From e8ebcb834bcd54aa555b52cc6a06bf05e8b5ac1a Mon Sep 17 00:00:00 2001
From: Mike McQuaid <mike@mikemcquaid.com>
Date: Sun, 18 Sep 2016 19:59:56 +0100
Subject: [PATCH] update.sh: allow forcing tag update.

To test the tag update functionality allow setting
`HOMEBREW_UPDATE_TO_TAG`.
---
 Library/Homebrew/brew.sh       | 2 +-
 Library/Homebrew/cmd/update.sh | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/Library/Homebrew/brew.sh b/Library/Homebrew/brew.sh
index fc2e6993c5..e82f7098a5 100644
--- a/Library/Homebrew/brew.sh
+++ b/Library/Homebrew/brew.sh
@@ -1,4 +1,4 @@
-HOMEBREW_VERSION="0.9.9"
+HOMEBREW_VERSION="1.0.0"
 
 onoe() {
   if [[ -t 2 ]] # check whether stderr is a tty.
diff --git a/Library/Homebrew/cmd/update.sh b/Library/Homebrew/cmd/update.sh
index 570a4c36bd..eb15e10291 100644
--- a/Library/Homebrew/cmd/update.sh
+++ b/Library/Homebrew/cmd/update.sh
@@ -348,7 +348,7 @@ EOS
     set -x
   fi
 
-  if [[ -z "$HOMEBREW_UPDATE_CLEANUP" ]]
+  if [[ -z "$HOMEBREW_UPDATE_CLEANUP" && -z "$HOMEBREW_UPDATE_TO_TAG" ]]
   then
     if [[ -n "$HOMEBREW_DEVELOPER" || -n "$HOMEBREW_DEV_CMD_RUN" ]]
     then