Function fetch_env

src/utils/utils.c:27–33

* On X, use xauthority * On Wl, use xdg_runtime_dir * Otherwise, use NULL (unneeded with drm plugin) */

 * Otherwise, use NULL (unneeded with drm plugin)
 */
const char *fetch_env() {
    const char *xauth = getenv("XAUTHORITY");
    if (!is_string_empty(xauth)) {
        return xauth;
    }
    return getenv("XDG_RUNTIME_DIR");
}

/*
 * Only used by gamma and dpms -> in case our display is empty,