I've opened the files I want to diff using the following command:
C:\temp\robocopyTasks>vim -c "edit ++enc=ucs-2le" -d C:\temp\robocopyTasks\acl\tasks_temp.txt C:\temp\robocopyTasks\acl\tasks_win.txt
But the file encoding is only set on the first file that is opened, and not on the second one; is there any way to do this from the command line?