# How to use the one-eye kirby in vim

This is the easiest way to manipulate multiple lines of text with vim motions.

## Example

Say you have this in your .env

```
LOG_CHANNEL=stack
LOG_STACK=single
LOG_DEPRECATIONS_CHANNEL=null
LOG_LEVEL=debug
```

And you want to turn it into

```
APP_LOG_CHANNEL=stack
APP_LOG_STACK=single
APP_LOG_DEPRECATIONS_CHANNEL=null
APP_LOG_LEVEL=debug
```

1. Select the lines you want to manipulate
2. Run `:s/(.*)=` (you might have to \ escape the ( depending on your editor)
3. Now everything before the `=` is your *capturing group* 1. You can have as many capture groups as you want.
4. Now as part of the same expression you can do `APP_\1=`
5. Final expression is `:s/(.*)=/APP_\1=`