`code-link` and `code-line-numbers` does not work together when both set to true

[JauntyJJS]

Hi,

I was running a simple Quarto document that just takes the mean of c(1,2,3) and wanted to know how code-link and code-line-numbers work.
The versions are Quarto 1.0.11, R 4.2.1 and RStudio 2022.07.1 Build 554.

Hopefully the issue reported can be reproduced.

I understand that both R packages downlit and xml2 need to be installed.

Below is the content of the Quarto document.

---
title: "CodeNumberVSCodeLink"
format:
  html:
    code-link: true
    code-line-numbers: true
---

## Quarto

Quarto enables you to weave together content and executable code into a finished document. To learn more about Quarto see <https://quarto.org>.

```{r}
mean(c(1,2,3))

If I set code-link: true and code-line-numbers: false and click render, the hyperlink works

If I set code-link: false and code-line-numbers: true and click render, the code numbering works

However when I set both code-link: true and code-line-numbers: true and click render, only the the code numbering works.

Is there a reason for this behaviour ?

[cderv]

This is a known issue due to downlit R package which is used by code-link: true feature.
downlit is not compatible yet with Pandoc's numbered line feature. It is tracked in r-lib/downlit#133

We'll fix upstream. Thanks for the report.

[jaredlander]

Took my a while to figure out that code-line-numbers prevented downlit from working. Can the documentation be updated until it's fixed so that others don't have to experiment to find this problem?

[cderv]

This was added to doc in #747

We'll track resolution of this in #3519 and this is related to support in downlit itself

• downlit_html_* should support Pandoc's document with numbered line r-lib/downlit#133