Refactor CLI::Cat.

Library/Homebrew/cask/lib/hbc/cli/base.rb

@@ -20,6 +20,10 @@ module Hbc
       def self.needs_init?
         false
       end
+
+      def initialize(*args)
+        @args = args
+      end
     end
   end
 end

Library/Homebrew/cask/lib/hbc/cli/cat.rb

@@ -2,7 +2,11 @@ module Hbc
   class CLI
     class Cat < Base
       def self.run(*args)
-        cask_tokens = cask_tokens_from(args)
+        new(*args).run
+      end
+
+      def run
+        cask_tokens = self.class.cask_tokens_from(@args)
         raise CaskUnspecifiedError if cask_tokens.empty?
         # only respects the first argument
         cask_token = cask_tokens.first.sub(/\.rb$/i, "")