Re: Check Client Version in hook

Just be aware that these hooks disallow all commits, not just commits of
merges, where the svnbook advice applies. There's not much better you
can do, because it's impossible to tell from an "old" transaction if it
contains a merge or only genuine, original changes.

If you'd still like to allow old clients to commit particular kinds of
changes (like tagging), or in particular branches, it's not that easy.

-- 
Stein