From b7a51eab6be0d62674231699d513db310df608b8 Mon Sep 17 00:00:00 2001
From: Martin Schimandl <martin.schimandl@gmail.com>
Date: Tue, 3 Oct 2017 19:35:43 +0200
Subject: [PATCH] improve 'brew cask _stanza' by checking for known stanzas

---
 Library/Homebrew/cask/lib/hbc/cli/internal_stanza.rb | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/Library/Homebrew/cask/lib/hbc/cli/internal_stanza.rb b/Library/Homebrew/cask/lib/hbc/cli/internal_stanza.rb
index c046197989..1b15d9386b 100644
--- a/Library/Homebrew/cask/lib/hbc/cli/internal_stanza.rb
+++ b/Library/Homebrew/cask/lib/hbc/cli/internal_stanza.rb
@@ -43,6 +43,10 @@ module Hbc
         @stanza = args.shift.to_sym
 
         @format = :to_yaml if yaml?
+
+        unless DSL::DSL_METHODS.include?(stanza)
+          raise ArgumentError, "Illegal stanza: '#{stanza}'"
+        end
       end
 
       def run