Is there a way to manually highlight parts of a plaintext code block with Hugo?
What I’d like is something similar to the escape lexer in Jekyll/rougify, where I can do:
```escape
https://app.target.com/users?id=<!123456!>
```
It will be rendered like a plaintext code block, except 123456 (the text between <! and !>) will be highlighted in red:
We use Chroma to perform syntax highlighting. I suggest you create a proposal to add a new lexer, referencing:
https://github.com/rouge-ruby/rouge/blob/master/lib/rouge/lexers/escape.rb
Thanks for your suggestion. In the meantime, I’ve created a custom shortcode in layouts/shortcodes/hl.html:
<span class="{{ index .Params 0 | default "k" }}">{{ .Inner }}</span>
which I can use as follows:
```plaintext
Some text with a {{<hl>}}Keyword{{</hl>}} and a {{<hl s>}}LiteralString{{</hl>}}.
```