Re: Lua Filter for \citeauthor and \citetitle in HTML

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

"Bernardo C. D. A. Vasconcelos" <bernardovasconcelos-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> writes:

> A filter that seems close enough is the bibexport filter at https://
> raw.githubusercontent.com/pandoc/lua-filters/master/bibexport/
> bibexport.lua which I reproduce below:

Newer pandoc versions allow to shorten this to

```
function Pandoc (doc)
  doc.meta.references = pandoc.utils.references(doc)
  doc.meta.bibliography = nil
  return doc
end
```

Here's a "quick n' dirty" filter that should make your `[@key]{.title}`
syntax work:

```
function Pandoc (doc)
  doc.meta.references = pandoc.utils.references(doc)
  doc.meta.bibliography = nil
  return doc:walk{
    Span = function (span)
      -- check that the span contains only a single cite object
      local cite = span.content[1]
      local citations = cite and cite.citations or nil
      if #span.content == 1 and cite.t == 'Cite' and #citations == 1 then
        local cite_id = citations[1].id
        local ref = doc.meta.references:find_if(
          function (r) return cite_id == r.id end
        )
        if ref and span.classes[1] then
          -- replace the span with a specific citation field
          return ref[span.classes[1]]
        end
      end
    end
  }
end
```

It's a bit condensed and not well documented, so let me know if you have
questions.


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