On 28 February 2000, Andrew Edelstein <andrew(_at_)infonent(_dot_)com> wrote:
On Sat, Feb 26, 2000 at 04:40:38AM +0200, Liviu Daia wrote:
However, they both expect a message produced by
mail daia </dev/null
to have a "Lines: 0", and one sent with
echo | mail daia
to have a "Lines: 1", while the recipe above produces "Lines: 1"
and "Lines: 2" respectively. If Procmail is counting the header
separator, this didn't use to happen before, as David pointed out.
I read this and began experimenting. Using the above two commands,
and the followin recipe, I got what you got: /dev/null produced
"Lines: 1", while echo produced "Lines: 2", and delivered to my inbox.
:0 Bf
* 1^1 ^.*$
|/usr/bin/formail -A "Lines: $="
You didn't, with your recipe I get "Lines: 2" and "Lines: 3"
respectively. As it turned out, that's because my MTA adds a trailing
newline when piping to external commands.
As for why you get 1 and 2 instead of 0 and 1, you're counting the
putative newlines --- see David Tamkin's excellent explanation earlier
in this thread.
However, with this recipe:
:0 B
* 1^1 ^.*$
{
:0f
|/usr/bin/formail -A "Lines: $="
:0
/home/andrew/testing
}
Both commands produced "Lines: 0" and delivered to my testing box.
I'm at a loss to explain why they should produce different output.
According to "man 5 procmailsc":
:MISCELLANEOUS
: You can query the final score of all the conditions on a
: recipe from the environment variable $=. This variable is
: set every time just after procmail has parsed all condi
: tions on a recipe (even if the recipe is not being exe
: cuted).
The score is re-evaluated in the inner recipes. Since you have no
rules that affect the score in the inner recipes you'll always get 0, no
matter what message you feed to Procmail.
I also noticed that if I tried
|/usr/bin/formail -A "Lines: $=" >> /home/andrew/mail/testing
I got "Lines: $=" (a literal "$=") header, instead of a count of the
number of lines. This is why I began experimenting with the latter
recipe above. Thoughts? Explanations? "Alms for a poor wretched
procmail beginner?" :)
I don't know, I suppose this one is a bug. Philip?
Regards,
Liviu Daia
--
Dr. Liviu Daia e-mail: Liviu(_dot_)Daia(_at_)imar(_dot_)ro
Institute of Mathematics web page: http://www.imar.ro/~daia
of the Romanian Academy PGP key: http://www.imar.ro/~daia/daia.asc