2012/12/30 Helmut Jarausch <jarau...@skynet.be>: > Hi, > > is there a means to specify that 'ignore-case' should only apply to a part > of a regex? > > E.g. > > the regex should match Msg-id:, Msg-Id, ... but not msg-id: and so on. > > I've tried the pattern > r'^Msg-(?:(?i)id):' > but (?i) makes the whole pattern ignoring case. > > In my simple case I could say > r'Msg-[Ii][Dd]:' > but that's a bit clumsy. > > Is there a more elegant way? Is there a way to compose a pattern > from subpatterns which are compiled with different flags? > > Many thanks for a hint, > Helmut. > -- > http://mail.python.org/mailman/listinfo/python-list
Hi, you may check the new regex implementation for python http://pypi.python.org/pypi/regex which allows (among many other improvements) for scoped flags: >>> import regex >>> regex.findall(r"Msg-(?i:id):", "the regex should match Msg-id:, Msg-Id:, >>> ... but not msg-id:, MSG-ID: and so on") ['Msg-id:', 'Msg-Id:'] >>> hth, vbr -- http://mail.python.org/mailman/listinfo/python-list