Currently the IDE uses the URI syntax
to load historical file contents for the purpose of displaying diffs. This generally works but is not guaranteed to do
so, according to
because SVNSpecialURI could be changed.
For SVN 1.6 servers (see release notes in URL), could use
Not clear how to decide which style to use - is there some quick way to check whether a server is 1.6+? mod_svn does not
seem to send a version header.