From 6d0c10b1b791e1938ce42c332280f5fe7dcd489f Mon Sep 17 00:00:00 2001
From: Grzegorz Bizon <grzesiek.bizon@gmail.com>
Date: Fri, 11 May 2018 13:28:51 +0200
Subject: [PATCH] Make it possible to compare untrusted regexps

---
 lib/gitlab/untrusted_regexp.rb | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/lib/gitlab/untrusted_regexp.rb b/lib/gitlab/untrusted_regexp.rb
index 7ce2e9d636e..fb25755391d 100644
--- a/lib/gitlab/untrusted_regexp.rb
+++ b/lib/gitlab/untrusted_regexp.rb
@@ -9,7 +9,7 @@ module Gitlab
   # there is a strict limit on total execution time. See the RE2 documentation
   # at https://github.com/google/re2/wiki/Syntax for more details.
   class UntrustedRegexp
-    delegate :===, to: :regexp
+    delegate :===, :source, to: :regexp
 
     def initialize(pattern)
       @regexp = RE2::Regexp.new(pattern, log_errors: false)
@@ -31,6 +31,10 @@ module Gitlab
       RE2.Replace(text, regexp, rewrite)
     end
 
+    def ==(other)
+      self.source == other.source
+    end
+
     private
 
     attr_reader :regexp