regex-base

Common "Text.Regex.*" API for Regex matching

https://wiki.haskell.org/Regular_expressions

Version on this page:	0.94.0.1@rev:1
LTS Haskell 24.17:	0.94.0.3
Stackage Nightly 2025-10-31:	0.94.0.3
Latest on Hackage:	0.94.0.3

See all snapshots regex-base appears in

BSD-3-Clause licensed by Christopher Kuklewicz

Maintained by Herbert Valerio Riedel, Andreas Abel

This version can be pinned in stack with:regex-base-0.94.0.1@sha256:35ff2d13c0e3ac364469c19e4c7c8775f5148977d8fcef58a424df0a10a53fa7,2608

Module documentation for 0.94.0.1

Text
- Text.Regex
  - Text.Regex.Base

Depends on 6 packages(full list with versions):

array, base, bytestring, containers, mtl, text

Used by 9 packages in nightly-2021-09-18(full list with versions):

lens-regex, regex, regex-compat, regex-pcre, regex-pcre-builtin, regex-posix, regex-tdfa, regex-with-pcre, scalpel-core

This package does not provide the ability to do regular expression matching. Instead, it provides the type classes that constitute the abstract API that is implemented by regex-* backends such as:

See also https://wiki.haskell.org/Regular_expressions for more information.

Changes

0.94.0.1

Workaround for {-# LANGUAGE Haskell2010 #-} parser regression introduced in GHC 9.0
Optimization flag -O2 has been removed

0.94.0.0

Breaking change: Switch RegExp API from the previously used Monad(fail) to MonadFail(fail) to denote matching failures
Define Extract Text instances for strict and lazy Text types
Compatibility with base-4.13.0
Explicitly declare all modules Safe under SafeHaskell for GHC 7.4 and higher