Earmark - Parsing HTML inside code blocks

Questions & Help Questions
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1

Using Earmark, I’m trying to parse HTML inside markdown code blocks so that they can be syntax-highlighted. I’m having a bit of a rough time with it and, admittedly, I could probably stand to spend a bit more time trying to figure it out myself but I feel I’m maybe on the wrong path as it stands so I thought it couldn’t hurt to ask—also, whenever I do ask for help, I usually figure it out minutes later :sweat_smile:

So, I think understand that the following doesn’t work—the 3rd (content) element of the 4-tuple is usually ignored:

def parse() do
  """
  ```sql
  <span class="k">SELECT</span> * <span class="k">FROM</span> table
  ```
  """
  |> Earmark.as_ast!()
  |> Earmark.map_ast(&parse_html/1)
  |> Earmark.transform()
end

defp parse_html({"code", [{"class", "sql"}], [html], meta} = node, true) do
  {:ok, html} = Floki.parse_fragment(html)

  {:replace, {"code", [{"class", "sql"}], [html], meta}}
end

I say usually since the documentation doesn’t explicitly mention that the content node is ignored when using {:replace, node} yet that seems to be the case (I’m actually not sure .

I there a way to simply replace the content node?

Is there just a better way of doing this (without using highlightjs)?

I’m looking at pre- and post-processors but currently not having much luck.

Thanks for reading!