I don't know what it means but I notice that if I run show all header
fields show up despite being ignored in both mhl.format and mhl.headers.
However, if I use Paul Fox's ml script and run ml on the message those
header fields are gone.
In message <f4500c65011301a7@cadfael.fios-router.home>, aalinovi@riseup.net
writes:
In message <20220219233546.22FA318CC0E@pb-smtp20.pobox.com>, Ken Hornstein=
writes:
Is it possible the "certain mail" that ignores mhl.headers are not
MIME messages? Specifically, do those messages meet the following
criteria:
- Either lack a top-level Content-Type header, or contain a Content-Type
header that specifies text/plain with either a us-ascii character
set or your native character set
- Either lack a Content-Transfer-Encoding header, or contain a C-T-E
header specifying an encoding of 7bit, 8bit, or binary.
If the message is considered "text" (by passing BOTH of the above
tests), then "show" will run mhl to display the message, which uses
mhl.format to display the ENTIRE messages.
If the message is considered "nontext" (by failing either one of the
above tests) then "show" runs "mhshow" to display the message, which
uses mhl to display the headers (which by default uses mhl.headers)
and then decodes parts of the msssage body that it can.
So if you want to exclude headers in ALL messages, you need to put
them in both mhl.headers and mhl.format. That's because of nmh's
incomplete MIME handling. Sigh.
--Ken
This particular message has the following header field:
Content-Type: text/plain; charset=3Dus-ascii
Content-Transfer-Encoding: 7bit
From: Arthur Alinovi <aalinovi@riseup.net>
Mime-Version: 1.0 (1.0)
Date: Sat, 22 Jan 2022 17:55:10 -0500
After copying all of my "ignore" lines from ~/Mail/mhl.headers to
~/Mail/mhl.format, they still show up.
Mr Paul Fox wonders if having the ignores lines broken up as I do will
work or if they should be one long line which he says is how he has it.
Thank you
Arthur