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# Description / User-Facing Changes Signals are no longer blocked for child processes launched from both interactive and non-interactive mode. The only exception is that `SIGTSTP`, `SIGTTIN`, and `SIGTTOU` remain blocked for child processes launched only from **interactive** mode. This is to help prevent nushell from getting into an unrecoverable state, since we don't support background jobs. Anyways, this fully fixes #9026. # Other Notes - Needs Rust version `>= 1.66` for a fix in `std::process::Command::spawn`, but it looks our current Rust version is way above this. - Uses `sigaction` instead of `signal`, since the behavior of `signal` can apparently differ across systems. Also, the `sigaction` man page says: > The sigaction() function supersedes the signal() function, and should be used in preference. Additionally, using both `sigaction` and `signal` is not recommended. Since we were already using `sigaction` in some places (and possibly some of our dependencies as well), this PR replaces all usages of `signal`. # Tests Might want to wait for #11178 for testing.
Nushell REPL
This directory contains the main Nushell REPL (read eval print loop) as part of the CLI portion of Nushell, which creates the nu binary itself.
Current versions of the nu binary will use the Nu argument parsing logic to parse the commandline arguments passed to nu, leaving the logic here to be a thin layer around what the core libraries.