LaTeX: Support for biblatex's bibliographies subdivided by keywords?

LaTeX: Support for biblatex's bibliographies subdivided by keywords?

[Alfonso Muskedunder]

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Another question regarding LaTeX features...

biblatex has a handy feature that let's you subdivide your bibliography by 
keywords. Here's a small example:
```
\documentclass{article}

\usepackage[utf8]{inputenc}
\usepackage[style = authoryear]{biblatex}
\usepackage{filecontents}
\begin{filecontents}{test.bib}
  @book{Knu86,
    author = {Knuth, Donald E.},
    year = {1986},
    title = {The \TeX book},
  }
  @book{Nie72,
      author = {Nietzsche, Friedrich},
      title = {Die Geburt der Tragödie aus dem Geiste der Musik},
      year =  {1872},
      keywords = {source},
  }
\end{filecontents}
\addbibresource{test.bib}

\begin{document}

\cites[23]{Knu86}[65]{Nie72}

\printbibheading[%
    heading=bibliography,%
    title={Literaturverzeichnis}]
\printbibliography[%
    keyword=source,%
    heading=subbibliography,
    title={Primärliteratur}]
\printbibliography[%
    notkeyword=source,%
    heading=subbibliography,%
    title={Sekundärliteratur}]
\end{document}
```

Is there a way to incorporate something along these lines into pandoc?

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Re: LaTeX: Support for biblatex's bibliographies subdivided by keywords?

[John MacFarlane]

This is more of a pandoc-citeproc issue.
See https://github.com/jgm/pandoc-citeproc/issues/89

Re: LaTeX: Support for biblatex's bibliographies subdivided by keywords?

[Albert Krewinkel]

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On Sunday, September 23, 2018 at 10:04:17 PM UTC+2, Alfonso Muskedunder 
wrote:
>
> biblatex has a handy feature that let's you subdivide your bibliography by 
> keywords.
>
> Is there a way to incorporate something along these lines into pandoc?
>

I wrote a Lua filter doing something similar as an answer to this 
stackoverflow question: https://stackoverflow.com/q/49707298/2425163
However, one will need to sort the citations into different files for this 
approach to work.

HTH,
-Albert

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Re: LaTeX: Support for biblatex's bibliographies subdivided by keywords?

[Alfonso Muskedunder]

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Thank you Albert!

One thing: In your SO answer, you describe that the two separate 
bibliographies be included in the main document via

"::: {#refs_normal}:::"


Can I ask what the analogous commands would look like in a .tex document?

(FYI, I defined a 'metadata.yaml' file with the lines
"---
bibliography_secondary: test.bib
bibliography_sources: testsources.bib
..."
and tried to convert via "pandoc -s twoseparatebibs_master.tex 
--metadata-file=metadata.yaml --filter pandoc-citeproc 
--lua-filter=multiple-bibliographies.lua -o twoseparatebibs.docx".)


On Monday, September 24, 2018 at 8:51:16 PM UTC+2, Albert Krewinkel wrote:
>
> On Sunday, September 23, 2018 at 10:04:17 PM UTC+2, Alfonso Muskedunder 
> wrote:
>>
>> biblatex has a handy feature that let's you subdivide your bibliography 
>> by keywords.
>>
>> Is there a way to incorporate something along these lines into pandoc?
>>
>
> I wrote a Lua filter doing something similar as an answer to this 
> stackoverflow question: https://stackoverflow.com/q/49707298/2425163
> However, one will need to sort the citations into different files for this 
> approach to work.
>
> HTH,
> -Albert
>

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Re: LaTeX: Support for biblatex's bibliographies subdivided by keywords?

[Albert Krewinkel]

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On Tuesday, September 25, 2018 at 10:05:02 AM UTC+2, Alfonso Muskedunder 
wrote:
>
> One thing: In your SO answer, you describe that the two separate 
> bibliographies be included in the main document via
>
> "::: {#refs_normal}:::"
>
>
> Can I ask what the analogous commands would look like in a .tex document?
>

 This should work: \hypertarget{refs_normal}{}

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Re: LaTeX: Support for biblatex's bibliographies subdivided by keywords?

[Alfonso Muskedunder]

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Thank you very much, I'm nearly there!

The remaining problem: the citations in the text do not appear correctly; 
instead "???" is being printed. In the console, an error message such as 
"pandoc-citeproc: reference Knu86 not found" is printed three times per 
citation.

However, the bibliographies as such work perfectly; every cited reference 
does appear, and they do in the right subbibliography.

Do I have to use a different citation command in the text as well?


On Tuesday, September 25, 2018 at 1:13:34 PM UTC+2, Albert Krewinkel wrote:
>
> On Tuesday, September 25, 2018 at 10:05:02 AM UTC+2, Alfonso Muskedunder 
> wrote:
>>
>> One thing: In your SO answer, you describe that the two separate 
>> bibliographies be included in the main document via
>>
>> "::: {#refs_normal}:::"
>>
>>
>> Can I ask what the analogous commands would look like in a .tex document?
>>
>
>  This should work: \hypertarget{refs_normal}{}
>

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Re: LaTeX: Support for biblatex's bibliographies subdivided by keywords?

[Albert Krewinkel]

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On Tuesday, September 25, 2018 at 1:55:06 PM UTC+2, Alfonso Muskedunder 
wrote:
>
> Thank you very much, I'm nearly there!
>
> The remaining problem: the citations in the text do not appear correctly; 
> instead "???" is being printed. In the console, an error message such as 
> "pandoc-citeproc: reference Knu86 not found" is printed three times per 
> citation.
>

I 'm not 100% sure, but I think I see the problem: pandoc-citeproc is 
called as a filter on the command line before the Lua filter. This means 
that it is also run before the Lua filter. Try removing the `--filter 
pandoc-citeproc` parameter. The Lua filter will do the call to 
pandoc-citeproc itself.

HTH
-Albert

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Re: LaTeX: Support for biblatex's bibliographies subdivided by keywords?

[John MacFarlane]

Albert Krewinkel <albert.krewinkel-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> writes:

> I 'm not 100% sure, but I think I see the problem: pandoc-citeproc is 
> called as a filter on the command line before the Lua filter. This means 
> that it is also run before the Lua filter. Try removing the `--filter 
> pandoc-citeproc` parameter. The Lua filter will do the call to 
> pandoc-citeproc itself.

Also, make sure you don't use `--bibliography` on the
command line, since that will trigger the
pandoc-citeproc filter.

Re: LaTeX: Support for biblatex's bibliographies subdivided by keywords?

[Alfonso Muskedunder]

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Albert, removing `--filter pandoc-citeproc` did the trick!

In fact, consistent with what you wrote, swapping the position of both 
filters is sufficient to get the desired output.

One (minor!) irritating thing remains: With `--filter pandoc-citeproc` 
removed, the console still prints "pandoc-citeproc: reference <XY> not 
found" for every citation in the text - but now two times instead of three. 
(With the citeproc filter at the 'correct' position, it's three, even 
though the output is as desired.)

Thank ye very much!

(PS: I have attached my minimal working example, with the pandoc command in 
the .sh file, just in case...)



On Tuesday, September 25, 2018 at 6:06:39 PM UTC+2, Albert Krewinkel wrote:
>
> On Tuesday, September 25, 2018 at 1:55:06 PM UTC+2, Alfonso Muskedunder 
> wrote:
>>
>> Thank you very much, I'm nearly there!
>>
>> The remaining problem: the citations in the text do not appear correctly; 
>> instead "???" is being printed. In the console, an error message such as 
>> "pandoc-citeproc: reference Knu86 not found" is printed three times per 
>> citation.
>>
>
> I 'm not 100% sure, but I think I see the problem: pandoc-citeproc is 
> called as a filter on the command line before the Lua filter. This means 
> that it is also run before the Lua filter. Try removing the `--filter 
> pandoc-citeproc` parameter. The Lua filter will do the call to 
> pandoc-citeproc itself.
>
> HTH
> -Albert
>

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~/.local/bin/pandoc -s twoseparatebibs_master.tex \
--metadata-file=metadata.yaml \
--lua-filter=multiple-bibliographies.lua \
-o twoseparatebibs.docx --verbose

[-- Attachment #3: testsources.bib --]
[-- Type: text/x-bibtex, Size: 457 bytes --]

%% LaTeX2e file `testsources.bib'
%% generated by the `filecontents' environment
%% from source `twoseparatebibs' on 2018/09/25.
%%
  @book{Bel,
   author = {Bellori},
   title = {Le vite de' pittori, scultori e architetti moderni},
   year = {1672},
   keywords = {source},
  }
  @book{Nie72,
   author = {Nietzsche, Friedrich},
   title = {Die Geburt der Tragödie aus dem Geiste der Musik},
   year =  {1872},
   keywords = {source},
  }

[-- Attachment #4: test.bib --]
[-- Type: text/x-bibtex, Size: 346 bytes --]

%% LaTeX2e file `test.bib'
%% generated by the `filecontents' environment
%% from source `twoseparatebibs' on 2018/09/25.
%%
  @book{Bae,
   author = {Bätschmann, Oskar},
   title = {Pygmalion als Betrachter},
   year = {1985}
  }
  @book{Knu86,
    author = {Knuth, Donald E.},
    year = {1986},
    title = {The \TeX book},
  }

[-- Attachment #5: twoseparatebibs_master.tex --]
[-- Type: text/x-tex, Size: 166 bytes --]


\footcites[23]{Knu86}[65]{Nie72}{Bel}
\cite{Bae}

\chapter{Sekundärliteratur}
\hypertarget{refs_secondary}{}

\chapter{Quellen}
\hypertarget{refs_sources}{}

[-- Attachment #6: metadata.yaml --]
[-- Type: application/octet-stream, Size: 78 bytes --]

---
bibliography_secondary: test.bib
bibliography_sources: testsources.bib
...

[-- Attachment #7: multiple-bibliographies.lua --]
[-- Type: application/octet-stream, Size: 1561 bytes --]

-- file: multiple-bibliographies.lua

--- collection of all cites in the document
local all_cites = {}
--- document meta value
local doc_meta = pandoc.Meta{}

--- Create a bibliography for a given topic. This acts on all divs whose ID
-- starts with "refs", followed by nothings but underscores and alphanumeric
-- characters.
local function create_topic_bibliography (div)
  local name = div.identifier:match('^refs([_%w]*)$')
  if not name then
    return nil
  end
  local tmp_blocks = {
    pandoc.Para(all_cites),
    pandoc.Div({}, pandoc.Attr('refs')),
  }
  local tmp_meta = pandoc.Meta{bibliography = doc_meta['bibliography' .. name]}
  local tmp_doc = pandoc.Pandoc(tmp_blocks, tmp_meta)
  local res = pandoc.utils.run_json_filter(tmp_doc, 'pandoc-citeproc')
  -- first block of the result contains the dummy para, second is the refs Div
  div.content = res.blocks[2].content
  return div
end

local function resolve_doc_citations (doc)
  -- combine all bibliographies
  local meta = doc.meta
  local orig_bib = meta.bibliography
  meta.bibliography = pandoc.MetaList{orig_bib}
  for name, value in pairs(meta) do
    if name:match('^bibliography_') then
      table.insert(meta.bibliography, value)
    end
  end
  doc = pandoc.utils.run_json_filter(doc, 'pandoc-citeproc')
  doc.meta.bibliography = orig_bib -- restore to original value
  return doc
end

return {
  {
    Cite = function (c) all_cites[#all_cites + 1] = c end,
    Meta = function (m) doc_meta = m end,
  },
  {Pandoc = resolve_doc_citations,},
  {Div = create_topic_bibliography,}
}

Re: LaTeX: Support for biblatex's bibliographies subdivided by keywords?

[Albert Krewinkel]

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I'm happy to hear that it's working! :)

On Tuesday, September 25, 2018 at 6:57:39 PM UTC+2, Alfonso Muskedunder 
wrote:

> One (minor!) irritating thing remains: With `--filter pandoc-citeproc` 
> removed, the console still prints "pandoc-citeproc: reference <XY> not 
> found" for every citation in the text - but now two times instead of three. 
> (With the citeproc filter at the 'correct' position, it's three, even 
> though the output is as desired.)
>

The warnings are annoying, but harmless. It is possible to get rid of them, 
but the filter must be rewritten for that. I'm going publish the result at 
the [lua-filters repo] when I'm done.

Cheers!
-Albert

[lua-filters repo]: https://github.com/pandoc/lua-filters

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