scoring

[Brian May <bmay@csse.monash.edu.au>]

Hello again,

according to the info documentation:

"Multiple crossposts"
     If you want to lower the score of articles that have been
     crossposted to more than, say, 3 groups:
          ("xref" ("[^:\n]+:[0-9]+ +[^:\n]+:[0-9]+ +[^:\n]+:[0-9]+" -1000 nil r))


However, this doesn't work, instead I have to use:

          ("xref" ("[^:]+:[0-9]+ +[^:]+:[0-9]+ +[^:]+:[0-9]+" -1000 nil r))

Which really puzzles me, as PGnus doesn't display any newlines
within the Xref line. Is that notation a legal R.E.? Or perhaps
PGnus removes newlines within the Xref line before displaying it?
How can I confirm/deny this? "C-u g" shows the Xref line, as expected,
without any newline characters.

(My guess is that the example is wrong, and PGnus interprets "\"
and "n" as two distinct characters, within [ and ] --- am I correct?
Perhaps this is a bug somewhere on my system.)


Another thing, while scoring based on the "Message-Id" works, scoring
based on "thread" doesn't work (nothing matches). This has me rather
puzzled, because I thought matching on thread is the same thing as
matching on the "Message-Id", but with followups included, too.
-- 
Brian May <bmay@csse.monash.edu.au>