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Daniel Kahn Gillmor 27b25e45dc test: avoid showing legacy-display parts
Enigmail generates a "legacy-display" part when it sends encrypted
mail with a protected Subject: header.  This part is intended to
display the Subject for mail user agents that are capable of
decryption, but do not know how to deal with embedded protected
headers.

This part is the first child of a two-part multipart/mixed
cryptographic payload within a cryptographic envelope that includes
encryption (that is, it is not just a cleartext signed message).  It
uses Content-Type: text/rfc822-headers.

That is:

A └┬╴multipart/encrypted
B  ├─╴application/pgp-encrypted
C  └┬╴application/octet-stream
*   ╤ <decryption>
D   └┬╴multipart/mixed; protected-headers=v1 (cryptographic payload)
E    ├─╴text/rfc822-headers; protected-headers=v1 (legacy-display part)
F    └─╴… (actual message body)

In discussions with jrollins, i've come to the conclusion that a
legacy-display part should be stripped entirely from "notmuch show"
and "notmuch reply" now that these tools can understand and interpret
protected headers.

You can tell when a message part is a protected header part this way:

 * is the payload (D) multipart/mixed with exactly two children?
 * is its first child (E) Content-Type: text/rfc822-headers?
 * does the first child (E) have the property protected-headers=v1?
 * do all the headers in the body of the first child (E) match
   the protected headers in the payload part (D) itself?

If this is the case, and we already know how to deal with the
protected header, then there is no reason to try to render the
legacy-display part itself for the user.

Furthermore, when indexing, if we are indexing properly, we should
avoid indexing the text in E as part of the message body.

'notmuch reply' is an interesting case: the standard use of 'notmuch
reply' will end up omitting all mention of protected Subject:.

The right fix is for the replying MUA to be able to protect its
headers, and for it to set them appropriately based on headers found
in the original message.

If a replying MUA is unable to protect headers, but still wants the
user to be able to see the original header, a replying MUA that
notices that the original message's subject differs from the proposed
reply subject may choose to include the original's subject in the
quoted/attributed text. (this would be a stopgap measure; it's not
even clear that there is user demand for it)

This test suite change indicates what we want to happen for this case
(the tests are currently broken), and includes three additional TODO
suggestions of subtle cases for anyone who wants to flesh out the test
suite even further.  (i believe all these cases should be already
fixed by the rest of this series, but haven't had time to write the
tests for the unusual cases)

Signed-off-by: Daniel Kahn Gillmor <dkg@fifthhorseman.net>
2019-09-01 08:32:56 -03:00
bindings version: bump to 0.29.1 2019-06-11 20:11:45 -03:00
compat compat: run uncrustify 2019-06-14 07:41:27 -03:00
completion completion: more complete completion for zsh. 2018-10-02 21:04:26 -03:00
contrib contrib/notmuch-mutt: add install target 2018-09-18 07:54:33 -03:00
debian Merge branch 'release' 2019-07-21 16:15:19 -03:00
devel uncrustify: indent classes 2019-06-14 07:41:27 -03:00
doc repair: set up codebase for repair functionality 2019-09-01 08:20:25 -03:00
emacs emacs: add keywords to notmuch-emacs-mua.desktop 2019-06-29 21:06:18 +02:00
lib repair: set up codebase for repair functionality 2019-09-01 08:20:25 -03:00
packaging Use https instead of http where possible 2016-06-05 08:32:17 -03:00
parse-time-string parse-time-string: run uncrustify 2019-06-14 07:41:27 -03:00
performance-test perf-tests: #!/bin/bash -> #!/usr/bin/env bash 2019-06-07 07:59:56 -03:00
test test: avoid showing legacy-display parts 2019-09-01 08:32:56 -03:00
util repair: set up codebase for repair functionality 2019-09-01 08:20:25 -03:00
vim Fix typos as found by codespell 2018-03-24 20:09:54 -03:00
.dir-locals.el .dir-locals.el: changed one-char comment prefix '; ' to two; '; ; ' 2012-01-22 08:41:37 -04:00
.gitignore build: ignore *.stamp 2019-04-24 06:53:13 -03:00
.mailmap create .mailmap file (for git shortlog/blame) 2016-07-29 06:01:44 +09:00
.travis.yml travis: use ppa:notmuch/notmuch 2019-05-06 20:39:29 -03:00
AUTHORS move more http -> https 2018-05-03 20:59:20 -03:00
command-line-arguments.c cli: run uncrustify 2019-06-14 07:41:27 -03:00
command-line-arguments.h cli: run uncrustify 2019-06-14 07:41:27 -03:00
configure configure: fix out of tree build; check unsafe characters in srcdir 2019-08-29 14:32:54 -03:00
COPYING Use https instead of http where possible 2016-06-05 08:32:17 -03:00
COPYING-GPL-3 Use https instead of http where possible 2016-06-05 08:32:17 -03:00
debugger.c cli: run uncrustify 2019-06-14 07:41:27 -03:00
gmime-filter-reply.c cli: run uncrustify 2019-06-14 07:41:27 -03:00
gmime-filter-reply.h cli: run uncrustify 2019-06-14 07:41:27 -03:00
hooks.c cli: run uncrustify 2019-06-14 07:41:27 -03:00
INSTALL build: drop support for gmime-2.6 2019-05-03 06:49:49 -03:00
Makefile support make goals after initial {'', dist, data}clean goal(s) 2017-03-10 08:04:27 -04:00
Makefile.global release: use xz compression 2019-03-27 17:59:40 -03:00
Makefile.local release: use xz compression 2019-03-27 17:59:40 -03:00
mime-node.c mime-node: split out _mime_node_set_up_part 2019-09-01 08:17:00 -03:00
NEWS NEWS: news for 0.29.1 2019-06-11 20:15:04 -03:00
notmuch-client.h repair: set up codebase for repair functionality 2019-09-01 08:20:25 -03:00
notmuch-compact.c cli: convert notmuch_bool_t to stdbool 2017-10-09 22:24:02 -03:00
notmuch-config.c cli: run uncrustify 2019-06-14 07:41:27 -03:00
notmuch-count.c cli: run uncrustify 2019-06-14 07:41:27 -03:00
notmuch-dump.c notmuch-dump.c: Fix output file being closed twice 2019-07-23 19:20:18 -03:00
notmuch-insert.c cli: run uncrustify 2019-06-14 07:41:27 -03:00
notmuch-new.c cli: run uncrustify 2019-06-14 07:41:27 -03:00
notmuch-reindex.c cli: run uncrustify 2019-06-14 07:41:27 -03:00
notmuch-reply.c cli: run uncrustify 2019-06-14 07:41:27 -03:00
notmuch-restore.c cli: run uncrustify 2019-06-14 07:41:27 -03:00
notmuch-search.c cli: run uncrustify 2019-06-14 07:41:27 -03:00
notmuch-setup.c cli: run uncrustify 2019-06-14 07:41:27 -03:00
notmuch-show.c notmuch-show: run uncrustify 2019-07-05 17:54:36 +02:00
notmuch-tag.c cli: convert notmuch_bool_t to stdbool 2017-10-09 22:24:02 -03:00
notmuch-time.c cli: run uncrustify 2019-06-14 07:41:27 -03:00
notmuch.c cli: run uncrustify 2019-06-14 07:41:27 -03:00
query-string.c Use https instead of http where possible 2016-06-05 08:32:17 -03:00
README Use https instead of http where possible 2016-06-05 08:32:17 -03:00
README.rst Use https instead of http where possible 2016-06-05 08:32:17 -03:00
sprinter-json.c cli: convert notmuch_bool_t to stdbool 2017-10-09 22:24:02 -03:00
sprinter-sexp.c cli: convert notmuch_bool_t to stdbool 2017-10-09 22:24:02 -03:00
sprinter-text.c cli: convert notmuch_bool_t to stdbool 2017-10-09 22:24:02 -03:00
sprinter.h cli: run uncrustify 2019-06-14 07:41:27 -03:00
status.c cli: run uncrustify 2019-06-14 07:41:27 -03:00
tag-util.c cli: convert notmuch_bool_t to stdbool 2017-10-09 22:24:02 -03:00
tag-util.h cli: run uncrustify 2019-06-14 07:41:27 -03:00
version version: bump to 0.29.1 2019-06-11 20:11:45 -03:00

Notmuch - thread-based email index, search and tagging.

Notmuch is a system for indexing, searching, reading, and tagging
large collections of email messages in maildir or mh format. It uses
the Xapian library to provide fast, full-text search with a convenient
search syntax.

Notmuch is free software, released under the GNU General Public
License version 3 (or later).

Building notmuch
----------------
See the INSTALL file for notes on compiling and installing notmuch.

Running notmuch
---------------
After installing notmuch, start by running "notmuch setup" which will
interactively prompt for configuration information such as your name,
email address, and the directory which contains your mail archive to
be indexed. You can change any answers later by running "notmuch
setup" again or by editing the .notmuch-config file in your home
directory.

With notmuch configured you should next run "notmuch new" which will
index all of your existing mail. This can take a long time, (several
hours) if you have a lot of email, (hundreds of thousands of
files). When new mail is delivered to your mail archive in the future,
you will want to run "notmuch new" again. These runs will be much
faster as they will only index new messages.

Finally, you can prove to yourself that things are working by running
some command-line searches such as "notmuch search
from:someone@example.com" or "notmuch search subject:topic". See
"notmuch help search-terms" for more details on the available search
syntax.

The command-line search output is not expected to be particularly
friendly for day-to-day usage. Instead, it is expected that you will
use an email interface that builds on the notmuch command-line tool or
the libnotmuch library.

Notmuch installs a full-featured email interface for use within
emacs. To use this, first add the following line to your .emacs file:

	(autoload 'notmuch "notmuch" "Notmuch mail" t)

Then, either run "emacs -f notmuch" or execute the command "M-x
notmuch" from within a running emacs.

If you're interested in a non-emacs-based interface to notmuch, then
please join the notmuch community. Various other interfaces are
already in progress, (an interface within vim, a curses interface,
graphical interfaces based on evolution, and various web-based
interfaces). The authors of these interfaces would love further
testing or contribution. See contact information below.

Contacting users and developers
-------------------------------
The website for Notmuch is:

	https://notmuchmail.org

The mailing list address for the notmuch community is:

	notmuch@notmuchmail.org

We welcome any sort of questions, comments, kudos, or code there.

Subscription is not required, (but if you do subscribe you'll avoid
any delay due to moderation). See the website for subscription
information.

There is also an IRC channel dedicated to talk about using and
developing notmuch:

	IRC server:	irc.freenode.net
	Channel:	#notmuch