Bart Schaefer wrote:
It turns out that this single command works:
formail -iMessage-Id: -R List-Post: Message-Id: -D 1024 listpost.cache
So one *can* cache any header, by renaming it Message-Id: with -R.
Yes, as I had said in the meantime. The trick is that one has to use -i
and not -I, or formail will remove the Message-Id: header that used to
be List-Post: along with the original Message-Id:.
Where Dallman had,
formail -iMessage-Id: -R List-Post: Message-Id: -D 1024 listpost.cache \
-R Message-Id: Listpost: -R Old-Message-Id: Message-ID:
Bart asked Dallman,
Did you really mean to rename List-Post as Listpost, there?
I'm guessing he didn't.
However, what's the point of attempting to restore the old header state?
AFAICT, -D always causes the output to be thrown away, so you can't use
this in a filter.
I was thinking the same thing: that Dallman was posting as if it were a
filter, and it isn't.
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