Possible bugs around non-invoking usage of `isEmpty`. Fixes #27201

src/vs/editor/contrib/folding/browser/folding.ts

@@ -287,7 +287,7 @@ export class FoldingController implements IFoldingController {
 			return;
 		}
 		let range = e.target.range;
-		if (!range || !range.isEmpty) {
+		if (!range) {
 			return;
 		}
 		if (!e.event.leftButton) {
@@ -303,7 +303,7 @@ export class FoldingController implements IFoldingController {
 				break;
 			case MouseTargetType.CONTENT_EMPTY:
 			case MouseTargetType.CONTENT_TEXT:
-				if (range.isEmpty && range.startColumn === model.getLineMaxColumn(range.startLineNumber)) {
+				if (range.startColumn === model.getLineMaxColumn(range.startLineNumber)) {
 					break;
 				}
 				return;
@@ -322,7 +322,7 @@ export class FoldingController implements IFoldingController {
 		let iconClicked = this.mouseDownInfo.iconClicked;
 
 		let range = e.target.range;
-		if (!range || !range.isEmpty || range.startLineNumber !== lineNumber) {
+		if (!range || range.startLineNumber !== lineNumber) {
 			return;
 		}