From: John MacFarlane <jgm-TVLZxgkOlNX2fBVCVOL8/A@public.gmane.org>
To: pompez <martinsifrar11-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>,
pandoc-discuss
<pandoc-discuss-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org>
Subject: Re: Is there a way to change the way Pandoc parses HTML inside of markdown documents?
Date: Mon, 16 Aug 2021 15:08:54 -0700 [thread overview]
Message-ID: <yh480k1r6tt53d.fsf@johnmacfarlane.net> (raw)
In-Reply-To: <aae29ca7-60ca-4349-af03-939f0ac503efn-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org>
I'm afraid you'll have to write some parsing code...
pompez <martinsifrar11-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> writes:
> I'm starting out with Lua filters and apologize for this possibly already
> answered question. You can also read this question on StackOverflow
> <https://stackoverflow.com/questions/68809527/is-there-a-way-to-change-the-way-pandoc-parses-html-inside-of-markdown-documents>
> .
>
> I'm using Pandoc to convert markdown to HTML. My markdown files also
> contain some raw HTML. In the examples, I'll be using `<mark>` and `<u>`.
>
> Let's say I want to change every `<mark>` to a `<u>` tag. We parse the
> input as HTML and look at the AST.
>
> ```
> $ echo '<u>foo</u> & <mark>bar</mark>' | pandoc --from=html --to native
> [Plain [Underline [Str "foo"],Space,Str "&",Space,Span ("", ["mark"],[])
> [Str "bar"]]]
> ```
>
> On this structure, we can use a simple filter which replaces `Span`
> elements representing the `<mark>` tag and replaces with `Underline`
> elements.
>
> ```
> function Span(elem)
> if elem.classes[1]:gmatch('mark') then
> return pandoc.Underline(elem.content)
> end
> end
> ```
>
> ```
> [Plain [Underline [Str "foo"],Space,Str "&",Space,Underline [Str "bar"]]]
> ```
>
> This is good. But if we parse the same input as markdown, we get a much
> less convenient structure.
>
> ```
> $ echo '<u>foo</u> & <mark>bar</mark>' | pandoc --from=markdown+raw_html
> --to native
> [Para [RawInline (Format "html") "<u>",Str "foo",RawInline (Format "html")
> "</u>",Space,Str "&",Space,RawInline (Format "html") "<mark>",Str
> "bar",RawInline (Format "html") "</mark>"]]
> ```
>
> And if we had some additional criteria by which to replace `<mark>` with
> `<u>` (the content for example), we would have to identify the opening and
> closing `RawInline` elements.
>
> I'm wondering if there is any good solutions to this problem? Is there a
> way to parse HTML in markdown just as HTML would be parsed otherwise? Or is
> there way to solve this in a Lua filter without writing some parsing code?
>
> --
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> To view this discussion on the web visit https://groups.google.com/d/msgid/pandoc-discuss/aae29ca7-60ca-4349-af03-939f0ac503efn%40googlegroups.com.
next prev parent reply other threads:[~2021-08-16 22:08 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-08-16 21:43 pompez
[not found] ` <aae29ca7-60ca-4349-af03-939f0ac503efn-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org>
2021-08-16 22:08 ` John MacFarlane [this message]
[not found] ` <yh480k1r6tt53d.fsf-pgq/RBwaQ+zq8tPRBa0AtqxOck334EZe@public.gmane.org>
2021-08-16 22:55 ` pompez
2021-08-17 10:37 ` William Lupton
[not found] ` <CAEe_xxj-kp22oToH4o5J54s16W4WzMkiaEicOy+TuqDZf5LP3g-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2021-08-17 11:24 ` Bastien DUMONT
2021-08-24 8:44 ` pompez
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