--- a/mercurial/patch.py	Mon Jun 23 13:50:44 2014 -0500
+++ b/mercurial/patch.py	Sat Jun 21 15:56:49 2014 +1000
@@ -1561,6 +1561,7 @@
         text=opts and opts.get('text'),
         git=get('git'),
         nodates=get('nodates'),
+        nobinary=get('nobinary'),
         showfunc=get('show_function', 'showfunc'),
         ignorews=get('ignore_all_space', 'ignorews'),
         ignorewsamount=get('ignore_space_change', 'ignorewsamount'),
@@ -1815,7 +1816,7 @@
         if dodiff:
             if opts.git or revs:
                 header.insert(0, diffline(join(a), join(b), revs))
-            if dodiff == 'binary':
+            if dodiff == 'binary' and not opts.nobinary:
                 text = mdiff.b85diff(to, tn)
                 if text:
                     addindexmeta(header, [gitindex(to), gitindex(tn)])