On Fri, 2009-10-09 at 15:34 +0100, Steve Freegard wrote:
> Marc Perkel wrote:
> > > It's essentially Perl logical expression syntax, and basic math
> > > expression syntax if you want to count:
> > >
> > > meta NAME rule1 && (rule2a + rule2b + rule2c + rule2d > 2)
> >
> > When adding rules is it a count of the number of rules or the rule scores?
It is never the score.
> It's the number of times the rule hit (e.g. 0 or 1 for regular rules; 0
> or more for rules with 'tflags multiple').
Also, meta and eval (sub-)rules may evaluate to non-Boolean values. Both
however, generally are actually Boolean.
The value of an eval rule is that returned by its function. The value of
a meta rule is that of its arithmetic expression.
meta BOOL ONE_A + ONE_B > 1
meta ARITH ONE_A + ONE_B
BOOL will always be either 0 or 1, while ARITH might be 2, the sum of
the sub-rules. While the latter generally is *not* used by SA stock
rules, but usually strictly the former, it is something to keep in mind
when using them in metas with arithmetic expressions.
Marc, may I suggest reading the M::SA::Conf docs for the meta rule
definition documentation?
guenther
--
char *t="\10pse\0r\0dtu...@ghno\x4e\xc8\x79\xf4\xab\x51\x8a\x10\xf4\xf4\xc4";
main(){ char h,m=h=*t++,*x=t+2*h,c,i,l=*x,s=0; for (i=0;i<l;i++){ i%8? c<<=1:
(c=*++x); c&128 && (s+=h); if (!(h>>=1)||!t[s+h]){ putchar(t[s]);h=m;s=0; }}}
