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From: Richard Stallman <rms@gnu.org>
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Subject: Re: please consider emacs-unicode for pervasive changes
Date: Fri, 06 Sep 2002 00:01:46 -0400
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      In other words, running `diff' on 
    the original and the edited files will not show any changes in those line 
    you didn't modify.  However, unification means that `diff' _will_ 
    sometimes show differences in unedited portions of the file, because C2 
    was recoded into a different codepoint.

Given that we are using unicode and unification,
isn't this inevitable?