f119c33789
The grouping logic in `do_delete_messages` calls `message.is_stream_message()` in a loop, which needs to access message.recipient. This is obviously super inefficient if .recipient hasn't been prefetched for the message objects. `delete_in_topic` is the only function that calls `do_delete_messages` with many messages, so this is the only spot we need to fix, to address the immediate bug. Of course a better improvement would be to fix `do_delete_messages` to do something smarter than naively accessing message.recipient in a loop.
Zulip overview
Zulip is an open-source team collaboration tool with unique topic-based threading that combines the best of email and chat to make remote work productive and delightful. Fortune 500 companies, leading open source projects, and thousands of other organizations use Zulip every day. Zulip is the only modern team chat app that is designed for both live and asynchronous conversations.
Zulip is built by a distributed community of developers from all around the world, with 97+ people who have each contributed 100+ commits. With over 1,500 contributors merging over 500 commits a month, Zulip is the largest and fastest growing open source team chat project.
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