Gary Funck wrote:
> > The line to search for reads:
> >
> > HEADER = `$FORMAIL -X ""` # The space after the X is vital.
> >
> > http://pm-doc.sourceforge.net/pm-tips-body.html
> >
>
> Thanks for the pointer. I think the situation discused in that example
> is different than your usage. The space is required because formail needs
> to see the explicit empty argument in order to know that it should return
> all the headers.
Ok. I generalized that to specific tags as well. I did get an error
before adding the space though... mmm...
My bad. Tested it again, and no problem.
> I've always used this form with no problems:
>
> FROM=`formail -rzxTo:`
> REALLY_FROM=`formail -rtzxTo:`
>
> > > The only refinement that I'd add to the recipe above is to quote
> > > $HEADERTAGVAL,
> > > just in the unexpected event that the sender's address had a
> > space in it, or
> > > some such:
> > >
> > > :0
> > > * ? grep -i -x -q -F "$HEADERTAGVAL" $ADDRESSFILE
> > > {
> > > ISMAILINGLIST=yes
> > > }
> >
> > The reason being, I assume, is though it wouldn't match anyway, the
> > quotes would prevent an error.
> >
>
> Yes. Procmail does its own variable substitution above, and if it saw
> a space in the $HEADERTAGVAL it would view the resulting substitution
> as two separate arguments. We don't expect spaces in the address, but it
> won't hurt to bullet proof things a bit. While we're add it, we should add
> a -e
> switch as well (e-mail addresses can begin with a '-'). We can also squeeze
> a few cpu cycles out if we don't make procmail/exec look up 'grep' on the
> path.
>
> GREP=/bin/grep
Every little bit helps.
> :0
> * ? $GREP -ixqFe "$HEADERTAGVAL" $ADDRESSFILE
> {
> ISMAILINGLIST=yes
> }
>
> FYI, RFC2822 (sec. 3.4) details the syntax of an e-mail address,
> http://www.faqs.org/rfcs/rfc2822.html
>
> This page will tell you whether a given address is syntactically valid:
>
> http://www.breakingpar.com/bkp/home.nsf/Doc?OpenNavigator&U=87256B280015193F
> 87256C40004CC8C6
> (short URL: http://tinyurl.com/3d98f)
Thanks.
Bryan
>
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