From c01b2308b36c3940431eb25045960aa10b92ea79 Mon Sep 17 00:00:00 2001
From: Borewit <borewit@xs4all.nl>
Date: Sun, 8 Sep 2024 12:32:40 +0200
Subject: [PATCH] Reorder ACE signature check (#669)

---
 core.js | 18 ++++++++----------
 1 file changed, 8 insertions(+), 10 deletions(-)

diff --git a/core.js b/core.js
index 81787c3d..8f4aa425 100644
--- a/core.js
+++ b/core.js
@@ -1129,16 +1129,6 @@ export class FileTypeParser {
 			};
 		}
 
-		if (this.checkString('**ACE', {offset: 7})) {
-			await tokenizer.peekBuffer(this.buffer, {length: 14, mayBeLess: true});
-			if (this.checkString('**', {offset: 12})) {
-				return {
-					ext: 'ace',
-					mime: 'application/x-ace-compressed',
-				};
-			}
-		}
-
 		if (
 			this.checkString('WEBVTT')
 			&&	(
@@ -1432,6 +1422,14 @@ export class FileTypeParser {
 			};
 		}
 
+		// ACE: requires 14 bytes in the buffer
+		if (this.checkString('**ACE', {offset: 7}) && this.checkString('**', {offset: 12})) {
+			return {
+				ext: 'ace',
+				mime: 'application/x-ace-compressed',
+			};
+		}
+
 		// -- 15-byte signatures --
 
 		if (this.checkString('BEGIN:')) {