Method PutUtf8

src/core/string_builder.cpp:113–117

* Append UTF.8 char. */

 * Append UTF.8 char.
 */
void BaseStringBuilder::PutUtf8(char32_t c)
{
	auto [buf, len] = EncodeUtf8(c);
	this->PutBuffer({buf, len});
}

/**
 * Append buffer.