tags: vim regex
title: Vim Regex

See [vimregex](https://vimregex.com/).

## Change Case
```
:s/[A-Z]\+/\l& -- lowercase first letter with \l
:s/[A-Z]\+/\L& -- lowercase all letters with \L
:s/[a-z]\+/\u& -- uppercase first letter with \u
:s/[a-z]\+/\U& -- uppercase all letters with \U
```
## Title Case
From `:help case`
```
:s/\v<(.)(\w*)/\u\1\L\2/g
```