>This is a very straightforward document. Thanks, Len. But now I have some >questions. According to that document, the ^ character is illegal except >immediately after a left bracket. However, most of the Imgate and Postfix >regexp files have lines that begin with "/^".
becaus they are hunting patterns anchored to BOL >Now I see in man regex 3 that perhaps ^ and $ are beginning and ending >anchors. (It's vague, but it seems to make sense.) begin, end. vague? :) >What I do not see anywhere is why there are / characters surrounding the >regexp's. these are the expression delimiters (begin/end expression), . / is customary but if you have a lot of / inside the expression, rather than escape them all, use a different delimiter. > Is this part of the regexp standard or simply how Postfix >identifies the start and end of each regexp? postfix uses posix or pcre syntax. postfix itself doesn't have any own regex syntax, basically. Len
