Perfect!  This will give me enough to go on with.

On Thu, May 13, 2021 at 3:46 AM Albert Krewinkel <albert+pandoc-9EawChwDxG8hFhg+JK9F0w@public.gmane.org>
wrote:

>
> Norman Ramsey <fellswalker-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> writes:
>
> > luacheck works with one module at a time, so all I need to do is figure
> out
> > the _names_ of the callable objects.  I could poke at metatables or could
> > assume conservatively that all objects are callable.  What I don't know
> how
> > to do is find callable names that _aren't_ materialized in the `pandoc`
> > table but are available only via an `__index` metamethod.
>
> We don't do any metatable magic on the pandoc module itself, so
> iterating over the module table should give us all objects. As BPJ
> points out, some functions are actually callable tables, so we have to
> check for those. Also, the three objects 'Block', 'Inline', and
> 'MetaValue' are callable, but always lead to errors when called.
> Therefore, the following code should print all the names we are after:
>
>     local dont_call = pandoc.List{'Block', 'Inline', 'MetaValue'}
>
>     for k, v in pairs(pandoc) do
>       if not dont_call:includes(k) and
>         (type(v) == 'function' or
>          getmetatable(v) and getmetatable(v).__call) then
>         print(k)
>       end
>     end
>
> The refactored Lua subsystem that I'm working on will do away with these
> silly inconsistencies -- just testing if an object has type "function"
> will be enough.
>
>
> > On Tuesday, May 11, 2021 at 4:21:47 AM UTC-4 BP wrote:
> >
> >> Den tis 11 maj 2021 01:16Norman Ramsey <fells...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> skrev:
> >>
> >>> I've recently discovered `luacheck`, a fantastic static-analysis tool
> for
> >>> Lua programs.  I'd like to use it with my Pandoc filters, but it needs
> a
> >>> configuration to tell it what functions in the global `pandoc` table
> are OK
> >>> to call.  If anybody happens to have made such a configuration, please
> let
> >>> us know.
> >>
> >>
> >> I guess the fact that most of the constructors in the pandoc library are
> >> actually callable objects rather than functions may be a problem one
> way or
> >> another.
>
>
> --
> Albert Krewinkel
> GPG: 8eed e3e2 e8c5 6f18 81fe  e836 388d c0b2 1f63 1124
>
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