https://git.ruby-lang.org/ruby.git/commit/?id=0dd8c6157d

From 0dd8c6157d4ef3e3584b5f87f4af82e3d56339e8 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?David=20Rodr=C3=ADguez?= <deivid.rodriguez@r...>
Date: Mon, 17 Jan 2022 14:42:41 +0100
Subject: [rubygems/rubygems] Don't pass regexp to `Gem::Dependency.new` during
 `gem dependency`

https://github.com/rubygems/rubygems/commit/89dd5158a4
---
 lib/rubygems/commands/dependency_command.rb | 42 ++++++++++++++---------------
 1 file changed, 20 insertions(+), 22 deletions(-)

diff --git a/lib/rubygems/commands/dependency_command.rb b/lib/rubygems/commands/dependency_command.rb
index 34ec2f68528..d2fed022fe1 100644
--- a/lib/rubygems/commands/dependency_command.rb
+++ b/lib/rubygems/commands/dependency_command.rb
@@ -53,41 +53,41 @@ use with other commands. https://github.com/ruby/ruby/blob/trunk/lib/rubygems/commands/dependency_command.rb#L53
     "#{program_name} REGEXP"
   end
 
-  def fetch_remote_specs(dependency) # :nodoc:
+  def fetch_remote_specs(name, requirement, prerelease) # :nodoc:
     fetcher = Gem::SpecFetcher.fetcher
 
-    ss, = fetcher.spec_for_dependency dependency
+    specs_type = prerelease ? :complete : :released
 
-    ss.map {|spec, _| spec }
+    ss = if name.nil?
+      fetcher.detect(specs_type) { true }
+    else
+      fetcher.detect(specs_type) do |name_tuple|
+        name === name_tuple.name && requirement.satisfied_by?(name_tuple.version)
+      end
+    end
+
+    ss.map {|tuple, source| source.fetch_spec(tuple) }
   end
 
-  def fetch_specs(name_pattern, dependency) # :nodoc:
+  def fetch_specs(name_pattern, requirement, prerelease) # :nodoc:
     specs = []
 
     if local?
       specs.concat Gem::Specification.stubs.find_all {|spec|
-        name_pattern =~ spec.name and
-          dependency.requirement.satisfied_by? spec.version
+        name_matches = name_pattern ? name_pattern =~ spec.name : true
+        version_matches = requirement.satisfied_by?(spec.version)
+
+        name_matches and version_matches
       }.map(&:to_spec)
     end
 
-    specs.concat fetch_remote_specs dependency if remote?
+    specs.concat fetch_remote_specs name_pattern, requirement, prerelease if remote?
 
     ensure_specs specs
 
     specs.uniq.sort
   end
 
-  def gem_dependency(pattern, version, prerelease) # :nodoc:
-    dependency = Gem::Deprecate.skip_during do
-      Gem::Dependency.new pattern, version
-    end
-
-    dependency.prerelease = prerelease
-
-    dependency
-  end
-
   def display_pipe(specs) # :nodoc:
     specs.each do |spec|
       unless spec.dependencies.empty?
@@ -119,11 +119,9 @@ use with other commands. https://github.com/ruby/ruby/blob/trunk/lib/rubygems/commands/dependency_command.rb#L119
     ensure_local_only_reverse_dependencies
 
     pattern = name_pattern options[:args]
+    requirement = Gem::Requirement.new options[:version]
 
-    dependency =
-      gem_dependency pattern, options[:version], options[:prerelease]
-
-    specs = fetch_specs pattern, dependency
+    specs = fetch_specs pattern, requirement, options[:prerelease]
 
     reverse = reverse_dependencies specs
 
@@ -197,7 +195,7 @@ use with other commands. https://github.com/ruby/ruby/blob/trunk/lib/rubygems/commands/dependency_command.rb#L195
   private
 
   def name_pattern(args)
-    args << '' if args.empty?
+    return if args.empty?
 
     if args.length == 1 and args.first =~ /\A(.*)(i)?\z/m
       flags = $2 ? Regexp::IGNORECASE : nil
-- 
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