commandlineparser/commandline

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The best C# command line parser that brings standardized *nix getopt style, for .NET. Includes F# support

Stars: 4.8k
Forks: 478
Open beginner issues: 0
Indexed issues: 265

Dominant language: C#
License: MIT
Last GitHub push: Mar 7, 2023
Latest indexed: Sep 15, 2026
Contributing guide: No contributing guide
Code of conduct: No code of conduct
Beginner labels: good first issue help wanted
PR merge metrics: No merged PRs in 30d

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265 issues indexed so far

Built in Version Command Does What? Open

commandlineparser/commandline#367 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
How to check if option exists? Open

enhancement

commandlineparser/commandline#369 · 6 comments · 4 reactions · 0 assignees · Indexed Sep 15, 2026
Question: Does the library provide an echo or summary string capability? Open

commandlineparser/commandline#370 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Example with Option with IEnumerable<string> broken - Sequence contains more than one element Open

good first issue

commandlineparser/commandline#377 · 6 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Enum with 0 value not shown on Example Open

bug good first issue

commandlineparser/commandline#379 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Support for arguments that require each other but are optional Open

commandlineparser/commandline#383 · 2 comments · 2 reactions · 0 assignees · Indexed Sep 15, 2026
ParseArguments<T> with only a single TOptions doesnt respect Verb attribute Open

commandlineparser/commandline#384 · 3 comments · 3 reactions · 0 assignees · Indexed Sep 15, 2026
Built in Help and Version output goes to stderr not stdout. Open

good first issue

commandlineparser/commandline#399 · 13 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Configurable conventions Open

commandlineparser/commandline#402 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Proposal for change: Remove raising exception when Copyright or company assembly attributes are null and set with default values Open

commandlineparser/commandline#403 · 3 comments · 2 reactions · 0 assignees · Indexed Sep 15, 2026
How to generate help text at runtime for logging purposes Open

commandlineparser/commandline#405 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Parser fails when an empty value is given Open

commandlineparser/commandline#412 · 2 comments · 1 reaction · 0 assignees · Indexed Sep 15, 2026
Why does ParserSettings implement IDisposable? Open

commandlineparser/commandline#417 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Proposal for handling multiple mutual exclusive sets Open

commandlineparser/commandline#419 · 3 comments · 10 reactions · 0 assignees · Indexed Sep 15, 2026
Options with mixed required and optional incompatible with nullable reference types Open

commandlineparser/commandline#435 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Method for Assembling Custom Help Info Open

commandlineparser/commandline#446 · 2 comments · 2 reactions · 0 assignees · Indexed Sep 15, 2026
Load options dynamically by System.Type only working for verbs. Open

feature request

commandlineparser/commandline#450 · 4 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
System.InvalidOperationException: 'Sequence contains more than one element' Open

commandlineparser/commandline#463 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Is there support for Dependency Injection Open

question

commandlineparser/commandline#466 · 12 comments · 10 reactions · 0 assignees · Indexed Sep 15, 2026
How to contribute to Wiki Documentation Open

announcement documentation

commandlineparser/commandline#486 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Seperator does not appear in help text when diplaying default values Open

enhancement

commandlineparser/commandline#490 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Please add support for forward slash Open

question

commandlineparser/commandline#498 · 10 comments · 7 reactions · 0 assignees · Indexed Sep 15, 2026
Why is DefaultSentenceBuilder private? Open

question

commandlineparser/commandline#503 · 2 comments · 1 reaction · 0 assignees · Indexed Sep 15, 2026
Use keyword to set positional argument Open

question

commandlineparser/commandline#515 · 4 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
FormatCommandLine does not output options marked as hidden Open

Area: UnParser

commandlineparser/commandline#521 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
How to make an input parameter/flag default to a named Environment Variable? Open

question

commandlineparser/commandline#524 · 1 comment · 1 reaction · 0 assignees · Indexed Sep 15, 2026
Formatting help text (ends of line) Open

question

commandlineparser/commandline#529 · 21 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Dynamic defaults? Open

question

commandlineparser/commandline#530 · 7 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Outputting help text as individual lines Open

question

commandlineparser/commandline#559 · 5 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
HelpText ignoring AutoHelp and AutoVersion settings after successful parsing. Open

commandlineparser/commandline#584 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Is it possible to add -h, -v to --help, --version? Open

commandlineparser/commandline#585 · 2 comments · 6 reactions · 0 assignees · Indexed Sep 15, 2026
[Feature request] Let HelpText.AutoBuild method populate HelpText instance according to parser settings Open

feature request

commandlineparser/commandline#595 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Parser still recognizes --help option even when i set the parser setting "AutoHelp" to false Open

commandlineparser/commandline#596 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Design discussion: how to handle --help option Open

commandlineparser/commandline#600 · 5 comments · 3 reactions · 0 assignees · Indexed Sep 15, 2026
Corner cases where getopt behavior is not mimiced: -- or --help as string values Open

commandlineparser/commandline#601 · 10 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Add MapResult example to HelpText Configuration Wiki Open

commandlineparser/commandline#602 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Can I use command without verb when verbs are declared? Open

commandlineparser/commandline#603 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
DashDash (--) doesn't work properly with multi-value options Open

commandlineparser/commandline#605 · 4 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Values are not set properly wit multiple bool arguments Open

commandlineparser/commandline#611 · 4 comments · 1 reaction · 0 assignees · Indexed Sep 15, 2026
ushort and short not supported Open

enhancement

commandlineparser/commandline#612 · 6 comments · 3 reactions · 0 assignees · Indexed Sep 15, 2026
Common options when using verbs Open

commandlineparser/commandline#624 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
CommandLine.HelpRequestedError and CommandLine.VersionRequestedError Open

question

commandlineparser/commandline#630 · 7 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Is it possible to use repeated non-option-argument options? Open

commandlineparser/commandline#631 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Generate list of enum values in help text as lowercase Open

commandlineparser/commandline#632 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
After customizing help generation, hep VERB does not work Open

question

commandlineparser/commandline#633 · 16 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
USAGE not displayed when multiple verbs defined Open

commandlineparser/commandline#641 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Order of usage example arguments does not match argument 'help' list ordering Open

commandlineparser/commandline#646 · 1 comment · 1 reaction · 0 assignees · Indexed Sep 15, 2026
have autohelp print values of enums in verbs? Open

commandlineparser/commandline#651 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Interactive mode Open

feature request

commandlineparser/commandline#653 · 7 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Interactivity & Parent-Child Commands Open

question

commandlineparser/commandline#654 · 8 comments · 1 reaction · 0 assignees · Indexed Sep 15, 2026

commandlineparser/commandline

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