#! /bin/sh

case "$1" in
    '') dir="$DIR_WALLPAPERS";;
    *) dir="$1";;
esac

# XXX Apparently injecting a filepath with {} is bad: https://github.com/koalaman/shellcheck/wiki/SC2156
#find "$dir" -type f -exec bash -c 'feh --bg-scale "{}"; read' \;
find "$dir" -type f -exec bash -c 'feh --bg-scale "$1"; read' shell '{}' \;