From b6a51ece09e31d3db2b732c8536a533b6de74768 Mon Sep 17 00:00:00 2001
From: Tristan Havelick <tristan@havelick.com>
Date: Sat, 5 Apr 2025 11:07:56 -0600
Subject: [PATCH] fix lua regex causing runaway backtracking.

Use negative lookahead to avoid runway backtracking in whitespace.

Fixes #2839
---
 pygments/lexers/scripting.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/pygments/lexers/scripting.py b/pygments/lexers/scripting.py
index 3ab32c0948..6e494c33b8 100644
--- a/pygments/lexers/scripting.py
+++ b/pygments/lexers/scripting.py
@@ -57,7 +57,7 @@ class LuaLexer(RegexLexer):
 
     _comment_multiline = r'(?:--\[(?P<level>=*)\[[\w\W]*?\](?P=level)\])'
     _comment_single = r'(?:--.*$)'
-    _space = r'(?:\s+)'
+    _space = r'(?:\s+(?!\s))'
     _s = rf'(?:{_comment_multiline}|{_comment_single}|{_space})'
     _name = r'(?:[^\W\d]\w*)'