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Re: say when undo reaches last save

From: Kevin Rodgers
Subject: Re: say when undo reaches last save
Date: Mon, 28 Apr 2003 09:21:03 -0600
User-agent: Mozilla/5.0 (X11; U; SunOS i86pc; en-US; rv: Gecko/20020406 Netscape6/6.2.2

Dan Jacobson wrote:

Idea: you know how we usually do edit, save, edit, save ...
Well, when hitting the undo button, C-/, it would be nice to know when
we have reached at least the most recent previous save depth!

Sure, if we haven't saved recently, then we just hit undo until we see
the ** change into a -- in the modeline.

But, let's say we are lest happy with this compile of the file and
want to backtrack to the previous version just a few steps ago, and no
further.  Well, just hitting undo, there is just those "Undo!"
messages in the mimbuffer, no hint of when we pass the undo that
marked the last save.

No voices from the peanut gallery saying "just save a .bak", please.

1. M-x revert-buffer RET (aka <menu-bar> <files> <revert-buffer>)

2. M-x find-alternate-file RET (aka C-x C-v)

3. Try this:

(defadvice undo (after buffer-modified-message activate)
  "If undoing the changes leaves the buffer unmodified (as it is is on disk),
display a message."
  (if (not (buffer-modified-p))
      (message "Buffer unmodified since its file was last read or saved")))

<a href="mailto:&lt;kevin.rodgers&#64;ihs.com&gt;";>Kevin Rodgers</a>

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