Class dirent

util-unix.cpp:198–198

		//  http://austingroupbugs.net/view.php?id=696
		//  http://man7.org/linux/man-pages/man3/readdir_r.3.html
		while (struct dirent* ent = readdir(dir)) {
			if (!(std::strcmp(ent->d_name, ".") == 0 || std::strcmp(ent->d_name, "..") == 0)) {
				contents.push_back(ent->d_name);
			}