Script started on Sun Mar  1 16:12:03 2009
snow# pwd

/usr/ports/x11-drivers/xf86-video-nv
snow# ls -l

total 10
-rw-r--r--  1 root  wheel  459 Mar  1 12:22 Makefile
-rw-r--r--  1 root  wheel  256 Sep  5 08:39 distinfo
drwxr-xr-x  2 root  wheel  512 Mar  1 15:06 files
-rw-r--r--  1 root  wheel   89 May 19  2007 pkg-descr
-rw-r--r--  1 root  wheel  151 Jul 19  2007 pkg-plist
snow# patch < ~joji/patch-xf86-video-nv	

Hmm...  Looks like a unified diff to me...
The text leading up to this was:
--------------------------
|Index: Makefile
|===================================================================
|RCS file: /home/ncvs/ports/x11-drivers/xf86-video-nv/Makefile,v
|retrieving revision 1.14
|diff -u -r1.14 Makefile
|--- Makefile	24 Jan 2009 22:06:27 -0000	1.14
|+++ Makefile	1 Mar 2009 02:33:23 -0000
--------------------------
Patching file Makefile using Plan A...
Reversed (or previously applied) patch detected!  Assume -R? [y] ^Csnow# 

snow# exit

exit

Script done on Sun Mar  1 16:12:28 2009