Finding head of peg branch...

Is there a good way of finding the head revision of a peg branch?

I have the path and a revision number somewhere on the peg branch.
Since it's a peg branch, the following command
        svn log -r 123:HEAD svn://.../a/b/c_at_123
fails because svn://.../a.b.c doesn't exist in HEAD. If it wasn't a peg
branch, then the log command would have worked.

Currently I'm doing a binary search to find the branch head which is a
bit inefficient due to the multiple 'svn log' calls. (I have to jump
through a few hoops to get SWIG installed and Perl updated, so using the
API isn't the preferred solution.)

*****

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Received on Fri Sep 29 20:01:13 2006