How does the internal frame redisplay work?

[Kevin A. Burton]

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OK..

I spent some time looking through the Emacs lisp manual but I couldn't find
anything relevant.

I am trying to get Emacs to refresh the display while code is running.  I want
to do a (replace-match) and have this value shown for a short period of time (so
that the user knows that the replace was actually done) and them move on to
another buffer.

The only problem is that I can't get this to work.

Essentially what I want to do is something akin to:

(while (re-search-forward "foo" nil t)
    (replace-match "bar")

    (sleep-for 0.2))

The only problem is that Emacs buffers all screen updates and waits for the
(while) to complete until it redraws...

I tried doing a (redraw-frame (selected-frame)) but all this does is clear the
current display and then redraw it *after* the while runs.

Any suggestions?  Is there a variable like disable-redisplay-cache????

Kevin

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Kevin A. Burton ( address@hidden, address@hidden, address@hidden )
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