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From: Richard Stallman <rms@gnu.org>
Newsgroups: gmane.emacs.devel
Subject: Re: command fill-paragraph deletes leading Umlauts if
	line	begins	with space
Date: Wed, 29 Dec 2004 15:46:53 -0500
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    But the current Emacs keeps them in syntax table and updates
    them when a language environment is changed in unibyte-mode.
    I've just confirmed that 0334 (U-umlaut in Latin-1) has
    syntax word-constituent in unibyte-mode in Latin-1
    lang. env.

Maybe he didn't set the language environment.
What is the situation in the CVS Emacs if you never set the
language environment?  Conversion to multibyte uses Latin-1
by default.

    >>  making the case-conversion commands convert each character to
    >>  multibyte and check its syntax.

    Why does case-conversion have to check syntax?

M-c detects word boundaries with syntax checking.