Powershell: Split-Path cannot resolve parameter set when using -LiteralPath and -Leaf

[jantari]

Steps to reproduce

Split-Path -LiteralPath $PSHOME -Leaf

Expected behavior

The cmdlet should return the name of the filesystem element furthest down the directory tree (the leaf).

Actual behavior

Split-Path : Parameter set cannot be resolved using the specified named parameters. One or more parameters issued cannot be used together or an insufficient number of parameters were provided.
At line:1 char:1
+ Split-Path -LiteralPath $PSHOME -Leaf
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo          : InvalidArgument: (:) [Split-Path], ParameterBindingException
+ FullyQualifiedErrorId : AmbiguousParameterSet,Microsoft.PowerShell.Commands.SplitPathCommand

Environment data

Name                           Value
----                           -----
PSVersion                      7.1.0-preview.5
PSEdition                      Core
GitCommitId                    7.1.0-preview.5
OS                             Microsoft Windows 10.0.19041
Platform                       Win32NT
PSCompatibleVersions           {1.0, 2.0, 3.0, 4.0…}
PSRemotingProtocolVersion      2.3
SerializationVersion           1.1.0.1
WSManStackVersion              3.0

It works with -Path "path/here/" -Leaf so I think it should work with -LiteralPath as well.

[vexx32]

Hmm, yeah, something's definitely up with those parameter sets:

PS C:\Users\joelp> gcm split-path -syn

Split-Path [-Path] <string[]> [-Parent] [-Resolve] [-Credential <pscredential>] [<CommonParameters>]

Split-Path [-Path] <string[]> [-Leaf] [-Resolve] [-Credential <pscredential>] [<CommonParameters>]

Split-Path [-Path] <string[]> [-LeafBase] [-Resolve] [-Credential <pscredential>] [<CommonParameters>]

Split-Path [-Path] <string[]> [-Extension] [-Resolve] [-Credential <pscredential>] [<CommonParameters>]

Split-Path [-Path] <string[]> [-Qualifier] [-Resolve] [-Credential <pscredential>] [<CommonParameters>]

Split-Path [-Path] <string[]> [-NoQualifier] [-Resolve] [-Credential <pscredential>] [<CommonParameters>]

Split-Path [-Path] <string[]> [-Resolve] [-IsAbsolute] [-Credential <pscredential>] [<CommonParameters>]

Split-Path -LiteralPath <string[]> [-Resolve] [-Credential <pscredential>] [<CommonParameters>]e

-LiteralPath should be listed for each set, and -Parent, -Leaf, and -LeafBase should be in both sets, but it seems there's only one set for -LiteralPath at the moment.

[scriptingstudio]

it's been by design since early days.
wondering that nobody noticed.

[vexx32]

Had a quick look, and already found something I'm very confused by -- why is IsAbsolute on Split-Path? O.o

Seems like that's way more useful on Test-Path. What on earth is going on in that cmdlet... I'd want to excise that parameter and move it to Test-Path, and then fix the parameter set issues. One thing at a time, I suppose...

[mklement0]

Good catch, @jantari, but note that your issue is a duplicate of #8751

[jantari]

You're right, I used search beforehand but it let me down. Thanks.