Function Compose

src/tests/string_func.cpp:352–358

/* Helper to compose a string from unicode or string parts. */
template <typename... Args>
static std::string Compose(Args &&... args)
{
	std::string result;
	StringBuilder builder(result);
	(ComposePart(builder, args), ...);
	return result;
}

TEST_CASE("FixSCCEncoded")
{