nushell/src
JT 1552eb921a
parser: Add cell path literal syntax (#8493)
# Description

This adds a new cell path literal syntax for use in any value position,
not just in a context where we expect a cell path.

This can be used to assign to a variable and then later use that
variable as a cell path.

Example:
```
> let cell_path = $.a.b
> {a: {b: 3}} | get $cell_path
3
```
# User-Facing Changes

This adds the syntax `$.a.b` to universally mean the cell path `a.b`,
even in a context that doesn't expect a cell path.

# 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` to check that you're using the standard code
style
- `cargo test --workspace` to check that all tests pass

> **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.
2023-03-17 15:19:41 +13:00
..
tests parser: Add cell path literal syntax (#8493) 2023-03-17 15:19:41 +13:00
command.rs Exit successfully from nu --help for compatibility with halp (#8478) 2023-03-16 13:03:29 +01:00
config_files.rs ensure that when nu evaluates files, it allows early returns (#7415) 2023-02-02 00:02:27 +01:00
logger.rs Use variable names directly in the format strings (#7906) 2023-01-29 19:37:54 -06:00
main.rs FEATURE: add the startup time to $nu (#8353) 2023-03-09 14:18:58 -06:00
README.md Begin directory contrib docs and split commands (#3650) 2021-06-19 12:06:44 +12:00
run.rs FEATURE: add the startup time to $nu (#8353) 2023-03-09 14:18:58 -06:00
signals.rs Cleanup of src/main.rs (#7801) 2023-01-20 10:44:49 -08:00
terminal.rs Move all functions of main.rs into modules (#7803) 2023-01-20 13:20:38 -08:00
test_bins.rs fix: fix commandline when called with no arguments (#8207) 2023-03-16 17:45:35 -05:00
tests.rs fix: fix commandline when called with no arguments (#8207) 2023-03-16 17:45:35 -05:00

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.