From e877a52fa6c0dc9dd91998305037f588e7394246 Mon Sep 17 00:00:00 2001
From: Zach Auten <zachauten@gmail.com>
Date: Thu, 14 May 2020 00:31:14 -0400
Subject: [PATCH] Fix exception when calling "brew cask" with --help and no
 subcommand

---
 Library/Homebrew/cask/cmd.rb | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/Library/Homebrew/cask/cmd.rb b/Library/Homebrew/cask/cmd.rb
index a65cee3949..af03b04385 100644
--- a/Library/Homebrew/cask/cmd.rb
+++ b/Library/Homebrew/cask/cmd.rb
@@ -243,6 +243,10 @@ module Cask
         $stderr.puts
         $stderr.puts Help.usage
       end
+
+      def help
+        run
+      end
     end
   end
 end