From 599106047d50aa09e1e00b83d747b6f563aa8e52 Mon Sep 17 00:00:00 2001
From: "Andres G. Aragoneses" <knocte@gmail.com>
Date: Sat, 20 Jan 2024 20:57:07 +0800
Subject: [PATCH] fix: avoid slicing header if not long enough

Recent PR[1] didn't take in account very small subjects in
subject-full-stop rule.

[1] https://github.com/conventional-changelog/commitlint/pull/3839
---
 @commitlint/rules/src/subject-full-stop.ts | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/@commitlint/rules/src/subject-full-stop.ts b/@commitlint/rules/src/subject-full-stop.ts
index 2a30819b3a..e3d2e762eb 100644
--- a/@commitlint/rules/src/subject-full-stop.ts
+++ b/@commitlint/rules/src/subject-full-stop.ts
@@ -15,7 +15,8 @@ export const subjectFullStop: SyncRule<string> = (
 
 	const negated = when === 'never';
 	let hasStop = input[input.length - 1] === value;
-	if (input.slice(-3) === '...') {
+	let ellipsis = '...';
+	if (input.length > ellipsis.length && input.slice(-ellipsis.length) === ellipsis) {
 		hasStop = false;
 	}