From f6ec63cd8b2d1999d1f51fa1864bbb2deb4a6d3f Mon Sep 17 00:00:00 2001
From: Mike McQuaid <mike@mikemcquaid.com>
Date: Mon, 26 Sep 2016 08:22:55 +0100
Subject: [PATCH] update.sh: don't restore branch to stable.
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Only run for Homebrew developers so assume they don’t want to switch
back to an old stable branch.

Fixes #1141.
---
 Library/Homebrew/cmd/update.sh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Library/Homebrew/cmd/update.sh b/Library/Homebrew/cmd/update.sh
index 685e0e5f57..03c9693e8d 100644
--- a/Library/Homebrew/cmd/update.sh
+++ b/Library/Homebrew/cmd/update.sh
@@ -299,7 +299,7 @@ EOS
   if [[ -n "$HOMEBREW_NO_UPDATE_CLEANUP" ]]
   then
     if [[ "$INITIAL_BRANCH" != "$UPSTREAM_BRANCH" && -n "$INITIAL_BRANCH" &&
-          ! "$INITIAL_BRANCH" =~ ^v[0-9]+\.[0-9]+\.[0-9]$ ]]
+          ! "$INITIAL_BRANCH" =~ ^v[0-9]+\.[0-9]+\.[0-9]|stable$ ]]
     then
       git checkout "$INITIAL_BRANCH" "${QUIET_ARGS[@]}"
     fi