dromozoa-utf8

Lua 5.3 compatible pure-Lua UTF-8 implementation. Currently, lax optional argument introduced in Lua 5.4 is not supported.

v1.19

• Unicode 16.0

v1.18

• Unicode 15.0
• old luarocks support

v1.17

• maintenance release

v1.16

• Unicode 13.0
• Lua 5.4 like error messages

v1.15

• performance improvement

v1.14

• Unicode 12.1

v1.13

• Unicode 12.0

v1.12

• Unicode 11.0

v1.11

• maintenance release

v1.10

• new function dromozoa.ucd.general_category

v1.9

• new module dromozoa.ucd
• new module dromozoa.utf16

v1.8

• new function dromozoa.ucd.is_white_space

v1.7

• maintenance release

v1.6

• new utility dromozoa-markdown-table
• new module dromozoa.ucd.builder

v1.5

• new function dromozoa.ucd.east_asian_width
• new function dromozoa.utf16.decode_surrogate_pair

v1.4

Features

• table-based performance improvement
• almost compatible argument check
• strict UTF-8 encoding check (do not accept CESU-8)

Performance Improvement

Function	Improvement Ratio
utf8.char	9.9
utf8.codes	1.8
utf8.codepoint	1.8
utf8.len	1.5
utf8.offset (positive)	3.3
utf8.offset (negative)	2.3

Memory Usage

Version	ILP32	LP64/LLP64
v1.3	9KiB	10KiB
v1.4	232KiB	274KiB