[ -z $XDG_CONFIG_HOME ] && XDG_CONFIG_HOME="$HOME/.config"
if [ ! -d $XDG_CONFIG_HOME ]; then
    if [ -e $XDG_CONFIG_HOME ]; then
        echo "$SELF: error: $XDG_CONFIG_HOME exists but is not a directory" >&2
        return 2
    else
        mkdir $XDG_CONFIG_HOME || echo "$SELF: error: could not create $XDG_CONFIG_HOME" >&2
        return 2
    fi
fi