[BUG] about_PSReadline is included in WMF 5.1 for Windows 7, causes help topic conflicts
The about_PSReadline helpfile for Windows 10 is included in the WMF 5.1 distribution for Windows 7 even though PSReadline is not. It can be found alongside other system helpfiles in:
If PSReadline is subsequently installed from the PowerShell Gallery this remnant—which is identical in name, category, and associated module—will be considered a duplicate and prevent Get-Help from displaying help for the about_PSReadline topic.
My apologies from before: we did in fact intend to de-couple PSReadline from WMF. I didn’t have all the context from when we released the package (you’re doing exactly the right by installing PSReadline from the Gallery.
We actually fixed this bug in PowerShell 6.0 so that you can disambiguate on duplicate txt files, but the fix will not be finding its way back to Windows PowerShell 5.×.
You can get around the duplicate issue with the following workaround:
Get-Help about_PSReadline | Select-Object -First 1 | Get-Help
Sorry about that, and thanks for the report!