function setPromt {
    if [ "$color_prompt" != yes ]; then
        PS1='${debian_chroot:+($debian_chroot)}\u@\h:\w\$ '
        return
    fi
    case "$TERM" in
    xterm*|rxvt*)
        ;;
    *)
        PS1='${debian_chroot:+($debian_chroot)}\u@\h:\w\$ '
        return
        ;;
    esac
    PROMPT_COMMAND=updatePromt
    PS2="|"
}
function updatePromt {
    local prev_exit="$?"
    # color_helper_>>color<< (Note: \[\]= escaping)
    local chR="\[\e[1;91m\]"      #red
    local chW="\[\033[00m\]"      #white
    local chG="\[\033[01;32m\]"   #green
    local chB="\[\033[0;34m\]"    #blue
    local chP="\[\033[0;35m\]"    #purple
    local chY="\[\033[0;33m\]"    #yellow
    PS1=""
    if [ $prev_exit == 0 ]; then
        PS1+="$chG✓ $chW"
    else
        PS1+="$chR✗ $chW"
    fi
    local jobs="$(jobs | wc -l)"
    if [ $jobs != 0 ]; then
        PS1+="${chY}≡$jobs$chW"
    fi
    PS1+="${debian_chroot:+($debian_chroot)}"
    PS1+=" At ${chG}\A${chW}"
    PS1+=" by ${chP}\u${chW}"
    if sudo -n true 2>/dev/null; then
        PS1+="${chR} (sudo)${chW}"
    fi
    PS1+=" in "
    if \git rev-parse --is-inside-work-tree >/dev/null 2>&1; then
        local branch="$(\git symbolic-ref -q HEAD)"
        PS1+="[${branch#refs/heads/}"
        local status="$(git for-each-ref --format='%(upstream:trackshort)' refs/heads | awk '!seen[$1]++ {printf $1}')"
        status+="$(git status --porcelain | awk '!seen[$1]++ {printf $1}')"
        if [ "$statua"s ]; then
            PS1+="|$chY$status$chW"
        fi
        PS1+="] "
    fi
    PS1+="${chB}\w${chW}"
    PS1+="\n:"
    history -a
}
setPromt
unset color_prompt
unset -f setPromt

# vim: set filetype=sh tabstop=4 shiftwidth=4 textwidth=250 expandtab :