So I wrote myself a tool to go through all commit comments, and verify that no "CRs" appear in the svn:log entry. If I find them, I rewrite the log entry. That way, I can clean up existing repositories.
However, I ran into a surprise. CR characters have also snuck into the svn:ignore property, which is *not* a revprop, and cannot be fixed by any of the tools available. I've seen that other people recommend editing the dump file directly, but that makes me quite nervous, especially on an 8MB dump file. Hoping there's a better way. Eric.
