> -----Original Message----- > For the most part you can match any character by the appearance of the > character. Any character with special meaning needs to be escaped in some > way. The easiest way is usually with a backslash, but in some cases you > can > also do it by making it a member of a character class. > > So for you questionmark case, you could do \? or [?], as most of the > special > characters lose their meaning in a character class. The exceptions are > obviously right bracket, backslash, and dash becomes special if it isn't > the > first character. > > > /\=\?koi8\-r\?/
This is what I'd setup originally, except when I ran it past a RE interpreter the results were just.. wrong. I do think it would work, however, and will be testing it on a Virtual Machine today to be sure. > This should work. You don't need to escape the dash, and I'm pretty sure > you don't need to escape the equal sign; just the questionmark. > > Also, you may want to handle this in both uppercase and lowercase, so you > could do > > /=\?koi8-r\?/i > > And you probably don't need the = sign to get reasonably reliable > matching. Ah, this is the bit I was unsure about, limiting how many characters are escaped. I would tend towards the fully escaped one myself, I just wouldn't trust non-escaped = and ? signs. But that's probably got to do with some bad history with Spamassassin:) Thanks for reinforcing some points with RE that needed to be (: Cheers, Mike
