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# Description
This PR adds the `@category` attribute to nushell for use with custom
commands.
### Example Code
```nushell
# Some example with category
@category "math"
@search-terms "addition"
@example "add two numbers together" {
blah 5 6
} --result 11
def blah [
a: int # First number to add
b: int # Second number to add
] {
$a + $b
}
```
#### Source & Help
```nushell
❯ source blah.nu
❯ help blah
Some example with category
Search terms: addition
Usage:
> blah <a> <b>
Flags:
-h, --help: Display the help message for this command
Parameters:
a <int>: First number to add
b <int>: Second number to add
Input/output types:
╭─#─┬─input─┬─output─╮
│ 0 │ any │ any │
╰───┴───────┴────────╯
Examples:
add two numbers together
> blah 5 6
11
```
#### Show the category
```nushell
❯ help commands | where name == blah
╭─#─┬─name─┬─category─┬─command_type─┬────────description─────────┬─────params─────┬──input_output──┬─search_terms─┬─is_const─╮
│ 0 │ blah │ math │ custom │ Some example with category │ [table 3 rows] │ [list 0 items] │ addition │ false │
╰───┴──────┴──────────┴──────────────┴────────────────────────────┴────────────────┴────────────────┴──────────────┴──────────╯
```
# User-Facing Changes
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helps us keep track of breaking changes. -->
# Tests + Formatting
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Don't forget to add tests that cover your changes.
Make sure you've run and fixed any issues with these commands:
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- `cargo run -- -c "use toolkit.nu; toolkit test stdlib"` to run the
tests for the standard library
> **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
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/cc @Bahex
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.