dotnet/command-line-api

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Command line parsing, invocation, and rendering of terminal output.

Stars: 3.7k
Forks: 428
Open beginner issues: 0
Indexed issues: 443

Dominant language: C#
License: MIT
Last GitHub push: Aug 17, 2026
Latest indexed: Sep 15, 2026
Contributing guide: Contributing guide
Code of conduct: Code of conduct
Beginner labels: help wanted
PR merge metrics: No merged PRs in 30d

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443 open issues indexed

bash completion script: tilde expansion Open

Area-Completions bug

dotnet/command-line-api#2142 · 5 comments · 1 reaction · 0 assignees · Indexed Sep 15, 2026
Create new Samples project with strong focus on best practices Open

Area-Documentation

dotnet/command-line-api#2145 · 0 comments · 2 reactions · 0 assignees · Indexed Sep 15, 2026
Problem running async Actions Open

bug

dotnet/command-line-api#2152 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
It should be dirt simple to replace or augment CliActions Open

needs discussion

dotnet/command-line-api#2154 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
All CLIs should support cancellation Open

needs discussion

dotnet/command-line-api#2155 · 7 comments · 1 reaction · 0 assignees · Indexed Sep 15, 2026
Return values of CliActions should be more than an integer Open

needs discussion

dotnet/command-line-api#2156 · 10 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Pre/post (aka non-exclusive) actions should be able to end execution Open

needs discussion

dotnet/command-line-api#2157 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Do we need post actions? Open

needs discussion

dotnet/command-line-api#2161 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Flowing data in System.CommandLine Open

needs discussion

dotnet/command-line-api#2162 · 4 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Feature Request: Directive to add IConfiguration keyvault pairs Open

dotnet/command-line-api#2168 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Fix `IL2091` by annotating the `T` with `[DynamicallyAccessedMembers(DynamicallyAccessedMemberTypes.PublicConstructors)]` Open

dotnet/command-line-api#2173 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
use https://github.com/dotnet/runtime/issues/76478 once it is implemented in .NET 8 Open

dotnet/command-line-api#2174 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
This isn't guaranteed to work in a NativeAOT app. Just because the app uses a `IList<double>`, it doesn't mean that `double[]`'s code is going to get preserved/generated. Open

bug

dotnet/command-line-api#2175 · 0 comments · 1 reaction · 0 assignees · Indexed Sep 15, 2026
Why are commands validated before options and arguments? Open

dotnet/command-line-api#2178 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Consider custom parsers and validators for directives Open

dotnet/command-line-api#2179 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Displaying help after parse error reporting should be configurable Open

Area-API Area-Help

dotnet/command-line-api#2191 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Some unit tests fail when run on a Windows machine set to a culture that doesn't use dot as the decimal separator Open

dotnet/command-line-api#2193 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Implementing a default command Open

dotnet/command-line-api#2196 · 4 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
dotnet-suggest-shim.zsh script error Open

dotnet/command-line-api#2198 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Completions don't work for symlinked executables Open

Area-Completions bug

dotnet/command-line-api#2201 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
New layer over this library - reviews asked Open

dotnet/command-line-api#2202 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
API summary does not distinguish `init` accessor from `set` Open

bug

dotnet/command-line-api#2214 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
HelpBuilder Extensibility Open

Area-Help bug

dotnet/command-line-api#2215 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Support grouping options in help Open

dotnet/command-line-api#2216 · 4 comments · 1 reaction · 0 assignees · Indexed Sep 15, 2026
UseHost() - Can't assign HelpAction() to root command or synchronous action to any command Open

dotnet/command-line-api#2221 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Expansion of BindingContext Open

dotnet/command-line-api#2222 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Where can I find updated documentation? Open

Area-Documentation bug

dotnet/command-line-api#2231 · 7 comments · 7 reactions · 0 assignees · Indexed Sep 15, 2026
The default value of a nullable "Array", "IEnumerable<T>", "IList<T>" or "ICollection<T>" should be "null" Open

dotnet/command-line-api#2232 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Improve Help customization Open

dotnet/command-line-api#2234 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Improve help sections layout. Open

dotnet/command-line-api#2236 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Usage showing wrong filename if .exe not used when calling program Open

dotnet/command-line-api#2240 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
CompletionAction doesn't display all possible matches when the commandline matches a command name or alias Open

Area-Completions

dotnet/command-line-api#2242 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Daily builds not published to nuget Open

dotnet/command-line-api#2243 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
FR: Support 3 cases for options in API: not given, given without value, given with value Open

dotnet/command-line-api#2244 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
System.CommandLine arguments without options Open

dotnet/command-line-api#2247 · 14 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Inconsitency with error CS0030: Cannot convert type Open

dotnet/command-line-api#2251 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Extend `AcceptOnlyFromAmong` with `bool ignoreCase = false` Open

Area-Parser and Binder needs discussion

dotnet/command-line-api#2254 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Having a sub-command with a name that matches its parent crashes the parser Open

Area-Parser and Binder bug

dotnet/command-line-api#2260 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
How to test parseArgument Open

Area-API question

dotnet/command-line-api#2262 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Remove sourcelink package dependency Open

dotnet/command-line-api#2264 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
incorrect argument in specified in exception Open

dotnet/command-line-api#2267 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Add UseHost for WebApplicationBuilder (or maybe IHostApplicationBuilder) Open

dotnet/command-line-api#2268 · 4 comments · 3 reactions · 0 assignees · Indexed Sep 15, 2026
System.CommandLine is missing NuGet package README file Open

Area-Documentation bug

dotnet/command-line-api#2269 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Type Binding Open

dotnet/command-line-api#2270 · 0 comments · 1 reaction · 0 assignees · Indexed Sep 15, 2026
[NETSDKE2E][Loc]With .NET8 preview RC2 installed on Loc OS, the string "description" is not localized in help text in CLI. Open

dotnet/command-line-api#2273 · 3 comments · 0 reactions · 1 assignee · Indexed Sep 15, 2026
`dotnet-suggest script Bash` outputting CRLF as line ending in Linux Open

Area-Completions bug

dotnet/command-line-api#2275 · 3 comments · 2 reactions · 0 assignees · Indexed Sep 15, 2026
Pass JSON as argument Open

dotnet/command-line-api#2276 · 8 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
The getting started tutorial should be clear on best practices to show default help when no options are provided Open

dotnet/command-line-api#2277 · 2 comments · 1 reaction · 0 assignees · Indexed Sep 15, 2026
Completion crashes when using `=` syntax for options Open

dotnet/command-line-api#2279 · 12 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Share IConsole interface between CommandLine and Microsoft.Extensions.Logging.Console Open

dotnet/command-line-api#2281 · 1 comment · 2 reactions · 0 assignees · Indexed Sep 15, 2026

dotnet/command-line-api

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