The variable $L_TMP_ID_FILE needs to be surrounded by quotes in order to survive paths containing whitespace. Fixed upstream: http://git.hands.com/?p=ssh-copy-id.git;a=commit;h=b71027802eecebc6c2183f359ee732513ab100a6
Also https://anongit.mindrot.org/openssh.git/commit/?id=8ff20ec95f4377021ed5e9b2331320f5c5a34cea
Close all resolved bugs after 7.3p1 release