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# Description Fixes: #12690 The issue is happened after https://github.com/nushell/nushell/pull/12056 is merged. It will raise error if user doesn't supply required parameter when run closure with do. And parser adds a `$it` parameter when parsing closure or block expression. I believe the previous behavior is because we allow such syntax on previous version(0.44): ```nushell let x = { print $it } ``` But it's no longer allowed after 0.60. So I think they can be removed. # User-Facing Changes ```nushell let tmp = { let it = 42 print $it } do -c $tmp ``` should be possible again. # Tests + Formatting Added 1 test
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.