From f629bb4e0f5fe03926642ef06107e0101f4c9bcc Mon Sep 17 00:00:00 2001
From: Baptiste Fontaine <batifon@yahoo.fr>
Date: Tue, 29 Sep 2015 15:39:08 +0200
Subject: [PATCH] command: fail early if no command is given

Closes Homebrew/homebrew#44450.

Signed-off-by: Baptiste Fontaine <batifon@yahoo.fr>
---
 Library/Homebrew/cmd/command.rb | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Library/Homebrew/cmd/command.rb b/Library/Homebrew/cmd/command.rb
index 6ddd898be3..4790a69524 100644
--- a/Library/Homebrew/cmd/command.rb
+++ b/Library/Homebrew/cmd/command.rb
@@ -1,5 +1,6 @@
 module Homebrew
   def command
+    abort "This command requires a command argument" if ARGV.empty?
     cmd = ARGV.first
     cmd = HOMEBREW_INTERNAL_COMMAND_ALIASES.fetch(cmd, cmd)