'bibio-files' variable not set when 'bibliography' field is specified in YAML metadata

[andrewmwhite]

It appears that the 'bibio-files' template variable is not set when the 'bibliography' field is specified in YAML metadata (without '--bibliography' on the command line).

mwe.md:

---
bibliography: mwe.bib
...

Pandoc is great [@pandoc].

mwe.bib:

@misc{pandoc,
  title = {Pandoc: A Universal Document Converter},
  howpublished = {http://johnmacfarlane.net/pandoc},
}

Output with '--bibliography' (as expected):

> pandoc --biblatex --filter pandoc-citeproc --bibliography=mwe.bib -t latex mwe.md | grep bib
\usepackage{biblatex}
\bibliography{mwe}
\printbibliography

Should be the same, but the '\bibliography{mwe}' line is missing:

> pandoc --biblatex --filter pandoc-citeproc -t latex mwe.md | grep bib
\usepackage{biblatex}
\printbibliography

Side note: the '\bibliography' command is deprecated (according to the biblatex manual) and has been replaced with '\addbibresource'.

Version info:

> pandoc --version                                                                                                                                                                                           
pandoc 1.13.1
Compiled with texmath 0.8, highlighting-kate 0.5.9.
<snip>
> pandoc-citeproc --version                                                                                                                                                                                pandoc-citeproc 0.6

[azrdev]

Can confirm that.

> pandoc --version
pandoc 1.12.3.3
...
> pandoc-citeproc --version
pandoc-citeproc 0.3.1

[lierdakil]

Actually, this is expected behavior and not in any way a bug, according to README and changelog. It may be a reasonable enhancement though.

[jgm]

See also #1849, which should be fixed at the same time.

[jgm]

I think what makes sense for this issue and #1849 is the following:

• [x] Replace biblio-files with bibliography in the latex and beamer templates.
• [x] Remove biblio-files specific code from pandoc.hs.
• [x] Remove refs to biblio-files in README.
• [x] Change pandoc.hs so it sets implicit -F pandoc-citeproc only if the command line option --bibliography is used, and not if there is a metadata bibliography field. (Currently it just checks metadata, because the command line option sets the metadata, and the way it's currently done there's no way to tell whether the option was set by command line or in actual metadata. This can be fixed by adding a new field to Opt.

[lierdakil]

@jgm I don't think that if we remove biblio-files, --bibliography should automatically imply -F pandoc-citeproc anymore, since using it with --biblatex/--natbib would be equally feasible option, and using -V bibliography/-M bibliography is somewhat counterintuitive.

pandoc-citeproc may be a reasonable default, if nothing else is specified, but should not be forced.

[jgm]

It's already the case that --bibliography doesn't imply -F pandoc-citeproc if you specify --biblatex or --natbib on the command line as well.

[lierdakil]

Oh, ok. I missed that.

[jgm]

Closed by f0817e19527dc366339c070ac814e71f6483f6f6 and c6debff1f898b0fd6a36efe8397dbfd18b84cacf

[bscottm]

For LaTeX: bad idea to escape underscores in file names (was doing some independent testing).

\addbibresource{foo_bar.bib} % works \addbibresource{foo_bar.bib} % no data source