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Documentation | 2025.5

# What's New in P4 Code Review 2024.4

Released: September 2024

For a complete list of what’s new and bug fixes in this release, see the release notes.

## Added support for Haxe code for syntax highlighting in the Review page

The syntax highlighting in the Review page now supports Haxe code, see Supported syntax highlighting in the Review page.

## Added ability to check that user has permission to paths added to branches

Added a new configurable `permission_check` for projects in the swarm_root/data/config.php file that enables Helix Swarm to check if a user has permissions to create a branch for a specified path. See Configuration overview.

## When deleting users in Helix Core Server, they are now removed automatically from Helix Swarm's lists of users

When a user is deleted from the Helix Core Server, Helix Swarm automatically removes the deleted user from the user profile, test definitions, workflows, projects, and groups. See How P4 Code Review handles deleted users .

## Improved security of Helix Swarm

The security of the Helix Swarm application has been improved by adding missing security headers, identified through Mozilla Observatory. See Security.

## Added ability to view diff for a file that is moved and edited

If you rename a file, edit it, and request a review, only the edited content is highlighted in the diff panel. See File diff panel.

## Added ability to use Slack integration through a proxy server

You can now use Slack integration through a proxy server. See Use Slack integration through a proxy server.

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