@hackage / snowball

The Snowball library is used to compute the stems of words in natural languages.

Compared to the older stemmer package, this one:

• Correctly handles unicode without relying on the system locale

• Takes greater care to avoid memory leaks and to be thread safe

• Uses Text rather than String

• Gets rid of the need for stemWords by using rewrite rules to make map stem efficient

• Includes a more recent release of Snowball

• Attempts to comply with the Snowball licensing terms

• Supports SafeHaskell when available and is otherwise Haskell2010

• Comes with a test suite

However, although this code is written from scratch, it is heavily modeled after the code of the "stemmer" package.