Ctrl-click on a selection deselects it in multiple selection mode.

2 files changed, 19 insertions, 2 deletions

diff --git a/doc/ScintillaHistory.html b/doc/ScintillaHistory.html
index 2e26d8900..b37d6bbf0 100644
--- a/doc/ScintillaHistory.html
+++ b/doc/ScintillaHistory.html
@@ -591,6 +591,9 @@
 	Released 18 November 2023.
 	</li>
 	<li>
+	Ctrl-click on a selection deselects it in multiple selection mode.
+	</li>
+	<li>
 	Add SCI_SELECTIONFROMPOINT for modifying multiple selections.
 	</li>
 	<li>
diff --git a/src/Editor.cxx b/src/Editor.cxx
index 3018cc0bd..3421dc72d 100644
--- a/src/Editor.cxx
+++ b/src/Editor.cxx
@@ -4789,8 +4789,22 @@ void Editor::ButtonDownWithModifiers(Point pt, unsigned int curTime, KeyMod modi
 				hotSpotClickPos = newCharPos.Position();
 			}
 			if (!shift) {
-				if (PointInSelection(pt) && !SelectionEmpty()) {
-					inDragDrop = DragDrop::initial;
+				const ptrdiff_t selectionPart = SelectionFromPoint(pt);
+				if (selectionPart >= 0) {
+					if (multipleSelection && ctrl) {
+						// Deselect
+						if (sel.Count() > 1) {
+							DropSelection(selectionPart);
+							// Completed: don't want any more processing of this click
+							return;
+						} else {
+							// Switch to just the click position
+							SetSelection(newPos, newPos);
+						}
+					}
+					if (!sel.Range(selectionPart).Empty()) {
+						inDragDrop = DragDrop::initial;
+					}
 				}
 			}
 			ChangeMouseCapture(true);