Module unicode 

The Unicode normalization forms NFC, NFD, NFKC and NFKD (Unicode Standard Annex 15), the code points that Unicode assigns, and the characters with no display width.

PostgreSQL uses them in normalize, in IS NORMALIZED and in SASLprep. The tables come from the vendored Unicode data of the PostgreSQL pin, so the result is the same as in PostgreSQL. See spec/07-sql-types-and-catalog.md and spec/22-crate-layout.md section 22.8.

Enums

NormalForm

A Unicode normalization form.

Constants

VERSION

The version of Unicode of the tables in the form major.minor, which unicode_version gives.

Functions

combining_class

The canonical combining class of a code point.

is_assigned

True when the code point is assigned, that is, its general category is not Cn.

normalize

Normalizes a string of code points to a form. The input can hold any u32, as unicode_normalize of PostgreSQL can.

normalize_str

Normalizes a str to a form.

zero_width

True when ucs_wcwidth gives the display width 0: the code point 0 and the non-spacing characters.