forked from extern/nushell
# Description Fixes: #10410 So the following script is possible: ```nushell def a [b: any = null] { let b = ($b | default "default_b"); } a "given_b" ``` ## About the change When parsing signature, and nushell meets something like `a: any`, it force the parser to treat `a` as `any` type. This is what `arg_explicit_type` means, it's only set when we goes into `ParseMode::TypeMode`, and it will be reset to `false` if the token goes to next argument. so, when we have something like this: `def a [b: any = null] { $b }`, the type of `$b` won't be overwritten. But if we have something like this: `def a [b = null] { $b }`, the type of `$b` is not annotated, so we make it to be `nothing`(which is the type of null)
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.