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From: Eli Zaretskii <eliz@is.elta.co.il>
Cc: emacs-devel@gnu.org
Subject: Re: please consider emacs-unicode for pervasive changes
Date: Thu, 5 Sep 2002 16:48:28 +0200 (IST)	[thread overview]
Message-ID: <Pine.SUN.3.91.1020905164418.18455A-100000@is> (raw)
In-Reply-To: <200209050548.OAA13998@etlken.m17n.org>


On Thu, 5 Sep 2002, Kenichi Handa wrote:

> As Emacs-unicode unifies, for instance, character C1 of
> charset CS1 and character C2 of CS2.  So, so even if an
> original iso-2022-7bit file uses the different byte sequence
> to represent them, when emacs reads it and write, C2 will be
> encoded by the same byte sequence as C1.
> 
> It doesn't matter for Emacs because when Emacs reads that
> file again, there's no difference.

As an example of a situation where it does matter, consider this: you 
visit a file, edit some parts of it, then save it.  It would be 
reasonable to expect that portions of the file you didn't change will 
compare equal to the original file.  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.

(Please do not interpret the above to mean I'm against unification.  I'm 
not.)

  reply	other threads:[~2002-09-05 14:48 UTC|newest]

Thread overview: 89+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2002-07-18 16:02 please consider emacs-unicode for pervasive changes Dave Love
2002-07-18 16:44 ` Stefan Monnier
2002-07-19 16:53   ` Richard Stallman
2002-07-19 17:44     ` Stefan Monnier
2002-07-20  0:35       ` Richard Stallman
2002-07-20 22:07       ` Richard Stallman
2002-07-21  5:10         ` Eli Zaretskii
2002-08-09  7:56         ` Stefan Monnier
2002-08-10 17:16           ` Richard Stallman
2002-08-12 17:25             ` Luc Teirlinck
2002-08-13 22:47               ` Richard Stallman
2002-08-12 17:53             ` Tak Ota
2002-08-12 18:44               ` Stefan Monnier
2002-08-13 22:46               ` Richard Stallman
     [not found]                 ` <20020813.175221.107709446.Takaaki.Ota@am.sony.com>
2002-08-15 19:54                   ` Richard Stallman
2002-08-15 20:47                     ` Tak Ota
2002-08-16 14:31                       ` FSF Copyright Assignment Clerk
2002-08-16 17:59                       ` Richard Stallman
2002-08-16 18:32                         ` Tak Ota
2002-08-12 19:58             ` Simon Josefsson
2002-08-13 22:46               ` Richard Stallman
2002-08-14 11:52                 ` Simon Josefsson
2002-08-14 12:32                   ` Simon Josefsson
2002-08-14 23:14                   ` Richard Stallman
2002-08-31 17:12             ` Dave Love
2002-09-01  0:10               ` Alex Schroeder
2002-08-13 16:34     ` plan for code freeze Stefan Monnier
2002-08-14  5:15       ` Richard Stallman
2002-08-14 14:39         ` Stefan Monnier
2002-08-17  4:19           ` Karl Eichwalder
2002-08-17 20:08             ` Richard Stallman
     [not found]               ` <m2u1lsa3sx.fsf@primate.xs4all.nl>
2002-08-18 19:18                 ` Karl Eichwalder
2002-08-19  5:17                   ` Miles Bader
2002-08-19 20:46                     ` Richard Stallman
2002-08-19 21:55                       ` Alex Schroeder
2002-08-21  0:11                         ` Richard Stallman
2002-08-26  8:37                   ` Per Abrahamsen
2002-08-23 15:03               ` William M. Perry
2002-08-25  5:26                 ` Richard Stallman
2002-08-28 15:47                   ` William M. Perry
2002-08-29 17:50                     ` Richard Stallman
2002-08-29 17:53                       ` Stefan Monnier
2002-08-29 19:02                         ` Sam Steingold
2002-08-29 20:15                           ` Stefan Monnier
2002-08-29 20:25                             ` Sam Steingold
2002-08-29 20:36                               ` Alan Shutko
2002-08-29 20:38                               ` Stefan Monnier
2002-09-04 14:40                         ` William M. Perry
2002-07-18 18:39 ` please consider emacs-unicode for pervasive changes Ken Raeburn
2002-07-23 23:24   ` Dave Love
2002-07-24 15:54     ` Richard Stallman
2002-07-25  3:30     ` Ken Raeburn
2002-08-09  7:54     ` Stefan Monnier
2002-08-10 17:16       ` Richard Stallman
2002-08-12 20:08       ` Ken Raeburn
2002-08-13  0:30         ` Kenichi Handa
2002-08-31 17:07           ` Dave Love
2002-09-03  6:15             ` Kenichi Handa
2002-09-04 14:20               ` Richard Stallman
2002-09-05  5:48                 ` Kenichi Handa
2002-09-05 14:48                   ` Eli Zaretskii [this message]
2002-09-06  4:01                     ` Richard Stallman
2002-09-06  4:29                       ` Kenichi Handa
2002-09-07  3:17                         ` Richard Stallman
2002-09-09 22:17                           ` Dave Love
2002-09-19  4:59                             ` Eli Zaretskii
2002-09-25 22:49                               ` Dave Love
2002-09-19  4:57                       ` Eli Zaretskii
2002-09-20  3:43                         ` Richard Stallman
2002-09-25 22:39                           ` Dave Love
2002-09-06  4:46                     ` Kenichi Handa
2002-09-05 22:41                   ` Dave Love
2002-09-06  4:01                   ` Richard Stallman
2002-09-04 23:30               ` Dave Love
2002-09-05 18:03                 ` Richard Stallman
2002-09-05 20:42                   ` Kai Großjohann
2002-09-05 23:59                   ` Dave Love
2002-09-06 20:02                     ` Richard Stallman
2002-09-07 23:48                       ` Dave Love
2002-09-09  0:22                         ` Richard Stallman
2002-09-09  0:57                           ` Kenichi Handa
2002-09-09 23:33                             ` Richard Stallman
2002-09-12 23:01                               ` Dave Love
2002-09-13 19:33                                 ` Richard Stallman
2002-09-25 22:49                                   ` Dave Love
2002-09-27 17:42                                     ` Richard Stallman
2002-10-04 22:22                                       ` Dave Love
2002-10-06 16:14                                         ` Richard Stallman
2002-10-04  6:08                                     ` Kenichi Handa

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