From 0023062c82420c8374396055887c4e89cf2abeed Mon Sep 17 00:00:00 2001
From: Nathan Adams <dinnerbone@dinnerbone.com>
Date: Fri, 9 Aug 2024 17:49:18 +0200
Subject: [PATCH] avm2: Short circuit the regexp replacement logic if it's a
 simple (no pattern) string

---
 core/src/avm2/regexp.rs | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/core/src/avm2/regexp.rs b/core/src/avm2/regexp.rs
index bcc7c02d5..8ecb0bdb9 100644
--- a/core/src/avm2/regexp.rs
+++ b/core/src/avm2/regexp.rs
@@ -159,6 +159,10 @@ impl<'gc> RegExp<'gc> {
         text: &AvmString<'gc>,
         m: &regress::Match,
     ) -> WString {
+        if !replacement.contains(b'$') {
+            // Nothing to do if there's no $ replacement symbols
+            return replacement.as_wstr().to_owned();
+        }
         let mut ret = WString::new();
         let s = replacement.as_wstr();
         let mut chars = s.chars().peekable();