v3.4.0

Textualize/textualv3.4.0Jun 14, 2025by willmcgugan

AI Summary

Enhanced Content markup parsing to be more lenient with Python list literals and fixed various rendering and threading issues.

Key Highlights

Content markup parser is now more lenient with square brackets
Fixed initial flicker in TextArea rendering
Added experimental opt-in support for textual-speedups

New Features

Added experimental opt-in support for textual-speedups

Full Release Notes

Mostly fixes, although there is a notable change to markup.

Previously anything in square brackets was considered a tag, which resulted in markup errors with Python list literals. i.e. `[1,2,3]` would be interpreted as a tag. The Content markup parser has been made more lenient in these cases, and treats them as literal text.

## [3.4.0] - 2025-06-14

### Fixed

- Fixed issues with initial flicker in `TextArea` rendering https://github.com/Textualize/textual/issues/5841vcomm
- Fixed issue with workers that have large parameter lists breaking dev tools https://github.com/Textualize/textual/pull/5850
- Fixed post_message failing on 3.8 https://github.com/Textualize/textual/pull/5848
- Fixed log not working from threads https://github.com/Textualize/textual/pull/5863

### Added

- Added experimental opt-in support for https://github.com/willmcgugan/textual-speedups

### Changed

- Content markup is now more lenient; if a 'tag' doesn't contain a valid style it will be included verbatim. https://github.com/Textualize/textual/pull/5851