Improved the `_git_time_since_commit` function.

Check for at least one commit using a `git log` limit of one.

Improves the performance inside git repos with a large history.

themes/avit.zsh-theme

@@ -38,9 +38,8 @@ function _ruby_version() {
 # Determine the time since last commit. If branch is clean,
 # use a neutral color, otherwise colors will vary according to time.
 function _git_time_since_commit() {
-  if git rev-parse --git-dir > /dev/null 2>&1; then
 # Only proceed if there is actually a commit.
-    if [[ $(git log 2>&1 > /dev/null | grep -c "^fatal: bad default revision") == 0 ]]; then
+  if git log -1 > /dev/null 2>&1; then
     # Get the last commit.
     last_commit=$(git log --pretty=format:'%at' -1 2> /dev/null)
     now=$(date +%s)
@@ -66,7 +65,6 @@ function _git_time_since_commit() {
     color=$ZSH_THEME_GIT_TIME_SINCE_COMMIT_NEUTRAL
     echo "$color$commit_age%{$reset_color%}"
   fi
-  fi
 }
 
 if [[ $USER == "root" ]]; then
@@ -99,4 +97,3 @@ ZSH_THEME_GIT_TIME_SINCE_COMMIT_NEUTRAL="%{$fg[grey]%}"
 export LSCOLORS="exfxcxdxbxegedabagacad"
 export LS_COLORS='di=34;40:ln=35;40:so=32;40:pi=33;40:ex=31;40:bd=34;46:cd=34;43:su=0;41:sg=0;46:tw=0;42:ow=0;43:'
 export GREP_COLOR='1;33'
-