Check chunk options

[cbrnr]

Recently, it took me longer than I'd like to admit to find out why the following code chunk gets evaluated despite setting the corresponding option:

---
title: Test
---

```{r}
#| eval: false
cat("Hello")
```

If you want to reproduce, copy this example to a file test.qmd and preview it with quarto preview test.qmd.

In fact, the cell is evaluated because I accidentally used a non-breaking space (U+00A0, ⌥Space on a Mac) instead of a normal space after the #| characters. I now turned on "editor.unicodeHighlight.includeComments": true and "editor.unicodeHighlight.nonBasicASCII": true in Visual Studio Code, which makes this obvious, but I thought that maybe Quarto could issue a warning (or info) when encountering unknown chunk options. Currently, I didn't find anything even after setting --log-level info. WDYT?

[cderv]

Thanks for the report. Let me transform that to an issue to discuss how to improve this, as there is several possibility IMO.

[mcanouil]

This was completed in #2681

[cbrnr]

Great, thanks a lot!