"Gary Funck" <gary(_at_)Intrepid(_dot_)Com> writes:
Timothy J. Luoma writes:
...
In a certain recipe, I would like to get rid of all headers except:
From
Subject
Date
All the headers will exist for all messages.
...
You might try the following recipe:
:0 fhw
| (formail -X From -X From: -X Subject: -X Date: ; echo "")
The "-X From" is optional, but needed if you want the resulting message
to be well-formed. Likewise the 'echo ""' is needed to ensure that the
header terminates with a blank line.
The "-X From" should include a quoted space to avoid matching on any
header field that starts with "From". The echo can be eliminated by
instead giving formail the -k option, so that it will preserve the blank
line that ends the header:
:0 fhw
| formail -X"From " -XFrom: -XSubject: -XDate: -k
Since procmail can invoke formail in that action directly without using
a shell, it'll be more efficient.
Good job, Gary, catching the need for the "From " and blank lines.
...
Optionally, you can use egrep:
:0 fhW
| egrep -i '^(From |From: |Date: | Subject:|$)'
This doesn't handle continued header fields, so I would recommend
against it.
Philip Guenther
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