From 78fe082a2b85f097dae7b8333ba66a8fd31ca2d0 Mon Sep 17 00:00:00 2001
From: Alyssa Ross
Date: Sun, 24 Dec 2017 14:56:07 +0000
Subject: cask: exit successfully when given no arguments

Fixes https://github.com/Homebrew/brew/issues/3601.
---
 Library/Homebrew/cask/lib/hbc/cli.rb | 1 +
 1 file changed, 1 insertion(+)

(limited to 'Library/Homebrew/cask')

diff --git a/Library/Homebrew/cask/lib/hbc/cli.rb b/Library/Homebrew/cask/lib/hbc/cli.rb
index a553ad6da..5da2a137a 100644
--- a/Library/Homebrew/cask/lib/hbc/cli.rb
+++ b/Library/Homebrew/cask/lib/hbc/cli.rb
@@ -229,6 +229,7 @@ module Hbc
         purpose
         usage
 
+        return if @command.nil?
         return if @command == "help" && @args.empty?
 
         raise ArgumentError, "help does not take arguments."
-- 
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