Yes, sorry, I should have been more detailed about this - it is in a prompt 
theme file, called prompt_foo_setup, and the file lies in a directory added 
to $fpath. I load the prompt with 'prompt foo', and when the function is 
named prompt_foo_precmd, it isn't executed, but it is otherwise.

Peter wrote:
> On Wed, 14 Jan 2009 21:24:10 +0100
>
> tek <tek@moonitor.org> wrote:
> > I noticed that prompt_THEME_precmd(in a prompt theme) isn't executed
> > anymore if added to precmd_functions in 4.3.9, while it was in 4.3.6. As
> > I didn't find anything in the ChangeLog, I thought maybe someone forgot
> > to mention that.
>
> It can't be quite that simple.
>
> % prompt_THEME_precmd() { print Executing function; }
> % precmd_functions=(prompt_THEME_precmd)
> Executing function
>
> Do you mean something different?  For example, do you mean "doesn't get
> automatically added to precmd_functions"?  That also seems to be working
> for me.
>
> Can you reproduce this starting from "zsh -f"?