Short – but unfortunatly to long for Twitter. With this little snippet you can get all commits from an svn working copy, repository or from a pure log:

svn log | ruby -e "puts STDIN.read.split(/\n/).select{|l| l =~ /^r\d+/}.map{|l| l.split('|')[1].strip}.uniq.sort"

Who has any guess why I did need this?