fix: subject-full-stop false positive when using ellipsis (#3839)

* test: using ellipses in titles ending

The SubjectFullStop failing test on
a title that ends with ellipsis.

* fix: subjectFullStop considering ellipsis

Author: Mersho

@commitlint/rules/src/subject-full-stop.test.ts

@@ -7,6 +7,7 @@ const messages = {
 	without: `test: subject\n`,
 	standardScopeWith: `type(scope): subject.\n`,
 	nonStandardScopeWith: 'type.scope: subject.\n',
+	ellipsisMessage: 'test: subject ends with ellipsis...',
 };
 
 const parsed = {
@@ -15,6 +16,7 @@ const parsed = {
 	without: parse(messages.without),
 	standardScopeWith: parse(messages.standardScopeWith),
 	nonStandardScopeWith: parse(messages.nonStandardScopeWith),
+	ellipsisMessage: parse(messages.ellipsisMessage),
 };
 
 test('empty against "always" should succeed', async () => {
@@ -72,3 +74,9 @@ test('commit message title with non standard scope and full-stop against "never
 	const expected = false;
 	expect(actual).toEqual(expected);
 });
+
+test('ellipsis is not fullstop so commit title ending with it against "never ." should not fail', async () => {
+	const [actual] = subjectFullStop(await parsed.ellipsisMessage, 'never', '.');
+	const expected = true;
+	expect(actual).toEqual(expected);
+});

@commitlint/rules/src/subject-full-stop.ts

@@ -14,7 +14,10 @@ export const subjectFullStop: SyncRule<string> = (
 	const input = parsed.header;
 
 	const negated = when === 'never';
-	const hasStop = input[input.length - 1] === value;
+	let hasStop = input[input.length - 1] === value;
+	if (input.slice(-3) === '...') {
+		hasStop = false;
+	}
 
 	return [
 		negated ? !hasStop : hasStop,