So I have to update my wix installer today and I need to remove files that I have deleted from my project. Subversion + Powershell makes this easy
svn log -r 4606:HEAD -v | where {$_ -match "^ D"}
4606 was revision of the last time I updated the installer, so I ask subversion for all changes since then.
-v tells it to print each path
My where { } checks each line of the output to see if it starts with 3 spaces and a D