diff-cmd with binary files

I'm trying to use an external diff command (gnu diff) when showing the diff between
two binary files. The command I run:
svn diff --diff-cmd /usr/bin/diff -r 878:879 logout.gif
Results in this error:
Binary files logout.gif (revision 878) and logout.gif (revision 879)
differ
svn: Error calling external program
svn: '/usr/bin/diff' returned 2

If I leave out the svn diff-cmd option I get:
Cannot display: file marked as a binary type.
svn:mime-type = application/octet-stream

Is this user error or a bug in svn/diff?

Using svn 0.32 and diff 1.8.2

Thanks,
-Jason

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Received on Tue Nov 18 20:47:08 2003