From cfc5fed7ceb74e04654e51f229f7973350539941 Mon Sep 17 00:00:00 2001
From: Xu Cheng <xucheng@me.com>
Date: Fri, 19 Feb 2016 17:02:20 +0800
Subject: [PATCH] update: fix fork bomb caused by `brew update --help`

Fixes Homebrew/homebrew#49334.

Closes Homebrew/homebrew#49343.

Signed-off-by: Xu Cheng <xucheng@me.com>
---
 Library/Homebrew/cmd/update.sh | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/Library/Homebrew/cmd/update.sh b/Library/Homebrew/cmd/update.sh
index 7124482644..008b1550c8 100644
--- a/Library/Homebrew/cmd/update.sh
+++ b/Library/Homebrew/cmd/update.sh
@@ -252,7 +252,8 @@ homebrew-update() {
   for option in "$@"
   do
     case "$option" in
-      --help) brew update --help; exit $? ;;
+      # TODO: - `brew update --help` should display update subcommand help
+      --help) brew --help; exit $? ;;
       --verbose) HOMEBREW_VERBOSE=1 ;;
       --debug) HOMEBREW_DEBUG=1;;
       --rebase) HOMEBREW_REBASE=1 ;;