PROMPT='%{$fg[blue]%}%n%{$reset_color%} on %{$fg[red]%}%M%{$reset_color%} in %{$fg[blue]%}%~%b%{$reset_color%}$(git_time_since_commit)$(check_git_prompt_info)

 $ '

 ZSH_THEME_GIT_PROMPT_PREFIX="%{$fg[white]%}"

 ZSH_THEME_GIT_PROMPT_SUFFIX="%{$reset_color%})"
 

 # Text to display if the branch is dirty
 ZSH_THEME_GIT_PROMPT_DIRTY="%{$fg[red]%}*%{$reset_color%}" 
 
 # Text to display if the branch is clean
 ZSH_THEME_GIT_PROMPT_CLEAN="" 
 
 # Colors vary depending on time lapsed.
 ZSH_THEME_GIT_TIME_SINCE_COMMIT_SHORT="%{$fg[green]%}"
 ZSH_THEME_GIT_TIME_SHORT_COMMIT_MEDIUM="%{$fg[yellow]%}"
 ZSH_THEME_GIT_TIME_SINCE_COMMIT_LONG="%{$fg[red]%}"
 ZSH_THEME_GIT_TIME_SINCE_COMMIT_NEUTRAL="%{$fg[cyan]%}"
 

 
 # Git sometimes goes into a detached head state. git_prompt_info doesn't
 # return anything in this case. So wrap it in another function and check
 # for an empty string.
 function check_git_prompt_info() {
     if git rev-parse --git-dir > /dev/null 2>&1; then
         if [[ -z $(git_prompt_info) ]]; then
             echo "%{$fg[magenta]%}detached-head%{$reset_color%})"
         else
             echo "$(git_prompt_info)"
         fi
     fi
 }
 
 # Determine if we are using a gemset.
 function rvm_gemset() {
     GEMSET=`rvm gemset list | grep '=>' | cut -b4-`
     if [[ -n $GEMSET ]]; then
         echo "%{$fg[yellow]%}$GEMSET%{$reset_color%}|"
     fi 
 
 }
 

 # 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 [[ $(git log 2>&1 > /dev/null | grep -c "^fatal: bad default revision") == 0 ]]; then
             # Get the last commit.
             last_commit=`git log --pretty=format:'%at' -1 2> /dev/null`
             now=`date +%s`
             seconds_since_last_commit=$((now-last_commit))
 
             # Totals
             MINUTES=$((seconds_since_last_commit / 60))
             HOURS=$((seconds_since_last_commit/3600))
            
             # Sub-hours and sub-minutes
             DAYS=$((seconds_since_last_commit / 86400))
             SUB_HOURS=$((HOURS % 24))
             SUB_MINUTES=$((MINUTES % 60))
             
             if [[ -n $(git status -s 2> /dev/null) ]]; then
                 if [ "$MINUTES" -gt 30 ]; then
                     COLOR="$ZSH_THEME_GIT_TIME_SINCE_COMMIT_LONG"
                 elif [ "$MINUTES" -gt 10 ]; then
                     COLOR="$ZSH_THEME_GIT_TIME_SHORT_COMMIT_MEDIUM"
                 else
                     COLOR="$ZSH_THEME_GIT_TIME_SINCE_COMMIT_SHORT"
                 fi
             else
                 COLOR="$ZSH_THEME_GIT_TIME_SINCE_COMMIT_NEUTRAL"
             fi
 
             if [ "$HOURS" -gt 24 ]; then

                 echo "($(rvm_gemset)$COLOR${DAYS}d${SUB_HOURS}h${SUB_MINUTES}m%{$reset_color%}|"

             elif [ "$MINUTES" -gt 60 ]; then

                 echo "($(rvm_gemset)$COLOR${HOURS}h${SUB_MINUTES}m%{$reset_color%}|"

             else

                 echo "($(rvm_gemset)$COLOR${MINUTES}m%{$reset_color%}|"

             fi
         else
             COLOR="$ZSH_THEME_GIT_TIME_SINCE_COMMIT_NEUTRAL"

             echo "($(rvm_gemset)$COLOR~|"

         fi
     fi
 }