Get-ChildItem with -File and -Exclude parameters causes all files to always be excluded #16695

ReneRebsdorf · 2022-01-04T13:51:52Z

Prerequisites

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Make sure you are able to repro it on the latest released version
Search the existing issues.
Refer to the FAQ.
Refer to Differences between Windows PowerShell 5.1 and PowerShell.

Steps to reproduce

When using the Get-ChildItem cmdlet, I would expect -File to filter for only files, and when using -Exclude, these files should be possible to further filter. Instead when using the -File and the -Exclude parameters, no files are returned.

The problem is only reproducable with the -File parameter, not the -Directory parameter.

Expected behavior

Given a folder with files "a" and "b", and a folder "subfolder":

If using `Get-ChildItem -File`: Both files should be returned, and the subFolder should not be returned.
If using `Get-ChildItem -Exclude "a"`: File "b" and folder "subFolder" should be returned
If using `Get-ChildItem -File -Exclude "a"`: Only file "b" should be returned

Actual behavior

Given a folder with files "a" and "b", and a folder "subfolder":

If using `Get-ChildItem -File`: Both files are returned, the subFolder should not be returned.
If using `Get-ChildItem -Exclude "a"`: File "b" and folder "subFolder" should be returned

However:
If using `Get-ChildItem -File -Exclude "a"`: No files nor folders are returned.

Error details

No errors are returned

Environment data

Name                           Value
----                           -----
PSVersion                      7.2.1
PSEdition                      Core
GitCommitId                    7.2.1
OS                             Microsoft Windows 10.0.22000
Platform                       Win32NT
PSCompatibleVersions           {1.0, 2.0, 3.0, 4.0…}
PSRemotingProtocolVersion      2.3
SerializationVersion           1.1.0.1
WSManStackVersion              3.0

Visuals

No response

ReneRebsdorf · 2022-01-04T13:54:56Z

Further testing shows that if using the -Recurse parameter the expected behavior is seen.

iSazonov · 2022-01-04T19:11:08Z

Add Area-FileSystem-Provider to consider for FileSystem Provider V2.

iSazonov · 2022-01-04T19:15:55Z

For reference #13524

MichaelZ4714 · 2022-05-19T12:35:50Z

The bug is still present in PowerShell 7.2.4 on Windows 11.
The correct result is not only returned when adding -Recurse but also when having the wildcard * in the path:
Get-ChildItem * -File -Exclude "a"
But this cant be used for mitigation in all algorithms. As a general solution one has to omit -File and pipe the resulting object to
Where-Object { -not $_.PSIsContainer}
back to pre-3.0 :-(

ReneRebsdorf added the Needs-Triage The issue is new and needs to be triaged by a work group. label Jan 4, 2022

daxian-dbw added Area-FileSystem-Provider specific to the FileSystem provider WG-Engine-Providers built-in PowerShell providers such as FileSystem, Certificates, Registry, etc. and removed Area-FileSystem-Provider specific to the FileSystem provider labels Jan 4, 2022

iSazonov added the Area-FileSystem-Provider specific to the FileSystem provider label Jan 4, 2022

Aug	SEP	Oct
	14
2021	2022	2023

Get-ChildItem with -File and -Exclude parameters causes all files to always be excluded #16695

Get-ChildItem with -File and -Exclude parameters causes all files to always be excluded #16695

ReneRebsdorf commented Jan 4, 2022

ReneRebsdorf commented Jan 4, 2022

iSazonov commented Jan 4, 2022

iSazonov commented Jan 4, 2022

MichaelZ4714 commented May 19, 2022

Get-ChildItem with -File and -Exclude parameters causes all files to always be excluded #16695

Get-ChildItem with -File and -Exclude parameters causes all files to always be excluded #16695

Comments

ReneRebsdorf commented Jan 4, 2022

Prerequisites

Steps to reproduce

Expected behavior

Actual behavior

Error details

Environment data

Visuals

ReneRebsdorf commented Jan 4, 2022

iSazonov commented Jan 4, 2022

iSazonov commented Jan 4, 2022

MichaelZ4714 commented May 19, 2022