But $highlight uses the syntax $highlight(N/text). Now, if text == N? That is: if someone sends the message "1"?
A way around that is $highlight($1- $+ $lf). A line feed cannot be part of an IRC message or entered in Highlight, so it's a safe choice of padding, although not very pretty.

/.timerQ 1 0 echo /.timerQ 1 0 $timer(Q).com