### Bug description

- I am trying to publish a Quatro document to my personal space in Confluence. 
- When I provide the parent URL for my personal space, it returns "ERROR: Invalid Confluence parent URL:" My personal space key is "~brian.smith". 
- I tried removing the "." and using a parent url with the space "~briansmith" and the command gets to "[✓] Verifying...", but fails because of course that space doesn't actually exist. 
- macOS 13.2.1 (22D68)
- RStudio IDE: Version 2023.03.0+386

The .qmd is just:
```
---
title: "Confluence Document Test"
author: "Brian Smith"
format: html-confluence
---
## Overview
My text will go here. 
---
```
quarto check:

[✓] Checking versions of quarto binary dependencies...
      Pandoc version 3.1.2: OK
      Dart Sass version 1.55.0: OK
[✓] Checking versions of quarto dependencies......OK
[✓] Checking Quarto installation......OK
      Version: 1.4.25
      Path: /Applications/quarto/bin

[✓] Checking basic markdown render....OK

[✓] Checking Python 3 installation....OK
      Version: 3.9.6
      Path: /Library/Developer/CommandLineTools/usr/bin/python3
      Jupyter: (None)

      Jupyter is not available in this Python installation.
      Install with python3 -m pip install jupyter

[✓] Checking R installation...........OK
      Version: 4.1.0
      Path: /Library/Frameworks/R.framework/Resources
      LibPaths:
        - /Library/Frameworks/R.framework/Versions/4.1/Resources/library
      knitr: 1.42
      rmarkdown: 2.21

[✓] Checking Knitr engine render......OK

### 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.
- [X] Please provide the output of `quarto check` so we know which version of quarto and its dependencies you're running.
allenmanning
2023-05-03T19:34:13Z
smithbn
bug publishing-confluence
v1.4
closed
Confluence Spaces with "." returns ERROR: Invalid Confluence parent URL:
https://github.com/quarto-dev/quarto-cli/issues/5405