[rancid] plus in the prompt?

[Ed Ravin]

I'm trying to get the "X&Y Corporation" router into RANCID.  Here's
what a clogin attempt to run a command looks like:

[...]
User Access Verification

Username: cisco
Password: 

x+y>enable
Password: 
x+y#
x+y#term length 0
x+y#
Error: TIMEOUT reached

Looks like it's the plus sign in the prompt.  If I change it to "XandY"
instead of "x+y" clogin works as expected.

Why does it work for the enable and the "term length 0" command, but not
afterwards?