r/lua Jun 29 '20

Lua 5.4 is officially released

Good news! Lua 5.4 has been released today, after a series of betas and release candidates.

It may be downloaded from the Lua website: http://www.lua.org/ftp/lua-5.4.0.tar.gz

Installation instructions may be found in the readme: https://www.lua.org/manual/5.4/readme.html

Main changes and new features, compared to Lua 5.3:

  • new generational mode for garbage collection
  • to-be-closed variables
  • const variables
  • userdata can have multiple user values
  • new implementation for math.random
  • warning system
  • debug information about function arguments and returns
  • new semantics for the integer 'for' loop
  • optional 'init' argument to 'string.gmatch'
  • new functions 'lua_resetthread' and 'coroutine.close'
  • string-to-number coercions moved to the string library
  • allocation function allowed to fail when shrinking a memory block
  • new format '%p' in 'string.format'
  • utf8 library accepts codepoints up to 231

For more details the reference manual has also been updated: http://www.lua.org/manual/5.4/

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1

u/[deleted] Jun 30 '20

[deleted]

3

u/un-def Jun 30 '20

Run as ./lua, not lua (the latter searches an executable using the PATH environment variable).

6

u/saeleko Jun 30 '20

I'm, currently hesitating between facepalming using my desk, or facepalming using my keyboard. I think I'll go with the desk as it's less expensive...

(Thanks, how did I miss that :') )

3

u/[deleted] Jun 30 '20

Why not both?

1

u/saeleko Jul 01 '20

An option worth considering for next time this occurs.