AW: Fenced Div to ConTeXt Environment (was: Markdown Fenced Div to LaTeX Environment)

[<denis.maier-NSENcxR/0n0@public.gmane.org>]

Yep, this is also what I was getting. 

But this minimal shows how to make it work:

```lua -- works
function Div(el)
    return {pandoc.RawBlock('context', "\\start"), el, pandoc.RawBlock('context', "\\stop")}
end
```

vs.

```lua -- does not work!
function Div(el)
    return {pandoc.RawBlock('context', "\\start"), el.content, pandoc.RawBlock('context', "\\stop")}
end
```

So, this here works:

```lua
function context(s)
  return pandoc.RawBlock('context', s)
end

function Div(el)
	if el.classes[1] == 'intro' then
		return { context('\\startintro'), el, context('\\stopintro') }
	end
end
```

Maybe this should be a bit more generic though?

```
function context(s)
  return pandoc.RawBlock('context', s)
end

function Div(el)
	if el.classes[1] == 'intro' or 'question' or 'solution' then
		return { context('\\start'..el.classes[1]), el, context('\\stop'..el.classes[1]) }
	end
end
```

As my lua skills are far below mediocre I bet there ways to make this nicer, e.g. by putting the relevant classes into a table and referring to that. And you may also want to pass arguments from your divs to the context \start...\stop construct. Think of this:

\startquestion[difficulty=easy]

How to build pandoc filters using lua?

\stopquestion?

Denis

> -----Ursprüngliche Nachricht-----
> Von: 'juh' via pandoc-discuss <pandoc-discuss-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org>
> Gesendet: Donnerstag, 17. Juni 2021 09:56
> An: pandoc-discuss-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org
> Betreff: Re: Fenced Div to ConTeXt Environment (was: Markdown Fenced Div
> to LaTeX Environment)
> 
> 
> Am 17.06.21 um 08:54 schrieb BPJ:
> > --filter/-F is for JSON filters. Lua filters need --lua-filter/-L
> 
> Thanks a lot! Now the error message is much more informative.
> 
> This is my filter:
> 
> function context(s)
>    return pandoc.RawBlock('context', s)
> end
> 
> function Div(el)
>    if el.classes[1] == 'intro' then
>      return { context('\\startparagraph{intro}'), el.content,
> context('\\stopparagraph') }
>    end
> end
> 
> 
> This is the error message
> 
> Error running filter filter.lua:
> Could not read list: Could not get Block value: untagged value
> 
> Any hints?
> juh
> 
> --
> You received this message because you are subscribed to the Google Groups
> "pandoc-discuss" group.
> To unsubscribe from this group and stop receiving emails 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/dc8ef20b-4a8b-c385-
> 704c-28c85a5b6820%40mailbox.org.

-- 
You received this message because you are subscribed to the Google Groups "pandoc-discuss" group.
To unsubscribe from this group and stop receiving emails 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/4396a9133ab74e4fbff486f09e22d254%40unibe.ch.