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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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| .. | ||
| builder.rs | ||
| de.rs | ||
| error.rs | ||
| lib.rs | ||
| ser.rs | ||
| util.rs | ||
| value.rs | ||