Unable to diff dot-files in Mac's FileMerge

Question

I have set my FileMerge not to ignore any file. However, it ignores my dotFiles.

How can you make FileMerge to diff dotFiles?

Answer 1

Since the leading dot is merely a conventional hint to the OS that the file is hidden (inherited from UNIX) I would imagine that removing the leading dot from the filename would allow the utility to see and diff the files.

Answer 2

You need to use opendiff -Mac's builtIn command to launch dotFiles in FileMerge. You can find a solution at the thread.