## vim:ft=zsh
## Written by Frank Terbeck <ft@bewatermyfriend.org>
## Distributed under the same BSD-ish license as zsh itself.

setopt localoptions extendedglob NO_shwordsplit
local base=${1%%/##}

[[ ${PWD} == ${base}/* ]] || {
    printf '.'
    return 1
}
printf '%s' ${PWD#$base/}
return 0