See if this helps: http://top-frog.com/2009/03/30/mac-os-x-subversion-and-keychain/.
It looks like you have to let Subversion ask for your password and not provide it on the command line. Then, it should store your password in the keychain. Once your password is in the keychain, it should be pulling it out of the keychain. You can manipulate the keychain from the command line with /usr/bin/security. -- David Weintraub qazw...@gmail.com
