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From: martin rudalics <rudalics@gmx.at>
Newsgroups: gmane.emacs.devel
Subject: Re: [kzeitler@sfsws1.de.lucent.com: Buffer sometimes changes
 to	modified with truncate-partial-width-windows set to nil]
Date: Wed, 16 Aug 2006 14:51:41 +0200
Message-ID: <44E314DD.7030708@gmx.at>
References: <E1GAz72-0002m1-E1@fencepost.gnu.org>	<877j19lh93.fsf@stupidchicken.com>
	<44E2CE56.5010602@gmx.at> <q5g3bbwyjxb.fsf@sfsw51.de.lucent.com>
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Cc: Chong Yidong <cyd@stupidchicken.com>, monnier@iro.umontreal.ca,
	kifer@cs.sunysb.edu, emacs-devel@gnu.org
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 >     martin> Would the following handle it?
 >
 > No it's still the same.

Could you please verify whether the scenario described by Chong _is_
responsible for the buffer modification you see.  Try to set a
breakpoint somwhere within the

            (when (< start orig-start)

form in jit-lock.el or insert an according message.  The values of
`start', `orig-start', and `next' would interest me.

martin