## Function: SB-UNICODE:CASEFOLD
[![package](https://img.shields.io/badge/Package-SB--UNICODE-5f9ea0.svg?style=social&colorA=999999)](../) [![type](https://img.shields.io/badge/Type-Function-5f9ea0.svg?style=social&colorA=999999)](../#function) [![github](https://img.shields.io/badge/GitHub-View_the_source-5f9ea0.svg?style=social&colorA=999999&logo=github)](https://github.com/sbcl/sbcl/blob/master/src/code/target-unicode.lisp/) 

> Returns the full casefolding of STRING according to the Unicode standard.
> Casefolding removes case information in a way that allows the results to be used
> for case-insensitive comparisons.
> The result is not guaranteed to have the same length as the input.

### Lambda list
```cl
(string)
```