Re: `after-change-functions' and undo

[Richard Stallman]

I will add this.  Thanks.

*** text.texi   23 Oct 2004 00:52:51 -0400      1.79
--- text.texi   28 Nov 2004 19:53:10 -0500      
***************
*** 1244,1249 ****
--- 1244,1255 ----
  undo individual replacements one by one.
  @end defun
  
+ @defvar undo-in-progress
+ This variable is normally @code{nil}, but the undo commands bind it to
+ @code{t}.  This is so that various kinds of change hooks can tell when
+ they're being called for the sake of undoing.
+ @end defvar
+ 
  @defun primitive-undo count list
  This is the basic function for undoing elements of an undo list.
  It undoes the first @var{count} elements of @var{list}, returning