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a9582e1c62
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Artemiy a9582e1c62
Nothing return type (#9935) 
# Description
Fix #9928. When parsing input/output types `nothing` was incorrectly
coerced to `any`. This is addressed by changing how
[to_type](0ad1ad4277/crates/nu-protocol/src/syntax_shape.rs (L121))
method handles `nothing` syntax shape. Also `range` syntax shape is
addressed the same way.

# User-Facing Changes
`nothing` and `range` are correctly displayed in help and strictly
processed by type checking. This will break definitions that were not in
fact output nothing or range and incorrect uses of functions which input
nothing or range.

Examples of correctly defined functions:

![image](https://github.com/nushell/nushell/assets/17511668/d9f73438-d8a7-487f-981a-7e791b42766e)

![image](https://github.com/nushell/nushell/assets/17511668/2d5fe3a2-94be-4d25-9522-2ea38e528fe4)

Examples of incorrect definitions and uses of functions:

![image](https://github.com/nushell/nushell/assets/17511668/6a2f9fba-abfa-47fe-8b53-bb348e532cd8)

![image](https://github.com/nushell/nushell/assets/17511668/b1fbf9f6-fd75-4b80-9f38-26cc7c2ecc25)

![image](https://github.com/nushell/nushell/assets/17511668/718ef98b-3d7a-433d-af97-39a225ef34e5)


# Tests + Formatting
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> **Note**
> from `nushell` you can also use the `toolkit` as follows
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# After Submitting
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2023-08-07 18:10:01 +12:00
..
src Nothing return type (#9935) 2023-08-07 18:10:01 +12:00
tests Clean up tests containing unnecessary cwd: tokens (#9692) 2023-07-17 18:43:51 +02:00
Cargo.toml bump to dev version 0.83.2 (#9866) 2023-07-30 22:16:57 +02:00
LICENSE Fix rest of license year ranges (#8727) 2023-04-04 09:03:29 +12:00
README.md Add nu-protocol 2021-09-02 13:29:43 +12:00

README.md

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.