From ef34fbc634ffa6457f5ef043e39b3aedd31cd4cd Mon Sep 17 00:00:00 2001
From: Mike McQuaid <mike@mikemcquaid.com>
Date: Sun, 1 Dec 2019 14:19:26 +0000
Subject: [PATCH 1/3] cask/cmd/style: don't hide warnings.

These sometimes display useful RuboCop deprecations.
---
 Library/Homebrew/cask/cmd/style.rb | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Library/Homebrew/cask/cmd/style.rb b/Library/Homebrew/cask/cmd/style.rb
index 6f7a368d57..06dfc45f82 100644
--- a/Library/Homebrew/cask/cmd/style.rb
+++ b/Library/Homebrew/cask/cmd/style.rb
@@ -13,7 +13,7 @@ module Cask
         Homebrew.install_bundler_gems!
 
         cache_env = { "XDG_CACHE_HOME" => "#{HOMEBREW_CACHE}/style" }
-        hide_warnings = debug ? [] : [ENV["HOMEBREW_RUBY_PATH"], "-W0", "-S"]
+        hide_warnings = debug ? [] : [ENV["HOMEBREW_RUBY_PATH"], "-S"]
 
         args = [
           "--force-exclusion",

From 2101de77cf4e629c1cffcf9a3fc6dad2fc379259 Mon Sep 17 00:00:00 2001
From: Mike McQuaid <mike@mikemcquaid.com>
Date: Sun, 1 Dec 2019 14:20:11 +0000
Subject: [PATCH 2/3] .rubocop_cask: fix RuboCop names.

Broken since a RuboCop update.
---
 Library/.rubocop_cask.yml | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/Library/.rubocop_cask.yml b/Library/.rubocop_cask.yml
index 938acb0afe..d779e664d4 100644
--- a/Library/.rubocop_cask.yml
+++ b/Library/.rubocop_cask.yml
@@ -26,10 +26,10 @@ Layout/HashAlignment:
   EnforcedHashRocketStyle: table
   EnforcedColonStyle: table
 
-Layout/IndentFirstArrayElement:
+Layout/FirstArrayElementIndentation:
   EnforcedStyle: align_brackets
 
-Layout/IndentFirstHashElement:
+Layout/FirstHashElementIndentation:
   EnforcedStyle: align_braces
 
 # Casks often contain long URLs and file paths.

From c1b00297e0556197a21155a44876e3422e8f4b1e Mon Sep 17 00:00:00 2001
From: Mike McQuaid <mike@mikemcquaid.com>
Date: Sun, 1 Dec 2019 15:04:30 +0000
Subject: [PATCH 3/3] cask/cmd/style_spec: add rubocop test.

This verifies the cask configuration hasn't been broken.
---
 Library/Homebrew/test/cask/cmd/style_spec.rb | 30 ++++++++++++++++++++
 1 file changed, 30 insertions(+)

diff --git a/Library/Homebrew/test/cask/cmd/style_spec.rb b/Library/Homebrew/test/cask/cmd/style_spec.rb
index 447a465f58..5767740cb2 100644
--- a/Library/Homebrew/test/cask/cmd/style_spec.rb
+++ b/Library/Homebrew/test/cask/cmd/style_spec.rb
@@ -10,6 +10,36 @@ describe Cask::Cmd::Style, :cask do
 
   it_behaves_like "a command that handles invalid options"
 
+  describe ".rubocop" do
+    subject { described_class.rubocop(cask_path) }
+
+    around do |example|
+      FileUtils.ln_s HOMEBREW_LIBRARY_PATH, HOMEBREW_LIBRARY/"Homebrew"
+      FileUtils.ln_s HOMEBREW_LIBRARY_PATH.parent/".rubocop_cask.yml", HOMEBREW_LIBRARY/".rubocop_cask.yml"
+      FileUtils.ln_s HOMEBREW_LIBRARY_PATH.parent/".rubocop_shared.yml", HOMEBREW_LIBRARY/".rubocop_shared.yml"
+
+      example.run
+    ensure
+      FileUtils.rm_f HOMEBREW_LIBRARY/"Homebrew"
+      FileUtils.rm_f HOMEBREW_LIBRARY/".rubocop_cask.yml"
+      FileUtils.rm_f HOMEBREW_LIBRARY/".rubocop_shared.yml"
+    end
+
+    before do
+      allow(Homebrew).to receive(:install_bundler_gems!)
+    end
+
+    context "with a valid Cask" do
+      let(:cask_path) do
+        Pathname.new("#{HOMEBREW_LIBRARY}/Homebrew/test/support/fixtures/cask/Casks/version-latest.rb")
+      end
+
+      it "returns true" do
+        expect(subject.success?).to be true
+      end
+    end
+  end
+
   describe "#cask_paths" do
     subject { cli.cask_paths }