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notmuch clon
2c262042ac
Tags in a notmuch database affect all messages with the identical
message-ID. But maildir tags affect individual files. And since
multiple files can contain the identical message-ID, there is not a
one-to-one correspondence between messages affected by tags and flags.
This is particularly dangerous with the 'T' (== "trashed") maildir
flag and the corresponding "deleted" tag in the notmuch
database. Since these flags/tags are often used to trigger
irreversible deletion operations, the lack of one-to-one
correspondence can be potentially dangerous.
For example, consider the following sequence:
1. A third-party application is used to identify duplicate messages
in the mail store, and mark all-but-one of each duplicate with
the 'T' flag for subsequent deletion.
2. A "notmuch new" operation reads that 'T' flag, adding the
"deleted" flag to the corresponding messages within the notmuch
database.
3. A subsequent notmuch operation, (such as a "notmuch dump; notmuch
restore" cycle) synchronized the "deleted" tag back to the mail
store, applying the 'T' flag to all(!) filenames with duplicate
message IDs.
4. A third-party application reads the 'T' flags and irreversibly
deletes all mail messages which had any duplicates(!).
In order to avoid this scenario, we simply refuse to synchronize the
'T' flag with the "deleted" tag. Instead, applications can set 'T' and
act on it to delete files, or can set "deleted" and act on it to
delete files. But in either case the semantics are clear and there is
never dangerous propagation through the one-to-many mapping of notmuch
message objects to files.
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|---|---|---|
| bindings | ||
| compat | ||
| completion | ||
| debian | ||
| emacs | ||
| lib | ||
| packaging | ||
| test | ||
| vim | ||
| .gitignore | ||
| AUTHORS | ||
| configure | ||
| COPYING | ||
| COPYING-GPL-3 | ||
| debugger.c | ||
| gmime-filter-headers.c | ||
| gmime-filter-headers.h | ||
| gmime-filter-reply.c | ||
| gmime-filter-reply.h | ||
| INSTALL | ||
| json.c | ||
| Makefile | ||
| Makefile.local | ||
| NEWS | ||
| notmuch-client.h | ||
| notmuch-config.c | ||
| notmuch-count.c | ||
| notmuch-dump.c | ||
| notmuch-new.c | ||
| notmuch-reply.c | ||
| notmuch-restore.c | ||
| notmuch-search-tags.c | ||
| notmuch-search.c | ||
| notmuch-setup.c | ||
| notmuch-show.c | ||
| notmuch-tag.c | ||
| notmuch-time.c | ||
| notmuch.1 | ||
| notmuch.c | ||
| notmuch.desktop | ||
| query-string.c | ||
| README | ||
| RELEASING | ||
| show-message.c | ||
| TODO | ||
| version | ||
| xutil.c | ||
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: (require 'notmuch) 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: http://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