commandlineparser/commandline

Send only the actual error to Console.Error

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#184 opened on Nov 7, 2017

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 (2 comments) (0 reactions) (0 assignees)C# (4,280 stars) (461 forks)batch import
help wanted

Description

Currently all generated help text is sent to stderr (Console.Error) when an error occurs: https://github.com/commandlineparser/commandline/blob/7aa501d534a657c388f94f66127b4f8dde64ac59/src/CommandLine/Parser.cs#L199

Wouldn't it make more sense to only send the actual error there, and send the rest of the help text (both before and after) to stdout (Console.Out)?

Contributor guide

Tech stack
csharp
Domain
cli
Issue type
feature
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
2
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
C# programming
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
85
Research direction
Review the file src/CommandLine/Parser.cs around line 199 to identify where help text is written to Console.Error. Determine how to separate the error message from the help text, using Console.Out for help and Console.Error only for the actual error. Check if existing tests cover this behavior and need to be updated.