Outline view: Support nested sections in R scripts

[abduazizR]

So in Rstudio, I can type ctrl+shift+R to put sections in my R script so I can track my work. Is this feature available for Positron? For R and Python?

[jmcphers]

Yes it is! Enable the RStudio keymap:

Then you'll get an "Insert Section" command binding to Ctrl + Shift + R:

It works just like RStudio's command of the same name.

There's no direct equivalent in Python, but there's something very similar for grouping code into sections; if you start a comment with #%% then Positron will recognize it as a "cell" (the same is available for R with the #+ comment).

[abduazizR]

Thanks for the response. For R, I can't see the outlines of the sections in the editor so I can navigate between them.

[jmcphers]

You're right, things like functions show up but sections don't.

That's something we should fix. I'm going to update the title of the issue. Thanks for reporting!

[rjake]

Just to highlight this request a bit further, my outlines in RStudio made heavy use of emoji and that made it very easy to navigate. I'm missing it quite a bit in Positron

```{r read-pins}
# raw data ----
## ☁ board ----
board <- board_connect()

## 📌 all_deps ----
all_deps <- pin_read(board, "my-table")
```

And for anyone curious, this is my legend

🔳 = card            👀 = observe
⏺ = constant        👉 = output
⚙  = function        💫 = reactive, starts 'r_'
💲  = input widget    

[renatovargas]

Not an issue, but a shameless request related to this. For Quarto documents (.qmd), RStudio shows only headings and subheadings in the outline, like you can see below on the left. Positron, on the other hand, shows headings, subheadings and (code cell) like you can see on the right. Now this looks great for defined code chunk listings that are named for cross refs, but very crowded for the rest of unnamed code chunks.

I am aware that you can click on "collapse all" like below, but that will collapse to first level headings only and you lose some ability to quickly navigate the document, especially in this case, where you go back and forth, perhaps trying out different elasticities in a very specific subsection to see poverty results at the end or going back to see how you set something up. I am aware also that you can individually open up each heading.

Now, I'm not saying to get rid of "(code cell)", because it encourages you to name your chunks, but I would appreciate it if there was perhaps a "toggle code cells" option, independent from collapse/expand for the Outline panel, so that you could limit it to headings and subheadings in Rmd, qmd's and other document type files. Thank you.

[juliasilge]

@renatovargas That would be a request for the Quarto VS Code extension, maybe added to this issue. Positron doesn't control what is provided there, but rather than Quarto VS Code extension.

[renatovargas]

@renatovargas That would be a request for the Quarto VS Code extension, maybe added to this issue. Positron doesn't control what is provided there, but rather than Quarto VS Code extension.

Got it, I'll move it there, thank you.