From a008b0b98713c2837de34aac33bfff4690b38d0e Mon Sep 17 00:00:00 2001
From: "n.st" <git@n-st.de>
Date: Wed, 4 Jun 2014 19:26:46 +0200
Subject: [PATCH] Cancel upgrade if the current user doesn't have write
 permissions for the oh-my-zsh directory.

---
 tools/check_for_upgrade.sh | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/tools/check_for_upgrade.sh b/tools/check_for_upgrade.sh
index 0f8c9c391..5a7ed3515 100644
--- a/tools/check_for_upgrade.sh
+++ b/tools/check_for_upgrade.sh
@@ -22,6 +22,10 @@ fi
 
 [ -f ~/.profile ] && source ~/.profile
 
+# Cancel upgrade if the current user doesn't have write permissions for the
+# oh-my-zsh directory.
+[[ -w "$ZSH" ]] || return 0
+
 if [ -f ~/.zsh-update ]
 then
   . ~/.zsh-update