I just imported the sample Sort rule from:
http://www.scootersoftware.com/downl...c=kb_morerules
and it works like a champ. Now, here is a sample of the type of thing I'm trying to compare and how I'd like it to be compared. Can it be done, say, with regular expression in BC2?

php5-5.1.2-27
php5-bz2-5.1.2-27
php5-calendar-5.1.2-27

compared to:
php5-5.1.2-29.54
php5-bz2-5.1.2-29.54

should be interpreted as:

php5
php5-bz2
php5-calendar

php5
php5-bz2

Then, when I show "differences only", I will clearly see which packages (without regard to version info) are not installed on which server.

The regular expression for the above stripping of version might be something like:
(.+)-[0-9].+
If this is possible, then an alternative enhancement or add'l rule might be to compare version and ignore subversions:
(.+-[0-9]+)\.[0-9].+

Can it be done? How?