1 files changed, 74 insertions, 3 deletions
diff --git a/lib/git.zsh b/lib/git.zsh
index 8512de8a4..258b1df8f 100644
--- a/lib/git.zsh
+++ b/lib/git.zsh
@@ -4,15 +4,58 @@ function git_prompt_info() {
   echo "$ZSH_THEME_GIT_PROMPT_PREFIX${ref#refs/heads/}$(parse_git_dirty)$ZSH_THEME_GIT_PROMPT_SUFFIX"
 }
 
-parse_git_dirty () {
-  if [[ -n $(git status -s 2> /dev/null) ]]; then
+
+# Checks if working tree is dirty
+parse_git_dirty() {
+  local SUBMODULE_SYNTAX=''
+  if [[ $POST_1_7_2_GIT -gt 0 ]]; then
+        SUBMODULE_SYNTAX="--ignore-submodules=dirty"
+  fi
+  if [[ -n $(git status -s ${SUBMODULE_SYNTAX}  2> /dev/null) ]]; then
     echo "$ZSH_THEME_GIT_PROMPT_DIRTY"
   else
     echo "$ZSH_THEME_GIT_PROMPT_CLEAN"
   fi
 }
 
-# get the status of the working tree
+# get the difference between the local and remote branches
+git_remote_status() {
+    remote=${$(git rev-parse --verify ${hook_com[branch]}@{upstream} --symbolic-full-name 2>/dev/null)/refs\/remotes\/}
+    if [[ -n ${remote} ]] ; then
+        ahead=$(git rev-list ${hook_com[branch]}@{upstream}..HEAD 2>/dev/null | wc -l)
+        behind=$(git rev-list HEAD..${hook_com[branch]}@{upstream} 2>/dev/null | wc -l)
+
+        if [ $ahead -eq 0 ] && [ $behind -gt 0 ]
+        then
+            echo "$ZSH_THEME_GIT_PROMPT_BEHIND_REMOTE"
+        elif [ $ahead -gt 0 ] && [ $behind -eq 0 ]
+        then
+            echo "$ZSH_THEME_GIT_PROMPT_AHEAD_REMOTE"
+        elif [ $ahead -gt 0 ] && [ $behind -gt 0 ]
+        then
+            echo "$ZSH_THEME_GIT_PROMPT_DIVERGED_REMOTE"
+        fi
+    fi
+}
+
+# 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"
+  fi
+}
+
+# Formats prompt string for current git commit short SHA
+function git_prompt_short_sha() {
+  SHA=$(git rev-parse --short HEAD 2> /dev/null) && echo "$ZSH_THEME_GIT_PROMPT_SHA_BEFORE$SHA$ZSH_THEME_GIT_PROMPT_SHA_AFTER"
+}
+
+# Formats prompt string for current git commit long SHA
+function git_prompt_long_sha() {
+  SHA=$(git rev-parse HEAD 2> /dev/null) && echo "$ZSH_THEME_GIT_PROMPT_SHA_BEFORE$SHA$ZSH_THEME_GIT_PROMPT_SHA_AFTER"
+}
+
+# Get the status of the working tree
 git_prompt_status() {
   INDEX=$(git status --porcelain 2> /dev/null)
   STATUS=""
@@ -36,9 +79,37 @@ git_prompt_status() {
   fi
   if $(echo "$INDEX" | grep '^ D ' &> /dev/null); then
     STATUS="$ZSH_THEME_GIT_PROMPT_DELETED$STATUS"
+  elif $(echo "$INDEX" | grep '^AD ' &> /dev/null); then
+    STATUS="$ZSH_THEME_GIT_PROMPT_DELETED$STATUS"
   fi
   if $(echo "$INDEX" | grep '^UU ' &> /dev/null); then
     STATUS="$ZSH_THEME_GIT_PROMPT_UNMERGED$STATUS"
   fi
   echo $STATUS
 }
+
+#compare the provided version of git to the version installed and on path
+#prints 1 if input version <= installed version
+#prints -1 otherwise 
+function git_compare_version() {
+  local INPUT_GIT_VERSION=$1;
+  local INSTALLED_GIT_VERSION
+  INPUT_GIT_VERSION=(${(s/./)INPUT_GIT_VERSION});
+  INSTALLED_GIT_VERSION=($(git --version));
+  INSTALLED_GIT_VERSION=(${(s/./)INSTALLED_GIT_VERSION[3]});
+
+  for i in {1..3}; do
+    if [[ $INSTALLED_GIT_VERSION[$i] -lt $INPUT_GIT_VERSION[$i] ]]; then
+      echo -1
+      return 0
+    fi
+  done
+  echo 1
+}
+
+#this is unlikely to change so make it all statically assigned
+POST_1_7_2_GIT=$(git_compare_version "1.7.2")
+#clean up the namespace slightly by removing the checker function
+unset -f git_compare_version
+
+