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# Description Instead of handling a foreground process being stopped in any way, we were simply ignoring SIGTSTP (which the terminal usually sends to the foreground process group when Ctrl-Z is pressed), and propagating this to our foreground children. This works for most processes, but it generally fails for applications which put the terminal in raw mode[1] and implement their own suspension mechanism (typically TUI apps like helix[2], neovim[3], top[4] or amp[5]). In these cases, triggering suspension within the app results in the terminal getting blocked, since the application is waiting for a SIGCONT, while nushell is waiting for it to exit. Fix this by unblocking SIGTSTP for our foreground children (neovim, helix and probably others send this to themselves while trying to suspend), and displaying the following message whenever one of them gets stopped: nushell currently does not support background jobs press any key to continue Pressing any key will then send SIGCONT to the child's process group and resume waiting. This fix is probably going to be superseded by a proper background job implementation (#247) at some point, but for now it's better than completely blocking the terminal. [1] https://docs.rs/crossterm/latest/crossterm/terminal/index.html#raw-mode [2] https://helix-editor.com/ [3] https://neovim.io/ [4] https://man7.org/linux/man-pages/man1/top.1.html [5] https://amp.rs/ - fixes #1038 - fixes #7335 - fixes #10335 # User-Facing Changes While any foreground process is running, Ctrl-Z is no longer ignored. Instead, the message described above is displayed, and nushell waits for a key to be pressed. # Tests + Formatting <!-- Don't forget to add tests that cover your changes. Make sure you've run and fixed any issues with these commands: - `cargo fmt --all -- --check` to check standard code formatting (`cargo fmt --all` applies these changes) - `cargo clippy --workspace -- -D warnings -D clippy::unwrap_used` to check that you're using the standard code style - `cargo test --workspace` to check that all tests pass (on Windows make sure to [enable developer mode](https://learn.microsoft.com/en-us/windows/apps/get-started/developer-mode-features-and-debugging)) - `cargo run -- -c "use toolkit.nu; toolkit test stdlib"` to run the tests for the standard library > **Note** > from `nushell` you can also use the `toolkit` as follows > ```bash > use toolkit.nu # or use an `env_change` hook to activate it automatically > toolkit check pr > ``` --> # After Submitting <!-- If your PR had any user-facing changes, update [the documentation](https://github.com/nushell/nushell.github.io) after the PR is merged, if necessary. This will help us keep the docs up to date. --> |
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README.md |
Operating system specific bindings used by Nushell.
Currently primarily wrappers around processes and ways to gather process info from the system
Internal Nushell crate
This crate implements components of Nushell and is not designed to support plugin authors or other users directly.