From xemacs-m  Fri Feb  7 00:14:07 1997
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From: Kyle Jones <kyle_jones@wonderworks.com>
To: xemacs-beta@xemacs.org
Subject: Re: 20.0: recipe for extent_changed_for_redisplay crash
In-Reply-To: <m2lo91w6vj.fsf@altair.xemacs.org>
References: <QQcbun05817.199702070223@crystal.WonderWorks.COM>
	<m2wwslw9wl.fsf@altair.xemacs.org>
	<QQcbuv07458.199702070429@crystal.WonderWorks.COM>
	<m2lo91w6vj.fsf@altair.xemacs.org>

Steven L. Baur writes:
 > Adding 'replicating to duplicable extents guarantees that each
 > duplicated extent is eq.
 > 
 >  replicating        Meaningful only in conjunction with `duplicable'.
 >                     If this flag is set, extents that are copied from
 >                     buffers into strings are made children of the
 >                     original extent.  When the string is pasted back
 >                     into a buffer, the same extent (i.e. the `eq'
 >                     predicate applies) that was originally in the
 >                     buffer will be used if possible -- i.e. if the
 >                     extent is detached or the paste location abuts or
 >                     overlaps the extent.  This behavior is compatible
 >                     with the old "extent replica" behavior and was
 >                     apparently required by Energize.
 > 
 > If you can get by without it, please do so.  The code is very broken
 > now.

OK, it's done.

 > [...]
 > This looks like an old feature for backwards compatibility to
 > something we don't support any more.  Let's kill it.

Shouldn't be hard.  It seem ready to suicide if someone sneezes
at it.  It's hard to imagine how anything could be using this
code... at least using it for very long.

