From: Kenichi Handa <handa@gnu.org>
To: emacs-devel@gnu.org
Subject: request to revert the chnage of revno 112925
Date: Wed, 19 Jun 2013 20:54:13 +0900 [thread overview]
Message-ID: <87k3lql3iy.fsf@gnu.org> (raw)
I'd like to revert the following change (revno 112925):
2013-06-11 Stefan Monnier <monnier@iro.umontreal.ca>
* international/mule-conf.el (file-coding-system-alist): Use utf-8 as
default for Elisp files.
By my recent changes for tuning up ASCII and UTF-8 file
reading, the speed for reading a UTF-8 file is almost the
same in the following cases:
* the file has coding: utf-8; tag
* find-operation-coding-system returns utf-8 for the file
(the current case of *.el files)
* the file has no coding tag and utf-8 is the most preferred
coding system
* the file has no coding tag and utf-8 is the most preferred
coding system among 8-bit encoding (which means that such
7-bit coding systems as iso-2022-jp may be more preferred)
So, the above change does not improve the performance that
much.
In addition, as iso-2022-jp and iso-2022-7bit have been the
most correctly detected coding systems in any environments,
there are many packages that uses them for *.el files (at
least in Japan). Now many of them doesn't work.
In some sence, the above change is a regression because it
disables Emacs' facility to automatically decode ISO 2022
based 7-bit encodings, and we should notify users about such
a change in advance, for instance, by showing warnings by
byte-compiler for non-UTF-8 and no-coding-tag *.el files for
a while (perhaps while Emacs' version is 24.*).
---
Kenichi Handa
handa@gnu.org
next reply other threads:[~2013-06-19 11:54 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-06-19 11:54 Kenichi Handa [this message]
2013-06-19 12:59 ` request to revert the chnage of revno 112925 Stefan Monnier
2013-06-19 15:35 ` Kenichi Handa
2013-06-19 16:11 ` Paul Eggert
2013-06-19 20:49 ` Stefan Monnier
2013-06-19 21:15 ` Paul Eggert
2013-06-20 2:09 ` Stefan Monnier
2013-06-21 5:25 ` Achim Gratz
2013-06-21 6:48 ` Stephen J. Turnbull
2013-06-19 16:54 ` Stefan Monnier
2013-06-22 12:36 ` Kenichi Handa
2013-06-22 12:46 ` Eli Zaretskii
2013-06-22 12:54 ` Juanma Barranquero
2013-06-22 15:26 ` Stefan Monnier
2013-06-29 3:50 ` request to revert the change " Kenichi Handa
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