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# Description This PR improves the error message if an environment variable (that's visible before the parser begins) is used in the form of `$PATH` instead of `$env.PATH`. Before: ``` Error: nu::parser::variable_not_found × Variable not found. ╭─[entry #31:1:1] 1 │ echo $PATH · ──┬── · ╰── variable not found. ╰──── ``` After: ``` Error: nu::parser::env_var_not_var × Use $env.PATH instead of $PATH. ╭─[entry #1:1:1] 1 │ echo $PATH · ──┬── · ╰── use $env.PATH instead of $PATH ╰──── ``` # User-Facing Changes Just the improvement to the error message # 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 -A clippy::needless_collect -A clippy::result_large_err` to check that you're using the standard code style - `cargo test --workspace` to check that all tests pass - `cargo run -- crates/nu-std/tests/run.nu` 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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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.