Markdown: Language-identifying attribute for code blocks?

Feature requests
1

I’m struggling to find precedents besides RedCarpet’s usage in Jekyll, but several tools I’ve used have produced an attribute that identifies the language of the code block being rendered (i.e., data-lang="<LANGUAGE>", class="language-<LANGUAGE>"). This can offer some neat styling tweaks with CSS! Here’s an example of how that might look:

From this:

```rust
fn main() {
    println!("Hello, world!");
}
```

…to this:

<pre>
  <code data-lang="rust"> <!-- >
fn main() {
    println!("Hello, world!");
}
  </code>
</pre>
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2

Is it only for the cases where syntax highlighting is disabled?

In Syntect, you don’t actually have a <code> tag, only <pre>.
The way to implement it would be to do a basic replace on the result of https://github.com/getzola/zola/blob/master/components/rendering/src/markdown.rs#L189 (which is returning https://github.com/trishume/syntect/blob/master/src/html.rs#L308-L314)

If it is only for codeblocks without syntax highlighting, then it’s even easier, just a string to modify.

3

I’d prefer to have it be available in all cases – I specifically was hoping for language-specific decorations around rendered code blocks – but I understand that I’m not necessarily representative of others’ use cases. :slight_smile:

4

I just created a branch with that feature:

Unless there are huge objections I would open a PR for it.

5

PR created: https://github.com/getzola/zola/pull/1204

1 Like