Greater customization for references

[Simre1]

Hello!

I want to customize the references for line numbers, however, it is somewhat limited.

Problem

#figure(```
  line1
  line2
  ```)
<example>

@example:1

@example:1 renders as:
Listing 1-1

Instead, I want it to render as:
Line 1

I can modify the rendering of references with reference-sep and reference-number-format. However, it is not possible to modify the first part, I cannot remove "Listing 1".

Possible Solution

I am not really familiar with typst functions. I hope everything is still clear.

In order to make the whole rendering of the reference modifiable, one could add a setting reference-line-format (and similarly for item). This setting would be a function for rendering the reference and subsumes both reference-sep and reference-number-format.

It would look like this:

reference-line-format: (listing, line)  => ...content

The default behavior would be:

reference-line-format: (listing, line)  => [#listing-#line]
// or similar to the following if you need backwards compatability
reference-line-format: (listing, line)  => [#listing #reference-sep #reference-number-format(line)]

My customized behavior could then be configured like so:

reference-line-format: (listing, line)  => [Line #line]

Thanks for taking a look at this!

[Dherse]

This is implemented in #141 with the ability to use elembic custom show rules for three types of references (line-ref, highlight-ref, and annotation-ref)