactRefreshPreviewactReplaceQueryactToggleSortactShowPreviewactHidePreviewactTogglePreviewactTogglePreviewWrapactTransformactTransformBorderLabelactTransformHeaderactTransformPreviewLabelactTransformPromptactTransformQueryactPreviewactChangePreviewactChangePreviewWindowactPreviewTopactPreviewBottomactPreviewUpactPreviewDownactPreviewPageUpactPreviewPageDownactPreviewHalfPageUpactPreviewHalfPageDownactPrevHistoryactPrevSelectedactPrintactPutactNextHistoryactNextSelectedactExecuteactExecuteSilentactExecuteMultiactSigStopactFirstactLastactReloadactReloadSyncactDisableSearchactEnableSearchactSelectactDeselectactUnbindactRebindactBecomeactShowHeaderactHideHeader"
+const _actionType_name = "actIgnoreactStartactClickactInvalidactCharactMouseactBeginningOfLineactAbortactAcceptactAcceptNonEmptyactAcceptOrPrintQueryactBackwardCharactBackwardDeleteCharactBackwardDeleteCharEofactBackwardWordactCancelactChangeBorderLabelactChangeHeaderactChangeMultiactChangePreviewLabelactChangePromptactChangeQueryactClearScreenactClearQueryactClearSelectionactCloseactDeleteCharactDeleteCharEofactEndOfLineactFatalactForwardCharactForwardWordactKillLineactKillWordactUnixLineDiscardactUnixWordRuboutactYankactBackwardKillWordactSelectAllactDeselectAllactToggleactToggleSearchactToggleAllactToggleDownactToggleUpactToggleInactToggleOutactToggleTrackactToggleTrackCurrentactToggleHeaderactTrackCurrentactUntrackCurrentactDownactUpactPageUpactPageDownactPositionactHalfPageUpactHalfPageDownactOffsetUpactOffsetDownactOffsetMiddleactJumpactJumpAcceptactPrintQueryactRefreshPreviewactReplaceQueryactToggleSortactShowPreviewactHidePreviewactTogglePreviewactTogglePreviewWrapactTransformactTransformBorderLabelactTransformHeaderactTransformPreviewLabelactTransformPromptactTransformQueryactPreviewactChangePreviewactChangePreviewWindowactPreviewTopactPreviewBottomactPreviewUpactPreviewDownactPreviewPageUpactPreviewPageDownactPreviewHalfPageUpactPreviewHalfPageDownactPrevHistoryactPrevSelectedactPrintactPutactNextHistoryactNextSelectedactExecuteactExecuteSilentactExecuteMultiactSigStopactFirstactLastactReloadactReloadSyncactDisableSearchactEnableSearchactSelectactDeselectactUnbindactRebindactBecomeactShowHeaderactHideHeader"
 
-var _actionType_index = [...]uint16{0, 9, 17, 25, 35, 42, 50, 68, 76, 85, 102, 123, 138, 159, 183, 198, 207, 227, 242, 256, 277, 292, 306, 320, 333, 350, 358, 371, 387, 399, 407, 421, 435, 446, 457, 475, 492, 499, 518, 530, 544, 553, 568, 580, 593, 604, 615, 627, 641, 662, 677, 692, 709, 716, 721, 730, 741, 752, 765, 780, 791, 804, 811, 824, 837, 854, 869, 882, 896, 910, 926, 946, 958, 981, 999, 1023, 1041, 1058, 1068, 1084, 1106, 1119, 1135, 1147, 1161, 1177, 1195, 1215, 1237, 1251, 1266, 1274, 1280, 1294, 1309, 1319, 1335, 1350, 1360, 1368, 1375, 1384, 1397, 1413, 1428, 1437, 1448, 1457, 1466, 1475, 1488, 1501}
+var _actionType_index = [...]uint16{0, 9, 17, 25, 35, 42, 50, 68, 76, 85, 102, 123, 138, 159, 183, 198, 207, 227, 242, 256, 277, 292, 306, 320, 333, 350, 358, 371, 387, 399, 407, 421, 435, 446, 457, 475, 492, 499, 518, 530, 544, 553, 568, 580, 593, 604, 615, 627, 641, 662, 677, 692, 709, 716, 721, 730, 741, 752, 765, 780, 791, 804, 819, 826, 839, 852, 869, 884, 897, 911, 925, 941, 961, 973, 996, 1014, 1038, 1056, 1073, 1083, 1099, 1121, 1134, 1150, 1162, 1176, 1192, 1210, 1230, 1252, 1266, 1281, 1289, 1295, 1309, 1324, 1334, 1350, 1365, 1375, 1383, 1390, 1399, 1412, 1428, 1443, 1452, 1463, 1472, 1481, 1490, 1503, 1516}
 
 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 35784e5c..ba5b3e6a 100644
--- a/src/options.go
+++ b/src/options.go
@@ -1419,6 +1419,8 @@ func parseActionList(masked string, original string, prevActions []*action, putA
 			appendAction(actOffsetUp)
 		case "offset-down":
 			appendAction(actOffsetDown)
+		case "offset-middle":
+			appendAction(actOffsetMiddle)
 		case "preview-top":
 			appendAction(actPreviewTop)
 		case "preview-bottom":
diff --git a/src/terminal.go b/src/terminal.go
index 20faeb21..8eaab3f2 100644
--- a/src/terminal.go
+++ b/src/terminal.go
@@ -451,6 +451,7 @@ const (
 	actHalfPageDown
 	actOffsetUp
 	actOffsetDown
+	actOffsetMiddle
 	actJump
 	actJumpAccept // XXX Deprecated in favor of jump:accept binding
 	actPrintQuery // XXX Deprecated (not very useful, just use --print-query)
@@ -4199,6 +4200,11 @@ func (t *Terminal) Loop() error {
 					t.vmove(diff, false)
 				}
 				req(reqList)
+			case actOffsetMiddle:
+				soff := t.scrollOff
+				t.scrollOff = t.window.Height()
+				t.constrain()
+				t.scrollOff = soff
 			case actJump:
 				t.jumping = jumpEnabled
 				req(reqJump)