Re: Who is using modified Lua versions, what are they and why?

>
> "continue" patch to for loops


Were you able to port that to Lua 5.5?

On Fri, Jun 26, 2026 at 9:39 PM sur-behoffski <[email protected]>
wrote:

> On 2026-06-27 10:24, 'Sewbacca' via lua-l wrote:
> > Lua is small, readable and easily modifiable which are huge perks.
> However they only come in handy if you are in control of the application
> itself which is running Lua. If you rely on the default distributed Lua
> version, you can't just change the parser. Especially if you are writing
> modules, then you have very little control over the runtime.
> >
> > So out of curiosity: Who is using modified Lua versions, what are the
> modifications and why do you need them?
> G'day,
>
> Although no-one seems to be using lglicua, I included a mechanism
> for explicitly patching a Lua version install.  The main reason for
> this was so that I could add David Sicilia's "continue" patch to
> for loops, so that Lua loops can be written in a style closer to
> that allowed by C.  (I like continue because I abhor deep nesting,
> and "continue" gives me more freedom to handle edge/non-mainstream
> value cases without taking emphasis away from the main body.)
>
> When installing Lua, lglicua always builds from source, regardless
> of the package capabilities of the GNU/Linux OS.  The user can use
> "+feature" to request that a feature patch be applied before make,
> and multiple features/patches can be specified (e.g. "+a+b+z").
> However, there is no attempt to synchronise diff-style patch files
> to cater for differences e.g. in line numbering and/or context
> changes; perhaps an "+a+b" patch might be needed alongside "+a"
> and "+b" patches (and perhaps deny any use of "+b+a"?).
>
> ```
>         BASE/install $ ./i lua-install 5.4+continue
>         BASE/install $ ./i lua-select 5.4
>         BASE/install $ lua -v
>                        Lua 5.4.8 +continue Copyright (C) 1994-2025
> Lua.org, PUC-Rio
>
>         BASE/install $ ./i lua-install 5.4+continue+another
>         BASE/install $ ./i lua-select 5.4
>         BASE/install $ lua -v
>                        Lua 5.4.8 +continue+another Copyright (C) 1994-2025
> Lua.org, PUC-Rio
>
> ```
>
> Although I don't know of any users, this is at least one working
> experiment in preparing customised versions.
>
> [lglicua is available on SourceForge.]
>
> cheers,
> sur-behoffski (Brenton Hoff)
> programmer, Grouse Software
>
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