Error saving session containing "\"

I have tried to save session with this name: xxx\yyy@ipaddress
but there is error: "invalid name 'xxx\yyy@ipaddress'. Name cannot contain '\[]'.
It is not big issue, but my user name for that session is in this format, so it will be nice if I could save the session with correct user name.
10'x.

Thanks for your post. This issue has been added to tracker.