strcpy($$, $1);

		int len;

		$$[strlen($$) + 1] = '\0';

		$$[strlen($$)] = $2;

		strncpy2($$, $1, sizeof($$));

		len = strlen($$);

		if (len + 1 < sizeof($$)) {

			$$[len + 1] = '\0';

			$$[len] = $2;

		}

		$$[sizeof($$) - 1] = '\0';