I add

AfterMarkdown.md

-ExtensionName

The Extensions Name. Accepts WildCards.

Type: String[]
Parameter Sets: ExtensionName
Aliases: 

Required: True
Position: Named
Default value: 
Accept pipeline input: False
Accept wildcard characters: True

-Category

Filter Extensions by Categories. Valid categoies are 'Languages', 'Snippets', 'Linters', 'Debuggers', 'Other', 'Themes' and 'Productivity'

Type: String[]
Parameter Sets: (All)
Aliases: 

Required: False
Position: Named
Default value: 
Accept pipeline input: False
Accept wildcard characters: False

-Test

{{Fill Test Description}}

Type: String[]
Parameter Sets: (All)
Aliases: 

Required: False
Position: Named
Default value: 
Accept pipeline input: False
Accept wildcard characters: False

AfterParams.ps1

[CmdletBinding(DefaultParameterSetName="ExtensionName")]
    [OutputType([PSCustomObject])]
    param
    (
        [Parameter(ParameterSetName="ExtensionName",Mandatory=$true,ValueFromPipelineByPropertyName=$false,Position=0)]
        [SupportsWildcards()]
        [PSDefaultValue(Help='*')]
        [string[]]$ExtensionName = '*',

        [Parameter(ParameterSetName="DisplayName",Mandatory=$true,ValueFromPipelineByPropertyName=$true,Position=0)]
        [string[]]$DisplayName,

        [Parameter(Mandatory=$false,ValueFromPipelineByPropertyName=$true,Position=1)]
        [string[]]$PublisherName,

        [Parameter(Mandatory=$false)]
        [ValidateSet('Languages','Snippets','Linters','Debuggers','Other','Themes','Productivity')]
        [SupportsWildcards()]
        [string[]]$Category,

        [Parameter(Mandatory=$false)]
        [string[]]$Tag,

        [Parameter(Mandatory=$false)]
        [ValidateSet('Languages','Snippets','Linters','Debuggers','Other','Themes','Productivity')]
        [SupportsWildcards()]
        [string[]]$Test
    )

BeforeMarkdown.md

-ExtensionName

The Extensions Name. Accepts WildCards.

Type: String[]
Parameter Sets: ExtensionName
Aliases: 

Required: True
Position: Named
Default value: 
Accept pipeline input: False
Accept wildcard characters: True

-Category

Filter Extensions by Categories. Valid categoies are 'Languages', 'Snippets', 'Linters', 'Debuggers', 'Other', 'Themes' and 'Productivity'

Type: String[]
Parameter Sets: (All)
Aliases: 

Required: False
Position: Named
Default value: 
Accept pipeline input: False
Accept wildcard characters: False

-Test

{{Fill Test Description}}

Type: String[]
Parameter Sets: (All)
Aliases: 

Required: False
Position: Named
Default value: 
Accept pipeline input: False
Accept wildcard characters: False

BeforeParams.ps1

[CmdletBinding(DefaultParameterSetName="ExtensionName")]
    [OutputType([PSCustomObject])]
    param
    (
        [Parameter(ParameterSetName="ExtensionName",Mandatory=$true,ValueFromPipelineByPropertyName=$false,Position=0)]
        [SupportsWildcards()]
        [PSDefaultValue(Help='*')]
        [string[]]$ExtensionName = '*',

        [Parameter(ParameterSetName="DisplayName",Mandatory=$true,ValueFromPipelineByPropertyName=$true,Position=0)]
        [string[]]$DisplayName,

        [Parameter(Mandatory=$false,ValueFromPipelineByPropertyName=$true,Position=1)]
        [string[]]$PublisherName,

        [Parameter(Mandatory=$false)]
        [ValidateSet('Languages','Snippets','Linters','Debuggers','Other','Themes','Productivity')]
        [SupportsWildcards()]
        [string[]]$Category,

        [Parameter(Mandatory=$false)]
        [string[]]$Tag
    )

Issue.md

Before Params

I added the following changes but the help doesn't see them as changes. Ran update 10 or so times.

• $Category
  • [SupportsWildcards()]
• $ExtensionName
  • [SupportsWildcards()]
  • [PSDefaultValue(Help='*')]
  • ValueFromPipelineByPropertyName=$false (Value was True)

After Params

I then added a new Param named Test. This acutally registered a change and the next update added the new parameter, but it ignored all changes except the ValueFromPipelineByPropertyName=$false

• $Test
  • [Parameter(Mandatory=$false)]
  • [ValidateSet('Languages','Snippets','Linters','Debuggers','Other','Themes','Productivity')]
  • [SupportsWildcards()]