Thanks again for your answers - I would have never come up with Albert's solution.
With this addition, the filter is working fine.
(I should have specified the error message for completeness:
Error running filter remove_tables.lua:
Could not read list: Could not get Block value: expected table, got 'nil' (nil)
)


Albert Krewinkel schrieb am Samstag, 16. Januar 2021 um 18:05:13 UTC+1:
I didn't test it, but I believe this should prevent the error:

elem.caption = {long = {}}

I feel like BPJ's version is morally correct, so I'll create a PR that
would allow it.


BPJ <mel...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> writes:

> It does? I'm away from my work computer ATM so I can't test. Have you tried
> to just return elem without wrapping it in a table? (Not that it should
> make any difference.) Also try to explicitly return nil as a fallback at
> the bottom of the function, although I'm not sure that should make any
> difference either.
>
> --
> Better --help|less than helpless
>
> Den lör 16 jan. 2021 10:24Stephan Boltzmann <stephan2...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
> skrev:
>
>> Thanks again for your answer.
>> I'm not sure whether I understood everything correctly.
>>
>> if FORMAT:match 'latex' then
>> function Table (elem)
>> elem.caption = {}
>> return {elem}
>> end
>> end
>>
>> Gives me an error message.
>>
>> BPJ schrieb am Donnerstag, 14. Januar 2021 um 23:00:07 UTC+1:
>>
>>> You can just return the original table having replaced the caption with
>>> an empty list in place.
>>>
>>>
>>> --
>>> Better --help|less than helpless
>>> Den tors 14 jan. 2021 13:29Stephan Boltzmann <stephan2...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
>>> skrev:
>>>
>>>> Thanks a lot for your hint.
>>>>
>>>> Then I would still have to fix the return statement.
>>>>
>>>> BP schrieb am Donnerstag, 14. Januar 2021 um 11:43:32 UTC+1:
>>>>
>>>>> I think you should use `elem.caption = {}`
>>>>>
>>>>> --
>>>>> Better --help|less than helpless
>>>>>
>>>>> Den tors 14 jan. 2021 10:41Stephan Boltzmann <stephan2...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
>>>>> skrev:
>>>>>
>>>>>> Hello everybody out there using Pandoc,
>>>>>>
>>>>>> I would like to remove the caption from tables in PDF output and tried
>>>>>> a couple of things without success:
>>>>>>
>>>>>> if FORMAT:match 'latex' then
>>>>>> function Table (elem)
>>>>>> --caption = elem.caption
>>>>>> caption = elem.c[2] -- caption seems to be second element
>>>>>> print(pandoc.utils.stringify(caption))
>>>>>> --elem.c[2] = nil
>>>>>> --elem.c[2] = pandoc.Str('Test')
>>>>>> --elem.caption = nil
>>>>>> --elem = nil
>>>>>> --return {pandoc.Table(elem.c)}
>>>>>> --return {elem}
>>>>>> --elem:remove(2)
>>>>>> --table.remove(elem.c,2)
>>>>>> --[[
>>>>>> return {
>>>>>> pandoc.Para(pandoc.Str('test'))
>>>>>> }
>>>>>> --]]
>>>>>> return {
>>>>>> --pandoc.Table(elem.caption, elem.aligns, elem.widths,
>>>>>> elem.headers, elem.rows)
>>>>>> }
>>>>>> end
>>>>>> end
>>>>>>
>>>>>> The main problem could actually rather be the construction of the
>>>>>> table using the function pandoc.Table in the return statement:
>>>>>> Could not read list: Could not get Block value: expected table, got
>>>>>> 'nil' (nil)
>>>>>>
>>>>>> --
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>>>>>> .
>>>>>>
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>>>>
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>> .
>>


--
Albert Krewinkel
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