Re: Can math elements have attributes

[Bastien DUMONT <bastien.dumont-VwIFZPTo/vqsTnJN9+BGXg@public.gmane.org>]

For spans, it would rather be:

[$$x = 1+2$$]{ .cs #math:equation caption=test}

[$x = 1+2$]{ .cs #math:equation caption=test}

(Backticks are for code elements.)

Le Wednesday 22 February 2023 à 08:33:36AM, Julien Dutant a écrit :
> I'd check out if there's an extension flag (https://pandoc.org/MANUAL.html#
> extensions) you can add to commonmark_x input for it to process multiline
> attributes. Or one that can be added to markdown to process math attributes.
> 
> As the Pandoc AST doesn't have attributes on Math elements (https://pandoc.org/
> lua-filters.html#type-math) the common mark reader turns them into attributes
> of a container Span element, as your output shows. So an alternative would be
> to simply write the span in Pandoc's markdown by simply adding a backtick
> before and after:
> 
> `$$x = 1+2$$`{ .cs #math:equation caption=test}
> 
> `$x = 1+2$ `{ .cs #math:equation caption=test}
> 
> ~~~{
>   .cs
>   #lst:my-listing
>   caption=test }
> def f(x):
>    return x
> ~~~
> 
> Writing a Lua filter that picks up either is also an option. Picking up
> attributes list after equations is probably a bit complicated. But using
> pattern matching to process the initial {...} in a code block is more feasible.
> 
> All the best,
> 
> On Wednesday, February 22, 2023 at 8:15:53 AM UTC A A wrote:
> 
>     Anyone? I also opened an issue in Github but no response.
> 
>     On Fri, 17 Feb 2023 at 12:01, A A <amine.ab...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:
> 
>         Dear all,
> 
> 
>         Having not received a response to my query below, I ran a few of my own
>         tests to try to understand what is going on.
> 
>         It seems that commonmark_x does recognize attributes for both inline
>         and display math. If I have the following in my markdown file:
> 
>         $$x = 1+2$${ .cs #math:equation caption=test}
> 
>         $x = 1+2${ .cs #math:equation caption=test}
> 
>         ~~~{
>           .cs
>           #lst:my-listing
>           caption=test
>           }
>         def f(x):
>             return x
>         ~~~
> 
>         And I run pandoc --from commonmark_x --to native test.md I will get the
>         following:
> 
>         [ Para
>             [ Span
>                 ( "math:equation" , [ "cs" ] , [ ( "caption" , "test" ) ] )
>                 [ Math DisplayMath "x = 1+2" ]
>             ]
>         , Para
>             [ Span
>                 ( "math:equation" , [ "cs" ] , [ ( "caption" , "test" ) ] )
>                 [ Math InlineMath "x = 1+2" ]
>             ]
>         , CodeBlock
>             ( "" , [ "{" ] , [] )
>             "  .cs \n  #lst:my-listing \n  caption=test\n  }\ndef f(x):\n    return x"
>         ]
> 
>         Notice that the multiline attributes for the CodeBlock element are not
>         picked up. If I instead try pandoc --from markdown --to native test.md:
> 
>         [ Para
>             [ Math DisplayMath "x = 1+2"
>             , Str "{"
>             , Space
>             , Str ".cs"
>             , Space
>             , Str "#math:equation"
>             , Space
>             , Str "caption=test}"
>             ]
>         , Para
>             [ Math InlineMath "x = 1+2"
>             , Str "{"
>             , Space
>             , Str ".cs"
>             , Space
>             , Str "#math:equation"
>             , Space
>             , Str "caption=test}"
>             ]
>         , CodeBlock
>             ( "lst:my-listing" , [ "cs" ] , [ ( "caption" , "test" ) ] )
>             "def f(x):\n    return x"
>         ]
> 
> 
>         The attributes in the CodeBlock element are picked up, but the
>         attributes for display and inline math are not.
> 
>         Unfortunately, for my use case I would like to be able to assign
>         multiline attributes to code block elements and assign attributes to
>         display and inline math elements.
> 
>         Is there a way to achieve both in the same markdown file? Thanks for
>         your consideration.
> 
>         Regards,
> 
>         Amine
> 
> 
>         ---------- Forwarded message ---------
>         From: A A <amine.ab...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
>         Date: Wed, 8 Feb 2023 at 13:52
>         Subject: Can math elements have attributes
>         To: <pandoc-...-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org>
> 
> 
>         Dear all,
> 
>         I am writing my own pandoc to latex converter using panflute and would
>         like to attach attributes to Math elements. I have tried the following
>         syntax, but it seems that the attribute is not being picked up by
>         panflute:
> 
>         ```
>         $$x=y$${ a=b }
>         ```
> 
>         I did some of my own research to figure out what I was doing wrong. And
>         a couple of things became apparent:
> 
>         - On the one hand, it looks like pandoc might not support this:
>             - [1]https://github.com/jgm/pandoc/issues/684
>             - [2]https://github.com/jgm/pandoc/issues/5286
>         - On the other hand, `pandoc-crossref` seems to be able to handle this
>         syntax:
>             - [3]https://github.com/lierdakil/pandoc-crossref
>             - [4]https://lierdakil.github.io/pandoc-crossref/#equation-labels
> 
>         Is this currently supported by pandoc? If not then how is
>         `pandoc-crossref` able to handle it? Thanks for your consideration.
> 
>         Regards,
> 
>         Amine
> 
> 
> 
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> References:
> 
> [1] https://github.com/jgm/pandoc/issues/684
> [2] https://github.com/jgm/pandoc/issues/5286
> [3] https://github.com/lierdakil/pandoc-crossref
> [4] https://lierdakil.github.io/pandoc-crossref/#equation-labels
> [5] mailto:pandoc-discuss+unsubscribe-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org
> [6] https://groups.google.com/d/msgid/pandoc-discuss/0845b275-aa43-4fc3-86a5-17b20de652een%40googlegroups.com?utm_medium=email&utm_source=footer

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