Lua 5.1 or 5.2?

[Ketho]

I know /run, /script and addons are not yet available for use in order to print _VERSION, but does anyone know if Blizzard said anything yet about updating to Lua 5.2?

Lua 5.2 has been released since December 2011, and maybe it would help a lot for addon authors to anticipate on it if Blizzard were to update it in MoP

• http://www.lua.org/manual/5.2/manual.html#8
• http://luafaq.org/#T8
• http://lua-users.org/wiki/LuaFiveTwo

[Seerah]

/dump _VERSION prints out "Lua 5.1"

They were probably too far into MoP development to change it by the time it was released.

[suicidalkatt]

How much would 5.2 affect how blizzards own UI functions?

[SDPhantom]

To mention what would be most impacted would be the SecureHandler system as it relies entirely on being able to create independent secure environments.

http://www.lua.org/manual/5.2/manual.html#8 8.1 – Changes in the Language The concept of environment changed. Only Lua functions have environments. To set the environment of a Lua function, use the variable _ENV or the function load. C functions no longer have environments. Use an upvalue with a shared table if you need to keep shared state among several C functions. (You may use luaL_setfuncs to open a C library with all functions sharing a common upvalue.) To manipulate the "environment" of a userdata (which is now called user value), use the new functions lua_getuservalue and lua_setuservalue. 8.2 – Changes in the Libraries Functions setfenv and getfenv were removed, because of the changes in environments.

[TSquared]

Mists of Pandaria will be running lua 5.1.

Currently there are no plans to move WoW's lua engine to 5.2.

[Seerah]

Thanks for the confirmation, TSquared.

[Siku]

Not to be too offtopic but who is TSquared? I mean, other than knowing he's a blizzard employee.

[Phanx]

Maybe Blizzard employees could get bold blue names, the way moderators get bold orange names?

[p3lim]

They might want to stay somewhat anonymous, to avoid PM spam and whatnot.

[Talyrius]

TSquared already has private messages turned off to avoid such nonsense.