Punctuation-preceded backticks don't visually format when typed

[strugee]

Describe the bug

Backticks aren't turned into code formatting when preceded by a punctuation character. For example typing this:

(`foobar`

does not result in code formatting being applied.

To Reproduce
Steps to reproduce the behavior:

1. Open a Text document and start editing it.
2. Type ( and then backtick.
3. Type anything (say foobar) then backtick.
4. Notice how nothing happens, and you still see literal backticks in your document. (The same is true if you click "Done" and then go back to editing.)

Expected behavior
foobar is formatted as code.

Screenshots

Server details:

• Nextcloud version: 28.0.2
• PHP Version: 8.1.27
• Database: 5.7.44-48-log (I know it's unsupported but it's out of my control this seems unrelated)

Client details:

• OS: Linux
• Browser: Firefox
• Browser version: 122
• Device: desktop

Nextcloud log (data/nextcloud.log)

N/A

Browser log

Nothing at all in the JS console.

[mejo-]

This should be fixed upstream in tiptap. Probably easy to fix here by adding ( to the lookbehind assertion at the beginning of the regex:

https://github.com/ueberdosis/tiptap/blob/48935a2f26e3da2fa13c265773dfe259893829cc/packages/extension-code/src/code.ts#L31-L32