I wrote:
> But if /usr/local/bin/bogo-doit reads
>
> !#/bin/sh
>
> bogofilter -p -e -u -l -O /tmp/looka
>
> the bad bogofilter dumps core
>
That's because this year's bogofilter seems to require the form
bogofilter -p -e -u -l -O /tmp/looka -d PATH_TO_.BOGOFILTER_DIRECTORY
Fixed!