--allow-mixed-revisions, but the code shouldn't care about the revision of the external for the purposes of this check.
Can you provide a reproduction recipe, starting from an empty repository? In a quick test I couldn't trigger the error you describe. http://subversion.apache.org/docs/community-guide/issues#reporting-bugs Thanks Daniel Joel Low wrote on Sat, Feb 25, 2012 at 11:38:12 +0800: > Hello, > > I'm trying to do a remote-URL/remote-URL merge (for vendor drops) into my > working copy which contains externals (for the binaries). When both are > updated to HEAD and I try to do the merge, I get this error message. I've > tried using --force, but that seems to work once, but subsequently the merge > will still fail with the same error. I've resorted to explicitly updating my > external to the same revision as the rest of the WC before merge proceeds. > > Is there a cleaner way around this or am I doing something wrong? > > Regards, > Joel >