Bogofilter FAQ corrections (Asian spam)

[Boris 'pi' Piwinger]

David Relson wrote:

>>* 1^0 $ ^Subject:.*=\?($UNREADABLE)
>>* 1^0 $ ^Content-Type:.*charset=.*($UNREADABLE)

charset= should be followed by "? -- anyhow here is my
version (more secure) of UNREADABLE:
UNREADABLE='[^?"]*big5|iso-2022-jp|ISO-2022-KR|euc-kr|gb2312|ks_c_5601-1987|windows-1251|windows-1256'

Note: I have actually found charset of the form '[^?"]*big5'
when I created that rule which previously had '.*big5'.

Theoretically, that will do it. I had some very similar
recipe as above which did not work. I don't know why and
gonna test the above version.

pi