Auto-number list continuations

[Albert Krewinkel <albert+pandoc-9EawChwDxG8hFhg+JK9F0w@public.gmane.org>]

Just want to share a little filter that I wrote to automate item
counting in continued lists. E.g.

> i.   one
> #.   another
>
> Interruption; not part of any list.
>
> iii. continue
> #.   keep counting

The filter assumes that a continuation has a start number ≥90 and keeps
track of different list styles.

``` lua
local next_starts = {}

function OrderedList (ol)
  local key = ol.style .. '|' .. ol.delimiter
  if ol.start >= 90 then
    ol.start = next_starts[key] or 1
    next_starts[key] = ol.start + #ol.content
  else
    next_starts[key] = #ol.content + 1
  end

  return ol
end
```

There's also a blog post, but the above is already the gist of it.
https://tarleb.com/posts/list-continuation/

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

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