is exactly what you want. However, you can prevent preemption by
binding @code{redisplay-dont-pause} to a non-@code{nil} value.
+@tindex redisplay-preemption-period
+@defvar redisplay-preemption-period
+This variable specifies how many seconds Emacs waits between checks
+for new input during redisplay. (The default is 0.1 seconds.) If
+input has arrived when Emacs checks, it pre-empts redisplay and
+processes the available input before trying again to redisplay.
+
+If this variable is @code{nil}, Emacs does not check for input during
+redisplay, and redisplay cannot be preempted by input.
+
+@emph{Note} that this variable is only available if Emacs is built
+with support for sub-second timers.
+@end defvar
+
@tindex redisplay-dont-pause
@defvar redisplay-dont-pause
If this variable is non-@code{nil}, pending input does not
regardless of whether input is available.
@end defvar
+@tindex sit-for
You can request a display update, but only if no input is pending,
with @code{(sit-for 0)}. To force a display update even when input is
-pending, do this:
-
-@example
-(let ((redisplay-dont-pause t))
- (sit-for 0))
-@end example
+pending, use @code{(sit-for -1)}.
@node Truncation
@section Truncation
allows the use of scalable fonts with registry @code{muleindian-2}.
@end defvar
-@defun clear-face-cache &optional unload-p
-@tindex clear-face-cache
-This function clears the face cache for all frames.
-If @var{unload-p} is non-@code{nil}, that means to unload
-all unused fonts as well.
-@end defun
-
@defvar face-font-rescale-alist
This variable specifies scaling for certain faces. Its value should
be a list of elements of the form
The Ewoc package constructs buffer text that represents a structure
of Lisp objects, and updates the text to follow changes in that
-structure. This is like the ``view'' component in the the
+structure. This is like the ``view'' component in the
``model/view/controller'' design paradigm.
An @dfn{ewoc} is a structure that organizes information required to