commandlineparser/commandline

Built in Help and Version output goes to stderr not stdout.

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#399 opened on Jan 23, 2019

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 (13 comments) (0 reactions) (0 assignees)C# (4,280 stars) (461 forks)batch import
good first issue

Description

The built in --help and --version outputs are printed to stderr instead of stdout, you have to redirect them to use the commands properly.

test --version returns the version number, but on stderr not stdout.

e.g. test --version 2>nul returns no output. test --version 2>&1 prints the version to stdout as expected.

Contributor guide

Tech stack
csharp
Domain
cli
Issue type
bug
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
1
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
under 1 hour
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
stale
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
clear
Prerequisites
Basic knowledge of C#Understanding of standard output streamsFamiliarity with GitHub pull request workflow
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
90
Research direction
Locate where the built in help and version are printed (likely in HelpText.cs or Parser.cs). Change the stream from stderr (Console.Error) to stdout (Console.Out). Check the issue comments for any design considerations; if none, submit a PR directly adjusting the output stream.