For more details, see the commit message for 7f2cb3be (nmbug:
Translate to Python, 2014-10-03). I realized while writing this that
the 7f2cb3be commit message has:
* 'nmbug log' now execs 'git log', as there's no need to keep the
Python process around once we've launched Git there.
But we dropped that exec in favor of the subprocess approach between
v3 and v4, I just forgot to update the commit message [1].
[1]: id:e630b6763e9d0771718afee41ea15b29bb4a1de8.1409935538.git.wking@tremily.us
http://article.gmane.org/gmane.mail.notmuch.general/19007
Previously, this was implemented using a horrible GDB script (because
there is no such thing as a non-horrible GDB script). This GDB script
often broke with newer versions of GDB for mysterious reasons. Port
the test script to GDB's Python API, which makes the code much cleaner
and, hopefully, more stable.
In the future, tests may rely on debug symbols being present in
notmuch, so we plan to switch the default flags.
The main purpose of this test is to help explain the perhaps
mysterious failures of other tests which rely on symbols being
present.
This allows us to capture stdout and stderr separately, and do other
explicit subprocess manipulation without resorting to external
packages. It should be compatible with Python 2.7 and later
(including the 3.x series).
Most of the user-facing interface is the same, but there are a few
changes, where reproducing the original interface was too difficult or
I saw a change to make the underlying Git UI accessible:
* 'nmbug help' has been split between the general 'nmbug --help' and
the command-specific 'nmbug COMMAND --help'.
* Commands are no longer split into "most common", "other useful", and
"less common" sets. If we need something like this, I'd prefer
workflow examples highlighting common commands in the module
docstring (available with 'nmbug --help').
* 'nmbug commit' now only uses a single argument for the optional
commit-message text. I wanted to expose more of the underlying 'git
commit' UI, since I personally like to write my commit messages in
an editor with the notes added by 'git commit -v' to jog my memory.
Unfortunately, we're using 'git commit-tree' instead of 'git
commit', and commit-tree is too low-level for editor-launching. I'd
be interested in rewriting commit() to use 'git commit', but that
seemed like it was outside the scope of this rewrite. So I'm not
supporting all of Git's commit syntax in this patch, but I can at
least match 'git commit -m MESSAGE' in requiring command-line commit
messages to be a single argument.
* The default repository for 'nmbug push' and 'nmbug fetch' is now the
current branch's upstream (branch.<name>.remote) instead of
'origin'. When we have to, we extract this remote by hand, but
where possible we just call the Git command without a repository
argument, and leave it to Git to figure out the default.
* 'nmbug push' accepts multiple refspecs if you want to explicitly
specify what to push. Otherwise, the refspec(s) pushed depend on
push.default. The Perl version hardcoded 'master' as the pushed
refspec.
* 'nmbug pull' defaults to the current branch's upstream
(branch.<name>.remote and branch.<name>.merge) instead of hardcoding
'origin' and 'master'. It also supports multiple refspecs if for
some crazy reason you need an octopus merge (but mostly to avoid
breaking consistency with 'git pull').
* 'nmbug log' now execs 'git log', as there's no need to keep the
Python process around once we've launched Git there.
* 'nmbug status' now catches stderr, and doesn't print errors like:
No upstream configured for branch 'master'
The Perl implementation had just learned to avoid crashing on that
case, but wasn't yet catching the dying subprocess's stderr.
* 'nmbug archive' now accepts positional arguments for the tree-ish
and additional 'git archive' options. For example, you can run:
$ nmbug archive HEAD -- --format tar.gz
I wish I could have preserved the argument order from 'git archive'
(with the tree-ish at the end), but I'm not sure how to make
argparse accept arbitrary possitional arguments (some of which take
arguments). Flipping the order to put the tree-ish first seemed
easiest.
* 'nmbug merge' and 'pull' no longer checkout HEAD before running
their command, because blindly clobbering the index seems overly
risky.
* In order to avoid creating a dirty index, 'nmbug commit' now uses
the default index (instead of nmbug.index) for composing the commit.
That way the index matches the committed tree. To avoid leaving a
broken index after a failed commit, I've wrapped the whole thing in
a try/except block that resets the index to match the pre-commit
treeish on errors. That means that 'nmbug commit' will ignore
anything you've cached in the index via direct Git calls, and you'll
either end up with an index matching your notmuch tags and the new
HEAD (after a successful commit) or an index matching the original
HEAD (after a failed commit).
Although this manual is far from complete, it may be helpful for
someone. In particular building it as part of the standard build
process makes it easier to find problems when editing the
notmuch-emacs-manual.
In Xapian, closing a database implicitly aborts any outstanding
transaction and commits changes. For historical reasons,
notmuch_database_close had grown to almost, but not quite duplicate
this behavior. Before closing the database, it would explicitly (and
unnecessarily) commit it. However, if there was an outstanding
transaction (ie atomic section), commit would throw a Xapian
exception, which notmuch_database_close would unnecessarily print to
stderr, even though notmuch_database_close would ultimately abort the
transaction anyway when it called close.
This patch simplifies notmuch_database_close to explicitly abort any
outstanding transaction and then just call Database::close. This
works for both read-only and read/write databases, takes care of
committing changes, unifies the exception handling path, and codifies
aborting outstanding transactions. This is currently the only way to
abort an atomic section (and may remain so, since it would be
difficult to roll back things we may have cached from rolled-back
modifications).
Make the function calls make more sense as independent building blocks
of the big picture, with clear inputs and outputs. Split up
write_message into two. Improve function documentation. Cleanup and
clarify the error paths.
This will clean up the usage. There's the slight functional change of
potentially ending up doing extra gethostname and getpid calls, but
this is neglible.
Combine make_directory() and make_directory_and_parents() into a
single recursive mkdir_recursive() function. Clarify the code and
improve error handling. Improve error messages. Switch to using the
new function in maildir_create_folder(). Constify talloc context.
The copying has nothing to do with stdin, so call it copy_fd
instead. While at it, improve documentation and reverse the
parameters, as destination is traditionally the first parameter.
An "is something" predicate conveys the meaning better. While at it,
improve the function documentation and error message. Besides the
error message change, no functional changes.
notmuch-jump uses window-body-width which is not defined in emacs
23. To get around this it does
(unless (fboundp 'window-body-width)
;; Compatibility for Emacs pre-24
(defalias 'window-body-width 'window-width))
This makes sure window-body-width is defined and all should be
well. But it seems that the byte compiler does not realise that this
guarantees that window-body-width will be defined and so, when
compiling with emacs 23, it gives an error
In end of data:
notmuch-jump.el:172:1:Warning: the function `window-body-width' is not known to be defined.
Domo and I came to following on irc: wrap the (unless (fboundp ...))
inside eval-and-compile which ensures that both the test and the
defalias (if needed) happen at both compile and load time. This fixes
the warning.
The test of viewing 8bit messages is known-broken. The rest pass, but
for very fragile reasons. The next several commits will fix the
known-broken test and make our charset handling robust.
Previously we did this for a single test, but some other proposed
tests ( id:1398105468-14317-3-git-send-email-amdragon@mit.edu ) show
similar breakage when switching renderers.
Note that this is one of those cases where an ABI change is not
obvious from the symbols file. Several previously void functions now
have return codes.
This should have happened in commit 6754ad9f9, but oops.
This was not caught by our test suite because it uses an installed
notmuch library of it cannot find the just built one.
After yet another variation in objdump output caused this test to fail
(on a Debian port, no less), I decided whatever putative benefit we
get from looking at the object files instead of the library isn't
worth the maintenence headache.
This version uses nm -P. nm -P should be portable, and fixed format.
It purposely doesn't use the -D argument, since that is non-POSIX and
nm on GNU/Linux seems do the right thing without it.
It still won't work out of the box on e.g. Mac OS/X. I think the right
thing to do there is to move some more configuration information into
sh.config.
as stated in thread.cc:115
/* Construct an authors string from matched_authors_array and
* authors_array. The string contains matched authors first, then
* non-matched authors (with the two groups separated by '|'). Within
* each group, authors are listed in date order. */
this is, however, not reflected in the public API documentation in
notmuch.h:970. This patch a paragraph explaining how | separates the
group of authors of messages matching the query and those of messages
that do not, but are still contained in the thread.
default-value needs its argument to be quoted.
Slightly strangely default-value of 't or nil is 't or nil
respectively so the code
(default-value notmuch-search-oldest-first)
just gives the current value of notmuch-search-oldest-first rather
than intended default-value of this variable.
The symptom is that if you are in a search buffer and use notmuch jump
to run a saved search which does not have an explicitly set sort order
then the sort order of the saved-search is inherited from the current
search buffer rather than being the default search order.
Thanks to Jani for finding the bug.
Previously, if the user ran any subcommand that required a
configuration (e.g., notmuch new) but didn't have a configuration,
notmuch would give the rather un-friendly and un-actionable message
Error reading configuration file .notmuch-config: No such file or directory
Since this condition is expected for new users, this patch adds
specific handling for the file-not-found case to give a message that
is friendly and actionable.
48db8c8 introduced a disagreement between when
notmuch_database_needs_upgrade returned TRUE and when
notmuch_database_upgrade actually performed an upgrade. As a result,
if a database had a version less than 3, but no new features were
required, notmuch new would call notmuch_database_upgrade to perform
an upgrade, but notmuch_database_upgrade would return immediately
without updating the database version. Hence, the next notmuch new
would do the same, and so on.
Fix this by ensuring that the upgrade-required logic is identical
between the two.
Previously, there was no protection against a caller invoking an
operation on an old database version that would effectively corrupt
the database by treating it like a newer version.
According to notmuch.h, any caller that opens the database in
read/write mode is supposed to check if the database needs upgrading
and perform an upgrade if it does. This would protect against this,
but nobody (even the CLI) actually does this.
However, with features, it's easy to protect against incompatible
operations on a fine-grained basis. This lightweight change allows
callers to safely operate on old database versions, while preventing
specific operations that would corrupt the database with an
informative error message.
Commit 567bcbc2 introduced support for storing various headers in
document values. However, doing so in a backwards-compatible way
meant that genuinely empty header values could not be distinguished
from the old behavior of not storing the headers at all, so these
required parsing the original message.
Now that we have database features, new databases can declare that all
messages have header values, so if we have this feature flag, we can
use the stored header value even if it's the empty string.
This requires slight cleanup to notmuch_message_get_header, since the
code previously couldn't distinguish between empty headers and headers
that are never stored in the database (previously this distinction
didn't matter).
Previously, some parts of upgrade didn't report progress and for
others it was possible for the progress meter to restart at 0 part way
through the upgrade because each stage was reported separately.
Fix this by computing the total amount of work that needs to be done
up-front and updating completed work monotonically.
Rather than potentially making multiple passes over the same type of
data in the database, reorganize upgrade around each type of data that
may be upgraded. This eliminates code duplication, will make
multi-version upgrades faster, and will let us improve progress
reporting.
Previously, we had database version information hard-coded in the
upgrade code. Slightly re-organize the upgrade process around the set
of new database features to be enabled by the upgrade.
Previously, the upgrade was organized as two passes -- an upgrade
pass, and a separate cleanup pass -- so the database was always in a
valid state. This change substantially simplifies this code by
performing the upgrade in a transaction and combining both passes in
to one. This 1) eliminates a lot of duplicate code between the
passes, 2) speeds up the upgrade process, 3) makes progress reporting
more accurate, 4) eliminates the potential for stale data if the
upgrade is interrupted during the cleanup pass, and 5) makes it easier
to reason about the safety of the upgrade code.
Previously, our database schema was versioned by a single number.
Each database schema change had to occur "atomically" in Notmuch's
development history: before some commit, Notmuch used version N, after
that commit, it used version N+1. Hence, each new schema version
could introduce only one change, the task of developing a schema
change fell on a single person, and it all had to happen and be
perfect in a single commit series. This made introducing a new schema
version hard. We've seen only two schema changes in the history of
Notmuch.
This commit introduces database schema version 3; hopefully the last
schema version we'll need for a while. With this version, we switch
from a single version number to "features": a set of named,
independent aspects of the database schema.
Features should make backwards compatibility easier. For many things,
it should be easy to support databases both with and without a
feature, which will allow us to make upgrades optional and will enable
"unstable" features that can be developed and tested over time.
Features also make forwards compatibility easier. The features
recorded in a database include "compatibility flags," which can
indicate to an older version of Notmuch when it must support a given
feature to open the database for read or for write. This lets us
replace the old vague "I don't recognize this version, so something
might go wrong, but I promise to try my best" warnings upon opening a
database with an unknown version with precise errors. If a database
is safe to open for read/write despite unknown features, an older
version will know that and issue no message at all. If the database
is not safe to open for read/write because of unknown features, an
older version will know that, too, and can tell the user exactly which
required features it lacks support for.
The version number has always been pretty meaningless to the user and
it's about to become even more meaningless with the introduction of
"features". Hopefully, the database will remain on version 3 for some
time to come; however, the introduction of new features over time in
version 3 will necessitate upgrades within version 3. It would be
confusing if we always tell the user they've been "upgraded to version
3". If the user wants to know what's new, they should read the news.
The completion script depends on bash-completion 1.90 or later, with
_init_completion function. If that's not present, for some reason, the
completion currently fails with an ugly message, messing up user's
command line:
$ notmuch -bash: _init_completion: command not found
It's better to just not complete
