> Using a brand new download of the Emacs master repository and a fresh copy of the patch, I ran:
 >
 > git apply frame.c.diff
 >
 >    error: patch failed: src/frame.c:537
 >    error: src/frame.c: patch does not apply

My apologies.  I've sent you a completely unrelated old patch while the
new one happened to end up in the wrong directory.  The present one
should be OK.

martin