#!/bin/sh

set -eu

if [ ! "${1:-}" ]; then
    exit 1
fi

BASEDIR="$(dirname "$1")"

while read -r glob; do
    cd "$BASEDIR"

    while [ "$PWD" != "/" ]; do
        set -- "$glob"

        if [ -e "$1" ]; then
            echo "$PWD"
            exit 0
        fi

        cd ..
    done
done

exit 1