howto avoid ~irc in %~ ?

[Andy Spiegl <zsh.Andy@xxxxxxxxx>]

Hi,

I am afraid there is no good solution to this, but better ask:

I use %~ in my prompt, which is great, but in my /etc/passwd are some
strange home directories, like:
 irc:x:39:39:ircd:/var:/bin/sh

So when I change to
 /var/www
my prompt is:
 machine:~irc/www>

Is there any way to tell zsh, to only use the ~... shortcut for home
directories in /home, or maybe for some specific users?

Thanks,
 Andy.

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