-Notmuch 0.13 (2012-xx-xx)
+Notmuch 0.18 (UNRELEASED)
=========================
Command-Line Interface
----------------------
-Reply to sender
+`notmuch dump` now defaults to `batch-tag` format.
- "notmuch reply" has gained the ability to create a reply template
- for replying just to the sender of the message, in addition to reply
- to all. The feature is available through the new command line option
- --reply-to=(all|sender).
+ The old format is still available with `--format=sup`.
+
+`notmuch new` has a --quiet option
+
+ This option suppresses the progress and summary reports.
+
+Emacs Interface
+---------------
+
+Bug fix for saved searches with newlines in them.
+
+ Split lines confuse `notmuch count --batch`, so we remove embedded
+ newlines before calling notmuch count.
+
+Notmuch 0.17 (2013-12-30)
+=========================
+
+Incompatible change in SHA1 computation
+---------------------------------------
+
+Previously on big endian architectures like sparc and powerpc the
+computation of SHA1 hashes was incorrect. This meant that messages
+with overlong or missing message-ids were given different computed
+message-ids than on more common little endian architectures like i386
+and amd64. If you use notmuch on a big endian architecture, you are
+strongly advised to make a backup of your tags using `notmuch dump`
+before this upgrade. You can locate the affected files using something
+like:
+
+ notmuch dump | \
+ awk '/^notmuch-sha1-[0-9a-f]{40} / \
+ {system("notmuch search --exclude=false --output=files id:" $1)}'
+
+Command-Line Interface
+----------------------
+
+New options to better support handling duplicate messages
+
+ If more than one message file is associated with a message-id,
+ `notmuch search --output=files` will print all of them. A new
+ `--duplicate=N` option can be used to specify which duplicate to
+ print for each message.
+
+ `notmuch count` now supports `--output=files` option to output the
+ number of files associated with matching messages. This may be
+ bigger than the number of matching messages due to duplicates
+ (i.e. multiple files having the same message-id).
+
+Improved `notmuch new` performance for unchanged folders
+
+ `notmuch new` now skips over unchanged folders more efficiently,
+ which can substantially improve the performance of checking for new
+ mail in some situations (like NFS-mounted Maildirs).
+
+`notmuch reply --format=text` RFC 2047-encodes headers
+
+ Previously, this used a mix of standard MIME encoding for the reply
+ body and UTF-8 for the headers. Now, the text format reply template
+ RFC 2047-encodes the headers, making the output a valid RFC 2822
+ message. The JSON/sexp format is unchanged.
+
+`notmuch compact` command
+
+ The new `compact` command exposes Xapian's compaction
+ functionality through a more convenient interface than
+ `xapian-compact`. `notmuch compact` will compact the database to a
+ temporary location, optionally backup the original database, and
+ move the compacted database into place.
+
+Emacs Interface
+---------------
+
+`notmuch-tree` (formerly `notmuch-pick`) has been added to mainline
+
+ `notmuch-tree` is a threaded message view for the emacs
+ interface. Each message is one line in the results and the thread
+ structure is shown using UTF-8 box drawing characters (similar to
+ Mutt's threaded view). It comes between search and show in terms of
+ amount of output and can be useful for viewing both single threads
+ and multiple threads.
+
+ Using `notmuch-tree`
+
+ The main key entries to notmuch tree are
+
+ 'z' enter a query to view using notmuch tree (works in hello,
+ search, show and tree mode itself)
+
+ 'Z' view the current query in tree notmuch tree (works from search
+ and show)
+
+ Once in tree mode, keybindings are mostly in line with the rest of
+ notmuch and are all viewable with '?' as usual.
+
+ Customising `notmuch-tree`
+
+ `notmuch-tree` has several customisation variables. The most
+ significant is the first notmuch-tree-show-out which determines the
+ behaviour when selecting a message (with RET) in tree view. By
+ default tree view uses a split window showing the single message in
+ the bottom pane. However, if this option is set then it views the
+ whole thread in the complete window jumping to the selected message
+ in the thread. In either case command-prefix selects the other option.
+
+Tagging threads in search is now race-free
+
+ Previously, adding or removing a tag from a thread in a search
+ buffer would affect messages that had arrived after the search was
+ performed, resulting in, for example, archiving messages that were
+ never seen. Tagging now affects only the messages that were in the
+ thread when the search was performed.
+
+`notmuch-hello` refreshes when switching to the buffer
+
+ The hello buffer now refreshes whenever you switch to the buffer,
+ regardless of how you get there. You can disable automatic
+ refreshing by customizing `notmuch-hello-auto-refresh`.
+
+Specific mini-buffer prompts for tagging operations
+
+ When entering tags to add or remove, the mini-buffer prompt now
+ indicates what operation will be performed (e.g., "Tag thread", "Tag
+ message", etc).
+
+Built-in help improvements
+
+ Documentation for many commands has been improved, as displayed by
+ `notmuch-help` (usually bound to "?"). The bindings listed by
+ `notmuch-help` also now include descriptions of prefixed commands.
+
+Quote replies as they are displayed in show view
+
+ We now render the parts for reply quoting the same way they are
+ rendered for show. At this time, the notable change is that replies
+ to text/calendar are now pretty instead of raw vcalendar.
+
+Fixed inconsistent use of configured search order
+
+ All ways of interactively invoking search now honor the value of
+ `notmuch-search-oldest-first`.
+
+Common keymap for notmuch-wide bindings
+
+ Several key bindings have been moved from mode-specific keymaps to
+ the single `notmuch-common-keymap`, which is inherited by each
+ notmuch mode. If you've customized your key bindings, you may want
+ to move some of them to the common keymap.
+
+The `notmuch-tag` function now requires a list of tag changes
+
+ For users who have scripted the Emacs interface: the `notmuch-tag`
+ API has changed. Previously, it accepted either a list of tag
+ changes or a space-separated string of tag changes. The latter is
+ no longer supported and the function now returns nothing.
+
+Fixed `notmuch-reply` putting reply in primary selection
+
+ On emacs 24 notmuch-reply used to put the cited text into the
+ primary selection (which could lead to inadvertently pasting this
+ cited text elsewhere). Now the primary-selection is not changed.
+
+Fixed `notmuch-show` invisible part handling
+
+ In some obscure cases part buttons and invisibility had strange
+ interactions: in particular, the default action for some parts gave
+ the wrong action. This has been fixed.
+
+Fixed `notmuch-show` attachment viewers and stderr
+
+ In emacs 24.3+ viewing an attachment could cause spurious text to
+ appear in the show buffer (any stderr or stdout the viewer
+ produced). By default this output is now discarded. For debugging,
+ setting `notmuch-show-attachment-debug` causes notmuch to keep the
+ viewer's stderr and stdout in a separate buffer.
+
+Fixed `notmuch-mua-reply` point placement when signature involved
+
+ By restricting cursor movement to body section for cursor placement
+ after signature is inserted, the cursor cannot "leak" to header
+ section anymore. Now inserted citation content will definitely go to
+ the body part of the message.
+
+Vim Interface
+-------------
+
+ It is now possible to compose new messages in the Vim interface, as
+ opposed reply to existing messages. There is also support for
+ going straight to a search (bypassing the folders view).
+
+Notmuch 0.16 (2013-08-03)
+=========================
+
+Command-Line Interface
+----------------------
+
+Support for delivering messages to Maildir
+
+ There is a new command `insert` that adds a message to a Maildir
+ folder and notmuch index.
+
+`notmuch count --batch` option
+
+ `notmuch count` now supports batch operations similar to `notmuch
+ tag`. This is mostly an optimization for remote notmuch usage.
+
+`notmuch tag` option to remove all tags from matching messages
+
+ `notmuch tag --remove-all` option has been added to remove all tags
+ from matching messages. This can be combined with adding new tags,
+ resulting in setting (rather than modifying) the tags of the
+ messages.
+
+Decrypting commands explicitly expect a gpg-agent
+
+ Decryption in `notmuch show` and `notmuch reply` has only ever
+ worked with a functioning gpg-agent. This is now made explicit in
+ code and documentation. The functional change is that it's now
+ possible to have gpg-agent running, but gpg "use-agent"
+ configuration option disabled, not forcing the user to use the agent
+ everywhere.
+
+Configuration file saves follow symbolic links
+
+ The notmuch commands that save the configuration file now follow
+ symbolic links instead of overwrite them.
+
+Top level option to specify configuration file
+
+ It's now possible to specify the configuration file to use on the
+ command line using the `notmuch --config=FILE` option.
+
+Bash command-line completion
+
+ The notmuch command-line completion support for the bash shell has
+ been rewritten. Supported completions include all the notmuch
+ commands, command-line arguments, values for keyword arguments,
+ search prefixes (such as "subject:" or "from:") in all commands that
+ use search terms, tags after + and - in `notmuch tag`, tags after
+ "tag:" prefix, user's email addresses after "from:" and "to:"
+ prefixes, and config options (and some config option values) in
+ `notmuch config`. The new completion support depends on the
+ bash-completion package.
+
+Deprecated commands "part" and "search-tags" are removed.
+
+Emacs Interface
+---------------
+
+New keymap to view/save parts; removed s/v/o/| part button bindings
+
+ The commands to view, save, and open MIME parts are now prefixed
+ with "." (". s" to save, ". v" to view, etc) and can be invoked with
+ point anywhere in a part, unlike the old commands, which were
+ restricted to part buttons. The old "s"/"v"/"o"/"|" commands on
+ part buttons have been removed since they clashed with other
+ bindings (notably "s" for search!) and could not be invoked when
+ there was no part button. The new, prefixed bindings appear in
+ show's help, so you no longer have to memorize them.
+
+Default part save directory is now `mm-default-directory`
+
+ Previously, notmuch offered to save parts and attachments to a mix
+ of `mm-default-directory`, `mailcap-download-directory`, and `~/`.
+ This has been standardized on `mm-default-directory`.
+
+Key bindings for next/previous thread
+
+ Show view has new key bindings M-n and M-p to move to the next and
+ previous thread in the search results.
+
+Better handling of errors in search buffers
+
+ Instead of interleaving errors in search result buffers, search mode
+ now reports errors in the minibuffer.
+
+Faster search and show
+
+ Communication between Emacs and the notmuch CLI is now more
+ efficient because it uses the CLI's S-expression support. As a
+ result, search mode should now fill search buffers faster and
+ threads should show faster.
+
+No Emacs 22 support
+
+ The Emacs 22 support added late 2010 was sufficient only for a short
+ period of time. After being incomplete for roughly 2 years the code
+ in question was now removed from this release.
+
+Vim Front-End
+-------------
+
+The vim based front-end has been replaced with a new one that uses the Ruby
+bindings. The old font-end is available in the contrib subfolder.
+
+Python Bindings
+---------------
+
+Fix loading of libnotmuch shared library on OS X (Darwin) systems.
+
+Notmuch 0.15.2 (2013-02-17)
+===========================
+
+Build fixes
+-----------
+
+Update dependencies to avoid problems when building in parallel.
+
+Internal test framework changes
+-------------------------------
+
+Adjust Emacs test watchdog mechanism to cope with `process-attributes`
+being unimplemented.
+
+Notmuch 0.15.1 (2013-01-24)
+===========================
+
+Internal test framework changes
+-------------------------------
+
+Set a default value for TERM when running tests. This fixes certain
+build failures in non-interactive environments.
+
+Notmuch 0.15 (2013-01-18)
+=========================
+
+General
+-------
+
+Date range search support
+
+ The `date:` prefix can now be used in queries to restrict the results
+ to only messages within a particular time range (based on the Date:
+ header) with a range syntax of `date:<since>..<until>`. Notmuch
+ supports a wide variety of expressions in `<since>` and
+ `<until>`. Please refer to the `notmuch-search-terms(7)` manual page
+ for details.
+
+Empty tag names and tags beginning with "-" are deprecated
+
+ Such tags have been a frequent source of confusion and cause
+ (sometimes unresolvable) conflicts with other syntax. notmuch tag
+ no longer allows such tags to be added to messages. Removing such
+ tags continues to be supported to allow cleanup of existing tags,
+ but may be removed in a future release.
+
+Command-Line Interface
+----------------------
+
+`notmuch new` no longer chokes on mboxes
+
+ `notmuch new` now rejects mbox files containing more than one
+ message, rather than treating the file as one giant message.
+
+Support for single message mboxes is deprecated
+
+ For historical reasons, `notmuch new` will index mbox files
+ containing a single message; however, this behavior is now
+ officially deprecated.
+
+Fixed `notmuch new` to skip ignored broken symlinks
+
+ `notmuch new` now correctly skips symlinks if they are in the
+ ignored files list. Previously, it would abort when encountering
+ broken symlink, even if it was ignored.
+
+New dump/restore format and tagging interface
+
+ There is a new `batch-tag` format for dump and restore that is more
+ robust, particularly with respect to tags and message-ids containing
+ whitespace.
+
+ `notmuch tag` now supports the ability to read tag operations and
+ queries from an input stream, in a format compatible with the new
+ dump/restore format.
+
+Bcc and Reply-To headers are now available in notmuch show json output
+
+ The `notmuch show --format=json` now includes "Bcc" and "Reply-To" headers.
+ For example notmuch Emacs client can now have these headers visible
+ when the headers are added to the `notmuch-message-headers` variable.
+
+CLI callers can now request a specific output format version
+
+ `notmuch` subcommands that support structured output now support a
+ `--format-version` argument for requesting a specific version of the
+ structured output, enabling better compatibility and error handling.
+
+`notmuch search` has gained a null character separated text output format
+
+ The new --format=text0 output format for `notmuch search` prints
+ output separated by null characters rather than newline
+ characters. This is similar to the find(1) -print0 option, and works
+ together with the xargs(1) -0 option.
+
+Emacs Interface
+---------------
+
+Removal of the deprecated `notmuch-folders` variable
+
+ `notmuch-folders` has been deprecated since the introduction of saved
+ searches and the notmuch hello view in notmuch 0.3. `notmuch-folders`
+ has now been removed. Any remaining users should migrate to
+ `notmuch-saved-searches`.
+
+Visibility of MIME parts can be toggled
+
+ Each part of a multi-part MIME email can now be shown or hidden
+ using the button at the top of each part (by pressing RET on it or
+ by clicking). For emails with multiple alternative formats (e.g.,
+ plain text and HTML), only the preferred format is shown initially,
+ but other formats can be shown using their part buttons. To control
+ the behavior of this, see
+ `notmuch-multipart/alternative-discouraged` and
+ `notmuch-show-all-multipart/alternative-parts`.
+
+ Note notmuch-show-print-message (bound to '#' by default) will print
+ all parts of multipart/alternative message regardless of whether
+ they are currently hidden or shown in the buffer.
+
+Emacs now buttonizes mid: links
+
+ mid: links are a standardized way to link to messages by message ID
+ (see RFC 2392). Emacs now hyperlinks mid: links to the appropriate
+ notmuch search.
+
+Handle errors from bodypart insertions
+
+ If displaying the text of a message in show mode causes an error (in
+ the `notmuch-show-insert-part-*` functions), notmuch no longer cuts
+ off thread display at the offending message. The error is now
+ simply displayed in place of the message.
+
+Emacs now detects version mismatches with the notmuch CLI
+
+ Emacs now detects and reports when the Emacs interface version and
+ the notmuch CLI version are incompatible.
+
+Improved text/calendar content handling
+
+ Carriage returns in embedded text/calendar content caused insertion
+ of the calendar content fail. Now CRs are removed before calling icalendar
+ to extract icalendar data. In case icalendar extraction fails an error
+ is thrown for the bodypart insertion function to deal with.
+
+Disabled coding conversions when reading in `with-current-notmuch-show-message`
+
+ Depending on the user's locale, saving attachments containing 8-bit
+ data may have performed an unintentional encoding conversion,
+ corrupting the saved attachment. This has been fixed by making
+ `with-current-notmuch-show-message` disable coding conversion.
+
+Fixed errors with HTML email containing images in Emacs 24
+
+ Emacs 24 ships with a new HTML renderer that produces better output,
+ but is slightly buggy. We work around a bug that caused it to fail
+ for HTML email containing images.
+
+Fixed handling of tags with unusual characters in them
+
+ Emacs now handles tags containing spaces, quotes, and parenthesis.
+
+Fixed buttonization of id: links without quote characters
+
+ Emacs now correctly buttonizes id: links where the message ID is not
+ quoted.
+
+`notmuch-hello` refresh point placement improvements
+
+ Refreshing the `notmuch-hello` buffer does a better job of keeping
+ the point where it was.
+
+Automatic tag changes are now unified and customizable
+
+ All the automatic tag changes that the Emacs interface makes when
+ reading, archiving, or replying to messages, can now be
+ customized. Any number of tag additions and removals is supported
+ through the `notmuch-show-mark-read`, `notmuch-archive-tags`, and
+ `notmuch-message-replied-tags` customization variables.
+
+Support for stashing the thread id in show view
+
+ Invoking `notmuch-show-stash-message-id` with a prefix argument
+ stashes the (local and database specific) thread id of the current
+ thread instead of the message id.
+
+New add-on tool: notmuch-pick
+-----------------------------
+
+The new contrib/ tool `notmuch-pick` is an experimental threaded message
+view for the emacs interface. Each message is one line in the results
+and the thread structure is shown using UTF-8 box drawing characters
+(similar to Mutt's threaded view). It comes between search and show in
+terms of amount of output and can be useful for viewing both single
+threads and multiple threads. See the notmuch-pick README file for
+further details and installation.
+
+Portability
+-----------
+
+notmuch now builds on OpenBSD.
+
+Internal test framework changes
+-------------------------------
+
+The emacsclient binary is now user-configurable
+
+ The test framework now accepts `TEST_EMACSCLIENT` in addition to
+ `TEST_EMACS` for configuring the emacsclient to use. This is
+ necessary to avoid using an old emacsclient with a new emacs, which
+ can result in buggy behavior.
+
+Notmuch 0.14 (2012-08-20)
+=========================
+
+General bug fixes
+-----------------
+
+Maildir tag synchronization
+
+ Maildir flag-to-tag synchronization now applies only to messages in
+ maildir-like directory structures. Previously, it applied to any
+ message that had a maildir "info" part, which meant it could
+ incorrectly synchronize tags for non-maildir messages, while at the
+ same time failing to synchronize tags for newly received maildir
+ messages (typically causing new messages to not receive the "unread"
+ tag).
+
+Command-Line Interface
+----------------------
+
+ The deprecated positional output file argument to `notmuch dump` has
+ been replaced with an `--output` option. The input file positional
+ argument to `notmuch restore` has been replaced with an `--input`
+ option for consistency with dump. These changes simplify the syntax
+ of dump/restore options and make them more consistent with other
+ notmuch commands.
+
+Emacs Interface
+---------------
+
+Search results now get re-colored when tags are updated
+
+The formatting of tags in search results can now be customized
+
+ Previously, attempting to change the format of tags in
+ `notmuch-search-result-format` would usually break tagging from
+ search-mode. We no longer make assumptions about the format.
+
+Experimental support for multi-line search result formats
+
+ It is now possible to embed newlines in
+ `notmuch-search-result-format` to make individual search results
+ span multiple lines.
+
+Next/previous in search and show now move by boundaries
+
+ All "next" and "previous" commands in the search and show modes now
+ move to the next/previous result or message boundary. This doesn't
+ change the behavior of "next", but "previous" commands will first
+ move to the beginning of the current result or message if point is
+ inside the result or message.
+
+Search now uses the JSON format internally
+
+ This should address problems with unusual characters in authors and
+ subject lines that could confuse the old text-based search parser.
+
+The date shown in search results is no longer padded before applying
+user-specified formatting
+
+ Previously, the date in the search results was padded to fixed width
+ before being formatted with `notmuch-search-result-format`. It is
+ no longer padded. The default format has been updated, but if
+ you've customized this variable, you may have to change your date
+ format from `"%s "` to `"%12s "`.
+
+The thread-id for the `target-thread` argument for `notmuch-search` should
+now be supplied without the "thread:" prefix.
+
+Notmuch 0.13.2 (2012-06-02)
+===========================
+
+Bug-fix release
+---------------
+
+Update `contrib/notmuch-deliver` for API changes in 0.13. This fixes a
+compilation error for this contrib package.
+
+Notmuch 0.13.1 (2012-05-29)
+===========================
+
+Bug-fix release
+---------------
+
+Fix inserting of UTF-8 characters from *text/plain* parts in reply
+
+ While notmuch gained ability to insert content from other than *text/plain*
+ parts of email whenever *text/plain* parts are not available (notably
+ HTML-only emails), replying to mails that do have *text/plain* the
+ non-ASCII characters were incorrectly decoded. This is now fixed.
+
+`notmuch_database_get_directory` and
+`notmuch_database_find_message_by_filename` now work on read-only
+databases
+
+ Previously, these functions attempted to create directory documents
+ that didn't exist and would return an error or abort when given a
+ read-only database. Now they no longer create directory documents
+ and simply return a `NULL` object if the directory does not exist,
+ as documented.
+
+Fix compilation of ruby bindings
+
+ Revert to dynamic linking, since the statically linked bindings did
+ not work well.
+
+Notmuch 0.13 (2012-05-15)
+=========================
+
+Command-Line Interface
+----------------------
JSON reply format
- "notmuch reply" can now produce JSON output that contains the headers
+ `notmuch reply` can now produce JSON output that contains the headers
for a reply message and full information about the original message
begin replied to. This allows MUAs to create replies intelligently.
For example, an MUA that can parse HTML might quote HTML parts.
- Calling notmuch reply with --format=json imposes the restriction that
+ Calling notmuch reply with `--format=json` imposes the restriction that
only a single message is returned by the search, as replying to
multiple messages does not have a well-defined behavior. The default
retains its current behavior for multiple message replies.
Tag exclusion
Tags can be automatically excluded from search results by adding them
- to the new 'search.exclude_tags' option in the Notmuch config file.
+ to the new `search.exclude_tags` option in the Notmuch config file.
This behaviour can be overridden by explicitly including an excluded
tag in your query, for example:
- notmuch search $your_query and tag:$excluded_tag
+ notmuch search $your_query and tag:$excluded_tag
- Existing users will probably want to run "notmuch setup" again to add
+ Existing users will probably want to run `notmuch setup` again to add
the new well-commented [search] section to the configuration file.
For new configurations, accepting the default setting will cause the
tags "deleted" and "spam" to be excluded, equivalent to running:
- notmuch config set search.exclude_tags deleted spam
+ notmuch config set search.exclude_tags deleted spam
Raw show format changes
- The output of show --format=raw has changed for multipart and
+ The output of show `--format=raw` has changed for multipart and
message parts. Previously, the output was a mash of somewhat-parsed
headers and transfer-decoded bodies. Now, such parts are reproduced
faithfully from the original source. Message parts (which includes
Listing configuration items
- The new "config list" command prints out all configuration items and
+ The new `config list` command prints out all configuration items and
their values.
Emacs Interface
The user-facing tagging functions in the Emacs interface have been
normalized across all notmuch modes. The tagging functions are now
- 'notmuch-search-tag' in search-mode, and 'notmuch-show-tag' in
+ notmuch-search-tag in search-mode, and notmuch-show-tag in
show-mode. They accept a string representing a single tag change,
or a list of tag changes. See 'M-x describe-function notmuch-tag'
for more information.
New add-on tool: notmuch-mutt
-----------------------------
-The new contrib/ tool "notmuch-mutt" provides Notmuch integration for
+The new contrib/ tool `notmuch-mutt` provides Notmuch integration for
the Mutt mail user agent. Using it, Mutt users can perform mail
search, thread reconstruction, and mail tagging/untagging without
leaving Mutt. notmuch-mutt, formerly distributed under the name
-"mutt-notmuch" by Stefano Zacchiroli, will be maintained as a notmuch
+`mutt-notmuch` by Stefano Zacchiroli, will be maintained as a notmuch
contrib/ from now on.
Library changes
The API changes detailed below break binary and source compatibility,
so libnotmuch has been bumped to version 3.0.0.
-The function notmuch_database_close has been split into
-notmuch_database_close and notmuch_database_destroy
+The function `notmuch_database_close` has been split into
+`notmuch_database_close` and `notmuch_database_destroy`
This makes it possible for long running programs to close the xapian
database and thus release the lock associated with it without
destroying the data structures obtained from it.
-notmuch_database_open, notmuch_database_create, and
-notmuch_database_get_directory now return errors
+`notmuch_database_open`, `notmuch_database_create`, and
+`notmuch_database_get_directory` now return errors
The type signatures of these functions have changed so that the
- functions now return a notmuch_status_t and take an out-argument for
+ functions now return a `notmuch_status_t` and take an out-argument for
returning the new database object or directory object.
-go bindings changes
+Go bindings changes
-------------------
Go 1 compatibility
- The go bindings and the notmuch-addrlookup utility are now
+ The go bindings and the `notmuch-addrlookup` utility are now
compatible with go 1.
Notmuch 0.12 (2012-03-20)
projects / notmuch / blobdiff