Issues

• Flags with default values (--flag{N}) do not round-trip correctly through config file serialization

  CLIUtils/CLI11#1455 · Filter by author thewhoo opened on Sep 10, 2026

• Help not shown for a subcommand if parent subcommand has a positional option

  CLIUtils/CLI11#1450 · Filter by author maxsharabayko opened on Aug 28, 2026

• Support for projects with -fno-exceptions

  CLIUtils/CLI11#1443 · Filter by author YanzhaoW opened on Aug 18, 2026
  4

• [Enhancement] Setting a delimiter for container-like options should disable greedy matching

  CLIUtils/CLI11#1423 · Filter by author Grzzlwmpf opened on Aug 2, 2026
  3

• Check to see if anything else can move to pre-compile

  CLIUtils/CLI11#1414 · Filter by author henryiii opened on Jul 31, 2026

• add_option(...)->check(...)->default_val(...) throws immediately instead of when parsing

  CLIUtils/CLI11#1375 · Filter by author RL-S opened on Jul 1, 2026

• CLI::CheckedTransformer, throws error on parsing enum with stream operator<< overload and default value defined

  CLIUtils/CLI11#1330 · Filter by author OBarronCS opened on Apr 17, 2026
  4

• Full migration to c++26 modules via a separate branch

  CLIUtils/CLI11#1327 · Filter by author mccakit opened on Apr 7, 2026
  4

• Module doesn't work

  CLIUtils/CLI11#1318 · Filter by author mccakit opened on Mar 23, 2026
  8

• Colorful help

  CLIUtils/CLI11#1285 · Filter by author dkaszews opened on Jan 20, 2026
  2

• Prepare for localization

  CLIUtils/CLI11#1277 · Filter by author jeblad opened on Jan 1, 2026
  8

• Migrate code base to C++26

  CLIUtils/CLI11#1257 · Filter by author soroshsabz opened on Nov 21, 2025
  8

• Proposing OSS-Fuzz integration (needs primary_contact Google-account email)

  CLIUtils/CLI11#1224 · Filter by author TheodorNEngoy opened on Oct 14, 2025
  1

• Handling typos in commands and subcommands

  CLIUtils/CLI11#1149 · Filter by author Hind-M opened on Apr 16, 2025
  4

• Add support for Unicode string in app usage under windows

  CLIUtils/CLI11#1130 · Filter by author TheNicker opened on Mar 3, 2025

• howto: simulate K V checked args list

  CLIUtils/CLI11#1070 · Filter by author leaveye opened on Sep 15, 2024
  2

• widen convert faild in Windows

  CLIUtils/CLI11#1042 · Filter by author TianZerL opened on May 18, 2024
  3

• Fix envname with validator bug introduced in v2.4.0

  CLIUtils/CLI11#1032 · Filter by author johanpel opened on Apr 16, 2024
  3

• I think a simple enough test would be, for a specific target:

  CLIUtils/CLI11#1015 · Filter by author phlptp opened on Mar 11, 2024

• No error message about invalid arguments when providing --help

  CLIUtils/CLI11#1010 · Filter by author Garados007 opened on Feb 20, 2024
  2

• Invalid subcommand error message is not helpful

  CLIUtils/CLI11#1009 · Filter by author Garados007 opened on Feb 20, 2024
  1

• UWP broken by Unicode support in 2.4

  CLIUtils/CLI11#997 · Filter by author henryiii opened on Feb 5, 2024
  1

• Ability to modify exception messages

  CLIUtils/CLI11#984 · Filter by author levi-de-koning opened on Jan 22, 2024
  1

• WSL vs Powershell may cause Undefined Behavior.

  CLIUtils/CLI11#937 · Filter by author JulianKnodt opened on Oct 17, 2023
  2

• Hooking custom enum serialization framework into CLI11

  CLIUtils/CLI11#908 · Filter by author captainurist opened on Jul 13, 2023
  16