Index: emacs/lispref/commands.texi
diff -c emacs/lispref/commands.texi:1.69 emacs/lispref/commands.texi:1.70
*** emacs/lispref/commands.texi:1.69 Mon Jul 18 15:38:19 2005
--- emacs/lispref/commands.texi Tue Aug 9 12:00:09 2005
***************
*** 2435,2449 ****
@end defvar
@defmac while-no-input body...
! This construct runs the @var{body} forms and returns the value
! of the last one---but only if no input arrives. If any input
! arrives during the execution of the @var{body} forms, it aborts
! them (working much like a quit), and the @code{while-no-input}
! form returns @code{nil}.
If a part of @var{body} binds @code{inhibit-quit} to [EMAIL PROTECTED],
arrival of input during those parts won't cause an abort until
the end of that part.
@end defmac
@defun discard-input
--- 2435,2460 ----
@end defvar
@defmac while-no-input body...
! This construct runs the @var{body} forms and returns the value of the
! last one---but only if no input arrives. If any input arrives during
! the execution of the @var{body} forms, it aborts them (working much
! like a quit). The @code{while-no-input} form returns @code{nil} if
! aborted by a real quit, and returns @code{t} if aborted by arrival of
! other input.
If a part of @var{body} binds @code{inhibit-quit} to [EMAIL PROTECTED],
arrival of input during those parts won't cause an abort until
the end of that part.
+
+ If you want to be able to distingish all possible values computed
+ by @var{body} from both kinds of abort conditions, write the code
+ like this:
+
+ @example
+ (while-no-input
+ (list
+ (progn . @var{body})))
+ @end example
@end defmac
@defun discard-input
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