From 5cff8c8e529d33dfd51a1c3c25a406da1fefbae0 Mon Sep 17 00:00:00 2001
From: Jeremy Evans <code@jeremyevans.net>
Date: Wed, 22 May 2024 10:04:47 -0700
Subject: [PATCH] Avoid mutation of string in bs3 support

This will break if the string is frozen.  Found by Ruby 3.4's
string literal modification warning.
---
 lib/forme/bs3.rb | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/forme/bs3.rb b/lib/forme/bs3.rb
index 7f7939f..ee5e2da 100644
--- a/lib/forme/bs3.rb
+++ b/lib/forme/bs3.rb
@@ -356,7 +356,7 @@ def call(tag)
           case tag.attr[:type].to_sym
           when :checkbox, :radio, :hidden
             # .form-control class causes rendering problems, so remove if found
-            tag.attr[:class].gsub!(/\s*form-control\s*/,'') if tag.attr[:class]
+            tag.attr[:class] = tag.attr[:class].gsub(/\s*form-control\s*/,'') if tag.attr[:class]
             tag.attr[:class] = nil if tag.attr[:class] && tag.attr[:class].empty?
             
           when :file