regex-base

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

https://wiki.haskell.org/Regular_expressions

Version on this page:	0.94.0.1
LTS Haskell 24.16:	0.94.0.3
Stackage Nightly 2025-10-24:	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@sha256:6e3546b73cd5489201d481aa645a531f2c61aa317984e31c5f379ac0bcbfbfad,2636

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 10 packages in lts-18.4(full list with versions):

lens-regex, regex, regex-compat, regex-compat-tdfa, 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