Re: Support for HTML's '<samp>' tag?

[BPJ <melroch-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>]

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The reason no doubt is that Pandoc has nothing in its document model which
corresponds to `<samp>`.

If you use the `+raw_html` extension (`--from=html+raw_html`) you can use a
simple Lua filter to convert the raw HTML tags to the appropriate raw
Texinfo:

````lua
local samp_for = {
  ['<samp>'] = pandoc.RawInline('texinfo', '@samp{'),
  ['</samp>'] = pandoc.RawInline('texinfo', '}')
}

function RawInline (elem)
  if 'html' ~= elem.format then
    return nil
  elseif samp_for[elem.text] then
    return samp_for[elem.text]
  else
    return nil
  end
end
````

I have often wished for an option or extension which will cause "unknown"
HTML elements or LaTeX commands/environments to be converted into a span or
div with a `tag` or `command`/`environment` attribute so that e.g.
`<samp>foo</samp>` becomes what in Markdown would become `[foo]{tag=samp}`,
`\foo[bar]{baz}` would becomes what in Markdown would become
`[[bar]{command="foo" arg="1"}[baz]{command="foo" arg="2"}]{command="foo"}`
and `\begin{foo}[bar]{baz}text\end{foo}` becomes

````Markdown
::: {environment="foo"  arg1="bar" arg2="baz"}
text
:::
````

since this would in most cases make it much easier to use filters to make
something sensible of "unknown" tags/commands/environments.

At one point I wrote a filter in Perl which implemented this for LaTeX,
including both preserving LaTeX arguments "raw" as attributes and calling
out to pandoc to parse the content of arguments and environments.  It was
much harder with HTML since I had to loop through the contents of any
elements which might contain raw HTML and "capture" raw opening tags and
what follows them up to the closing tag if any, including keeping track of
nested tags.
I suppose such a filter might be written in Lua too, but parsing LaTeX
arguments and raw HTML attributes would be considerably more hairy due to
the limitations of Lua patterns compared to Perl regexes.

Den sön 6 okt. 2019 09:47Werner LEMBERG <wl-mXXj517/zsQ@public.gmane.org> skrev:

>
> [pandoc 2.6]
>
>
> I convert from HTML to texinfo, and I noticed that
>
>   <samp>foo</samp>
>
> gets translated to
>
>   foo
>
> instead of the expected
>
>   @samp{foo}   .
>
> Doing
>
>   git grep -i 'samp[^l]'
>
> in pandoc's repository I don't see support for the '<samp>' HTML tag
> at all.  Am I missing something?  Is this intentional?
>
>
>     Werner
>

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