From 27b72b76918e9c14df1ca81e7a3e929a4fc44e7e Mon Sep 17 00:00:00 2001
From: simonLeary42 <71396965+simonLeary42@users.noreply.github.com>
Date: Fri, 9 Feb 2024 09:50:05 -0500
Subject: Allow `+` in module file names (#41999)

---
 lib/spack/llnl/util/filesystem.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'lib')

diff --git a/lib/spack/llnl/util/filesystem.py b/lib/spack/llnl/util/filesystem.py
index 798d4b55bc..cff512a167 100644
--- a/lib/spack/llnl/util/filesystem.py
+++ b/lib/spack/llnl/util/filesystem.py
@@ -171,7 +171,7 @@ def polite_path(components: Iterable[str]):
 @memoized
 def _polite_antipattern():
     # A regex of all the characters we don't want in a filename
-    return re.compile(r"[^A-Za-z0-9_.-]")
+    return re.compile(r"[^A-Za-z0-9_+.-]")
 
 
 def polite_filename(filename: str) -> str:
-- 
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