ObjFW  Diff

	if (str->is_utf8)
		is_utf8 = YES;

	return self;
}

- appendWithFormat: (OFString*)fmt, ...
- appendFormat: (OFString*)fmt, ...
{
	id ret;
	va_list args;

	va_start(args, fmt);
	ret = [self appendWithFormat: fmt
			   arguments: args];
	ret = [self appendFormat: fmt
		   withArguments: args];
	va_end(args);

	return ret;
}

- appendWithFormat: (OFString*)fmt
	 arguments: (va_list)args
-  appendFormat: (OFString*)fmt
  withArguments: (va_list)args
{
	char *t;

	if (fmt == NULL)
		@throw [OFInvalidFormatException newWithClass: isa];
	if (fmt == nil)
		@throw [OFInvalidArgumentException newWithClass: isa
						       selector: _cmd];

	if ((vasprintf(&t, [fmt cString], args)) == -1)
	if ((vasprintf(&t, [fmt cString], args)) == -1) {
		/*
		 * This is only the most likely error to happen. Unfortunately,
		 * there is no good way to check what really happened.
		 */
		@throw [OFOutOfMemoryException newWithClass: isa];
	}

	@try {
		[self appendCString: t];
	} @finally {
		free(t);
	}