Summary

Reject the Lua %f frontier pattern instead of mistranslating it.

Review Request #15273 — Created Sept. 4, 2026 and submitted Sept. 18, 2026, 10:19 a.m.

Information

Owner

david

Repository

Review Board

Branch

release-9.x

Bugs

Depends On

Reviewers

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reviewboard

People

Description

%f fell into the unnecessarily-escaped-character branch and silently
became a literal "f", changing the meaning of any pattern using it.
Python regexes have no equivalent construct, so the converter now logs
an error and returns None, matching the existing %b handling.

Testing Done


Added %f cases to the conversion error tests.
Ran all reviewboard/treesitter tests.

Commits

Summary	ID
Reject the Lua %f frontier pattern instead of mistranslating it. `%f` fell into the unnecessarily-escaped-character branch and silently became a literal "f", changing the meaning of any pattern using it. Python regexes have no equivalent construct, so the converter now logs an error and returns None, matching the existing `%b` handling. Testing: - Added `%f` cases to the conversion error tests. - Ran all reviewboard/treesitter tests.	lqsqruvvprpxurxzsuppytplynztklsu

Summary

Reject the Lua %f frontier pattern instead of mistranslating it.

`%f` fell into the unnecessarily-escaped-character branch and silently became a literal "f", changing the meaning of any pattern using it. Python regexes have no equivalent construct, so the converter now logs an error and returns None, matching the existing `%b` handling. Testing: - Added `%f` cases to the conversion error tests. - Ran all reviewboard/treesitter tests.

lqsqruvvprpxurxzsuppytplynztklsu

flake8 passed.

JSHint passed.

Ship it!

```
Ship It!
```

Status:: Completed
Change Summary:: Pushed to release-9.x (1528b75)