The main idea is consider the notmuch database as analogous to the
work-tree. A bare git repo is maintained in the users home directory,
with a tree of the form tags/$message-id/$tag
Like notmuch and git, we have a set of subcommnds, mainly modelled on
git.
Implementation wise, the heavy lifting is in the following functions.
commit xapian -> git
checkout git -> xapian
merge fetched git + git -> xapian
status find differences between xapian, git, and remote git.
The central implementation trick, from an idea I think due to
tomprince on IRC is manipulate the git index directly from the xapian
tag information. The merge routine is still done using a temporary
checkout as I wasn't able to get it working with the index only.
There are also some convenience wrappers around git commands, like "fetch"
that essential just set GIT_DIR in the environment.
In order to encode tags (viewed as octet sequences) into filenames,
we whitelist a smallish set of characters and %hex escape anything outside.
The prefix is omitted in git, which lets one save and restore to
different prefixes (although this is only lightly tested).
Thanks to Tomi Ollila for a huge amount of feedback and patches while
putting this together.
Add function `notmuch-show-stash-message-id-stripped'
which stashes a Message-ID after ripping off the prefix and quotes,
add bind it to "I" key in `notmuch-show-stash-map'.
Simplifying `notmuch-show-get-message-id' instead might seem better,
but that would require concat'ing in 9 places instead of 1.
Signed-off-by: Pieter Praet <pieter@praet.org>
It is very convenient when C-e (bound to `widget-end-of-line') ignores
trailing spaces inside the search widget. But it only does so if a
widget is not followed by a newline (that is why it works in the saved
search widgets). The patch just adds an invisible space after the
search widget to get the desirable behavior of `widget-end-of-line'.
The extra space is also added to expected results of emacs tests.
Buffer redisplay requires traversing the buffer's invisibility spec
for every part of the display that has an 'invisible text or overlay
property. Previously, the search buffer's invisibility spec list
contained roughly one entry for each search result. As a result,
redisplay took O(NM) time where N is the number of visible lines and M
is the total number of results. On a slow computer, this is enough to
make even buffer motion noticeably slow. Worse, during a search
operation, redisplay is triggered for each search result (even if
there are no visible buffer changes), so search was quadratic
(O(NM^2)) in the number of search results.
This change switches to using a single element buffer invisibility
spec. To un-hide authors, instead of removing an entry from the
invisibility spec, it simply removes the invisibility overlay from
those authors.
I tested using a query with 6633 results on a 9 year old machine.
Before this patch, Emacs took 70 seconds to fill the search buffer;
toward the end of the search, Emacs consumed 10-20x as much CPU as
notmuch; and moving point in the buffer took about a second. With
this patch, the same query takes 40 seconds, Emacs consumes ~3x the
CPU of notmuch by the end, and there's no noticeable lag to moving
point. (There's still some source of non-linearity, because Emacs and
notmuch consume roughly the same amount of CPU early in the search.)
Emacs 23.2 queries by default about killing existing processes. This
is annoying when one wants to interrupt long search with 'q' key.
Disable this behavior for notmuch.
`point-invisible-p' does not work correctly when `invisible'
property is a list. There are standard `invisible-p' and related
functions that should be used instead.
Use `previous-single-char-property-change' instead of going
through each character by hand and testing it's visibility. This
fixes `notmuch-show-advance-and-archive' to work for the last
message in thread with hidden signature.
Set SCREENRC and SYSSCREENRC environment variables to "/dev/null"
as suggested by Jim Paris to avoid potential problems with
screen(1) configuration files.
Before the change, emacs run in daemon mode without any visible
buffers. Turns out that this affects emacs behavior in some
cases. In particular, `window-end' function returns `point-max'
instead of the last visible position. That makes it hard or
impossible to implement some tests. The patch runs emacs in a
detached screen(1) session. So that it works exactly as if it
has a visible window.
Note: screen terminates when emacs exits. So the patch does not
introduce new "running processes left behind" issues.
We won't use all of the included build infrastructure files, but adding them
nevertheless helps to track changes that are applied to them upstream.
Signed-off-by: Thomas Schwinge <thomas@schwinge.name>
Apparently the method was renamed in Xapian 1.1.0 but the old method
name will stay around for a while. It seems better to stick with the
old name to make notmuch compile with older versions of Xapian, at
least for now.
libnotmuch.so.* linking fail on some environments. According to
David Bremner on irc:
"We jump through hoops with the linker script (notmuch.sym) so
the pragmas are not needed. And they are a little bizarre in a
library anyway..."
This pushes the error handling up one step, but makes the function
more flexible. Running out of memory still triggers an internal error,
in the spirit of other xutils functions.
We keep the lib/xutil.c version. As a consequence, also factor out
_internal_error and associated macros. It might be overkill to make a
new file error_util.c for this, but _internal_error does not really
belong in database.cc.
Currently this builds a native package, but since the source package
is throw away, it should not matter too much, except for the extra
warnings from lintian.
The extra +1 is so that if $(VERSION) is the same as the last released
version (for example outside a git repo) then the versions still order
correctly.
