Latest: Linux: Windows:

The module Data.Unicode.NormalizationInsensitive provides the NI type constructor which can be parameterized by a string-like type like: String, ByteString, Text, etc.. Comparisons of values of the resulting type will be insensitive to normalization.

This is very similar in spirit to the case-insensitive package, and is in fact based on the same code.

This package uses NFC internally, although that shouldn't matter to you, unless you use unsafeMk.