From bc3adb457132d18efac15c83fd36c357e09fdc76 Mon Sep 17 00:00:00 2001
From: Adam Lindberg <hello@alind.io>
Date: Wed, 16 Apr 2014 10:34:45 +0200
Subject: [PATCH] Use low level command to detect branches behind

Using git log is subject to formatting in .gitconfig, which can be
overridden and will break this function. Relying on rev-list is much
more stable.
---
 lib/git.zsh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/git.zsh b/lib/git.zsh
index 305a77aff..53657bf19 100644
--- a/lib/git.zsh
+++ b/lib/git.zsh
@@ -54,7 +54,7 @@ git_remote_status() {
 
 # Checks if there are commits ahead from remote
 function git_prompt_ahead() {
-  if $(echo "$(command git log origin/$(current_branch)..HEAD 2> /dev/null)" | grep '^commit' &> /dev/null); then
+  if [[ -n "$(command git rev-list origin/$(current_branch)..HEAD 2> /dev/null)" ]]; then
     echo "$ZSH_THEME_GIT_PROMPT_AHEAD"
   fi
 }