fix https://github.com/microsoft/vscode/issues/96013

src/vs/editor/common/model/wordHelper.ts

@@ -93,13 +93,15 @@ export function getWordAtText(column: number, wordDefinition: RegExp, text: stri
 		// should stop so that subsequent search don't repeat previous searches
 		const regexIndex = pos - config.windowSize * i;
 		wordDefinition.lastIndex = Math.max(0, regexIndex);
-		match = _findRegexMatchEnclosingPosition(wordDefinition, text, pos, prevRegexIndex);
+		const thisMatch = _findRegexMatchEnclosingPosition(wordDefinition, text, pos, prevRegexIndex);
 
-		// stop: found something
-		if (match) {
+		if (!thisMatch && match) {
+			// stop: we have something
 			break;
 		}
 
+		match = thisMatch;
+
 		// stop: searched at start
 		if (regexIndex <= 0) {
 			break;
@@ -111,7 +113,7 @@ export function getWordAtText(column: number, wordDefinition: RegExp, text: stri
 		let result = {
 			word: match[0],
 			startColumn: textOffset + 1 + match.index!,
-			endColumn: textOffset + 1 + wordDefinition.lastIndex
+			endColumn: textOffset + 1 + match.index! + match[0].length
 		};
 		wordDefinition.lastIndex = 0;
 		return result;

src/vs/workbench/test/browser/api/extHostDocumentData.test.ts

@@ -315,6 +315,22 @@ suite('ExtHostDocumentData', () => {
 		assert.ok(range.contains(pos));
 		assert.equal(data.document.getText(range), 'TaskDefinition');
 	});
+
+	test('Rename popup sometimes populates with text on the left side omitted #96013', function () {
+
+		const regex = /(-?\d*\.\d\w*)|([^\`\~\!\@\#\$\%\^\&\*\(\)\-\=\+\[\{\]\}\\\|\;\:\'\"\,\.\<\>\/\?\s]+)/g;
+		const line = 'int abcdefhijklmnopqwvrstxyz;';
+
+		data = new ExtHostDocumentData(undefined!, URI.file(''), [
+			line
+		], '\n', 'text', 1, false);
+
+		let range = data.document.getWordRangeAtPosition(new Position(0, 27), regex)!;
+		assert.equal(range.start.line, 0);
+		assert.equal(range.end.line, 0);
+		assert.equal(range.start.character, 4);
+		assert.equal(range.end.character, 28);
+	});
 });
 
 enum AssertDocumentLineMappingDirection {