Cleanup rubocop-cask references.

Library/Homebrew/cask/cmd/style.rb

@@ -20,7 +20,7 @@ module Cask
       def install_rubocop
         capture_stderr do
           begin
-            Homebrew.install_gem_setup_path! "rubocop-cask", HOMEBREW_RUBOCOP_CASK_VERSION, "rubocop"
+            Homebrew.install_gem_setup_path! "rubocop"
           rescue SystemExit
             raise CaskError, Tty.strip_ansi($stderr.string).chomp.sub(/\AError: /, "")
           end
@@ -43,8 +43,8 @@ module Cask
 
       def default_args
         [
-          "--require", "rubocop-cask",
+          "--force-exclusion",
-          "--force-default-config",
+          "--config", "#{HOMEBREW_LIBRARY}/.rubocop.yml",
           "--format", "simple"
         ]
       end

Library/Homebrew/constants.rb

@@ -1,5 +0,0 @@
-# frozen_string_literal: true
-
-# RuboCop version used for `brew style` and `brew cask style`
-HOMEBREW_RUBOCOP_VERSION = "0.60.0"
-HOMEBREW_RUBOCOP_CASK_VERSION = "~> 0.23.0" # has to be updated when RuboCop version changes

Library/Homebrew/global.rb

@@ -151,7 +151,6 @@ require "active_support/core_ext/object/blank"
 require "active_support/core_ext/hash/deep_merge"
 require "active_support/core_ext/file/atomic"
 
-require "constants"
 require "exceptions"
 require "utils"
 

Library/Homebrew/manpages/brew-cask.1.md

@@ -104,7 +104,7 @@ graphical user interface.
     Ruby regular expression.
 
   * `style` [--fix] [ <token> ... ]:
-    Check the given Casks for correct style using [RuboCop Cask](https://github.com/Homebrew/rubocop-cask).
+    Check the given Casks for correct style using RuboCop (with custom Cask cops).
     If no tokens are given on the command line, all Casks are checked.
     With `--fix`, auto-correct any style errors if possible.
 

Library/Homebrew/style.rb

@@ -17,7 +17,7 @@ module Homebrew
     def check_style_impl(files, output_type, options = {})
       fix = options[:fix]
 
-      Homebrew.install_gem_setup_path! "rubocop", HOMEBREW_RUBOCOP_VERSION
+      Homebrew.install_gem_setup_path! "rubocop"
       Homebrew.install_gem! "rubocop-rspec"
       require "rubocop"
       require "rubocops"
@@ -80,11 +80,11 @@ module Homebrew
         args << "--debug" if ARGV.debug?
         args << "--display-cop-names" if ARGV.include? "--display-cop-names"
         args << "--format" << "simple" if files
-        system(cache_env, "rubocop", "_#{HOMEBREW_RUBOCOP_VERSION}_", *args)
+        system(cache_env, "rubocop", *args)
         rubocop_success = $CHILD_STATUS.success?
       when :json
         json, err, status =
-          Open3.capture3(cache_env, "rubocop", "_#{HOMEBREW_RUBOCOP_VERSION}_",
+          Open3.capture3(cache_env, "rubocop",
                          "--format", "json", *args)
         # exit status of 1 just means violations were found; other numbers mean
         # execution errors.

Library/Homebrew/test/Gemfile

@@ -1,13 +1,11 @@
 source "https://rubygems.org"
 
-require_relative "../constants"
-
 gem "parallel_tests"
 gem "rspec"
 gem "rspec-its", require: false
 gem "rspec-retry", require: false
 gem "rspec-wait", require: false
-gem "rubocop", HOMEBREW_RUBOCOP_VERSION
+gem "rubocop"
 
 group :development do
   gem "ronn", require: false

Library/Homebrew/test/Gemfile.lock

@@ -74,7 +74,7 @@ DEPENDENCIES
   rspec-its
   rspec-retry
   rspec-wait
-  rubocop (= 0.60.0)
+  rubocop
   simplecov
   simplecov-cobertura
 

Library/Homebrew/test/cask/cmd/style_spec.rb

@@ -59,21 +59,6 @@ describe Cask::Cmd::Style, :cask do
         expect { subject }.to raise_error(Cask::CaskError)
       end
     end
-
-    specify "`rubocop-cask` supports `HOMEBREW_RUBOCOP_VERSION`", :needs_network do
-      stdout, status = Open3.capture2(
-        "gem", "dependency", "rubocop-cask",
-        "--version", HOMEBREW_RUBOCOP_CASK_VERSION, "--pipe", "--remote"
-      )
-
-      expect(status).to be_a_success
-
-      requirement = Gem::Requirement.new(stdout.scan(/rubocop --version '(.*)'/).flatten.first)
-      version = Gem::Version.new(HOMEBREW_RUBOCOP_VERSION)
-
-      expect(requirement).not_to be_none
-      expect(requirement).to be_satisfied_by(version)
-    end
   end
 
   describe "#cask_paths" do
@@ -150,7 +135,7 @@ describe Cask::Cmd::Style, :cask do
   describe "#default_args" do
     subject { cli.default_args }
 
-    it { is_expected.to include("--require", "rubocop-cask", "--format", "simple") }
+    it { is_expected.to include("--format", "simple") }
   end
 
   describe "#autocorrect_args" do

manpages/brew-cask.1

@@ -104,7 +104,7 @@ Without an argument, display all locally available Casks for install; no online
 .
 .TP
 \fBstyle\fR [\-\-fix] [ \fItoken\fR \.\.\. ]
-Check the given Casks for correct style using RuboCop Cask \fIhttps://github\.com/Homebrew/rubocop\-cask\fR\. If no tokens are given on the command line, all Casks are checked\. With \fB\-\-fix\fR, auto\-correct any style errors if possible\.
+Check the given Casks for correct style using RuboCop (with custom Cask cops)\. If no tokens are given on the command line, all Casks are checked\. With \fB\-\-fix\fR, auto\-correct any style errors if possible\.
 .
 .TP
 \fBuninstall\fR or \fBrm\fR or \fBremove\fR [\-\-force] \fItoken\fR [ \fItoken\fR \.\.\. ]