Re: Lua filter to process chunkedhtml output

["'William Lupton' via pandoc-discuss" <pandoc-discuss-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org>]

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Re this:

> Also, I tried to print the value of PANDOC_WRITER_OPTIONS, but wlupton's
logging.lua errors on it (bad argument #1 to 'for iterator' (table
expected, got light userdata))

I investigated, and parts of the writer options are "light userdata" (I
hadn't heard of that). I've committed and merged a fix that will report
such items as "<pointer>". You can now list most of the writer options
(just a few colors show as <pointer>).

I'm not sure whether the use of light userdata is intentional here (this
isn't a 3.0 thing; it was already the case in previous versions). Albert?

On Thu, 19 Jan 2023 at 21:32, ChrisD <cd34-gg-4SSc53hpTiu9TMao6EloiEEOCMrvLtNR@public.gmane.org> wrote:

> On 1/19/2023 10:12 AM, John MacFarlane wrote:
> > sitemap.json is really for processing with external tools. If you're
> using a Lua filter, then you can use the new module
> > https://pandoc.org/lua-filters.html#module-pandoc.structure
> I started playing with this, but quickly got confused.
>
> Inside my lua filter, pandoc.structure is nil.  Is this available in a
> filter, or only in a custom writer? Should I be trying to write a custom
> writer rather than a filter?
>
> Is there an example of getting or using the table of contents?
>
> Also, I tried to print the value of PANDOC_WRITER_OPTIONS, but wlupton's
> logging.lua errors on it (bad argument #1 to 'for iterator' (table
> expected, got light userdata)). I the tried the debugging printer I have
> used in the past, kikito's inspect.lua, and it reports its value as "
> <userdata 1>". How do I access writer_options from a filter (for example,
> the toc-depth)? For what it's worth, I can print the value of
> PANDOC_READER_OPTIONS.
>
> Thanks,
>
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