Bash prompt with git information (example: `[6@pts] 09:38:52 marc ~/git/gitg [>master|-0|+0]` (with color))

.bashrc

function promptGit()
{
    if [[ -d ./.git ]]; then
        local change_waiting_commit=`if git status | grep -q "nothing to commit (working directory clean)"; then  echo ""; else echo ">"; fi`
        local current_branch=`git rev-parse --symbolic-full-name --abbrev-ref HEAD`
        local commits_behind=`git rev-list --left-right $current_branch...origin/master | grep -c "^>"`
        local commits_ahead=`git rev-list --left-right $current_branch...origin/master | grep -c "^<"`
        echo " [$change_waiting_commit$current_branch|-$commits_behind|+$commits_ahead]"
    fi
}

function promptPerso
{
    local GRAD1=`tty|cut -d/ -f3`
    PS1="\[\033[01;34m\][\#@$GRAD1] \$(date +%H:%M:%S) \[\033[00m\]${debian_chroot:+($debian_chroot)}\[\033[01;32m\]\u\[\033[01;34m\] \[\033[01;31m\]\w\[\033[1;33m\]\$(promptGit) \[\033[01;34m\]\$\[\033[00m\] "
}
promptPerso