$ svn log --verbose | grep doc . . . -- r6 | usertwo | 2007-02-05 09:22:27 +0200 (Mon, 05 Feb 2007) | 1 line Changed paths: D /helloworld/trunk/doc . . .
The directory in question is deleted in revision 7. We can restore it in the following way:
$ svn copy -r7 https://localhost/svn/repo1/helloworld/trunk/doc doc Checked out revision 7. A doc $ svn status A + doc
And we finish the restore by commiting the directory