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Re: ptrdiff_t misuse [was :Re: (empty)]

From: Paul Eggert
Subject: Re: ptrdiff_t misuse [was :Re: (empty)]
Date: Sat, 30 Jun 2012 02:13:36 -0500
User-agent: Mozilla/5.0 (X11; Linux i686; rv:13.0) Gecko/20120615 Thunderbird/13.0.1

On 06/29/2012 12:07 PM, Stefan Monnier wrote:
if someone ever bumps into a problem
because of such an overflow, I'll be *super* happy, because it means
that all the performance problems we get with long lines have
been fixed.

No, if the overflow happens to generate a small integer,
Emacs will run quickly and incorrectly
without the patch in question.  Perhaps
there's a better fix, and certainly that area
of the code needs changing if hscroll
is changed to 'int' as suggested; but some fix
is needed.

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