Hacktoberfest 2026: the issues maintainers tagged for October, open and beginner-friendly. Browse Hacktoberfest issues

Rule request `AvoidRedundantValueFromPipelineByPropertyName`

Open
#2,129 2 comments 0 reactions 0 assignees View on GitHub

Nobody has claimed this yet.

Assessment

Difficulty
3/5
Estimated time
1-2 days
Newbie friendliness
45/100
Issue type
Feature
Clarity
Mostly clear
Activity status
Stale
Tech stack
csharp, powershell
Domain
tooling

Research direction

Start by reading the linked PowerShell issue #25953, then inspect existing PSScriptAnalyzer rules for parameter attributes and their tests. Implement a rule for parameters using both ValueFromPipelineByPropertyName and ValueFromPipeline, and verify that the rule reports this redundant combination without flagging valid usage.

Written by the indexing model from the issue text.

Description

As concluded here https://github.com/PowerShell/PowerShell/issues/25953

The ValueFromPipelineByPropertyName parameter attribute should not be used with the ValueFromPipeline parameter attribute because it would not have any effect (the ValueFromPipeline attribute overrules the ValueFromPipelineByPropertyName attribute).

Dominant language
C#
Stars
2.2k
Forks
415
Avg merge
13h 1m
Merged PRs (30d)
2

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

More from PowerShell/PSScriptAnalyzer

All issues in PowerShell/PSScriptAnalyzer

Similar issues

More C# issues

Get new issues in your inbox

A short digest of beginner-friendly GitHub issues.