external merge tools for conflicts only

Is there any way to get svn to use an external merge tool, but only for
conflicts?

In other words, if I set up an external merge tool like diffuse
(http://diffuse.sourceforge.net/), when svn finds a conflict it just
throws both repository and working copy files at the external merge
tool. In that tool, you'll see every difference, not just the
conflicts. What I'd like is to have svn merge everything it can,
and then call the external merge tool. The only differences shown in
that tool will be the conflicting sections. Sort of an external
version of the 'dc' command.

Or is there some other way to do this? I'm using svn 1.7.8.
Received on 2013-01-12 21:24:12 CET