[AndyScherzinger]

Part 6 of the conditional questions stack from #3123 (by Micke Nordin, with fixes by TimedIn and the review fixes). Based on #3837; the "Files changed" tab shows only this part.

Stack

1. Conditional questions: base with radio and dropdown questions #3833 Conditional questions: base with radio and dropdown questions
2. Conditional questions: branches on checkboxes #3834 Conditional questions: branches on checkboxes
3. Conditional questions: branches on date and time #3835 Conditional questions: branches on date and time
4. Conditional questions: branches on file upload #3836 Conditional questions: branches on file upload
5. Conditional questions: branches on linear scale and color #3837 Conditional questions: branches on linear scale and color
6. Conditional questions: branches on short and long text #3838 Conditional questions: branches on short and long text ← this PR

This PR

A text question shows a branch when the answer equals (short text only) or contains a text, or matches a regular expression.

• regular expressions use the same /pattern/modifiers format as validationRegex, are checked when saving, and an invalid one is not saved by the editor;
• matching is limited in subject length and backtracking, on the server and in the browser;
• docs and tests.

Tests

• Unit tests: 652, all passing except the 15 IUserFolder errors main has as well.
• php-cs-fixer, psalm, eslint, vue-tsc (no new errors) and the build are clean.

🤖 AI (if applicable)

• The content of this PR was partly or fully generated using AI

[codecov]

Codecov Report

❌ Patch coverage is 64.51613% with 11 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
lib/Service/SubmissionService.php	62.06%	11 Missing ⚠️

📢 Thoughts on this report? Let us know!

[AndyScherzinger]

Closing this one: follow-up questions triggered by short and long text answers (equals, contains, regex) are dropped from the stack, see #3833 (comment) for the reasons. Text questions still work as follow-up questions.

Text conditions are planned to come back later for "show only if" rules on later questions, where they fit better than inline. The branch feat/conditional-questions-6-text stays for reference.