Module utf8_lib 

UTF-8 standard library for Lua 5.4.

Port of lutf8lib.c (291 lines, 9 functions).

Provides the utf8 module with char, codepoint, codes, len, offset, and charpattern. Supports both strict (Unicode-conformant) and lax (extended UTF-8, up to MAX_UTF = 0x7FFFFFFF) decoding modes.

Strict mode rejects surrogates (U+D800..U+DFFF) and values above U+10FFFF. Lax mode accepts any well-formed byte sequence with a value ≤ MAX_UTF.

Constants

FUNCS

Function registration table for the utf8 library.

Functions

open_utf8

Open the utf8 library.