ObjFW  Diff

				if ((c1 & 0xFC00) == 0xDC00) {
					free(buffer);
					return nil;
				}

				/* Normal character */
				if ((c1 & 0xFC00) != 0xD800) {
					l = of_string_unicode_to_utf8(c1,
					    buffer + i);
					if (l == 0) {
						free(buffer);
						return nil;
					}

					i += l;

					free(buffer);
					return nil;
				}

				c = (((c1 & 0x3FF) << 10) |
				    (c2 & 0x3FF)) + 0x10000;

				l = of_string_unicode_to_utf8(c, buffer + i);
				if (l == 0) {
					free(buffer);
					return nil;
				}

				i += l;
				*pointer += 11;

			if ((c1 & 0xFC00) == 0xDC00) {
				free(buffer);
				return nil;
			}

			/* Normal character */
			if ((c1 & 0xFC00) != 0xD800) {
				l = of_string_unicode_to_utf8(c1, buffer + i);
				if (l == 0) {
					free(buffer);
					return nil;
				}

				i += l;
				*pointer += 5;

			if (c2 == 0xFFFF) {
				free(buffer);
				return nil;
			}

			c = (((c1 & 0x3FF) << 10) | (c2 & 0x3FF)) + 0x10000;

			l = of_string_unicode_to_utf8(c, buffer + i);
			if (l == 0) {
				free(buffer);
				return nil;
			}

			i += l;
			*pointer += 11;