Pasted code blocks and inline code should preserve all text characters

[dbolton]

Describe the bug
Nextcloud Text mangles pasted code blocks and inline code. It should preserve the original text instead of dropping characters or trying to parse it.

To Reproduce
Steps to reproduce the behavior:

1. Select and copy the following text:

Code block:

2x = 2*x, 3(4) = 3*(4)
**Bold**
_Underline_
~~Strike through~~
`code`
https://example.com

Inline code: 2x = 2*x, 3(4) = 3*(4) **Bold** _Underline_ ~~Strike through~~ `code` https://example.com

2. Open a markdown file in Nextcloud
3. Paste

Actual behavior
Asterisks (*), underscores (_), tildes (~), and grave accents (`) are mistakenly dropped or parsed. URLs become clickable.

Expected behavior
The text within the code blocks should not be parsed at all. It should match the text display above. URLs should remain plain text.

Client details:

• OS: Windows
• Browser: Firefox (developer edition)
• Version: 79
• Device: Desktop

Server details

Text app version: 2.0.0

Operating system: Ubuntu

Web server: Nginx

Database: mysql

PHP version: 7.2.31

Nextcloud version: 18.0.7

[luka-nextcloud]

I cannot reproduce the bug. Please feel free to reopen the issue if you are still able to see the bug on the latest version.