How can I pass batch arguments with dots into a powershell script?

Question

I have a batch script that will be run by an an external process that is not under my control. The external process can supply a variable amount of arguments to the batch script. I then want to pass these variables to a powershell script. The problem is, is that some of these variables look like:

-Dfoo.bar=baz

Powershell for some reason breaks it up into two args. On the command line, I can just add quotes around the arg and call it a day. But how would I get batch to pass it that way? Here is my script:

@echo off
SET CMD=C:\Scripts\foo.ps1

PowerShell.Exe -Command "%CMD%" %*

I noticed this question is very similar to this one. Here he's escaping the $ character. I tried doing something similar for the dot and/or the dash char, but have no luck. Anyone has any ideas?

Answer 1

If you call your script from CMD, it works just fine as-is:

C:\>.\foo.bat -Dfoo.bar=baz
args are -Dfoo.bar=baz

To fix the issue when you run the batch script from PowerShell use the stop parsing operator --% e.g.:

C:\ PS> .\foo.bat --% -Dfoo.bar=baz
args are -Dfoo.bar=baz