Method PeekUntilCharIn

src/core/string_consumer.hpp:639–643

* Peek 8-bit chars, while they are not in 'chars', until they are. * @return Non-matching chars. */

	 * @return Non-matching chars.
	 */
	[[nodiscard]] std::string_view PeekUntilCharIn(std::string_view chars) const
	{
		size_type len = this->FindCharIn(chars);
		return this->Peek(len);
	}
	/**
	 * Read 8-bit chars, while they are not in 'chars', until they are; and advance reader.
	 * @return Non-matching chars.