From 0429284d5dcd5019fb901e75f63c814843192d43 Mon Sep 17 00:00:00 2001
From: Koichi ITO <koic.ito@gmail.com>
Date: Sun, 14 Dec 2025 14:32:10 +0900
Subject: [PATCH] Remove redundant `String#dup`
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Since no destructive methods are being called, `dup` isn’t necessary.
---
 lib/mcp/string_utils.rb | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/mcp/string_utils.rb b/lib/mcp/string_utils.rb
index 07e153e..2dd4e0f 100644
--- a/lib/mcp/string_utils.rb
+++ b/lib/mcp/string_utils.rb
@@ -15,7 +15,7 @@ def demodulize(path)
     end
 
     def underscore(camel_cased_word)
-      camel_cased_word.dup
+      camel_cased_word
         .gsub(/([A-Z]+)([A-Z][a-z])/, '\1_\2')
         .gsub(/([a-z\d])([A-Z])/, '\1_\2')
         .tr("-", "_")