### Bug description

Using unicode letters and rendering to pdf results in the letters bein omitted (on manjaro linux, vscode). Setting
```yaml
mainfont: Times New Roman
```
lets me render unicode in the main text flow, but not in code blocks. Also this option results in an error when run on my system because the font is not installed. This is not the best UX. This should just work without user interaction.
See this example:


````
---
title: "test"
jupyter: julia-1.8
---

```{julia}
α=3
```

α is a great constant.
````



------------------------------------------------------------------------------
The output is
![image](https://user-images.githubusercontent.com/56505957/197622722-1b744bd7-3769-4e33-a8da-4b44722a5e7a.png)


### Checklist

- [X] Please include a minimal, fully reproducible example in a single .qmd file? Please provide the whole file rather than the snippet you believe is causing the issue.
- [X] Please [format your issue](https://quarto.org/bug-reports.html#formatting-make-githubs-markdown-work-for-us) so it is easier for us to read the bug report.
- [X] Please document the RStudio IDE version you're running (if applicable), by providing the value displayed in the "About RStudio" main menu dialog?
- [X] Please document the operating system you're running. If on Linux, please provide the specific distribution.
cwickham
2022-10-24T20:30:27Z
peteole
documentation
v1.4
open
Greek unicode letters not rendered in pdf output
https://github.com/quarto-dev/quarto-cli/issues/3013