ObjFW  Diff

		@try {
			id obj;

			if ((obj = va_arg(ctx->args, id)) != nil)
				tmp_len = asprintf(&tmp, ctx->subfmt,
				    [[obj description] cString]);
			else
				if (!append_str(ctx, "(nil)", 5))
				tmp_len = asprintf(&tmp, ctx->subfmt, "(nil)");
					return false;
		} @catch (id e) {
			free(ctx->buf);
			@throw e;
		} @finally {
			[pool release];
		}