### Bug description

Hi Quarto-Dev,

I've been kicking the tires on the Confluence publishing feature but I have been unable to push to  Confluence due to an `Invalid Confluence parent URL` issue. Is there a regex matcher for Confluence URLs? If so, I'd be happy to try a few pages. 

```bash
quarto publish confluence
? Publish with account: › <elided>
? Space or Parent Page URL: ›  <elided>
ERROR: Invalid Confluence parent URL:  <elided>
```

In the above example, I am attempting to use as a parent is a simple page under my Personal Space.  I tried with and without spaces and also using the `share link` link version of the page. In all cases the URL fails. Notable, this is a private Atlassian instance so perhaps that is part of the issue?

Thanks,
zach cp

### Checklist

- [ ] 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.
- [ ] 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.
- [ ] Please document the RStudio IDE version you're running (if applicable), by providing the value displayed in the "About RStudio" main menu dialog?
- [ ] Please document the operating system you're running. If on Linux, please provide the specific distribution.
allenmanning
2022-12-20T15:21:14Z
zachcp
bug
v1.3
closed
ERROR: Invalid Confluence parent URL
https://github.com/quarto-dev/quarto-cli/issues/3720