Subversion Repositories eFlore/Archives.cel-v1

Error running this command: svn --non-interactive --config-dir /tmp/websvn log --xml --quiet --limit 40 -r -1:1 'file:///home/svn/depot/eflore/archives/cel-v1/trunk/src/org/tela_botanica/client/LocationList.java@-1'
No output on STDOUT.E205000: Syntax error in revision argument '-1:1'