From c01a5ee85e2d6a7128cccafb143bfa694284ca87 Mon Sep 17 00:00:00 2001
From: kazu <kazu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Tue, 4 Dec 2018 08:22:10 +0000
Subject: Use delete_prefix instead of `sub(/\Afixed-pattern/, '')`

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@66189 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 lib/un.rb | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'lib/un.rb')

diff --git a/lib/un.rb b/lib/un.rb
index d109a3417b..14f5b10fec 100644
--- a/lib/un.rb
+++ b/lib/un.rb
@@ -47,7 +47,7 @@ def setup(options = "", *long_options)
     end
     long_options.each do |s|
       opt_name, arg_name = s.split(/(?=[\s=])/, 2)
-      opt_name.sub!(/\A--/, '')
+      opt_name.delete_prefix!('--')
       s = "--#{opt_name.gsub(/([A-Z]+|[a-z])([A-Z])/, '\1-\2').downcase}#{arg_name}"
       puts "#{opt_name}=>#{s}" if $DEBUG
       opt_name = opt_name.intern
-- 
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