AW: How to add a `\usepackage` in a Lua filter meant to support LaTeX?

[<denis.maier-FfwAq0itz3ofv37vnLkPlQ@public.gmane.org>]

I don't know how that would work with a filter, but wouldn't a custom template be an easier solution? Or what speaks against this?

Best,
Denis


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Von: pandoc-discuss-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org <pandoc-discuss-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org> im Auftrag von Norman Ramsey <fellswalker-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Gesendet: Donnerstag, 19. November 2020 20:27:18
An: pandoc-discuss
Betreff: How to add a `\usepackage` in a Lua filter meant to support LaTeX?

I've got a Lua filter that is meant to render certain document elements in a `boxedminipage` environment.  To accomplish this feat, I give the element in a suitable `div`, and a Lua filter inserts the LaTeX environment.  The document itself remains universal, but the Lua filter is resolutely intended for LaTeX.

The filter adds a raw `\usepackage{boxedminipage2e}` to the `header-includes` of the metadata, but unfortunately when `-V header-includes=...` appears on the command line, it takes precedence and the document metadata is ignored.

I thought of trying to use `-M header-includes=...` instead of `-V header-includes=...`, but that comes with its own problems: using the `-M` option, the argument on the command line is escaped.  It is not clear to me if there is a mechanism I can use to put raw LaTeX in that spot.

The issue of the command line overriding metadata has been discussed at some length on the issue tracker (https://github.com/jgm/pandoc/issues/3139) and in pandoc-discuss, where a related issue is laid out in the last post (https://groups.google.com/g/pandoc-discuss/c/N6WhlmSPXbY/m/UYJJBdZwAAAJ).
The discussion thread in pandoc-discuss is now two and a half years old, and it seemed to be in favor of a change. But as of pandoc version 2.11.1.1, no change appears to have been made, and issue #3139 remains open.

Is there a workaround I can add to my Lua filter that will make it work in a self-contained way even in the presence of assignments to the `header-includes` variable on the command line?  And is there any thought of #3139 being resolved one way or the other?

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