I'll try, but how do I do this? Is there some svn command for
reverting to a specific version?
i'm not aware of any direct revert command of svn.
however you can checkout particular revision of the svn tree
(i.e. the 18265 revision).
svn up -r VERSION
In order to revert a specific changeset, you can do something like this:
say you want to revert changeset 12345:
svn diff -r 12345:12344 > /tmp/undo-12345.diff
patch -p0 < /tmp/undo-12345.diff
That will apply the "reverse difference" between 12344 and 12345 to the
current tree.
Actually, I now see that there's a way to do this all at once. See
http://svnbook.red-bean.com/nightly/en/svn.branchmerge.commonuses.html#svn.branchmerge.commonuses.undo
(in general, the svnbook is a great resource --- and the definitive one,
I believe --- for anyone working with svn...)