Port Homebrew::Cmd::CommandsCmd

Library/Homebrew/cmd/commands.rb

@@ -1,14 +1,12 @@
 # typed: strict
 # frozen_string_literal: true
 
-require "cli/parser"
+require "abstract_command"
 
 module Homebrew
-  module_function
-
-  sig { returns(CLI::Parser) }
-  def commands_args
-    Homebrew::CLI::Parser.new do
+  module Cmd
+    class CommandsCmd < AbstractCommand
+      cmd_args do
         description <<~EOS
           Show lists of built-in and external commands.
         EOS
@@ -20,12 +18,9 @@ module Homebrew
 
         named_args :none
       end
-  end
-
-  sig { void }
-  def commands
-    args = commands_args.parse
 
+      sig { override.void }
+      def run
         if args.quiet?
           puts Formatter.columns(Commands.commands(aliases: args.include_aliases?))
           return
@@ -47,3 +42,5 @@ module Homebrew
         end
       end
     end
+  end
+end

Library/Homebrew/test/cmd/commands_spec.rb

@@ -1,11 +1,9 @@
 # frozen_string_literal: true
 
 require "cmd/commands"
-require "fileutils"
-
 require "cmd/shared_examples/args_parse"
 
-RSpec.describe "brew commands" do
+RSpec.describe Homebrew::Cmd::CommandsCmd do
   it_behaves_like "parseable arguments"
 
   it "prints a list of all available commands", :integration_test do