`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.
In practice this probably does not make a difference or we would
have heard about it many times, but better be safe than sorry.
Process sentinels are called not only when the process has finished
but also on other state changes.
When running "notmuch" we use its full path but when displaying the
command to the user we show just its name for readability reasons.
Avoid passing around both representations because it is very easy
to get the name from the path.
Notmuch itself uses the involved functions just for "notmuch" but
there might be extensions that use them for other executable so we
forgo other potential simplifications.
The buffer of the error process is accessible using `process-buffer'.
We still have to store the error-buffer in the non-error process
because for that process `process-buffer' obviously returns its own
buffer.
We no longer support Emacs releases before version 25.1.
Also adjust the sentinels which only had to deal with
an error file when using an older Emacs release was used.
These functions are used as action/notify functions. That dictates
the appropriate function signatures but even though these functions
are not used for anything else they use incompatible signatures,
forcing the callers to use lambda expressions to deal with these
incompatibilities.
Fix that by adjusting the function signatures to the needs of the
only intended callers.
Two of these functions were defined as commands but because the
interactive form did not return the mandatory arguments, we know
that nobody (successfully) used these as commands.
In one case we move the location of a y-or-n-p prompt.
This reverts commit f9fbd1ee3b.
Emacs provides a mechanism for avoiding wiping out buffer-local
variables: marking them as "permanent local", which essentially
means "don't wip out the local value when enabling major-mode".
(put 'the-variable 'permanent-local t)
See (info "(elisp)Creating Buffer-Local").
Whether refreshing the buffer contents should involve re-enable the
mode is a different question, which should not be decided based on
the fact that we want keep the value of some random variable, not
least because some other (e.g. cache) variables are likely expected
to be wiped.
One should never bind unnamed commands in keymaps because doing that
makes it needlessly hard for users to change these bindings.
Replace such anonymous bindings with named commands that are generated
using macros and some boilerplate. Using macros is better than using a
simple loop because that makes it possible for `find-function' to find
the definitions. Eat your boilerplate--it forms character.
Admittedly this approach is quite ugly and it might be better to teach
the original commands to support different buffers directly instead of
requiring wrapper commands to do just that.
Never-the-less as a short-term solution this is better than what we
had before.
Inline a simplified version of `notmuch-documentation-first-line'
into its only caller. The new code snippet differs from the
removed function in that it returns nil instead of the empty string
for symbols that have no function documentation. That value is
ultimately used as an argument to `concat', which treats nil like
the empty string. So we can do the logical thing without changing
the behavior.
Since [1: f8bdba37] no key is bound to this command and it is
redundant because the behavior of `push-command' is identical
when called as a command.
1: f8bdba37d3
emacs: tree: remove binding for pressing button in message pane
We could just have switched to using `cl-remove-if-not' instead,
but the two uses of the *remove-if-not function are pretty strange
to begin with so we refactor to not use any such function at all.
The first sentence should fit on the first line. It is okay if
the first sentence/line does not contain all the information that
the rest of the doc-string covers.
Previously it was defined in "notmuch-hello.el" and its name contained
"hello" solely because it replaced an anonymous function that was
mistakenly only bound in `notmuch-hello-mode-map'. But it makes more
sense to bind it in all notmuch modes and even if we did not change
that aspect it still would make no sense to have "hello" in its name.
Notmuch requires at least version 25 of Emacs now.
Adjust comments that previously referenced version 24 specifically,
even though they also apply to later releases. Remove documentation
and code that no longer applies.
- `mm-shr' no longer references `gnus-inhibit-images'.
This fixes a regression introduced in [1: 7e20d264]. If the argument
RETURN-ACTION was non-nil then we should pass along the value of that
argument. Instead we passed along the constant symbol `return-action'.
1: 7e20d26480
emacs: Fix mail composition under Emacs 23
Key bindings should not be defined at the top-level but inside
a `defvar' form. Doing it at the top-level makes it harder to
reliably customize key bindings.
With text-quoting-style 'grave keeps "'" and "`" quotes unaltered
for further processing done by this code (regardless of locale...).
The tools that read the reStructuredText markup generated can do
their styling instead.
Added temporary conversions of ' and ` to \001 and \002 so that
's and `s outside of `...' and `...` are converted separately
('s restored back to ' and `s converted to \`).
Both `...' and `...` are finally "converted" to `...` (not ``...``).
https://docutils.sourceforge.io/docs/user/rst/quickref.html documents
that as `interpreted text`:
"The rendering and meaning of interpreted text is domain- or
application-dependent. It can be used for things like index
entries or explicit descriptive markup (like program identifiers)."
Which looks pretty much right.
Currently `message-send-hook` functions are being called twice: In
notmuch send common when `notmuch-mua-send-hook` functions are
run (which by default includes `notmuch-mua-message-send-hook`) and in
`message-send` itself.
Because `message-send-hook` functions are run in `message-send` itself,
we don't need also need to run them before we delegate to `message-send`
Calling `notmuch-mua-message-send-hook` resulted in functions in
`message-send-hook` to be called twice. This causes bugs in
non-idempotent hook functions.
Emacs face definition forms are either
((DISPLAY . PLIST)
(DISPLAY . PLIST))
or
((DISPLAY PLIST) ;For backward compatibility.
(DISPLAY PLIST))
Commit a2388bc56e (2020-08-08) follows
neither of the correct formats. It defines:
`((((class color) (background light))
,@(and (>= emacs-major-version 27) '(:extend t))
(:background "#f0f0f0"))
(((class color) (background dark))
,@(and (>= emacs-major-version 27) '(:extend t))
(:background "#303030")))
which produces:
((DISPLAY
:extend t (:background "#f0f0f0"))
(DISPLAY
:extend t (:background "#303030")))
And that is wrong format.
This change fixes the face definition form to produce:
((DISPLAY
:extend t :background "#f0f0f0")
(DISPLAY
:extend t :background "#303030"))
which follows the (DISPLAY . PLIST) format (see above).
This means that notmuch commands obey display-buffer-alist so the user
can customize how buffers show up.
It also permits the use of C-x 4 4, C-x 5 5 and C-x t t, available in
Emacs 28. For example, one can use C-x 4 4 M-x notmuch-jump-search RET
to open a saved search in another window rather than the current window.
Or in notmuch-search mode, C-x 5 5 RET to view the message at point in
a new frame.
notmuch-tree has custom buffer display logic, so bind
display-buffer-overriding-action to make pop-to-buffer-same-window
behave exactly as switch-to-buffer while that function is running.
Now that notmuch-tree-next-thread acts more like its notmuch-show
counterpart, let's update the binding to move to the next thread after
archiving.
Signed-off-by: William Casarin <jb55@jb55.com>
This introduces a new function called
notmuch-tree-next-thread-from-search which is analogous to
notmuch-show-next-thread. It will switch to the next or previous
thread from the parent search results.
We rename notmuch-tree-{prev,next}-thread to a more descriptive
notmuch-tree-{prev,next}-thread-in-tree to reflect the fact that it
only moves to the next thread in the current tree.
notmuch-tree-next-thread now switches to the next thread in the
current tree first, but if there are none, it looks for the next tree
in the search results.
This makes notmuch-tree feel more like notmuch-show when using the
M-Enter, M-n and M-p bindings.
Signed-off-by: William Casarin <jb55@jb55.com>
This variable will be used in a similar fashion to
notmuch-show-parent-buffer. It will be used to navigate between
threads from the parent search buffer.
Signed-off-by: William Casarin <jb55@jb55.com>
Previously in message-show mode message's first header line (From
header) was always indented, even if user had turned thread
indentation off with "<" (notmuch-show-toggle-thread-indentation)
command.
This change modifies notmuch-show-insert-headerline function so that
it doesn't indent the first header line if notmuch-show-indent-content
variable is nil.
This change also modifies tests so that they expect this new output
format:
test/emacs-show.expected-output/notmuch-show-indent-thread-content-off
Doing that is better than using an `autoload' form because the latter
may result in dependencies getting hidden and indeed it turns out we
have to declare `notmuch-jump' in "notmuch-tag.el".
This function is being autoloaded using an autoload cookie, so it
shouldn't additionally be autoloaded using an `autoload' form.
When building libraries we don't actually load the autoloads file and
dropping the `autoload' form results in an error, which reveals a so
far unspecified dependency: `notmuch-tree' needs `notmuch-jump'.
Before this commit compiling (or even just loading) `notmuch-tree'
resulted in `notmuch-jump' being loaded because the former requires
`notmuch-lib', which autoloaded `notmuch-jump-search'.
The bug was that this dependency was not explicitly specified, which
we fix by adding the respective `require' form.
- The first sentence should fit on the first line in full. This is
even the case when that causes the line to get a bit long. If it
gets very long, then it should be made shorter.
- Even even the second sentence would fit on the first line, if it
just provides some details, then it shouldn't be done.
- Symbols are quoted like `so'.
- There is no clear rule on how to (not) quote non-atomic
s-expressions, but quoting like '(this) is definitely weird.
- It is a good idea to remember that \" becomes " and to take
that in mind when adjusting the automatic filling by hand.
- Use the imperative form.
- Arguments are written in all uppercase.
Use `makefile-gmake-mode' instead of `makefile-mode' because the
former also highlights ifdef et al. while the latter does not.
"./Makefile.global" and one "Makefile.local" failed to specify any
major mode at all but doing so is necessary because Emacs does not
automatically figure out that these are Makefiles (of any flavor).
Since Emacs 27 each face has to be explicitly configured to "extend
to the edge of the window". Without doing that the face used for
the newline character only has an effect that spans "one character"
(i.e. it looks like there is a single trailing space character).
We don't want that so extend the face in Emacs 27, so that it looks
the same as it did in older Emacs releases. We have to do this
conditionally, otherwise older Emacsen would choke on it.
It's a bit weird to avoid having to write the "(setq ... )" more than
once, just because we can. In a language that uses '=' for the same
purpose we also happily use that once per assignment.
While there are no benefit to using just one 'setq' there are some
drawbacks. It is not always clear on first what is a key and what a
value and as a result it is easy to make a mistake. Also it becomes
harder to comment out just one assignment.
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.
In notmuch-show buffer insert invisible U+200E LEFT-TO-RIGHT MARK
character at the beginning of message header paragraph if the From
header contains a right-to-left character. This ensures that the
header paragraph is always rendered in left-to-right mode.
See Emacs Lisp reference manual section "(elisp) Bidirectional
Display" for more info.
Fixed emacs docstrings to be consistent. No functional change.
- removed some (accidental) indentation
- removed some trailing newlines
- added trailing periods where missing (some exclusions)
Before this change, `load-prefer-newer' was ignored.
Set NOERROR and MUST-SUFFIX arguments of `load' to t, and NOSUFFIX
argument to nil, to preserve the behaviour of the deleted `let' form.
Starting with Emacs 27 the old `cl' implementation is finally
considered obsolete. Previously its use was strongly discouraged
at run-time but one was still allowed to use it at compile-time.
For the most part the transition is very simple and boils down to
adding the "cl-" prefix to some symbols. A few replacements do not
follow that simple pattern; e.g. `first' is replaced with `car',
even though the alias `cl-first' exists, because the latter is not
idiomatic emacs-lisp.
In a few cases we start using `pcase-let' or `pcase-lambda' instead
of renaming e.g. `first' to `car'. That way we can remind the reader
of the meaning of the various parts of the data that is being
deconstructed.
An obsolete `lexical-let' and a `lexical-let*' are replaced with their
regular variants `let' and `let*' even though we do not at the same
time enable `lexical-binding' for that file. That is the right thing
to do because it does not actually make a difference in those cases
whether lexical bindings are used or not, and because this should be
enabled in a separate commit.
We need to explicitly depend on the `cl-lib' package because Emacs
24.1 and 24.2 lack that library. When using these releases we end
up using the backport from GNU Elpa.
We need to explicitly require the `pcase' library because
`pcase-dolist' was not autoloaded until Emacs 25.1.
This is the non-deprecated way to use completing-read. Additionally
the old use was broken when using ivy for completing-read. For user's
using completing-read-default they won't see the default URL now, but
if they hit enter it will be visited. Alternatively they can select
it with M-n.
From the completing-read documentation for initial-input:
This feature is deprecated--it is best to pass nil for INITIAL-INPUT
and supply the default value DEF instead. The user can yank the
default value into the minibuffer easily using M-n.
Additionally collection is now all urls, rather than all but the
first. I'm not sure why "(cdr urls)" was previously done.
This is like notmuch-search-filter-by-tag, but creates a new search
rather than filtering the current search. We add this to
notmuch-common-keymap since this can be used by many contexts. We bind
to the key "t", which is the same key used by
notmuch-search-filter-by-tag in notmuch-search-mode-map. This is done
intentionally since the keybinding for notmuch-search-mode-map can be
seen as a specialization of creating a new search.
This change was motivated for use in "notmuch-hello". It is a more
convenient way to search a tag than expanding the list of all tags. I
also noticed many saved searches people use are simply tags.
Add x and X binds to notmuch-tree for functionally that we have in
notmuch-show.
The notmuch-tree-quit binding is somewhat redundant, since it is
handled by notmuch-bury-or-kill-this-buffer which is bound to q.
Signed-off-by: William Casarin <jb55@jb55.com>
This functions removes some duplicate logic between
notmuch-tree-{next,prev}-matching-message
We do this because we will be adding some additional logic similar to
the notmuch-show-next-open-message function, and it will help if this
logic is all in one place.
Signed-off-by: William Casarin <jb55@jb55.com>
This function captures some common logic when jumping to matching
messages in notmuch-tree mode.
We also add a new return value (t or nil), that indicates if there was
a next matching message in the thread to show.
Signed-off-by: William Casarin <jb55@jb55.com>
Without this change, we see the following warning when compiling the
elisp:
```
EMACS emacs/notmuch-crypto.elc
In end of data:
emacs/notmuch-crypto.el:266:1:Warning: the function
‘notmuch-show-get-message-id’ is not known to be defined.
```
Thanks to Örjan Ekeberg and David Edmondson for their followup about
this.
Signed-off-by: Daniel Kahn Gillmor <dkg@fifthhorseman.net>
Saved searches in notmuch-hello and notmuch-jump can specify whether
to use search mode or tree mode. This adds an option for them to
specify unthreaded mode.
We have shortcuts S and Z to let the user switch to Search view and
Tree view with the current search. Add U to let the user switch to
unthreaded view from the current search, and ensure that S and Z
switch from unthreaded to search and tree veiew respectively.
Tree mode allows the user to choose whether to use the split screen
displaying just the current message or a full screen displaying the
entire thread. As unthreaded mode is quite different in use the user
may want a different customisation for this mode.
It is likely that the user will want a different line format for
unthreaded mode from tree mode; in particular the thread structure
graphics are unnecessary in unthreaded mode.
Add a new customisable variable and set it to something sensible.
This commit introduces a new 'unthreaded' search mode where each
matching message is shown on a separate line. It shares almost all of
its code with tree view. Subsequent commits will allow it to diverge
slightly in appearance.
It causes this function to fail with:
let: Wrong type argument: null, t
Support for this was removed from Emacs in April
2019 (5c5e309527e6b582e2c04b83e7af45f3144863ac) because it never
worked correctly (apparently).
This also shouldn't be necessary as sentinels will not be called
unless emacs is idle or waiting for input. Therefore, the
`process-put' calls immediately following the `make-process' call
should always complete before the sentinel is first called.
This commit changes the behaviour of notmuch-mua-attachment-check
so that it stops searching for notmuch-mua-attachment-regexp when a
new mime-part is reached. This avoids false warnings when matching
words occur inside forwarded messages.
Rather than blocking emacs while gpg does its' thing, by default run
key retrieval asynchronously, possibly updating the display of the
message on successful completion.
This is an unbound function that is quite useful. It opens a selected
thread in notmuch-tree from the current search query.
Signed-off-by: William Casarin <jb55@jb55.com>
Debian's lintian has an informational alert
desktop-entry-lacks-keywords-entry, which recommends including
Keywords= in a .desktop file.
I dug around a bit in /usr/share/applications/*.desktop to make sure
that we covered the range of keywords other e-mail applications are
using. If anyone has other suggestions for keywords, they can add
them to this list.
Signed-off-by: Daniel Kahn Gillmor <dkg@fifthhorseman.net>
The extra flexibility of having both HAVE_EMACS (for yes, there is an
emacs we can use) and WITH_EMACS (the user wants emacs support) lead
to confusion and bugs. We now just force WITH_EMACS to 0 if no
suitable emacs is detected.
When we have not been able to evaluate the signature status of a given
MIME part, showing a content-free (and interaction-free) "[ Unknown
signature status ]" button doesn't really help the user at all, and
takes up valuable screen real-estate.
A visual reminder that a given message is *not* signed isn't helpful
unless it is always present, in which case we'd want to see "[ Unknown
signature status ]" buttons on all messages, even ones that don't have
a signing structure, but i don't think we want that.
Amended by db to drop the unused initialization of 'label'
`notmuch-search-interactive-region' was moved to notmuch-lib.el in
f3cba19f88 and renamed to
`notmuch-interactive-region' without making the old function
obsolete, thereby breaking user-commands which made use of it.
This commit marks the function as obsolete and makes it an alias for
the new function.
Apparently, message-default-charset is deprecated, which causes the
following warning messages during the build:
In notmuch-maildir-setup-message-for-saving:
emacs/notmuch-maildir-fcc.el:172:31:Warning: ‘message-default-charset’ is an
obsolete variable (as of 26.1); The default charset comes from the
language environment
In discussion with emacs upstream over on
https://debbugs.gnu.org/35370, it appears that we can just drop this
entirely and things should still work with emacs 25.
Since only the first line of the documentation is shown by the
help command, it is confusing when "x" and "a" seem to have the same
binding in show-mode. This commit makes the two function documentations
first lines different and (hopefully) clearer.
Instead of relying on the "In-Reply-To" header, use a buffer-local variable,
notmuch-message-queued-tag-changes, to add and remove tags to affected
messages when the message-send-hook is triggered.
Include the message-id of forwarded messages in the new message.
This ensures that the new (forwarding) message is linked to the
same thread as the message being forwarded.
Fix notmuch-describe-key crashing for the following two cases
1. format-kbd-macro cannot deal with keys like [(32 . 126)], switch to
use key-description instead.
2. if a function in the current keymap is not bounded, it will crash
the whole process. We check if it is bounded and silently skip it to
avoid crashing.
Query the user if the message text indicates that an attachment is
expected but no MML referencing an attachment is found.
This is not enabled by default - see the documentation for
`notmuch-mua-attachment-check'.
Add a new binding when looking at messages, B, that prompts with a
list of URLs found in the current message, if any. Open the one that
is selected in a browser.
amended by db: s/--browse-urls/-browse-urls/
When invoking gpg as a backgrounded tool, it's important to let gpg
know that it is backgrounded, to avoid spurious prompts or other
breakage.
In particular, https://bugs.debian.org/913614 was a regression in
GnuPG which causes problems when importing keys without a terminal,
but gpg expects one.
Ensuring that notmuch-emacs always invokes gpg as a background process
should avoid some of these unnecessary failure.
Thanks to Justus Winter for finding this problem.
Signed-off-by: Daniel Kahn Gillmor <dkg@fifthhorseman.net>
These are intended to included in the sphinx manual for notmuch-emacs.
The stamp file makes it easier to depend on the docstrings from other
parts of the build
This small library is intended to support batch extraction of Emacs
Lisp docstrings from source files. Clients will need to include (or
replace) rstdoc.rsti.
When filtering by tags in notmuch-search-filter-by-tag, only return tags
related to the current query.
Before, it was returning all tags. There's no reason to refine the
current query with tags that don't exist in the current result set.
Signed-off-by: William Casarin <jb55@jb55.com>
`mm-inline-text-html-with-images' was removed from mm-decode.el in
2016 and replaced with `mm-html-inhibit-images'.
`gnus-select-frame-set-input-focus' was removed from gnus-util.el in
2016 and existed only for XEmacs compatibility.
On some platforms (e.g. macOS), it is necessary to add a real sentinel
process for the error buffer used by `notmuch-start-notmuch' rather
than a no-op sentinel.
Correct URLs that have crept into the notmuch codebase with http://
when https:// is possible.
As part of this conversion, this changeset also indicates the current
preferred upstream URLs for both gmime and sup. the new URLs are
https-enabled, the old ones are not.
This also fixes T310-emacs.sh, thanks to Bremner for catching it.
This brings the --decrypt argument to "notmuch reply" into line with
the other --decrypt arguments (in "show", "new", "insert", and
"reindex"). This patch is really just about bringing consistency to
the user interface.
We also use the recommended form in the emacs MUA when replying, and
update test T350 to match.
We also expand tab completion for it, update the emacs bindings, and
update T350, T357, and T450 to match.
Make use of the bool-to-keyword backward-compatibility feature.
Dynamically bind enriched-decode-display-prop when inserting
text/enriched part. This complements commit 9b05823838 for
emacs versions before 24.4 which do not have advice-add
functionality.
Since emacs 25.3 this particular bug is fixed.
Commit a7964c86d1 ("emacs: Sanitize authors and subjects in search
and show") added sanitization of header information for display. Do
the same for reply subjects.
This fixes the long-standing annoying artefact of certain versions of
mailman using tab as folding whitespace, leading to tabs in reply
subjects.
Quoting from the elisp reference:
For other types (e.g., lists, vectors, strings), two arguments
with the same contents or elements are not necessarily ‘eq’ to
each other.
Thanks to "Attic Hermit" for the fix.
Switch to a local version of enriched-decode-display-prop if we
encounter a text/enriched part. This is to mitigate
https://bugs.gnu.org/28350. Normally it would be prudent to remove the
override afterwards, but in this case just leave it in.
Notes from db:
This doesn't disable text/enriched, just one feature of it.
notmuch-tree did not protect against concurrent refreshes like
notmuch-search, meaning, hitting '=' (notmuch-refresh-this-buffer)
quickly will spawn multiple parallel notmuch processes, and clobber
the existing results in the current buffer.
* notmuch-tree.el: Add a guard to notmuch-tree-refresh-view similar to
the one in notmuch-search.
make-process is a new function introduced in Emacs 25, which provides
greater control over process creation. Crucially, it allows
separately redirecting stderr directly to a buffer, which allows us to
avoid needing to use the shell to redirect to a temporary file in
order to correctly distinguish stdout and stderr.
* notmuch-lib.el: Use make-process when it is available; fall back to
the previous method when not.
Load subprocess error output to a string in the callers, and propagate
the error messages as a string parameter instead of a path to file
names.
Required to be able to avoid using temporary files for subprocess
error output.
* notmuch-lib.el: Update notmuch-check-async-exit-status,
notmuch-check-exit-status: accept an err parameter instead of
err-file; shift the responsibility of loading error messages from
files up the call stack.
The queries "" and "*" are special cased in the notmuch library to
match all messages, but only if they're the entire query. They can't
be combined with other queries, such as "* AND foo", in which case
they "leak" down to the Xapian query parser.
Notmuch show and tree buffers inadvertently combine the thread query
with said special queries, causing incorrect collapsing of
messages. Handle the special queries specially. We already do a
similar thing in notmuch-search-filter.
A leading / in paths in a .gitignore file matches the beginning of the
path, meaning that for patterns without slashes, git will match files
only in the current directory as opposed to in any subdirectory.
Prefix relevant paths with / in .gitignore files, to prevent
accidentally ignoring files in subdirectories and possibly slightly
improve the performance of "git status".
