Docx does not render footnotes from abstract when passing from metadata-file

[fatpat]

Explain the problem.
When exporting from markdown to docx, I want to use a custom abstract with footnotes inside.
Depending how the abstract metadata is passed, footnotes are rendered correctly or not.

here is the content of my file bug.md

# title

content

here is the content of my metadata bug.metadata.yml:

---
title: This a real nice title
author: someone
abstract: |
    this **is** the footnote[^1] in the abstract.
    
    [^1]: this is a footnote content
---

Now, depending on how I call pandoc, the generated docx is not the same:

• pandoc bug.md --metadata-file=bug.metadata.yml -o bug.docx: the footnote is not rendered and the astract contains this is the footnote[^1] in the abstract.
• cat bug.metadata.yml bug.md | pandoc -f markdown -o bug.docx: in this case the footnote is rendered correctly and everything is rendered as expected.

I am in a more complex scenario with multiple metadata files and I was expecting metadata-file to work with footnotes in the abstract.

For testing, I also try to set up the abstract from the command line with --metadata:

• pandoc bug.md --metadata="abstract:this **is** the footnote[^1] in the abstract.\n\n[^1]: this is the footnote content" -o bug.docx: abstract is not even markdown interpreted and it is rendered as-is in the docx output.

Pandoc version?

$ pandoc --version
pandoc 2.14.0.3
Compiled with pandoc-types 1.22.1, texmath 0.12.3.2, skylighting 0.10.5.2,
citeproc 0.4.0.1, ipynb 0.1.0.2
User data directory: /home/xxxx/.local/share/pandoc
Copyright (C) 2006-2021 John MacFarlane. Web:  https://pandoc.org
This is free software; see the source for copying conditions. There is no
warranty, not even for merchantability or fitness for a particular purpose.

[jgm]

--metadata is not markdown interpreted, so that's expected. But --metadata-file should work, at least based on what the manual says: "This option can be used with every input format, but string scalars in the YAML file will always be parsed as Markdown." This looks like a regression (still present in HEAD), but we need to do some bisecting to figure out where it got introduced.

[jgm]

Well, I guess it is being parsed as Markdown (at least the strong emphasis is). The problem is specific to footnotes.

[jgm]

Interestingly, inline notes seem to work okay.

[jgm]

I think we need to change line 83 of src/Text/Pandoc/Readers/Markdown.hs.
(We need to do the plumbing done in parseMarkdown, not just parseBlocks.)

[fatpat]

Thank you very much !!