# enable emacs input mode by default
bindkey -e

# set standard PS1
do_colour() {
    local colourise=false

    LS_COLORS=
    eval "$(dircolors -b)"
    if [[ -n ${LS_COLORS:+set} ]]; then
        colourise=true
    else
        unset LS_COLORS
    fi

    if ${colourise} ; then
        if [[ ${EUID} == 0 ]] ; then
            PS1='%B%F{white}%m%f%b %B%F{cyan}%~%f%b %B%F{red}%#%f%b '
        else
            PS1='%n on %B%F{white}%m%f%b %~ %B%F{green}%#%f%b '
        fi
    else
        if [[ ${EUID} == 0 ]] ; then
            # show root@ when we don't have colors
            PS1='! %n on %m %~ %# '
        else
            PS1='%n on %m %~ %# '
        fi
    fi
}

do_colour
unset -f do_colour