void
list_cur_tag(const Arg *arg) {
	Client *c;
	FILE *f;

	if(!arg || !arg->v || !selmon)
		return;

	f = fopen(arg->v, "w");
	if(!f){
		fprintf(stderr, "open %s: %s\n", arg->v, strerror(errno));
		return;
	}

	for(c = selmon->clients; c; c = c->next)
		if(ISVISIBLE(c))
			fprintf(f, "%s\n", c->name);

	fclose(f);
}