// `\` is escaped by step 3
        /(\\)?\[([^\]/]*?)(\\*)($|\])/g,
        (match, leadEscape, range, endEscape, close) => leadEscape === ESCAPE
            // '\\[bar]' -> '\\\\[bar\\]'
            ? `\\[${range}${cleanRangeBackSlash(endEscape)}${close}`
            : close === ']'
                ? endEscape.length % 2 === 0
                    // A normal case, and it is a range notation

					return;
				}
				const n = this.writeSync(fd, buf);
				callback(null, n);
			},
			chmod(path, mode, callback) { callback(enosys()); },
			chown(path, uid, gid, callback) { callback(enosys()); },
			close(fd, callback) { callback(enosys()); },
			fchmod(fd, mode, callback) { callback(enosys()); },
			fchown(fd, uid, gid, callback) { callback(enosys()); },
			fstat(fd, callback) { callback(enosys()); },