mirror of
https://github.com/nushell/nushell.git
synced 2025-05-28 14:07:08 +02:00
6a274b860a
This is a follow-up to https://github.com/nushell/nushell/pull/8379 and https://github.com/nushell/nushell/discussions/8502. This PR makes it so that the new `?` syntax for marking a path member as optional short-circuits, as voted on in the [8502](https://github.com/nushell/nushell/discussions/8502) poll. Previously, `{ foo: 123 }.bar?.baz` would raise an error: ``` > { foo: 123 }.bar?.baz × Data cannot be accessed with a cell path ╭─[entry #15:1:1] 1 │ { foo: 123 }.bar?.baz · ─┬─ · ╰── nothing doesn't support cell paths ╰──── ``` Here's what was happening: 1. The `bar?` path member access returns `nothing` because there is no field named `bar` on the record 2. The `baz` path member access fails when trying to access a `baz` field on that `nothing` value After this change, `{ foo: 123 }.bar?.baz` returns `nothing`; the failed `bar?` access immediately returns `nothing` and the `baz` access never runs.
Nushell core libraries and plugins
These sub-crates form both the foundation for Nu and a set of plugins which extend Nu with additional functionality.
Foundational libraries are split into two kinds of crates:
- Core crates - those crates that work together to build the Nushell language engine
- Support crates - a set of crates that support the engine with additional features like JSON support, ANSI support, and more.
Plugins are likewise also split into two types:
- Core plugins - plugins that provide part of the default experience of Nu, including access to the system properties, processes, and web-connectivity features.
- Extra plugins - these plugins run a wide range of different capabilities like working with different file types, charting, viewing binary data, and more.