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# Description
This PR uses `str::lines` to simplify the `lines` command (and one other
section of code). This has two main benefits:
1. We no longer need to use regex to split on lines, as `str::lines`
splits on `\r\n` or `\n`.
2. We no longer need to handle blank empty lines at the end. E.g.,
`str::lines` results in `["text"]` for both `"test\n"` and `"text"`.
These changes give a slight boost to performance for the following
benchmarks:
1. lines of `Value::String`:
```nushell
let data = open Cargo.lock
1..10000 | each { $data | timeit { lines } } | math avg
```
current main: 392µs
this PR: 270µs
2. lines of external stream:
```nushell
1..10000 | each { open Cargo.lock | timeit { lines } } | math avg
```
current main: 794µs
this PR: 489µs
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|---|---|---|
| .. | ||
| nu-cli | ||
| nu-cmd-base | ||
| nu-cmd-dataframe | ||
| nu-cmd-extra | ||
| nu-cmd-lang | ||
| nu-color-config | ||
| nu-command | ||
| nu-engine | ||
| nu-explore | ||
| nu-glob | ||
| nu-json | ||
| nu-lsp | ||
| nu-parser | ||
| nu-path | ||
| nu-plugin | ||
| nu-pretty-hex | ||
| nu-protocol | ||
| nu-std | ||
| nu-system | ||
| nu-table | ||
| nu-term-grid | ||
| nu-test-support | ||
| nu-utils | ||
| nu_plugin_custom_values | ||
| nu_plugin_example | ||
| nu_plugin_formats | ||
| nu_plugin_gstat | ||
| nu_plugin_inc | ||
| nu_plugin_python | ||
| nu_plugin_query | ||
| README.md | ||
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.