Lua 5.3.0 (beta) 发布，此版本现已提供测试：http://www.lua.org/work/lua-5.3.0-beta.tar.gz。

MD5 e46b91de3d22a308d3350a14b242e2c7  -
SHA1    0fa2b527611fe3a1b083359ce15e91f27b108eec  -

此版本是个 Beta 版本，有一些特性可能会在最终版本修改。此版本最主要的是引入了 integers，同时还引入了 string.pack 和 string.unpack，用来替换和扩展 string.dump 和 string.undump。

主要改进

• integers (64-bit by default)

• 官方支持 small architectures ("Small Lua" with 32-bit numbers)

• bitwise 操作符

• 支持基础 utf-8

其他改进

Language

• userdata can have any Lua value as uservalue

• integer division

• more flexible rules for some metamethods

• utf-8 escapes in literal strings

Libraries

• basic utf-8 library

• ipairs and the table library respect metamethods

• functions for packing and unpacking numbers

• strip option in string.dump

• table library respects metamethods

• new function table.copy

• new function debug.sizeof

• strip option instring.dumpandlua_dump

C API

• simpler API for continuation functions in C

• new functions:lua_rotate,lua_isyieldable,lua_strtonum,lua_geti,lua_seti

• lua_gettable and similar functions return type of resulted value

Lua standalone interpreter

• can be used as calculator; no need to prefix with '='

• arg table available to all code

更多内容请看这里：

http://www.lua.org/work/diffs-lua-5.3.0-alpha-beta.txt

新闻来源：Lua 5.3.0 (beta) 发布