Trying this, but it's just passing the text of the admonition block through:

local stringify = (require 'pandoc.utils').stringify

local admonitions = {
  warning   = {pandoc.Str("!!! warning")},
  note      = {pandoc.Str("!!! note")},
  tip       = {pandoc.Str("!!! tip")},
  important = {pandoc.Str("!!! important")},
  caution   = {pandoc.Str("!!! caution")}
  }

function Writer (doc, opts)
  local filter = {
    Div = function (el)
      local admonition_text = admonitions[el.classes[1]]
      if admonition_text then
        table.insert(el.content, 1,
            pandoc.Para{ pandoc.Str(stringify(admonition_text)) })
        local md = pandoc.write(pandoc.Pandoc(el.content), 'markdown')
        return pandoc.RawBlock('markdown', md):gsub('\n', '    \n')
      end
    end
  }
  return pandoc.write(doc:walk(filter), 'markdown', opts)
end

On Thu, Nov 3, 2022 at 9:03 PM Albert Krewinkel <albert+pandoc-9EawChwDxG8hFhg+JK9F0w@public.gmane.org>
wrote:

> You could try with `pandoc.write`. Probably something along the lines of
>
> ``` lua
> local md = pandoc.write(pandoc.Pandoc(div.contents), 'markdown')
> return md:gsub('\n', '    \n')
> ```
>
> (untested)
>
> Aidan Reilly <aireilly-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org> writes:
>
> > Something like this copied from https://jmablog.com/post/
> > pandoc-filters/? My problem is understanding how to add the required
> > indent to every line in the `elem` - If I stringify, I lose the
> > markup (backticks, etc) in the content.
> >
> > function Div (elem)
> >   if FORMAT:match 'latex' then
> >     if elem.classes[1] == "notes" then
> >       return {
> >         pandoc.RawBlock('latex',
> '\\begin{tcolorbox}[colframe=Apricot!20!white, colback=Apricot!8!white]'),
> >         elem,
> >         pandoc.RawBlock('latex', '\\end{tcolorbox}')
> >       }
> >     else
> >       return elem
> >     end
> >   end
> > end
> >
> >
> > On Thu, Nov 3, 2022 at 8:40 PM Aidan Reilly <aireilly-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
> > wrote:
> >
> >     Hi John, sorry - yes I am targeting markdown. Ok I’ll try that
> >     thanks.
> >
> >     Aidan
> >
> >     On Thu 3 Nov 2022 at 20:09, John MacFarlane <
> >     fiddlosopher-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:
> >
> >         I assume you’re targeting markdown?
> >
> >         You could then just create a RawBlock with format “markdown”,
> >         and put this content in it with whatever indentation you
> >         like.
> >
> >
> >         > On Nov 3, 2022, at 9:14 AM, Aidan Reilly <
> >         aireilly-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org> wrote:
> >         >
> >         > Hello!
> >         >
> >         > Trying to figure out how to use pandoc +fenced_div with a
> >         filter to transform this:
> >         >
> >         > ::: note
> >         > Here is the first line of this note.
> >         >
> >         > And the second,
> >         >
> >         > And the third!
> >         > :::
> >         >
> >         > into this:
> >         >
> >         > !!! note
> >         >     Here is the first line of this note.
> >         >
> >         >     And the second,
> >         >
> >         >     And the third!
> >         >
> >         > Struggling to understand if it is possible to "indent"
> >         elements using pandoc. The mkdocs markdown spec requires the
> >         body of notes to be indented by 4 spaces.  Is there a way to
> >         apply indents without stringifying the content?
> >         >
> >         > Thanks!
> >         >
> >         >
> >         > --
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> >         from it, send an email to
> >         pandoc-discuss+unsubscribe-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org
> >         > To view this discussion on the web visit https://
> >         groups.google.com/d/msgid/pandoc-discuss/
> >         ddc82450-b82b-4b8f-9d5f-30c6a28c206fn%40googlegroups.com.
> >
> >         --
> >         You received this message because you are subscribed to a
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> >         unsubscribe.
> >         To unsubscribe from this group and all its topics, send an
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> >         7AF275BD-12EB-4424-84E5-1A45FF675520%40gmail.com.
> >
> >
> >     --
> >
> >     Aidan Reilly
> >
> >     He/Him/His
> >
> >     Senior Technical Writer, Telco (Cork, Ireland)
> >
> >     aireilly-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org
> >
> >     IM/GitHub: aireilly
> >
> >     TEL: +353851261126
> >
> >     [logo]
> >
> >
> >
> > --
> > Aidan
>
>
> --
> Albert Krewinkel
> GPG: 8eed e3e2 e8c5 6f18 81fe  e836 388d c0b2 1f63 1124
>
> --
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> .
>
>

-- 
Aidan

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