question about quoting % in preexec

[Andy Spiegl <zsh.Andy@xxxxxxxxx>]

I am using the following preexec-function to display the currently running
process in my xterm-title:

      preexec () {
        print -Pn "\033]0;%n@%m <${(Vq)2}> %~\007"
        print -Pn $icontitle
      }

But if I run a command with "%" in the arguments, e.g.:
 date "+%Y-%m-%d %H:%M:%S"

it leads to very unwanted results because zsh interprets it as variables.
How can I avoid this?  I suppose I have to quote the %s but how?

Thanks so much for your help,
 Andy.

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