On Tue, 2009-02-24 at 14:54 +0100, Nicolas Haller wrote:
I have a problem. I have a rule like this
header GM_BLAH X-BLAH ~= /^blah$/
If I receive a mail with one header X-BLAH, all is right, the rule
match.
But, If a receive a mail with two header lines X-BLAH, the rule don't
match.
No real rule, no sample that should be hit. Well, guess I see your
problem anyway... ;)
Please do provide useful, stripped-down and carefully crafted examples,
please. The operator is =~ rather than ~=. See my point?
So, is it normal? What can I do for my rule matching mail with duplicate
header lines?
IIRC the values of headers occuring multiple times are stored in a
single string. Including the newline char.
With your RE modifiers (or the lack thereof), ^ and $ only match the
beginning and end respectively of the string. Notably, they don't match
an embedded newline, as they do with the /m modifier. Also, the '.' does
not match a newline either, unless you specify the /s modifier. See the
perlre documentation for details:
http://perldoc.perl.org/perlre.html#Modifiers
Point in case: /^.*$/ can not match here, while /^.*$/ms does.
If you need the anchoring to match a single header only (either one),
add /m. If you want '.' to span multiple headers, add /s. You can use
both, if desired.
guenther
Example, using a quickly forged mail ;) an ad-hoc rule and the relevant
debug output.
$ echo -e Foo: A\nFoo: B\n\n |
spamassassin --cf=header FOO Foo =~ /^.*$/ms -D
[5674] dbg: rules: ran header rule FOO == got hit: A
[5674] dbg: rules: B
[5674] dbg: rules:
--
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;il;i++){ i%8? c=1:
(c=*++x); c128 (s+=h); if (!(h=1)||!t[s+h]){ putchar(t[s]);h=m;s=0; }}}
