@deffn Command split-window &optional window size horizontal
This function splits a new window out of @var{window}'s screen area. It
-returns the new window. @var{window} defaults to the selected window.
-When you split the selected window, it remains selected.
+returns the new window. The default for @var{window} is the selected
+window. When you split the selected window, it remains selected.
If @var{horizontal} is non-@code{nil}, then @var{window} splits into two
side by side windows. The original window keeps the leftmost @var{size}
@deffn Command delete-window &optional window
This function removes @var{window} from display and returns @code{nil}.
-@var{window} defaults to the selected window. An error is signaled if
-@var{window} is the only window on its frame.
+The default for @var{window} is the selected window. An error is
+signaled if @var{window} is the only window on its frame.
@end deffn
@deffn Command delete-other-windows &optional window
This function makes @var{window} the only window on its frame, by
-deleting the other windows in that frame. @var{window} defaults to the
-selected window. The return value is @code{nil}.
+deleting the other windows in that frame. The default for @var{window}
+is the selected window. The return value is @code{nil}.
@end deffn
@deffn Command delete-windows-on &optional buffer-or-name frame
This function deletes all windows showing @var{buffer-or-name}. If
-there are no windows showing @var{buffer-or-name}, it does nothing.
-@var{buffer-or-name} may be a buffer or the name of an existing buffer
-and defaults to the current buffer.
+there are no windows showing @var{buffer-or-name}, it does nothing. The
+optional argument @var{buffer-or-name} may be a buffer or the name of an
+existing buffer and defaults to the current buffer.
@code{delete-windows-on} operates frame by frame. If a frame has
several windows showing different buffers, then those showing
(@pxref{Dedicated Windows}), and there are other frames left, that
window's frame is deleted.
-The argument @var{frame} specifies which frames to operate on. This
-function does not use it in quite the same way as the other functions
-which scan all windows; specifically, the values @code{t} and @code{nil}
-have the opposite of their meanings in other functions. Here are the
-full details:
+The optional argument @var{frame} specifies which frames to operate on.
+This function does not use it in quite the same way as the other
+functions which scan all windows; specifically, the values @code{t} and
+@code{nil} have the opposite of their meanings in other functions. Here
+are the full details:
@itemize @bullet
@item
only window. A newly created window becomes the least recently used
window until it is selected. A minibuffer window is never a candidate.
A dedicated window (@pxref{Dedicated Windows}) is never a candidate
-unless the @var{dedicated} argument is non-@code{nil}, so if all
-existing windows are dedicated, the function returns @code{nil}.
+unless the optional argument @var{dedicated} is non-@code{nil}.
-The argument @var{frame} specifies which windows are considered.
+The optional argument @var{frame} specifies which windows are
+considered.
@itemize @bullet
@item
width). If there are no side-by-side windows, then this is the window
with the most lines. A minibuffer window is never a candidate. A
dedicated window (@pxref{Dedicated Windows}) is never a candidate unless
-the @var{dedicated} argument is non-@code{nil}, so if all existing
-windows are dedicated, the function returns @code{nil}.
+the optional argument @var{dedicated} is non-@code{nil}.
If there are two candidate windows of the same size, this function
prefers the one that comes first in the cyclic ordering of windows,
starting from the selected window (@pxref{Cyclic Window Ordering}).
-The argument @var{frame} specifies which set of windows to consider, see
-@code{get-lru-window} above.
+The optional argument @var{frame} specifies which set of windows to
+consider, see @code{get-lru-window} above.
@end defun
@cindex window that satisfies a predicate
@cindex minibuffer window, and @code{next-window}
This function returns the window following @var{window} in the cyclic
ordering of windows. This is the window @kbd{C-x o} selects if typed
-when @var{window} is selected. @var{window} defaults to the selected
-window.
+when @var{window} is selected. The default for @var{window} is the
+selected window.
-The value of the argument @var{minibuf} specifies whether the minibuffer
-is included in the window order. Normally, when @var{minibuf} is
-@code{nil}, the minibuffer is included only if it is currently
-``active''; this matches the behavior of @kbd{C-x o}. (The minibuffer
-window is active while the minibuffer is in use; see @ref{Minibuffers}.)
+The value of the optional argument @var{minibuf} specifies whether the
+minibuffer is included in the window order. Normally, when
+@var{minibuf} is @code{nil}, the minibuffer is included only if it is
+currently ``active''; this matches the behavior of @kbd{C-x o}. (The
+minibuffer window is active while the minibuffer is in use; see
+@ref{Minibuffers}.)
If @var{minibuf} is @code{t}, the cyclic ordering includes the
minibuffer window even if it is not active. If @var{minibuf} is neither
@code{t} nor @code{nil}, the minibuffer window is not included even if
it is active.
-The argument @var{all-frames} specifies which frames to consider. Here
-are the possible values and their meanings:
+The optional argument @var{all-frames} specifies which frames to
+consider. Here are the possible values and their meanings:
@table @asis
@item @code{nil}
the selected window. In an interactive call, @var{count} is the numeric
prefix argument.
-The argument @var{all-frames} has the same meaning as in
+The optional argument @var{all-frames} has the same meaning as in
@code{next-window}, but the @var{minibuf} argument of @code{next-window}
is always effectively @code{nil}. This function returns @code{nil}.
@end deffn
@defun window-list &optional frame minibuf window
This function returns a list of all windows on @var{frame}, starting
-with @var{window}. @var{frame} defaults to the selected frame;
-@var{window} defaults to the selected window.
+with @var{window}. The default for @var{frame} is the selected frame;
+the default for @var{window} is the selected window.
The value of @var{minibuf} specifies if the minibuffer window shall be
included in the result list. If @var{minibuf} is @code{t}, the result
@defun set-window-buffer window buffer-or-name &optional keep-margins
This function makes @var{window} display @var{buffer-or-name} as its
-contents. It returns @code{nil}. @var{buffer-or-name} must be a
-buffer, or the name of an existing buffer. This is the fundamental
-primitive for changing which buffer is displayed in a window, and all
-ways of doing that call this function.
+contents. It returns @code{nil}. The default for @var{window} is the
+selected window. The argument @var{buffer-or-name} must specify a
+buffer or the name of an existing buffer.
+
+@code{set-window-buffer} is the fundamental primitive for changing which
+buffer is displayed in a window, and all ways of doing that call this
+function.
@example
@group
However, if @var{keep-margins} is non-@code{nil}, display margins and
fringe widths of @var{window} remain unchanged. @xref{Fringes}.
-This function signals an error when @var{window} is @dfn{strongly}
-dedicated to its buffer (@pxref{Dedicated Windows}) and does not already
-display @var{buffer-or-name}.
+@code{set-window-buffer} signals an error when @var{window} is
+@dfn{strongly} dedicated to its buffer (@pxref{Dedicated Windows}) and
+does not already display @var{buffer-or-name}.
-This function runs @code{window-scroll-functions} before running
-@code{window-configuration-change-hook}.
+Note that this function runs @code{window-scroll-functions} before
+running @code{window-configuration-change-hook}.
@end defun
@defvar buffer-display-count
@end defvar
@defun window-buffer &optional window
-This function returns the buffer that @var{window} is displaying.
-@var{window} defaults to the selected window.
+This function returns the buffer that @var{window} is displaying. The
+default for @var{window} is the selected window.
@example
@group
cyclic ordering of windows, starting from the selected window.
@xref{Cyclic Window Ordering}.
-@var{BUFFER-OR-NAME} may be a buffer or a buffer name and defaults to
-the current buffer. The argument @var{all-frames} specifies which
-windows to consider:
+The argument @var{BUFFER-OR-NAME} may be a buffer or a buffer name and
+defaults to the current buffer. The optional argument @var{all-frames}
+specifies which windows to consider:
@itemize @bullet
@item
@defun get-buffer-window-list &optional buffer-or-name minibuf all-frames
This function returns a list of all windows currently displaying
-@var{buffer-or-name}. @var{buffer-or-name} may be a buffer or the name
-of an existing buffer and defaults to the current buffer.
+@var{buffer-or-name}. The argument @var{buffer-or-name} may be a buffer
+or the name of an existing buffer and defaults to the current buffer.
The two remaining arguments work like the same-named arguments of
@code{next-window}; they are @emph{not} like the optional arguments of
displays the buffer in the selected window. This means that a human can
see the buffer and subsequent keyboard commands will apply to it.
Contrast this with @code{set-buffer}, which makes @var{buffer-or-name}
-the current buffer but does not display it in the selected window,
+the current buffer but does not display it in the selected window;
see @ref{Current Buffer}.
If @var{buffer-or-name} is @code{nil}, @code{switch-to-buffer} chooses a
don't care which other buffer is used; you just want to make sure that
@var{buffer-or-name} is no longer displayed.
-@var{buffer-or-name} may be a buffer or the name of an existing buffer
-and defaults to the current buffer.
+The argument @var{buffer-or-name} may be a buffer or the name of an
+existing buffer and defaults to the current buffer.
If a window displaying @var{buffer-or-name} is dedicated
(@pxref{Dedicated Windows}), and is not the only window on its frame,
This command makes @var{buffer-or-name} appear in some window, but it
does not select that window and does not make the buffer specified by
@var{buffer-or-name} current. The identity of the selected window is
-unaltered by this function. @var{buffer-or-name} must be a buffer, or
-the name of an existing buffer.
+unaltered by this function. The argument @var{buffer-or-name} must be a
+buffer or the name of an existing buffer.
@var{not-this-window} non-@code{nil} means to display the specified
buffer in a window other than the selected one, even if it is already
@code{display-buffer} returns the window chosen to display
@var{buffer-or-name}.
-If the argument @var{frame} is non-@code{nil}, it specifies which frames
-to check when deciding whether the buffer is already displayed. If the
-buffer is already displayed in some window on one of these frames,
-@code{display-buffer} simply returns that window. Here are the possible
-values of @var{frame}:
+If the optional argument @var{frame} is non-@code{nil}, it specifies
+which frames to check when deciding whether the buffer is already
+displayed. If the buffer is already displayed in some window on one of
+these frames, @code{display-buffer} simply returns that window. Here
+are the possible values of @var{frame}:
@itemize @bullet
@item
buffer and @code{nil} otherwise. More precisely, the return value is
the value assigned by the last call of @code{set-window-dedicated-p} for
@var{window} or @code{nil} if that function was never called with
-@var{window} as its argument. @var{window} defaults to the selected
-window.
+@var{window} as its argument. The default for @var{window} is the
+selected window.
@end defun
@defun set-window-dedicated-p window flag
@defun window-point &optional window
This function returns the current position of point in @var{window}.
For a nonselected window, this is the value point would have (in that
-window's buffer) if that window were selected. @var{window} defaults to
-the selected window.
+window's buffer) if that window were selected. The default for
+@var{window} is the selected window.
When @var{window} is the selected window and its buffer is also the
current buffer, the value returned is the same as point in that buffer.
@cindex window end position
@defun window-end &optional window update
This function returns the position where display of its buffer ends in
-@var{window}. @var{window} defaults to the selected window.
+@var{window}. The default for @var{window} is the selected window.
Simply changing the buffer text or moving point does not update the
value that @code{window-end} returns. The value is updated only when
@end defun
@defun window-line-height &optional line window
-This function returns information about text line @var{line} in @var{window}.
-If @var{line} is one of @code{header-line} or @code{mode-line},
-@code{window-line-height} returns information about the corresponding
-line of the window. Otherwise, @var{line} is a text line number
-starting from 0. A negative number counts from the end of the window.
-The argument @var{line} defaults to the current line in @var{window};
-@var{window}, to the selected window.
+This function returns the height of text line @var{line} in
+@var{window}. If @var{line} is one of @code{header-line} or
+@code{mode-line}, @code{window-line-height} returns information about
+the corresponding line of the window. Otherwise, @var{line} is a text
+line number starting from 0. A negative number counts from the end of
+the window. The default for @var{line} is the current line in
+@var{window}; the default for @var{window} is the selected window.
If the display is not up to date, @code{window-line-height} returns
@code{nil}. In that case, @code{pos-visible-in-window-p} may be used
@defun window-vscroll &optional window pixels-p
This function returns the current vertical scroll position of
-@var{window}. @var{window} defaults to the selected window. If
-@var{pixels-p} is non-@code{nil}, the return value is measured in
+@var{window}. The default for @var{window} is the selected window.
+If @var{pixels-p} is non-@code{nil}, the return value is measured in
pixels, rather than in units of the normal line height.
@example
@defun window-hscroll &optional window
This function returns the total leftward horizontal scrolling of
@var{window}---the number of columns by which the text in @var{window}
-is scrolled left past the left margin. @var{window} defaults to the
-selected window.
+is scrolled left past the left margin. The default for
+@var{window} is the selected window.
The return value is never negative. It is zero when no horizontal
scrolling has been done in @var{window} (which is usually the case).
This function returns the number of lines in @var{window}, including its
mode line and header line, if any. If @var{window} fills its entire
frame except for the echo area, this is typically one less than the
-value of @code{frame-height} on that frame. @var{window} defaults to
-the selected window.
+value of @code{frame-height} on that frame. The default for
+@var{window} is the selected window.
@example
@group
@end defun
@defun window-width &optional window
-This function returns the number of columns in @var{window}.
-@var{window} defaults to the selected window.
+This function returns the number of columns in @var{window}. The
+default for @var{window} is the selected window.
The return value does not include the window's scroll bar or the column
of @samp{|} characters that separates side-by-side windows. Moreover,
@defun window-full-width-p &optional window
This function returns non-@code{nil} if @var{window} is as wide as the
-frame that contains it; otherwise @code{nil}. @var{window} defaults to
-the selected window.
+frame that contains it; otherwise @code{nil}. The default for
+@var{window} is the selected window.
@end defun
@defun window-edges &optional window
This function returns a list of the edge coordinates of @var{window}.
-@var{window} defaults to the selected window.
+The default for @var{window} is the selected window.
The order of the list is @code{(@var{left} @var{top} @var{right}
@var{bottom})}, all elements relative to 0, 0 at the top left corner of
@defun fit-window-to-buffer &optional window max-height min-height
This function makes @var{window} the right height to display its
-contents exactly. @var{window} defaults to the selected window.
+contents exactly. The default for @var{window} is the selected
+window.
The argument @var{max-height} specifies the maximum height the window
is allowed to be; @code{nil} means use the frame height. The argument
@deffn Command shrink-window-if-larger-than-buffer &optional window
This command shrinks @var{window} vertically to be as small as possible
while still showing the full contents of its buffer---but not less than
-@code{window-min-height} lines. @var{window} defaults to the selected
-window.
+@code{window-min-height} lines. The default for @var{window} is
+the selected window.
However, this command does nothing if the window is already too small to
display the whole text of the buffer, or if part of the contents are
@code{window-min-height} automatically deletes it, and no window may be
created shorter than this. The value is measured in line units. When
the window wants a mode line and/or a header line, they are counted as
-one line each. The default value of this variable is @code{4}. A value
-less than @code{1} is ignored.
+one line each. The default value is @code{4}. A value less than
+@code{1} is ignored.
@end defopt
@defopt window-min-width
@defun current-window-configuration &optional frame
This function returns a new object representing @var{frame}'s current
-window configuration. @var{frame} defaults to the selected frame.
+window configuration. The default for @var{frame} is the selected
+frame.
@end defun
@defun set-window-configuration configuration
additional information with windows.
@defun window-parameter window parameter
-This function returns @var{window}'s value for @var{parameter}.
-@var{window} defaults to the selected window. If @var{window} has no
-setting for @var{parameter}, this function returns @code{nil}.
+This function returns @var{window}'s value for @var{parameter}. The
+default for @var{window} is the selected window. If @var{window}
+has no setting for @var{parameter}, this function returns @code{nil}.
@end defun
@defun window-parameters &optional window
This function returns all parameters of @var{window} and their values.
-@var{window} defaults to the selected window. The return value is an
-association list of elements of the form @code{(@var{parameter}
+The default for @var{window} is the selected window. The return value
+is an association list of elements of the form @code{(@var{parameter}
. @var{value})}.
@end defun
@defun set-window-parameter window parameter value
This function sets @var{window}'s value of @var{parameter} to
-@var{value} and returns @var{value}. @var{window} defaults to the
-selected window.
+@var{value} and returns @var{value}. The default for @var{window}
+is the selected window.
@end defun
Currently, window parameters are not saved in window configurations and
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