Hi, Wojtek here. Let’s quickly look at a few of this week’s fixes.

Validate URI scheme in Action Text markdown link conversion
Add a Rails::HTML::Sanitizer.allowed_uri? check to markdown_link. When the URI scheme is disallowed, return the escaped title wrapped in escaped brackets (\[title\]) instead of emitting a link.

Example: <action-text-attachment url="data:text/html,PAYLOAD"> previously produced ![Image](data:text/html,PAYLOAD) in markdown output. Now it produces \[Image\].

Restore previous instrumenter after execute_or_skip
Fix by saving and restoring the previous instrumenter value around the EventBuffer’s lifetime. On background threads, this is a no-op (saves nil, restores nil). On the caller thread via caller_runs, it restores the real instrumenter and prevents contamination.

Optimize generated Dockerfile build performance
Reduces number of docker build layers.

Fix parsing SQLite virtual tables without parenthesis
Previously running bin/rails db:migrate with virtual tables crashed the schema dumper, which produced a broken db/schema.rb file.

You can view the whole list of changes here.
We had 14 contributors to the Rails codebase this past week!

Until next time!

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