From 0a0e2fa0c15b0110b1f765be906ddc6faa5a2067 Mon Sep 17 00:00:00 2001
From: Mike McQuaid <mike@mikemcquaid.com>
Date: Sat, 12 Jan 2019 19:16:44 +0000
Subject: [PATCH] cli_parser: output help failure text to stderr.

---
 Library/Homebrew/cli_parser.rb | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Library/Homebrew/cli_parser.rb b/Library/Homebrew/cli_parser.rb
index e487e8580a..01310d42e3 100644
--- a/Library/Homebrew/cli_parser.rb
+++ b/Library/Homebrew/cli_parser.rb
@@ -126,7 +126,7 @@ module Homebrew
         begin
           remaining_args = @parser.parse(cmdline_args)
         rescue OptionParser::InvalidOption => e
-          puts generate_help_text
+          $stderr.puts generate_help_text
           raise e
         end
         check_constraint_violations