powershell/PSReservedParams

powershell/PSReservedParams is a PSScriptAnalyzer diagnostic emitted by tally for PowerShell snippets embedded in Dockerfiles.

Property	Value
Severity	Error
Category	PSScriptAnalyzer
Default	Disabled in tally
Auto-fix	No

tally disables this rule by default for Dockerfile RUN snippets because a RUN executes statements inline rather than defining cmdlets, parameters, or modules with external callers. Re-enable it with include = ["powershell/PSReservedParams"] or by setting rules.powershell.PSReservedParams.severity = "warning" in .tally.toml.

Description

You can’t redefine common parameters in an advanced function. Using the CmdletBinding or Parameter attributes creates an advanced function. The common parameters are are automatically available in advanced functions, so you can’t redefine them.

How

Change the name of the parameter.

Examples

Problematic code

function Test
{
    [CmdletBinding()]
    Param
    (
        $ErrorVariable,
        $Parameter2
    )
}

Correct code

function Test
{
    [CmdletBinding()]
    Param
    (
        $Err,
        $Parameter2
    )
}

Source

This rule documentation is adapted from Microsoft’s PSScriptAnalyzer documentation for ReservedParams, licensed under CC BY 4.0.

powershell/PSReservedCmdletChar

powershell/PSReviewUnusedParameter

⌘I

​Description

​How

​Examples

​Problematic code

​Correct code

​Source

Description

How

Examples

Problematic code

Correct code

Source