Thanks Albert!

I really appreciate you looking at this. When I run the above, I get this error: 

Error running filter admonitions.lua:
admonitions.lua:10: attempt to index a nil value (local 'opts')
stack traceback:
admonitions.lua:10: in main chunk

Do I need to specify something in the command line? I'm running the build like so: 

asciidoctor -b docbook -o - $PAGE | pandoc  --markdown-headings=atx --shift-heading-level-by=1 --wrap=none -t markdown+backtick_code_blocks --lua-filter=admonitions.lua -f docbook - > ./docs/$PAGE.md

On Sat, Nov 5, 2022 at 8:19 AM Albert Krewinkel <albert+pandoc-9EawChwDxG8hFhg+JK9F0w@public.gmane.org> wrote:

Aidan Reilly <aireilly-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org> writes:

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

The order of spaces and newline in the replacement was switched. After
some playing around, this is the filter I came up with:

``` lua
local admonitions = {
  warning   = '!!! warning',
  note      = '!!! note',
  tip       = '!!! tip',
  important = '!!! important',
  caution   = '!!! caution'
}

local opts = PANDOC_WRITER_OPTIONS -- reuse options to render snippets
opts.columns = opts.columns - 4    -- admons are indented by four spaces
opts.template = nil                -- render a snippet

function Div (div)
  local admonition_text = admonitions[div.classes[1]]
  if not admonition_text then return nil end  -- not an admonition: bail

  local md = admonition_text .. '\n' ..
    pandoc.write(pandoc.Pandoc(div.content), 'markdown', opts)
  return pandoc.RawBlock(
    'markdown',
    md:gsub('\n*$', '')     -- remove trailing newlines
      :gsub('\n', '\n    ') -- indent block
  )
end
```


--
Albert Krewinkel
GPG: 8eed e3e2 e8c5 6f18 81fe  e836 388d c0b2 1f63 1124

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Aidan