Hi all,
(Apologies in advance if the online editor mangles this post, as I'm writing lots html pre tags)
I use pandoc to generate reveal.js presentations. All works well if I let pandoc do its thing.
However, was looking through the reveal.js v4 docs, and there is a really useful hack to highlight successive lines of a code block. See https://revealjs.com/code/#step-by-step-highlights.
To use it, the reveal.js docs say to add "data-line-numbers" inside of the <code> tag. For example:
```
<pre><code data-line-numbers="3-5|8-10|13-15">
...
```
That is difficult in pandoc at the moment, as access to the <code> block attributes is prevented (see also pandoc issue [#3858](https://github.com/jgm/pandoc/issues/3858))
Using this:
```{.bash data-line-numbers="1,2,3,4|4|2|3"}
osmium extract \
-p port-au-prince-poly.osm \
-o port-au-prince-latest.osm \
haiti-and-domrep-latest.osm.pbf
```
produces:
<pre class="bash" data-line-numbers="1,2,3,4|4|2|3" ><code ...
I want the data-line-numbers and in fact the class=bash (or class=language-bash" ) to be on the code block.
The issue I referenced above (#3858) was opened in August 2017 so I'm not hopeful for any movement from pandoc. But, it would be useful if there was yet another command line switch to force all code markup to occur on the <code> block, OR the <pre> block, OR both. Esp. given that the HTML recommendation still suggests putting language-*** class inside the <code> block.
Any other ways around this? My current solution is just to straight up use <pre><code foo=bar etc=etc> tags inside my markdown, which I hate doing as it means I'm only targeting reveal.js.
Thanks,
James Marca
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