+2009-05-21 Martin Rudalics <rudalics@gmx.at>
+
+ * abbrevs.texi (Abbrev Mode): abbrev-mode is an option.
+
+ * backups.texi (Making Backups): backup-directory-alist and
+ make-backup-file-name-function are options.
+ (Auto-Saving): auto-save-list-file-prefix is an option.
+
+ * buffers.texi (Killing Buffers): buffer-offer-save is an
+ option.
+
+ * display.texi (Refresh Screen): no-redraw-on-reenter is an
+ option.
+ (Echo Area Customization): echo-keystrokes is an option.
+ (Selective Display): selective-display-ellipses is an option.
+ (Temporary Displays): temp-buffer-show-function is an option.
+ (Face Attributes): underline-minimum-offset and x-bitmap-file-path
+ are options.
+ (Font Selection): face-font-family-alternatives,
+ face-font-selection-order, face-font-registry-alternatives, and
+ scalable-fonts-allowed are options.
+ (Fringe Indicators): indicate-buffer-boundaries is an option.
+ (Fringe Cursors): overflow-newline-into-fringe is an option.
+ (Scroll Bars): scroll-bar-mode is an option.
+
+ * eval.texi (Eval): max-lisp-eval-depth is an option.
+
+ * files.texi (Visiting Functions): find-file-hook is an option.
+ (Directory Names): directory-abbrev-alist is an option.
+ (Unique File Names): temporary-file-directory and
+ small-temporary-file-directory are options.
+
+ * frames.texi (Initial Parameters): initial-frame-alist,
+ minibuffer-frame-alist and default-frame-alist are options.
+ (Cursor Parameters): blink-cursor-alist and
+ cursor-in-non-selected-windows ar options.
+ (Window System Selections): selection-coding-system is an
+ option.
+ (Display Feature Testing): display-mm-dimensions-alist is an
+ option.
+
+ * help.texi (Help Functions): help-char and help-event-list are
+ options.
+
+ * keymaps.texi (Functions for Key Lookup): meta-prefix-char is
+ an option.
+
+ * minibuf.texi (Minibuffer History): history-length and
+ history-delete-duplicates are options.
+ (High-Level Completion): read-buffer-function and
+ read-buffer-completion-ignore-case are options.
+ (Reading File Names): read-file-name-completion-ignore-case is
+ an option.
+
+ * modes.texi (Mode Line Top): mode-line-format is an option.
+ (Mode Line Variables): mode-line-position and mode-line-modes
+ are options.
+
+ * nonascii.texi (Text Representations):
+ enable-multibyte-characters is an option.
+ (Default Coding Systems): auto-coding-regexp-alist,
+ file-coding-system-alist, auto-coding-alist and
+ auto-coding-functions are options.
+ (Specifying Coding Systems): inhibit-eol-conversion is an
+ option.
+
+ * os.texi (Init File): site-run-file is an option.
+ (System Environment): mail-host-address is an option.
+ (User Identification): user-mail-address is an option.
+ (Terminal Output): baud-rate is an option.
+
+ * positions.texi (Word Motion): words-include-escapes is an
+ option.
+
+ * searching.texi (Standard Regexps): page-delimiter,
+ paragraph-separate, paragraph-separate and sentence-end are
+ options.
+
+ * text.texi (Margins): left-margin and fill-nobreak-predicate
+ are options.
+
+ * variables.texi (Local Variables): max-specpdl-size is an
+ option.
+
+ * windows.texi (Choosing Window):
+ split-window-preferred-function, special-display-function and
+ display-buffer-function are options.
+
2009-05-20 Chong Yidong <cyd@stupidchicken.com>
Fix errors spotted by Martin Rudalics.
Abbrev mode is a minor mode controlled by the variable
@code{abbrev-mode}.
-@defvar abbrev-mode
+@defopt abbrev-mode
If this variable is non-@code{nil}, abbrevs are automatically expanded
in the buffer. If the value is @code{nil}, abbrevs may be defined,
but they are not expanded automatically.
This variable automatically becomes buffer-local when set in any fashion.
-@end defvar
+@end defopt
@defvar default-abbrev-mode
This is the value of @code{abbrev-mode} for buffers that do not
@code{make-backup-files} instead.
@end defvar
-@defvar backup-directory-alist
+@defopt backup-directory-alist
This variable's value is an alist of filename patterns and backup
directory names. Each element looks like
@smallexample
On MS-DOS filesystems without long names this variable is always
ignored.
-@end defvar
+@end defopt
-@defvar make-backup-file-name-function
+@defopt make-backup-file-name-function
This variable's value is a function to use for making backups instead
of the default @code{make-backup-file-name}. A value of @code{nil}
gives the default @code{make-backup-file-name} behavior.
This could be buffer-local to do something special for specific
files. If you define it, you may need to change
@code{backup-file-name-p} and @code{file-name-sans-versions} too.
-@end defvar
+@end defopt
@node Rename or Copy
host name.
@end defvar
-@defvar auto-save-list-file-prefix
+@defopt auto-save-list-file-prefix
After Emacs reads your init file, it initializes
@code{auto-save-list-file-name} (if you have not already set it
non-@code{nil}) based on this prefix, adding the host name and process
ID. If you set this to @code{nil} in your init file, then Emacs does
not initialize @code{auto-save-list-file-name}.
-@end defvar
+@end defopt
@node Reverting
@section Reverting
is not cleared by changing major modes.
@end defvar
-@defvar buffer-offer-save
+@defopt buffer-offer-save
This variable, if non-@code{nil} in a particular buffer, tells
@code{save-buffers-kill-emacs} and @code{save-some-buffers} (if the
second optional argument to that function is @code{t}) to offer to
@xref{Definition of save-some-buffers}. The variable
@code{buffer-offer-save} automatically becomes buffer-local when set
for any reason. @xref{Buffer-Local Variables}.
-@end defvar
+@end defopt
@defvar buffer-save-without-query
This variable, if non-@code{nil} in a particular buffer, tells
sequential display. If you are using such a terminal, you might want
to inhibit the redisplay on resumption.
-@defvar no-redraw-on-reenter
+@defopt no-redraw-on-reenter
@cindex suspend (cf. @code{no-redraw-on-reenter})
@cindex resume (cf. @code{no-redraw-on-reenter})
This variable controls whether Emacs redraws the entire screen after it
has been suspended and resumed. Non-@code{nil} means there is no need
to redraw, @code{nil} means redrawing is needed. The default is @code{nil}.
-@end defvar
+@end defopt
@node Forcing Redisplay
@section Forcing Redisplay
@code{(message nil)} or for any other reason.
@end defvar
-@defvar echo-keystrokes
+@defopt echo-keystrokes
This variable determines how much time should elapse before command
characters echo. Its value must be an integer or floating point number,
which specifies the
sequence are echoed immediately.)
If the value is zero, then command input is not echoed.
-@end defvar
+@end defopt
@defvar message-truncate-lines
Normally, displaying a long message resizes the echo area to display
@end example
@end defvar
-@defvar selective-display-ellipses
+@defopt selective-display-ellipses
If this buffer-local variable is non-@code{nil}, then Emacs displays
@samp{@dots{}} at the end of a line that is followed by hidden text.
This example is a continuation of the previous one.
You can use a display table to substitute other text for the ellipsis
(@samp{@dots{}}). @xref{Display Tables}.
-@end defvar
+@end defopt
@node Temporary Displays
@section Temporary Displays
@end example
@end defspec
-@defvar temp-buffer-show-function
+@defopt temp-buffer-show-function
If this variable is non-@code{nil}, @code{with-output-to-temp-buffer}
calls it as a function to do the job of displaying a help buffer. The
function gets one argument, which is the buffer it should display.
just as @code{with-output-to-temp-buffer} normally would, inside of
@code{save-selected-window} and with the chosen window and buffer
selected.
-@end defvar
+@end defopt
@defvar temp-buffer-setup-hook
This normal hook is run by @code{with-output-to-temp-buffer} before
to be displayed; if it is @code{nil}, the selected frame is used.
@end defun
-@defvar underline-minimum-offset
+@defopt underline-minimum-offset
This variable specifies the minimum distance between the baseline and
the underline, in pixels, when displaying underlined text.
-@end defvar
+@end defopt
-@defvar x-bitmap-file-path
+@defopt x-bitmap-file-path
This variable specifies a list of directories for searching
for bitmap files, for the @code{:stipple} attribute.
-@end defvar
+@end defopt
@defun bitmap-spec-p object
This returns @code{t} if @var{object} is a valid bitmap specification,
Emacs looks for the @dfn{closest matching font}. The variables in
this section control how Emacs makes this selection.
-@defvar face-font-family-alternatives
+@defopt face-font-family-alternatives
If a given family is specified but does not exist, this variable
specifies alternative font families to try. Each element should have
this form:
If @var{family} is specified but not available, Emacs will try the other
families given in @var{alternate-families}, one by one, until it finds a
family that does exist.
-@end defvar
+@end defopt
-@defvar face-font-selection-order
+@defopt face-font-selection-order
If there is no font that exactly matches all desired face attributes
(@code{:width}, @code{:height}, @code{:weight}, and @code{:slant}),
this variable specifies the order in which these attributes should be
default one. But if you put @code{:slant} before @code{:height}, the
@code{italic} face will use an italic font, even if its height is not
quite right.
-@end defvar
+@end defopt
-@defvar face-font-registry-alternatives
+@defopt face-font-registry-alternatives
This variable lets you specify alternative font registries to try, if a
given registry is specified and doesn't exist. Each element should have
this form:
If @var{registry} is specified but not available, Emacs will try the
other registries given in @var{alternate-registries}, one by one,
until it finds a registry that does exist.
-@end defvar
+@end defopt
Emacs can make use of scalable fonts, but by default it does not use
them.
-@defvar scalable-fonts-allowed
+@defopt scalable-fonts-allowed
This variable controls which scalable fonts to use. A value of
@code{nil}, the default, means do not use scalable fonts. @code{t}
means to use any scalable font that seems appropriate for the text.
@noindent
allows the use of scalable fonts with registry @code{muleindian-2}.
-@end defvar
+@end defopt
@defvar face-font-rescale-alist
This variable specifies scaling for certain faces. Its value should
buffer-local in every buffer.
@end defopt
-@defvar indicate-buffer-boundaries
+@defopt indicate-buffer-boundaries
This buffer-local variable controls how the buffer boundaries and
window scrolling are indicated in the window fringes.
bitmap in left fringe, and the bottom angle bitmap as well as both
arrow bitmaps in right fringe. To show the angle bitmaps in the left
fringe, and no arrow bitmaps, use @code{((top . left) (bottom . left))}.
-@end defvar
+@end defopt
@defvar default-indicate-buffer-boundaries
The value of this variable is the default value for
normal @code{hollow-rectangle} bitmap is too tall to fit on a specific
display line.
-@defvar overflow-newline-into-fringe
+@defopt overflow-newline-into-fringe
If this is non-@code{nil}, lines exactly as wide as the window (not
counting the final newline character) are not continued. Instead,
when point is at the end of the line, the cursor appears in the right
fringe.
-@end defvar
+@end defopt
@defvar fringe-cursor-alist
This variable specifies the mapping from logical cursor type to the
window take note of the new values by calling @code{set-window-buffer}
specifying the same buffer that is already displayed.
-@defvar scroll-bar-mode
+@defopt scroll-bar-mode
This variable, always local in all buffers, controls whether and where
to put scroll bars in windows displaying the buffer. The possible values
are @code{nil} for no scroll bar, @code{left} to put a scroll bar on
the left, and @code{right} to put a scroll bar on the right.
-@end defvar
+@end defopt
@defun window-current-scroll-bars &optional window
This function reports the scroll bar type for window @var{window}.
@code{eval-current-buffer} is an alias for this command.
@end deffn
-@defvar max-lisp-eval-depth
+@defopt max-lisp-eval-depth
@anchor{Definition of max-lisp-eval-depth}
This variable defines the maximum depth allowed in calls to @code{eval},
@code{apply}, and @code{funcall} before an error is signaled (with error
@code{max-specpdl-size} provides another limit on nesting.
@xref{Definition of max-specpdl-size,, Local Variables}.
-@end defvar
+@end defopt
@defvar values
The value of this variable is a list of the values returned by all the
and never treat wildcard characters specially.
@end defopt
-@defvar find-file-hook
+@defopt find-file-hook
The value of this variable is a list of functions to be called after a
file is visited. The file's local-variables specification (if any) will
have been processed before the hooks are run. The buffer visiting the
file is current when the hook functions are run.
This variable is a normal hook. @xref{Hooks}.
-@end defvar
+@end defopt
@defvar find-file-not-found-functions
The value of this variable is a list of functions to be called when
name as an abbreviation for the ``real'' name, Emacs shows users the
abbreviation instead.
-@defvar directory-abbrev-alist
+@defopt directory-abbrev-alist
The variable @code{directory-abbrev-alist} contains an alist of
abbreviations to use for file directories. Each element has the form
@code{(@var{from} . @var{to})}, and says to replace @var{from} with
("^/home/gp" . "/gp")
("^/home/gd" . "/gd"))
@end example
-@end defvar
+@end defopt
To convert a directory name to its abbreviation, use this
function:
truncate the @var{string} prefix to fit into the 8+3 file-name limits.
@end defun
-@defvar temporary-file-directory
+@defopt temporary-file-directory
@cindex @code{TMPDIR} environment variable
@cindex @code{TMP} environment variable
@cindex @code{TEMP} environment variable
put the file in. However, if you expect the file to be small, you
should use @code{small-temporary-file-directory} first if that is
non-@code{nil}.
-@end defvar
+@end defopt
-@defvar small-temporary-file-directory
+@defopt small-temporary-file-directory
This variable specifies the directory name for
creating certain temporary files, which are likely to be small.
(or small-temporary-file-directory
temporary-file-directory)))
@end example
-@end defvar
+@end defopt
@node File Name Completion
@subsection File Name Completion
You can specify the parameters for the initial startup frame
by setting @code{initial-frame-alist} in your init file (@pxref{Init File}).
-@defvar initial-frame-alist
+@defopt initial-frame-alist
This variable's value is an alist of parameter values used when creating
the initial window frame. You can set this variable to specify the
appearance of the initial frame without altering subsequent frames.
X resources for subsequent frames; then, to prevent these from affecting
the initial frame, specify the same parameters in
@code{initial-frame-alist} with values that match the X resources.
-@end defvar
+@end defopt
If these parameters specify a separate minibuffer-only frame with
@code{(minibuffer . nil)}, and you have not created one, Emacs creates
one for you.
-@defvar minibuffer-frame-alist
+@defopt minibuffer-frame-alist
This variable's value is an alist of parameter values used when
creating an initial minibuffer-only frame. This is the
minibuffer-only frame that Emacs creates if @code{initial-frame-alist}
specifies a frame with no minibuffer.
-@end defvar
+@end defopt
-@defvar default-frame-alist
+@defopt default-frame-alist
This is an alist specifying default values of frame parameters for all
Emacs frames---the first frame, and subsequent frames. When using the X
Window System, you can get the same results by means of X resources
in many cases.
Setting this variable does not affect existing frames.
-@end defvar
+@end defopt
Functions that display a buffer in a separate frame can override the
default parameters by supplying their own parameters. @xref{Definition
the @code{cursor-type} frame parameter, but if it is @code{t}, that
means to use the cursor specified for the frame.
-@defvar blink-cursor-alist
+@defopt blink-cursor-alist
This variable specifies how to blink the cursor. Each element has the
form @code{(@var{on-state} . @var{off-state})}. Whenever the cursor
type equals @var{on-state} (comparing using @code{equal}), the
the type is not mentioned as an @var{on-state} here. Changes in this
variable do not take effect immediately, only when you specify the
@code{cursor-type} frame parameter.
-@end defvar
+@end defopt
-@defvar cursor-in-non-selected-windows
+@defopt cursor-in-non-selected-windows
This variable controls how the cursor looks in a window that is not
selected. It supports the same values as the @code{cursor-type} frame
parameter; also, @code{nil} means don't display a cursor in
nonselected windows, and @code{t} (the default) means use a standard
modificatoin of the usual cursor type (solid box becomes hollow box,
and bar becomes a narrower bar).
-@end defvar
+@end defopt
@node Font and Color Parameters
@subsubsection Font and Color Parameters
the third, and so on through all eight cut buffers.
@end defun
-@defvar selection-coding-system
+@defopt selection-coding-system
This variable specifies the coding system to use when reading and
writing selections or the clipboard. @xref{Coding
Systems}. The default is @code{compound-text-with-extensions}, which
converts to the text representation that X11 normally uses.
-@end defvar
+@end defopt
@cindex clipboard support (for MS-Windows)
When Emacs runs on MS-Windows, it does not implement X selections in
or @code{nil} if Emacs cannot get that information.
@end defun
-@defvar display-mm-dimensions-alist
+@defopt display-mm-dimensions-alist
This variable allows the user to specify the dimensions of graphical
displays returned by @code{display-mm-height} and
@code{display-mm-width} in case the system provides incorrect values.
-@end defvar
+@end defopt
@defun display-backing-store &optional display
This function returns the backing store capability of the display.
@end smallexample
@end deffn
-@defvar help-char
+@defopt help-char
The value of this variable is the help character---the character that
Emacs recognizes as meaning Help. By default, its value is 8, which
stands for @kbd{C-h}. When Emacs reads this character, if
binding as a subcommand of the prefix key, it runs
@code{describe-prefix-bindings}, which displays a list of all the
subcommands of the prefix key.
-@end defvar
+@end defopt
-@defvar help-event-list
+@defopt help-event-list
The value of this variable is a list of event types that serve as
alternative ``help characters.'' These events are handled just like the
event specified by @code{help-char}.
-@end defvar
+@end defopt
@defvar help-form
If this variable is non-@code{nil}, its value is a form to evaluate
bindings, as in @code{lookup-key} (above).
@end defun
-@defvar meta-prefix-char
+@defopt meta-prefix-char
@cindex @key{ESC}
This variable is the meta-prefix character code. It is used for
translating a meta character to a two-character sequence so it can be
This translation of one event into two happens only for characters, not
for other kinds of input events. Thus, @kbd{M-@key{F1}}, a function
key, is not converted into @kbd{@key{ESC} @key{F1}}.
-@end defvar
+@end defopt
@node Changing Key Bindings
@section Changing Key Bindings
set to a non-@code{nil} value.
@end defvar
-@defvar history-length
+@defopt history-length
The value of this variable specifies the maximum length for all
history lists that don't specify their own maximum lengths. If the
value is @code{t}, that means there no maximum (don't delete old
elements). The value of @code{history-length} property of the history
list variable's symbol, if set, overrides this variable for that
particular history list.
-@end defvar
+@end defopt
-@defvar history-delete-duplicates
+@defopt history-delete-duplicates
If the value of this variable is @code{t}, that means when adding a
new history element, all previous identical elements are deleted.
-@end defvar
+@end defopt
Here are some of the standard minibuffer history list variables:
@end example
@end defun
-@defvar read-buffer-function
+@defopt read-buffer-function
This variable specifies how to read buffer names. For example, if you
set this variable to @code{iswitchb-read-buffer}, all Emacs commands
that call @code{read-buffer} to read a buffer name will actually use the
@code{iswitchb} package to read it.
-@end defvar
+@end defopt
-@defvar read-buffer-completion-ignore-case
+@defopt read-buffer-completion-ignore-case
If this variable is non-@code{nil}, @code{read-buffer} ignores case
when performing completion.
-@end defvar
+@end defopt
@defun read-command prompt &optional default
This function reads the name of a command and returns it as a Lisp
doing its usual work.
@end defvar
-@defvar read-file-name-completion-ignore-case
+@defopt read-file-name-completion-ignore-case
If this variable is non-@code{nil}, @code{read-file-name} ignores case
when performing completion.
-@end defvar
+@end defopt
@defun read-directory-name prompt &optional directory default require-match initial
This function is like @code{read-file-name} but allows only directory
The variable in overall control of the mode line is
@code{mode-line-format}.
-@defvar mode-line-format
+@defopt mode-line-format
The value of this variable is a mode-line construct that controls the
contents of the mode-line. It is always buffer-local in all buffers.
If you set this variable to @code{nil} in a buffer, that buffer does
not have a mode line. (A window that is just one line tall never
displays a mode line.)
-@end defvar
+@end defopt
The default value of @code{mode-line-format} is designed to use the
values of other variables such as @code{mode-line-position} and
least 12 columns.
@end defvar
-@defvar mode-line-position
+@defopt mode-line-position
This variable indicates the position in the buffer. Its default value
displays the buffer percentage and, optionally, the buffer size, the
line number and the column number.
-@end defvar
+@end defopt
@defvar vc-mode
The variable @code{vc-mode}, buffer-local in each buffer, records
line, or @code{nil} for no version control.
@end defvar
-@defvar mode-line-modes
+@defopt mode-line-modes
This variable displays the buffer's major and minor modes. Its
default value also displays the recursive editing level, information
on the process status, and whether narrowing is in effect.
-@end defvar
+@end defopt
The following three variables are used in @code{mode-line-modes}:
The representation for a string is determined and recorded in the string
when the string is constructed.
-@defvar enable-multibyte-characters
+@defopt enable-multibyte-characters
This variable specifies the current buffer's text representation.
If it is non-@code{nil}, the buffer contains multibyte text; otherwise,
it contains unibyte encoded text or binary non-text data.
You cannot set this variable directly; instead, use the function
@code{set-buffer-multibyte} to change a buffer's representation.
-@end defvar
+@end defopt
@defvar default-enable-multibyte-characters
This variable's value is entirely equivalent to @code{(default-value
(@pxref{Specifying Coding Systems}).
@cindex file contents, and default coding system
-@defvar auto-coding-regexp-alist
+@defopt auto-coding-regexp-alist
This variable is an alist of text patterns and corresponding coding
systems. Each element has the form @code{(@var{regexp}
. @var{coding-system})}; a file whose first few kilobytes match
@code{file-coding-system-alist} (see below). The default value is set
so that Emacs automatically recognizes mail files in Babyl format and
reads them with no code conversions.
-@end defvar
+@end defopt
@cindex file name, and default coding system
-@defvar file-coding-system-alist
+@defopt file-coding-system-alist
This variable is an alist that specifies the coding systems to use for
reading and writing particular files. Each element has the form
@code{(@var{pattern} . @var{coding})}, where @var{pattern} is a regular
If @var{coding} (or what returned by the above function) is
@code{undecided}, the normal code-detection is performed.
-@end defvar
+@end defopt
-@defvar auto-coding-alist
+@defopt auto-coding-alist
This variable is an alist that specifies the coding systems to use for
reading and writing particular files. Its form is like that of
@code{file-coding-system-alist}, but, unlike the latter, this variable
takes priority over any @code{coding:} tags in the file.
-@end defvar
+@end defopt
@cindex program name, and default coding system
@defvar process-coding-system-alist
@end defvar
@cindex default coding system, functions to determine
-@defvar auto-coding-functions
+@defopt auto-coding-functions
This variable holds a list of functions that try to determine a
coding system for a file based on its undecoded contents.
If a file has a @samp{coding:} tag, that takes precedence, so these
functions won't be called.
-@end defvar
+@end defopt
@defun find-auto-coding filename size
This function tries to determine a suitable coding system for
affect it.
@end defvar
-@defvar inhibit-eol-conversion
+@defopt inhibit-eol-conversion
When this variable is non-@code{nil}, no end-of-line conversion is done,
no matter which coding system is specified. This applies to all the
Emacs I/O and subprocess primitives, and to the explicit encoding and
decoding functions (@pxref{Explicit Encoding}).
-@end defvar
+@end defopt
@cindex priority order of coding systems
@cindex coding systems, priority
loads this @emph{before} the user's init file. You can inhibit the
loading of this file with the option @samp{--no-site-file}.
-@defvar site-run-file
+@defopt site-run-file
This variable specifies the site-customization file to load before the
user's init file. Its normal value is @code{"site-start"}. The only
way you can change it with real effect is to do so before dumping
Emacs.
-@end defvar
+@end defopt
@xref{Init Examples,, Init File Examples, emacs, The GNU Emacs Manual}, for
examples of how to make various commonly desired customizations in your
system. The variable is also useful for constructing frame titles
(@pxref{Frame Titles}).
-@defvar mail-host-address
+@defopt mail-host-address
If this variable is non-@code{nil}, it is used instead of
@code{system-name} for purposes of generating email addresses. For
example, it is used when constructing the default value of
@code{user-mail-address}. @xref{User Identification}. (Since this is
done when Emacs starts up, the value actually used is the one saved when
Emacs was dumped. @xref{Building Emacs}.)
-@end defvar
+@end defopt
@deffn Command getenv var &optional frame
@cindex environment variable access
files or user profile.
@end defvar
-@defvar user-mail-address
+@defopt user-mail-address
This holds the nominal email address of the user who is using Emacs.
Emacs normally sets this variable to a default value after reading your
init files, but not if you have already set it. So you can set the
variable to some other value in your init file if you do not
want to use the default value.
-@end defvar
+@end defopt
@defun user-login-name &optional uid
If you don't specify @var{uid}, this function returns the name under
track of output sent to the terminal. The variable @code{baud-rate}
tells you what Emacs thinks is the output speed of the terminal.
-@defvar baud-rate
+@defopt baud-rate
This variable's value is the output speed of the terminal, as far as
Emacs knows. Setting this variable does not change the speed of actual
data transmission, but the value is used for calculations such as
for the corresponding functionality on graphical terminals.
The value is measured in baud.
-@end defvar
+@end defopt
If you are running across a network, and different parts of the
network work at different baud rates, the value returned by Emacs may be
backward until encountering the front of a word, rather than forward.
@end deffn
-@defvar words-include-escapes
+@defopt words-include-escapes
@c Emacs 19 feature
This variable affects the behavior of @code{forward-word} and everything
that uses it. If it is non-@code{nil}, then characters in the
``escape'' and ``character quote'' syntax classes count as part of
words. Otherwise, they do not.
-@end defvar
+@end defopt
@defvar inhibit-field-text-motion
If this variable is non-@code{nil}, certain motion functions including
This section describes some variables that hold regular expressions
used for certain purposes in editing:
-@defvar page-delimiter
+@defopt page-delimiter
This is the regular expression describing line-beginnings that separate
pages. The default value is @code{"^\014"} (i.e., @code{"^^L"} or
@code{"^\C-l"}); this matches a line that starts with a formfeed
character.
-@end defvar
+@end defopt
The following two regular expressions should @emph{not} assume the
match always starts at the beginning of a line; they should not use
@samp{^} would be incorrect. However, a @samp{^} is harmless in modes
where a left margin is never used.
-@defvar paragraph-separate
+@defopt paragraph-separate
This is the regular expression for recognizing the beginning of a line
that separates paragraphs. (If you change this, you may have to
change @code{paragraph-start} also.) The default value is
@w{@code{"[@ \t\f]*$"}}, which matches a line that consists entirely of
spaces, tabs, and form feeds (after its left margin).
-@end defvar
+@end defopt
-@defvar paragraph-start
+@defopt paragraph-start
This is the regular expression for recognizing the beginning of a line
that starts @emph{or} separates paragraphs. The default value is
@w{@code{"\f\\|[ \t]*$"}}, which matches a line containing only
whitespace or starting with a form feed (after its left margin).
-@end defvar
+@end defopt
-@defvar sentence-end
+@defopt sentence-end
If non-@code{nil}, the value should be a regular expression describing
the end of a sentence, including the whitespace following the
sentence. (All paragraph boundaries also end sentences, regardless.)
@code{sentence-end} has to construct the regexp. That is why you
should always call the function @code{sentence-end} to obtain the
regexp to be used to recognize the end of a sentence.
-@end defvar
+@end defopt
@defun sentence-end
This function returns the value of the variable @code{sentence-end},
is value of @code{indent-line-function} in Paragraph-Indent Text mode.
@end defun
-@defvar left-margin
+@defopt left-margin
This variable specifies the base left margin column. In Fundamental
mode, @kbd{C-j} indents to this column. This variable automatically
becomes buffer-local when set in any fashion.
-@end defvar
+@end defopt
-@defvar fill-nobreak-predicate
+@defopt fill-nobreak-predicate
This variable gives major modes a way to specify not to break a line
at certain places. Its value should be a list of functions. Whenever
filling considers breaking the line at a certain place in the buffer,
it calls each of these functions with no arguments and with point
located at that place. If any of the functions returns
non-@code{nil}, then the line won't be broken there.
-@end defvar
+@end defopt
@node Adaptive Fill
@section Adaptive Fill Mode
like ordinary local bindings, but they are localized depending on
``where'' you are in Emacs, rather than localized in time.
-@defvar max-specpdl-size
+@defopt max-specpdl-size
@anchor{Definition of max-specpdl-size}
@cindex variable limit error
@cindex evaluation error
The default value is 1000. Entry to the Lisp debugger increases the
value, if there is little room left, to make sure the debugger itself
has room to execute.
-@end defvar
+@end defopt
@node Void Variables
@section When a Variable is ``Void''
@code{display-buffer} does not split any window.
@end defopt
-@defvar split-window-preferred-function
+@defopt split-window-preferred-function
This variable must specify a function with one argument, which is a
window. The @code{display-buffer} routines will call this function with
one or more candidate windows when they look for a window to split. The
window or @code{nil}, but you are not encouraged to do so
unconditionally. If you want @code{display-buffer} to never split any
windows, set @code{pop-up-windows} to @code{nil}.
-@end defvar
+@end defopt
@defun split-window-sensibly window
This function takes a window as argument and tries to split that window
of frame parameters.
@end defun
-@defvar special-display-function
+@defopt special-display-function
This variable holds the function to call to display a buffer specially.
It receives the buffer as an argument, and should return the window in
which it is displayed. The default value of this variable is
@code{special-display-popup-frame}, see below.
-@end defvar
+@end defopt
@defun special-display-popup-frame buffer &optional args
This function tries to make @var{buffer} visible in a frame of its own.
@end defun
@c Emacs 19 feature
-@defvar display-buffer-function
+@defopt display-buffer-function
This variable is the most flexible way to customize the behavior of
@code{display-buffer}. If it is non-@code{nil}, it should be a function
that @code{display-buffer} calls to do the work. The function should
This variable takes precedence over all the other options described
above.
-@end defvar
+@end defopt
If all options described above fail to produce a suitable window,
@code{display-buffer} tries to reuse an existing window. As a last
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