On July 21, 1999 at 12:13, John Stumbles wrote:
> > I've thought about it. I have been considering what the best approach
> > will be. Maybe something like:
> >
> > <MsgExcludeFilter>
> > /^Subject: DON'T DELETE THIS MESSAGE -- FOLDER INTERNAL DATA/m;
> > </MsgExcludeFilter>
NOTE: I have decided to call it MSGEXCFILTER.
> I like this: you could do other useful things such as:
>
> /^Subject: .*(money fast|XXX sex|business opportunity|your web site|test
> message|unsubscribe)/im
>
> (Couldn't excluding messages with the X-no-archive header set have
> been done this way too?)
Yes, and I give an example in the documentation (btw, I have already
implemented MSGEXCFILTER in my dev tree). However, the CHECKNOARCHIVE
resource may be useful to users who do not know Perl.
> What might be useful would be a way of ANDing and ORing
> expressions to match on e.g.
>
> <MsgExcludeFilter>
> <!-- implicit OR: exclude if any of following rules matches -->
> <FilterRule>
> /^Subject: DON'T DELETE THIS MESSAGE -- FOLDER INTERNAL DATA/m;
> </FilterRule>
[snip]
> <!-- implicit AND: this rule matches if both of following
> regexps match -->
> /^From: \w+\@(aol|hotmail)\.com/im
> /^Subject: .*(money|opportunity|your web)/im
> </FilterRule>
> </MsgExcludeFilter>
Oh, the horrors. Just use Perl:
<MsgExcFilter>
/^Subject: DON'T DELETE THIS MESSAGE -- FOLDER INTERNAL DATA/m ||
/^Subject: unsubscribe/im ||
/^Subject: test message/im ||
(/^From: \w+\@(aol|hotmail)\.com/im &&
/^Subject: .*(money|opportunity|your web)/im);
</MsgExcFilter>
Basically, you have all of Perl to do what you want. You can declare
variables, use loops, require modules, etc. Internally, MHonArc wraps
your code into a function and puts the body of the function (that the
user defines via MsgExcFilter) into a separate package to avoid
conflicts with MHonArc internals. $_ is set to a copy of the message
header, so you can actually modify the $_ in your calculations w/o
affecting the original header.
--ewh
