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<!-- if this PR closes one or more issues, you can automatically link the PR with them by using one of the [*linking keywords*](https://docs.github.com/en/issues/tracking-your-work-with-issues/linking-a-pull-request-to-an-issue#linking-a-pull-request-to-an-issue-using-a-keyword), e.g. - this PR should close #xxxx - fixes #xxxx you can also mention related issues, PRs or discussions! --> - closes #16159 # Description <!-- Thank you for improving Nushell. Please, check our [contributing guide](../CONTRIBUTING.md) and talk to the core team before making major changes. Description of your pull request goes here. **Provide examples and/or screenshots** if your changes affect the user experience. --> The setup in #16159 produced a `ByteStream` that held the `ShellError` inside an `std::io::Error`. For exactly this setup is the `ShellErrorBridge` designed, while figuring out what happened I found out that inside `BytesStream::into_bytes` a sneaky `ShellErrorBridge` was hiding: <img width="1034" height="580" alt="image" src="https://github.com/user-attachments/assets/a0d16ca6-1a60-4c3c-a4cb-5e4b0695f20c" /> To fix this, I try to unwrap the bridge and if that is possible, return the original `ShellError`. This is done at multiple occasions inside `byte_stream.rs` already. With this fix, we get the original error that looks like this: <img width="1439" height="733" alt="image" src="https://github.com/user-attachments/assets/73f4dee7-f986-4f68-9c2c-0140a6e9e2b2" /> # User-Facing Changes <!-- List of all changes that impact the user experience here. This helps us keep track of breaking changes. --> None, just a better error. # 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 > ``` --> - 🟢 `toolkit fmt` - 🟢 `toolkit clippy` - 🟢 `toolkit test` - 🟢 `toolkit test stdlib` # 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. --> To have less situations with other I/O errors, I opened #16160 to find out faster what other error was passed around.
nu-protocol
The nu-protocol crate holds the definitions of structs/traits that are used throughout Nushell. This gives us one way to expose them to many other crates, as well as make these definitions available to each other, without causing mutually recursive dependencies.