2882604451
## Summary Fixes #10866. Introduces the `show_err_msg!` macro which will send a message to be shown as a popup to the client via the `window/showMessage` LSP method. ## Test Plan Insert various `show_err_msg!` calls in common code paths (for example, at the beginning of `event_loop`) and confirm that these messages appear in your editor. To test that panicking works correctly, add this to the top of the `fn run` definition in `crates/ruff_server/src/server/api/requests/execute_command.rs`: ```rust panic!("This should appear"); ``` Then, try running a command like `Ruff: Format document` from the command palette (`Ctrl/Cmd+Shift+P`). You should see the following messages appear: 
The Ruff Language Server
Welcome! ruff server is a language server that powers editor integrations with Ruff. The job of the language server is to
listen for requests from the client, (in this case, the code editor of your choice) and call into Ruff's linter and formatter
crates to create real-time diagnostics or formatted code, which is then sent back to the client. It also tracks configuration
files in your editor's workspace, and will refresh its in-memory configuration whenever those files are modified.
Contributing
If you're interested in contributing to ruff server - well, first of all, thank you! Second of all, you might find the contribution guide to be a useful resource. Finally, don't hesitate to reach out on our Discord if you have questions.