git svn should refuse to checkin .svn directories

As you might guess I just annoyed my collegues by (temporarily) destroying our svn repo. Nobody could checkout anymore, because I accidently checked in a .svn directory with git svn.

I'm lucky that I'm still allowed to use git svn to work on our svn repo...

Maybe you could add a warning or something else to avoid .svn directories to be ever checked in via git svn.

I'm sure that there is also a config option somewhere to get .svn directories ignored (also subdirs when adding the parent dir?). But this check should really be a default setting to avoid other newcommers to get into trouble because they gave git svn a try.

Cheers,