https://git.ruby-lang.org/ruby.git/commit/?id=561576367b

From 561576367beeb1237a3821db1b0ab9ef66e9fb56 Mon Sep 17 00:00:00 2001
From: Jean Boussier <jean.boussier@g...>
Date: Thu, 23 Jul 2020 15:11:24 +0200
Subject: [rubygems/rubygems] Deduplicate the requirement operators in memory

https://github.com/rubygems/rubygems/commit/9963d33cf2

diff --git a/lib/rubygems/requirement.rb b/lib/rubygems/requirement.rb
index 65bc837..d9d7c2f 100644
--- a/lib/rubygems/requirement.rb
+++ b/lib/rubygems/requirement.rb
@@ -111,7 +111,7 @@ class Gem::Requirement https://github.com/ruby/ruby/blob/trunk/lib/rubygems/requirement.rb#L111
     elsif $1 == ">=" && $2 == "0.a"
       DefaultPrereleaseRequirement
     else
-      [$1 || "=", Gem::Version.new($2)]
+      [-($1 || "="), Gem::Version.new($2)]
     end
   end
 
diff --git a/test/rubygems/test_gem_requirement.rb b/test/rubygems/test_gem_requirement.rb
index 55a902d..af9d807 100644
--- a/test/rubygems/test_gem_requirement.rb
+++ b/test/rubygems/test_gem_requirement.rb
@@ -81,6 +81,12 @@ class TestGemRequirement < Gem::TestCase https://github.com/ruby/ruby/blob/trunk/test/rubygems/test_gem_requirement.rb#L81
       Gem::Requirement.parse(Gem::Version.new('2'))
   end
 
+  if RUBY_VERSION >= '2.5'
+    def test_parse_deduplication
+      assert_same '~>', Gem::Requirement.parse('~> 1').first
+    end
+  end
+
   def test_parse_bad
     [
       nil,
-- 
cgit v0.10.2


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