multi-wc-format/BRANCH-README mentioned this: > [*] New externals working copies must inherit the format from their > parent working copy, because mixed-format working copies are a) a > Bad Thing, and b) defeat the purpose of this feature, which is > support for multiple versions of the client in the same working > copy.
Upgrading a parent working copy upgrades external wc's too. However, upgrading an external succeeds. Judging by the quoted remark, should «svn upgrade --compatible-version=$N /path/to/external» error out unless the external's parent working copy is already at version $V? Cheers, Daniel
