User-assigned IDs in code snippets should be honored by the line highlighter

[hellt]

I am in love with the way one can link to certain line numbers from the markdown:

Here we [handle the `version`](#__codelineno-8-2:9) CLI flag.

The problem I am having is that codelineno-8-2:9 is not a persisten id of the code block element.

If we add a code block before the one in question, its ID will auto-increment and the link won't work anymore.

Since pymarkdownx snippet extension allows to assign user-defined ID it is possible to have a static reference to the code block, that is agnostic to the document layout.

``` {.python #myid linenums="1"}
import bar
```

The problem is that #myid id assigned to the code block is not "respected" by the mkdocs-material, so that when one uses #__codelineno-myid-7 the relevant line does not get highlighted, although the span elements have that ID.

It would be great to have this feature.

[facelessuser]

Then a request for material to support this would be needed. They are the ones doing the highlighting.

[facelessuser]

Sorry, I thought I was responding on my own repo 🙃.

[facelessuser]

For context, the original conversation was occurring here: facelessuser/pymdown-extensions#2258 (reply in thread)

[squidfunk]

Might be a bug. Please create an issue with a minimal reproduction.

[hellt]

opened #6448