Le 07/03/2011 11:47, Stan Hoeppner a écrit : > mouss put forth on 3/6/2011 7:03 PM: > >> /^.*foo/ >> means "it starts with something followed by foo". and this is the same >> thing as "it contains foo", which is represented by >> /foo/ > > I was taught to always start my expressions with "/^" and end them with > "$/". Why did Steven teach me to do this if it's not necessary? Steven > being the author of the Enemies List: http://enemieslist.com/ which > contains over 65,000 regexes matching FQrDNS patterns. >
You misunderstood what Steven meant. what Stevens meant is to avoid things like /adsl/ REJECT blah so he recommends anchoring expressions, right and left: /^cpe\..*\.joe\.example$/ ... contrast this with /^cpe/ ... and /adsl/ ... which could match a lot of places you wouldn't want to match. /^.*foo/ means: starts with anything followed by "foo". this is the same as "contains foo", which can be represented by /foo/ and /foo.*$/ means contains "foo" followed by anything. this is the same as "contains foo", which can be represented by /foo/ of course, I appreciate Steven and I agree with what he says here, to some extent (obviously, I'm paid by my employer so it's easy for me to push for freely available stuff). >> [snip]
