The @command{grep} commands will offer to save buffers before
running. This is controlled by the @code{grep-save-buffers} variable.
The possible values are either @code{nil} (don't save), @code{ask}
-(ask before saving), a function which will be used as a predicate (and
-is called with the file name as the parameter and should return
-non-nil if the buffer is to be saved), and any other non-@code{nil}
-value means that all buffers should be saved without asking.
+(ask before saving), or a function which will be used as a predicate
+(and is called with the file name as the parameter and should return
+non-@code{nil} if the buffer is to be saved). Any other
+non-@code{nil} value means that all buffers should be saved without
+asking.
@findex grep-find
@findex find-grep
grouping or end string-delimiter keeps point at the end of the region
by default, so the beginning of the region will not be visible if it
is above the top of the window; setting the user option
-@code{mouse-select-region-move-to-beginning} to non-nil changes this
-to move point to the beginning of the region, scrolling the display
-backward if necessary.
+@code{mouse-select-region-move-to-beginning} to non-@code{nil} changes
+this to move point to the beginning of the region, scrolling the
+display backward if necessary.
@item Double-Drag-mouse-1
Select the text you drag across, in the form of whole words.
conventions of the application it came from) into the directory
displayed in that buffer.
-@vindex mouse-drag-and-drop-region
- Emacs can also optionally drag the region of text by mouse into
-another portion of this or another buffer. To enable that, customize
-the variable @code{mouse-drag-and-drop-region} to a non-nil value.
-Normally, the text is moved, i.e. cut and pasted, when the destination
-is the same buffer as the origin; dropping the region on another
-buffer copies the text instead. If the value of this variable names a
-modifier key, such as @samp{shift} or @samp{control} or @samp{alt},
-then pressing that modifier key when dropping the text will copy it
-instead of cutting it, even if you drop on the same buffer as the one
-from which the text came.
-
@vindex dnd-open-file-other-window
Dropping a file normally visits it in the window you drop it on. If
you prefer to visit the file in a new window in such cases, customize
The XDND and Motif drag and drop protocols, and the old KDE 1.x
protocol, are currently supported.
+@vindex mouse-drag-and-drop-region
+ Emacs can also optionally drag the region with the mouse into
+another portion of this or another buffer. To enable that, customize
+the variable @code{mouse-drag-and-drop-region} to a non-@code{nil}
+value. Normally, the text is moved, i.e. cut and pasted, when the
+destination is the same buffer as the origin; dropping the region on
+another buffer copies the text instead. If the value of this variable
+names a modifier key, such as @samp{shift}, @samp{control} or
+@samp{alt}, then pressing that modifier key when dropping the text
+will copy it instead of cutting it, even if you drop on the same
+buffer as the one from which the text came.
+
+
@node Menu Bars
@section Menu Bars
@cindex Menu Bar mode
searches. The text that matched is highlighted using the @code{match}
face. A numeric argument @var{n} specifies that @var{n} lines of
context are to be displayed before and after each matching line.
+
The default number of context lines is specified by the variable
-@code{list-matching-lines-default-context-lines}.
-When @code{list-matching-lines-jump-to-current-line} is non-nil,
-the current line is shown highlighted with face
-@code{list-matching-lines-current-line-face} and the point is set
-at the first match after such line.
+@code{list-matching-lines-default-context-lines}. When
+@code{list-matching-lines-jump-to-current-line} is non-@code{nil} the
+current line is shown highlighted with face
+@code{list-matching-lines-current-line-face} and the point is set at
+the first match after such line.
You can also run @kbd{M-s o} when an incremental search is active;
this uses the current search string.
recorded in a buffer called @file{*Compile-Log*}, which uses
Compilation mode. @xref{Compilation Mode,,,emacs, The GNU Emacs
Manual}. However, if the variable @code{byte-compile-debug} is
-non-nil, error message will be signaled as Lisp errors instead
+non-@code{nil}, error messages will be signaled as Lisp errors instead
(@pxref{Errors}).
@cindex macro compilation
@code{file-name-as-directory}.
To avoid the issues mentioned above, or if the @var{dirname} value
-might be nil (for example, from an element of @code{load-path}), use:
+might be @code{nil} (for example, from an element of @code{load-path}),
+use:
@example
(expand-file-name @var{relfile} @var{dirname})
@defmac define-advice symbol (where lambda-list &optional name depth) &rest body
This macro defines a piece of advice and adds it to the function named
@var{symbol}. The advice is an anonymous function if @var{name} is
-nil or a function named @code{symbol@@name}. See @code{advice-add}
-for explanation of other arguments.
+@code{nil} or a function named @code{symbol@@name}. See
+@code{advice-add} for explanation of other arguments.
@end defmac
@defun advice-add symbol where function &optional props
while @var{keymap} is active; it should return non-@code{nil} if
@var{keymap} should stay active.
-The optional argument @var{on-exit}, if non-nil, specifies a function
-that is called, with no arguments, after @var{keymap} is deactivated.
+The optional argument @var{on-exit}, if non-@code{nil}, specifies a
+function that is called, with no arguments, after @var{keymap} is
+deactivated.
This function works by adding and removing @var{keymap} from the
variable @code{overriding-terminal-local-map}, which takes precedence
@defun assoc key alist &optional testfn
This function returns the first association for @var{key} in
@var{alist}, comparing @var{key} against the alist elements using
-@var{testfn} if non-nil, or @code{equal} if nil (@pxref{Equality
-Predicates}). It returns @code{nil} if no association in @var{alist}
-has a @sc{car} equal to @var{key}. For example:
+@var{testfn} if it is non-@code{nil} and @code{equal} otherwise
+(@pxref{Equality Predicates}). It returns @code{nil} if no
+association in @var{alist} has a @sc{car} equal to @var{key}. For
+example:
@smallexample
(setq trees '((pine . cones) (oak . acorns) (maple . seeds)))
optional argument @var{window} must be a live window and defaults to
the selected one. The function's behavior is determined by the four
elements of the @code{quit-restore} window parameter (@pxref{Window
-Parameters}), which is set to nil afterwards.
+Parameters}), which is set to @code{nil} afterwards.
The window is deleted entirely if: 1) the first element of the
@code{quit-restore} parameter is one of 'window or 'frame, 2) the
@end group
@end example
-Setting the window history to nil ensures that a future call to
+Setting the window history to @code{nil} ensures that a future call to
@code{quit-window} can delete the window altogether.
@end defun
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