PowerShell / PowerShell/PSScriptAnalyzer

Rule request `AvoidRedundantValueFromPipelineByPropertyName`

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Dominant language
C#
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Merged PRs (30d)
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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).

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.

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.

Assessment

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

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