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The complicated looking escapes are needed to avoid compile time
warnings. (info "(elisp) Text Quoting Style") for details.
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That's what we usually do. Also do not declare variable
`diff-file-header-re' because it is defined in `diff-mode.el',
which we always require.
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`notmuch-show-insert-part-text/plain' calls
`notmuch-show-insert-text/plain-hook' with two arguments
MSG and DEPTH. Currently all hook functions ignore MSG but
third-party functions may not. One hook function uses DEPTH.
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The previous commit switched to lexical-binding but without dealing
with the new warnings about unused lexical arguments and variables.
This commit deals with most of them, in most cases by either removing
leftover bindings that are actually unnecessary, or by marking certain
arguments as "known to be unused" by prefixing their names with "_".
In the case of the functions named `notmuch-show-insert-...' the
amount of silencing that is required is a bit extreme and we might
want to investigate if there is a better way.
In the case of `notmuch-mua-mail', ignoring CONTINUE means that we do
not fully follow the intended behavior described in `compose-mail's
doc-string.
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Doing so causes many new compile warnings. Some of these warnings
concern genuine changes in behavior that have to be addressed right
away.
Many other warnings are due to unused variables. Nothing has changed
here, except that the byte-compiler can now detect these pre-existing
and harmless issues. We delay addressing these issues so that we can
focus on the important ones here.
A third group of warnings concern arguments that are not actually used
inside the function but which cannot be removed because the functions
signature is dictated by some outside convention. Silencing these
warning is also delayed until subsequent commits.
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`outline-minor-mode' treats comments that begin with three or more
semicolons as headings. That makes it very convenient to navigate
code and to show/hide parts of a file.
Elips libraries typically have four top-level sections, e.g.:
;;; notmuch.el --- run notmuch within emacs...
;;; Commentary:...
;;; Code:...
;;; notmuch.el ends here
In this package many libraries lack a "Commentary:" section, which is
not optimal but okay for most libraries, except major entry points.
Depending on how one chooses to look at it, the "... ends here" line
is not really a heading that begins a section, because it should never
have a "section" body (after all it marks eof).
If the file is rather short, then I left "Code:" as the only section
that contains code. Otherwise I split the file into multiple sibling
sections. The "Code:" section continues to contain `require' and
`declare-function' forms and other such "front matter".
If and only if I have split the code into multiple sections anyway,
then I also added an additional section named just "_" before the
`provide' form and shortly before the "...end here" line. This
section could also be called "Back matter", but I feel it would be
distracting to be that explicit about it. (The IMO unnecessary but
unfortunately still obligatory "... ends here" line is already
distracting enough as far as I am concerned.)
Before this commit some libraries already uses section headings, some
of them consistently. When a library already had some headings, then
this commit often sticks to that style, even at the cost inconsistent
styling across all libraries.
A very limited number of variable and function definitions have to be
moved around because they would otherwise end up in sections they do
not belong into.
Sections, including but not limited to their heading, can and should
be further improved in the future.
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Also do so for some 'if' forms that lack an ELSE part.
Even go as far as using 'and' and 'not' instead of 'unless'.
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Most people who write lots of lisp tend to only sparsely use empty
"separator" lines within forms. In lisp they feel unnecessary and
since most files stick to this convention we get a bit confused
when there are extra empty lines. It feels like the s-expressions
are falling into pieces.
All of this is especially true between a function's doc-string and
body because the doc-string is colored differently, which visually
already separates it quite sufficiently from the code that follows.
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Fixed emacs docstrings to be consistent. No functional change.
- removed some (accidental) indentation
- removed some trailing newlines
- added trailing periods where missing (some exclusions)
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This is needed so that notmuch-wash.el is loadable by itself; in
particular for the docstring processing.
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Previously if notmuch-wash-wrap-lines-length was set then all messages
would be wrapped at this value (or window-width if that is
smaller). This was done regardless of the message's depth in a thread --
for example, if the n.w.w.l.l is 80 and the messages depth is 20
(so indented 20 by default) the messages text only got 60 characters
of space.
This commit changes that so a message always gets the full n.w.w.l.l
of width regardless of its indentation (unless that goes over
window-width of course).
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Previously notmuch-wash made the width of the text (approximately) the
window-width minus the depth in thread. This is correct for the
default indentation of 1 per message depth, but is incorrect for any
other setting of notmuch-show-indent-messages-width.
As notmuch-show-indent-messages-width is customisable, and notmuch-tree
sets it to zero to avoid indenting messages in the message pane, this
bug can show up in real use.
Two of the tests had to be updated: when
notmuch-show-indent-messages-width is 0, then the new (correct) word
wrapping happens later, when notmuch-show-indent-messages-width is 4,
then the new word wrapping happens sooner.
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Many of the external links found in the notmuch source can be resolved
using https instead of http. This changeset addresses as many as i
could find, without touching the e-mail corpus or expected outputs
found in tests.
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Refer to (info "(elisp) Library Headers") for package conventions.
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More of the washing variables should be available through the standard
customisation interface.
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The faces used when washing messages should be notmuch specific and
inherit from the underlying emacs face rather than using it
directly. This allows the washed face to be modified without requiring
the modification of the underlying face.
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Previously, we lost any text properties applied to part buttons or
wash buttons when they were toggled because `insert' directly copies
the text properties of the string being inserted. Fix this by
capturing the properties applied to the button beforehand and
re-applying them after inserting the new text.
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The inline patch fake part handler also modifies the content-type so
handle this in notmuch-show-insert-bodypart too.
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Some (declare-function ...) definitions were drifted away from the
actual (defun ...)'s. To find the drifts and to verify changes
the following command line was used:
$ emacs --batch -L emacs --eval '(check-declare-directory "emacs")'
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Emacs has two button type objects: widgets (as used for saved searches
in notmuch-hello) and buttons as used by parts/citations and id links
in notmuch-show. These two behave subtly differently when clicked with
the mouse: widgets select the window clicked before running the
action, buttons do not.
This patch makes all of these behave the same: clicking always selects
the clicked window. It does this by defining a notmuch-button-type
supertype that the other notmuch buttons can inherit from. This
supertype binds the mouse-action to select the window and then
activate the button.
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Previously, all visibility in show buffers for headers, message
bodies, and washed text was specified by generating one or more
symbols for each region and creating overlays with their 'invisible
property set to carefully crafted combinations of these symbols.
Visibility was controlled not by modifying the overlays directly, but
by adding and removing the generated symbols from a gigantic buffer
invisibilty spec.
This has myriad negative consequences. It's slow because Emacs'
display engine has to traverse the buffer invisibility list for every
overlay and, since every overlay has its own symbol, this makes
rendering O(N^2) in the number of overlays. It composes poorly
because symbol-type 'invisible properties are taken from the highest
priority overlay over a given character (which is often ambiguous!),
rather than being gathered from all overlays over a character. As a
result, we have to include symbols related to message hiding in the
wash code lest the wash overlays un-hide parts of hidden messages. It
also requires various workarounds for isearch to properly open
overlays, to set up buffer-invisibility-spec for
remove-from-invisibility-spec to work right, and to explicitly refresh
the display after updating the buffer invisibility spec.
None of this is necessary.
This patch converts show and wash to use simple boolean 'invisible
properties and to not use the buffer invisibility spec. Rather than
adding and removing generated symbols from the invisibility spec, the
code now directly toggles the 'invisible property of the appropriate
overlay. This speeds up rendering because the display engine only has
to check the boolean values of the overlays over a character. It
composes nicely because text will be invisible if *any* overlay over
it has 'invisible t, which means we can overlap invisibility overlays
with abandon. We no longer need any of the workarounds mentioned
above. And it fixes a minor bug for free: now, when isearch opens a
washed region, the button text will update to say "Click/Enter to
hide" rather than remaining unchanged.
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This introduces a variable to control after how many characters a line
is wrapped by notmuch-wash-wrap-long-lines (still wrapping at the
window width if it is lower).
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`Notmuch-wash-region-to-button' is the function that creates hidden
regions with buttons for signatures, citations and original messages.
Before the change, it did not work correctly if the to-be-hidden
region started at the beginning of a message: the visibility toggle
button was hidden as well. The patch fixes this. There are two parts
in the fix:
* Use `insert-before-markers' instead of `insert' for creating the
button, so that it does not get added to the hidden overlay.
* Stop using PREFIX argument for adding a newline before the button.
The newline should not be added before a button at the beginning of
buffer.
The corresponding test is fixed now.
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Less code, same results, without sacrificing readability.
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Use the mail subject line for creating a descriptive filename for the wash
generated inline patch fake parts. The names are similar to the ones
created by 'git format-patch'.
If the user has notmuch-wash-convert-inline-patch-to-part hook enabled in
notmuch-show-insert-text/plain-hook, this will change the old default
filename of "inline patch" in fake parts:
[ inline patch: inline patch (as text/x-diff) ]
into, for example:
[ 0002-emacs-create-patch-filename-from-subject-for-inline.patch: inline patch (as text/x-diff) ]
which is typically the same filename the sender had if he was using 'git
format-patch' and 'git send-email'.
Signed-off-by: Jani Nikula <jani@nikula.org>
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Add wash generated inline patch fake parts through a special
"inline-patch-fake-part" handler to distinguish them from real MIME
parts. The fake parts are described as "inline patch (as text/x-diff)".
Signed-off-by: Jani Nikula <jani@nikula.org>
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Various typo fixes in documentation within the code that can be made
available to the user, (emacs function help strings, "notmuch help"
output, notmuch man page, etc.).
Signed-off-by: Pieter Praet <pieter@praet.org>
Edited-by: Carl Worth <cworth@cworth.org> Restricted to just
documentation and fixed fix of "comman" to "common" rather than
"command".
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Before the patch, message, headers and hidden citation overlays
had zero priority. All these overlay have `invisible' property.
Emacs documentation says that we should not make assumptions
about which overlay will prevail when they have the same priority
[1]. It happens to work as we need, but we should not rely on
undocumented behavior.
[1] http://www.gnu.org/s/emacs/manual/html_node/elisp/Overlay-Properties.html
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Before the change, message and citation invisibility overlays
conflicted: if some citation is made visible and then the whole
message is hidden, that citation remained visible. This happened
because the citation's overlay has an invisible property which
takes priority over the message overlay. The message
invisibility spec does not affect citation visibility, it is
determined solely by the citation overlay invisibility spec.
Hence, if citation is made visible, it is not hidden by message
invisibility spec.
The patch changes citation overlay invisibility property to be a
list which contains both the citation and the message
invisibility specs. This makes the citation invisible if either
of them is added to the `buffer-invisibility-spec'. Note that
all citation visibility states are "restored" when the message
hidden and shown again.
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Before the change, the `notmuch-show-insert-text/plain-hook' was
given only the `depth' argument. The patch adds another one -
the message. Currently, the new message argument is not used by
any on the hooks. But it will be used later to get access to
message invisibility specs when wash buttons are inserted.
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The emacs bug is that isearch cannot search through invisible text
when the 'invisible' property is a list.
The patch adds `notmuch-isearch-range-invisible' function which
is the same as `isearch-range-invisible' but with fixed Emacs bug
#8721. Advice added for `isearch-range-invisible' which calls
`notmuch-isearch-range-invisible' instead of the original
`isearch-range-invisible' when in `notmuch-show-mode'.
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This code treats top posted copies essentially like signatures, except
that it doesn't sanity check their length, since neither do their
senders.
New user-visible variables:
notmuch-wash-button-original-hidden-format
notmuch-wash-button-original-visible-format
Rebased-by: Carl Worth <cworth@cworth.org>
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(describe-face 'message-cited-text-face)
> message-cited-text-face is an alias for the face `message-cited-text'.
> This face is obsolete since 22.1; use `message-cited-text' instead.
Signed-off-by: Pieter Praet <pieter@praet.org>
Signed-off-by: Jameson Graef Rollins <jrollins@finestructure.net>
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Before the change, save-excursion was used to save the point. But the
marker saved by save-excursion was inside a region that was deleted,
so that approach is unreliable, (leading to point jumping to a new
position past the button). This patch instead saves point in an
integer variable, and when restoring, carefully avoids moving point
past the button, (in case the new button label is shorter than the old
button label).
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Before the change, citation and signature wash buttons used the
same label in both visible and hidden states. Sometimes it is
very convenient when you can determine if the text is hidden or
shown without reading the context and/or clicking the button.
The patch makes it easy to see if the text is shown or hidden by
explicitly saying what the button does (shows or hides the text).
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The removed expressions, which were used to ensure that citations were
both preceded and followed by a blank line, were poorly implemented
and caused a regexp stack overflow on messages more than a few
thousand lines long.
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Add:
- Insert a blank line before a citation if there isn't one,
- Insert a blank line after a citation if there isn't one.
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Someday I'll stop pushing patches without at least compile-testing them.
*sigh*
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Detect inline patches and convert them to fake attachments, in order
that `diff-mode' highlighting can be applied to the patch. This can be
enabled by customising `notmuch-show-insert-text/plain-hook'.
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Add:
- notmuch-wash-wrap-long-lines: Wrap lines longer than the width of
the current window whilst maintaining any citation prefix.
- notmuch-wash-tidy-citations: Tidy up citations by:
- compress repeated otherwise blank citation lines,
- remove otherwise blank citation lines at the head and tail of a
citation,
- notmuch-wash-elide-blank-lines: Compress repeated blank lines and
remove leading and trailing blank lines.
None of these is enabled by default - add them to
`notmuch-show-insert-text/plain-hook' to use.
Reviewed-by: Carl Worth <cworth@cworth.org>: I previously committed a
stale version of this patch.
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This reverts commit 97570954cb583cacac35b0235cbe449a07630ae3.
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Add:
- notmuch-wash-wrap-long-lines: Wrap lines longer than the width of
the current window whilst maintaining any citation prefix.
- notmuch-wash-tidy-citations: Tidy up citations by:
- compress repeated otherwise blank citation lines,
- remove otherwise blank citation lines at the head and tail of a
citation and remove blank lines between attribution statements and
the citation,
- notmuch-wash-compress-blanks: Compress repeated blank lines and
remove leading and trailing blank lines.
Enable `notmuch-wash-tidy-citations' and
`notmuch-wash-compress-blanks' by default by adding them to
`notmuch-show-insert-text/plain-hook'. `notmuch-wash-wrap-long-lines'
is not enabled by default.
If `notmuch-wash-wrap-long-lines' is enabled, word wrapping of the
buffer leads to an unappealing display of text, so provide a function
to disable it and add it to the list of `notmuch-show-mode' hook
functions.
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Add an `isearch-open-invisible' property to the overlays used to hide
citations and signatures, together with an appropriate function to
leave the invisible text visible should that be required.
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Move the citation and signature markup for text/plain parts to a new
file (notmuch-wash.el) and call it using a hook mechanism rather than
directly.
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