Brian asked,
| I would like to remove a single "Received:" header that contains 2
| strings. I don't want to toss out the other "Received:" headers, only
| the one the matches the 2 strings. Renaming the matching "Received:"
| header to "old-Received:" would be even better. And then after all of
| that is done, I want the rest of my recipes to continue processing the
| message.
I gather that there is no way to tell where among the Received: headers that
particular one will appear: topmost (latest), bottommost (earliest), or
anywhere in between. Also, I'm not sure whether you're looking for one that
includes *either* of the two strings or *both* of the two strings (and your
sample code didn't clear that question up positively either).
My only advice is to filter the entire head through
formail -c | grep -v pattern # or egrep if you need to search for either
# string instead of both
or
formail -c | sed 's/^Received:.*pattern/Old-&/' # if you want to prepend
# Old- à la formail -i instead of deleting
Either way, you'll lose the breaks in any continued header lines.
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