I wouldn't use a custom writer for this.

An easier approach would be to use a wrapper shell script.
The script would peek into the markdown file, find the
setting for --number-offset, and call pandoc with the
same arguments as the shell script PLUS the relevant
--number-offset.


"'Karl Weber' via pandoc-discuss"
<pandoc-...@googlegroups.com> writes:

> Hi John,
>
> thank you for your answer. I would think it should be possible to do that
> with my own custom writer (in Lua). Is that right?
>
> If so, how much work would it be? My starting point would be the sample.lua
> obtained though the command
>
> pandoc --print-default-data-file sampla.lua
>
> Is there an easier way to do this? How close is this sample.lua to what
> pandoc is doing for output format html5? I.e. how much would I have to add
> to sample.lua? Is it only my desired functionality or are there more
> differences? (I am using, for instance, --toc and --sections-div, which
> does not seem to be part of the sample.lua...) I did't find
> template-processing as well, but I am just starting to learn how to build
> my own custom writer...
>
> Im am using pandoc 2.10.1
>
> This solution (if feasible) would have the advantage, that I could add more
> functionality I am currently missing (there may indeed be one or two
> things), but it would also have the disadvantage, that I would have to
> adapt my own custom writer, whenever pandoc evolves. However, this should
> only be necessary if the datamodel of pandoc is changing, or isn't it? I am
> still undecided.
>
> Thanks in advance
> Karl
>
> John MacFarlane schrieb am Montag, 28. September 2020 um 01:02:41 UTC+2:
>
>>
>> No, you can't specify it in YAML metadata.
>>
>> "'Karl Weber' via pandoc-discuss"
>> <pandoc-...@googlegroups.com> writes:
>>
>> > Hi,
>> >
>> > I do want to specify number-offset neither on the commandline of pandoc
>> nor
>> > in the defaults yaml file. The reason is, that I have a project
>> consisting
>> > of a number of documents in markdown format, that I want to convert to
>> > html5 using make. Hence I need to specify number-offset for each file
>> > individually.
>> >
>> > Is there some way to do this?
>> >
>> > I tried to specify it in a yaml block at the beginning of each file,
>> > something like the following:
>> >
>> > ---
>> > output:
>> > html_document:
>> > pandoc_args: [
>> > "--number-offset=4,0"
>> > ]
>> > ---
>> >
>> > I tried different variations of this example, but none worked. Note,
>> that
>> > my input format ist pandoc markdown.
>> >
>> > It would be great, if something like that would work. I would appreciate
>> > any help.
>> >
>> > Thanks in advance,
>> > Karl
>> >
>> >
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>>
>
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