From 303fb7286ca5151d5454d435a193024650d3bdf2 Mon Sep 17 00:00:00 2001
From: Jan Gosmann <jan@hyper-world.de>
Date: Sat, 25 Feb 2012 22:43:40 +0100
Subject: [PATCH] More detailed git prompt information.

Possibility to also display if a branch is behind, has diverged or is up-to-date.
Also changed the implementation to use git-rev-list which is a bit easier than
git-log.
---
 lib/git.zsh | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/lib/git.zsh b/lib/git.zsh
index 534c1072c..844a31d16 100644
--- a/lib/git.zsh
+++ b/lib/git.zsh
@@ -22,8 +22,16 @@ parse_git_dirty() {
 
 # Checks if there are commits ahead from remote
 function git_prompt_ahead() {
-  if $(echo "$(git log origin/$(current_branch)..HEAD 2> /dev/null)" | grep '^commit' &> /dev/null); then
-    echo "$ZSH_THEME_GIT_PROMPT_AHEAD"
+  ahead=$(git rev-list origin/$(current_branch)..HEAD -- 2> /dev/null)
+  behind=$(git rev-list HEAD..origin/$(current_branch) -- 2> /dev/null)
+  if [[ -n $ahead && -n $behind ]]; then
+      echo "$ZSH_THEME_GIT_PROMPT_DIVERGED"
+  elif [[ -n $ahead ]]; then
+      echo "$ZSH_THEME_GIT_PROMPT_AHEAD"
+  elif [[ -n $behind ]]; then
+      echo "$ZSH_THEME_GIT_PROMPT_BEHIND"
+  else
+      echo "$ZSH_THEME_GIT_PROMPT_UPTODATE"
   fi
 }