Implemented SkipMultiCursorBack as a counterpart to SkipMultiCursor (zyedidia#3404)

Author: masmu

internal/action/actions.go

@@ -2167,22 +2167,24 @@ func (h *BufPane) MouseMultiCursor(e *tcell.EventMouse) bool {
 	return true
 }
 
-// SkipMultiCursor moves the current multiple cursor to the next available position
-func (h *BufPane) SkipMultiCursor() bool {
+func (h *BufPane) skipMultiCursor(forward bool) bool {
 	lastC := h.Buf.GetCursor(h.Buf.NumCursors() - 1)
 	if !lastC.HasSelection() {
 		return false
 	}
 	sel := lastC.GetSelection()
 	searchStart := lastC.CurSelection[1]
+	if !forward {
+		searchStart = lastC.CurSelection[0]
+	}
 
 	search := string(sel)
 	search = regexp.QuoteMeta(search)
 	if h.multiWord {
 		search = "\\b" + search + "\\b"
 	}
 
-	match, found, err := h.Buf.FindNext(search, h.Buf.Start(), h.Buf.End(), searchStart, true, true)
+	match, found, err := h.Buf.FindNext(search, h.Buf.Start(), h.Buf.End(), searchStart, forward, true)
 	if err != nil {
 		InfoBar.Error(err)
 	}
@@ -2202,6 +2204,16 @@ func (h *BufPane) SkipMultiCursor() bool {
 	return true
 }
 
+// SkipMultiCursor moves the current multiple cursor to the next available position
+func (h *BufPane) SkipMultiCursor() bool {
+	return h.skipMultiCursor(true)
+}
+
+// SkipMultiCursorBack moves the current multiple cursor to the previous available position
+func (h *BufPane) SkipMultiCursorBack() bool {
+	return h.skipMultiCursor(false)
+}
+
 // RemoveMultiCursor removes the latest multiple cursor
 func (h *BufPane) RemoveMultiCursor() bool {
 	if h.Buf.NumCursors() > 1 {

internal/action/bufpane.go

@@ -851,6 +851,7 @@ var BufKeyActions = map[string]BufKeyAction{
 	"RemoveMultiCursor":         (*BufPane).RemoveMultiCursor,
 	"RemoveAllMultiCursors":     (*BufPane).RemoveAllMultiCursors,
 	"SkipMultiCursor":           (*BufPane).SkipMultiCursor,
+	"SkipMultiCursorBack":       (*BufPane).SkipMultiCursorBack,
 	"JumpToMatchingBrace":       (*BufPane).JumpToMatchingBrace,
 	"JumpLine":                  (*BufPane).JumpLine,
 	"Deselect":                  (*BufPane).Deselect,

runtime/help/keybindings.md

@@ -274,6 +274,7 @@ SpawnMultiCursorSelect
 RemoveMultiCursor
 RemoveAllMultiCursors
 SkipMultiCursor
+SkipMultiCursorBack
 None
 JumpToMatchingBrace
 Autocomplete