ObjFW  Check-in [eeaee04433]

	 * @"" literal.
	 */
	if ((ret_c = malloc((length * 3) + 1)) == NULL)
		@throw [OFOutOfMemoryException newWithClass: isa
						    andSize: (length * 3) + 1];

	for (i = 0; *s != '\0'; s++) {
		if (isalnum(*s) || *s == '-' || *s == '_' || *s == '.')
		if (isalnum(*s) || *s == '-' || *s == '_' || *s == '.' ||
		    *s == '~')
			ret_c[i++] = *s;
		else {
			char buf[3];
			snprintf(buf, 3, "%02X", *s);
			ret_c[i++] = '%';
			ret_c[i++] = buf[0];
			ret_c[i++] = buf[1];

	CHECK([[a objectAtIndex: j++] isEqual: @"bar"])
	CHECK([[a objectAtIndex: j++] isEqual: @""])
	CHECK([[a objectAtIndex: j++] isEqual: @"baz"])
	CHECK([[a objectAtIndex: j++] isEqual: @""])
	CHECK([[a objectAtIndex: j++] isEqual: @""])

	/* URL encoding tests */
	CHECK([[@"foo\"ba'_~$" stringByURLEncoding]
	CHECK([[@"foo\"ba'_$" stringByURLEncoding] isEqual: @"foo%22ba%27_%24"])
	    isEqual: @"foo%22ba%27_~%24"])
	CHECK([[@"foo%20bar%22+%24" stringByURLDecoding]
	    isEqual: @"foo bar\" $"])
	CHECK_EXCEPT([@"foo%bar" stringByURLDecoding],
	    OFInvalidEncodingException)
	CHECK_EXCEPT([@"foo%FFbar" stringByURLDecoding],
	    OFInvalidEncodingException)