Issues

• Strict Text wrapper unnecessarily decodes to Char for text-2.*

  haskell/alex#280 · Filter by author sol opened on Sep 19, 2025
  6

• Is there a way to modify the default lexical error message from within an .x file.

  haskell/alex#276 · Filter by author yamez3-8B opened on Jun 25, 2025

• Is there a way to be able to run a lexer from two different start codes?

  haskell/alex#267 · Filter by author yamez3-8B opened on Feb 24, 2025
  1

• Is module DFS really needed?

  haskell/alex#232 · Filter by author ivanperez-keera opened on Apr 27, 2023
  2

• UTF-8 and text 2.0

  re: unicode
  haskell/alex#211 · Filter by author pnotequalnp opened on Mar 15, 2022
  3

• Agda-style Lexing

  discussion
  haskell/alex#203 · Filter by author Ericson2314 opened on Jan 23, 2022
  3

• How to build alex from git sources? Instructions in README.md are broken.

  bugbuild / installdocumentation
  haskell/alex#198 · Filter by author andreasabel opened on Jan 22, 2022
  3

• Explore unboxed parser representations

  haskell/alex#193 · Filter by author Boarders opened on Sep 15, 2021

• Feature request: Add support for UTF8 bytestring wrappers (utf8-bytestring-basic, utf8-bytestring-posn...)

  haskell/alex#192 · Filter by author notYuriy opened on Aug 10, 2021
  1

• Don't vendor Ranged-sets?

  haskell/alex#182 · Filter by author Ericson2314 opened on Mar 19, 2021
  2

• Allow custom error types in monad wrappers

  feature requestwrapper
  haskell/alex#178 · Filter by author anka-213 opened on Feb 26, 2021
  8

• Empty language crashes alex with (Array.!): undefined array element

  haskell/alex#164 · Filter by author andreasabel opened on Oct 10, 2020

• Alex slow on big regular expressions

  haskell/alex#163 · Filter by author andreasabel opened on Oct 8, 2020

• Feature: allow the user to capture groups on regex

  feature request
  haskell/alex#148 · Filter by author german1608 opened on Oct 9, 2019
  4

• Builtin support for nested comments or a canonical way to handle them

  haskell/alex#133 · Filter by author vmchale opened on Jan 22, 2019
  1

• Use unsafeShiftR in utf8Encode

  haskell/alex#129 · Filter by author sjakobi opened on Nov 21, 2018
  3

• Provide macros corresponding to the Unicode general categories

  haskell/alex#126 · Filter by author sjakobi opened on Jul 27, 2018
  11

• Feature request: provide Template Haskell quasiquoter that generates lexer definition in-place

  haskell/alex#108 · Filter by author sergv opened on Jun 17, 2017
  1

• GHC-generated LINE annotation might cause non-deterministic build

  info neededLINE annotationsoutput formattingupstream
  haskell/alex#105 · Filter by author cartazio opened on May 16, 2017
  4

• strict-bytestring wrapper is undocumented

  haskell/alex#85 · Filter by author thomie opened on Feb 11, 2016

• Get rid of overly long lines in generated .hs file

  feature requestoutput formatting
  haskell/alex#84 · Filter by author alanz opened on Jan 11, 2016
  14

• Control case-sensitivity

  haskell/alex#74 · Filter by author punund opened on Nov 26, 2015
  1

• feature request: support incremental/streaming lexing

  feature request
  haskell/alex#67 · Filter by author cartazio opened on Jun 29, 2015
  11

• basic-bytestring wrapper does not work with left contexts

  haskell/alex#53 · Filter by author jmoy opened on Dec 20, 2014
  1

• Expose library component

  haskell/alex#45 · Filter by author Fuuzetsu opened on Aug 23, 2014
  1