Unicorn Library: String Normalization

This is a small module (really just one function), with the specific purpose of converting Unicode strings into the four standard normalization forms.

Normalization functions

enum NormalizationForm
- NFC
- NFD
- NFKC
- NFKD
std::ostream& operator<<(std::ostream& o, NormalizationForm n)

The standard Unicode normalization forms.

template <typename C> basic_string<C> normalize(const basic_string<C>& src, NormalizationForm form)
template <typename C> void normalize_in(basic_string<C>& src, NormalizationForm form)

Convert a string to one of the normalized forms. The normalize() function returns the normalized string, while normalize_in() updates the source string in place. As usual, these functions assume valid Unicode input, and will emit garbage if the input contains invalid UTF encoding.