Port Homebrew::Cmd::CompletionsCmd

Library/Homebrew/cmd/completions.rb

@@ -1,15 +1,13 @@
 # typed: strict
 # frozen_string_literal: true
 
-require "cli/parser"
+require "abstract_command"
 require "completions"
 
 module Homebrew
-  module_function
+  module Cmd
-
+    class CompletionsCmd < AbstractCommand
-  sig { returns(CLI::Parser) }
+      cmd_args do
-  def completions_args
-    Homebrew::CLI::Parser.new do
         description <<~EOS
           Control whether Homebrew automatically links external tap shell completion files.
           Read more at <https://docs.brew.sh/Shell-Completion>.
@@ -23,12 +21,9 @@ module Homebrew
 
         named_args %w[state link unlink], max: 1
       end
-  end
-
-  sig { void }
-  def completions
-    args = completions_args.parse
 
+      sig { override.void }
+      def run
         case args.named.first
         when nil, "state"
           if Completions.link_completions?
@@ -46,4 +41,6 @@ module Homebrew
           raise UsageError, "unknown subcommand: #{args.named.first}"
         end
       end
+    end
+  end
 end

Library/Homebrew/test/cmd/completions_spec.rb

@@ -1,8 +1,9 @@
 # frozen_string_literal: true
 
+require "cmd/completions"
 require "cmd/shared_examples/args_parse"
 
-RSpec.describe "brew completions" do
+RSpec.describe Homebrew::Cmd::CompletionsCmd do
   it_behaves_like "parseable arguments"
 
   it "runs the status subcommand correctly", :integration_test do