Exit code from powershell script when terminating from subfunction - function

Question

I have a Powershell script running which calls a function from a dot-sourced .ps1 file.
Inside this function I do an exit 1 which terminates the whole script (as intended).
When I now look at $? and $LASTEXITCODE it says True and 0.
Shouldn't there be False and 1?
Is there anything I don't see?
Example:
main script:
Log-Error -Error "some error" -exit $True
in function.ps1:
Function Log-Finish {
[CmdletBinding()]
Param ([Parameter(Mandatory=$false)][boolean]$Exit)
Process {
" error "
# If $Exit is $true, end calling script
If(($Exit) -or ($Exit -eq $True)) {
Exit 1
}
}
}

Answer 1

You will found an explanation to your "issue" in this post http://blogs.technet.com/b/heyscriptingguy/archive/2011/05/12/powershell-error-handling-and-why-you-should-care.aspx
Also, remember that when external command or script is run, $? will
not always tell you a true story. Let’s see why. Create a script that
has nothing but one line—our favorite error generating command:
Get-Item afilethatdoesntexist.txt
Now run the script and see the output. You will notice that the host
shows you the error. You will also notice that $error contains the
error object that was generated by the command in the script. But $?
Is set to TRUE! Oh, and don’t try this in the order I mentioned
because it will skew the results of $?.
So can you tell me why $? Is set to True? Because your script ran
successfully as far as Windows PowerShell is concerned. Every step in
script was executed—whether it resulted in an error or not. And that
was successful in doing what the script told Windows PowerShell to do.
It doesn’t necessarily mean that the commands within script didn’t
generate any error. See how quickly it gets confusing? And we haven’t
started to go deep yet!