In SA 2.63, header matching is always "decoded strings". If you want to match undecoded header string, you have to use "full" matching. And, "full" matching can't use regular expression '^' (string start) and '$' (string end). So:
full WIN1251SUBJECT /[\r\n]Subject: =\?Windows-1251\?B\?/ score WIN1251SUBJECT 8.000 --
yoh - Would you be willing to spend a moment and explain "decoded strings" and "unencoded header string" or point me to somewhere that explains it so that I may learn.
I tested this and it does work in 2.63: header WIN1251SUBJECT Subject =~ /Windows-1251/ score WIN1251SUBJECT 8.000
I'm not sure if you were saying it would not work or if you had a more proper way to do it.
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