Hi @MikeRalphson. I was wondering whether this PR would be suitable for including in shins. It provides an implementation/fix for #30.

The approach the PR takes is based on the following couple of comments:

• Custom highlight function cannot access the attributes of the fence token markdown-it/markdown-it#457 (comment)
• Attributes for code fences arve0/markdown-it-attrs#59 (comment)

The code I've implemented in the fence method of the PR is based on markdown-it's fence method in https://github.com/markdown-it/markdown-it/blob/master/lib/renderer.js#L39.

Let me know if there's any info I can add. Thanks

Looks good. I just need to find the time to test it doesn't affect the existing output. Thanks for your patience.

No worries. Thanks @MikeRalphson

When comparing the before and after output, I see each of the code blocks differs as per this example:

-<pre class="highlight tab tab-shell"><code><span class="hljs-comment"># You can also use wget</span>
+<pre><code class="highlight tab tab-shell"><span class="hljs-comment"># You can also use wget</span>

Could the class attributes be moved back to the <pre> element, as some people may be depending on that?

I've tried this update, but it doesn't seem to add the style. The linked markdown issue suggests that adding the attributes should be in the form:

    ```http {.some-class}
    GET /foo/bar HTTP/1.1
    ...
    ```

But that doesn't seem to do anything in the generated code block. I would expect that class="some-class" would be added to the pre or code element.

Please re-raise over on slant if still an issue.