On Wednesday 26 September 2007, Sean Dague wrote:
> On Wed, Sep 26, 2007 at 03:15:51PM -0400, Garrison Hoffman wrote:
> > I filter my mail based on List-Id, is there a reason it keeps changing
> > for this list? Can I at least (based on the three versions I've seen) be
> > reasonably certain that /List-Id: .* <mhvlug\.mhvlug\.org>/ will
> > match?
Yeah I ran into this too. I filter on the List-Id header instead of
Subject so that I wouldn't mistake when someone sent me a private reply vs a
reply to the list.
On Wednesday 26 September 2007, Jay Gagnon wrote:
> On 9/26/07, Garrison Hoffman <[EMAIL PROTECTED]> wrote:
> > Sean Dague wrote:
> > > Yep, match on List-Id:.*mhvlug.mhvlug.org
> >
> > I'm not certain if regex specificity is an occupational hazard or a
> > personality disorder; I guess I'll live with the greedy match.
>
> I've worked with regular expressions just enough to not understand
> something here. You say you'll live with the greedy match, which implies
> you want to be able to do better, but that looks like a pretty simple regex
> to me, so I'm not sure what about it isn't up to snuff.
*mhvlug.mhvlug.org vs *mhvlug\.mhvlug\.org was the only thing I noticed.
Realistically either will work, although the latter is a little more
specific. ["." itself is a wildcard which matches any one character, "\."
means only "." will match since the backslash was used to escape the "."
being taken for a wildcard.]
> Also, it was my understanding that "greedy" when applied to regular
> expressions meant it matched as much of the string as possible, as
> opposed to as little. What about the given regex forces it to be greedy?
I think "greedy" means what it implies -- that a greedy match results in
more matches [rather than fewer more specific matches]. The most specific
reference I can easily find on it at the moment:
"The "*", "+", and "?" qualifiers are all greedy; they match
as much text as possible."
http://docs.python.org/lib/re-syntax.html
-- Chris
--
Chris Knadle
[EMAIL PROTECTED]
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