Unify handling of missing parameter(s)/option(s)

[JanKrivanek]

Current situation:

Some cases are handled by top-level parser in sdk as invalid comand (Example: #4787 (comment)), some are handled within templating with an paropriate exit code (Example:

templating/docs/Exit-Codes.md

Line 100 in c2f9202

_Examples:_

)

Expected behavior:

All cases of missing mandatory arguments or options will lead to same exit code. The handling should ideally be unified within the System.CommandLine Parser

[marcpopMSFT]

This issue is being closed as won't fix. It has been open for an extended period without maintainer activity or community demand, and is unlikely to be addressed.

The dotnet/templating repository has been consolidated into dotnet/sdk. If this issue is still important to you, please open a new issue in dotnet/sdk with updated context so the team can re-evaluate.

Triage details

Summary: Request to unify handling of missing mandatory arguments/options across System.CommandLine parser and templating engine

Reasoning: This is a 4-year-old issue about unifying parameter/option handling between the SDK parser and templating engine. It has zero upvotes, zero comments, and no activity since May 2023. The author (JanKrivanek, a former maintainer) filed it as a code quality improvement. With the consolidation into dotnet/sdk, this unification concern becomes an internal SDK implementation detail with minimal community demand.