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bug#24953: 25.1; Possible inefficiency in UTF-8

From: Eli Barzilay
Subject: bug#24953: 25.1; Possible inefficiency in UTF-8
Date: Wed, 16 Nov 2016 14:11:57 -0500

On Wed, Nov 16, 2016 at 11:17 AM, Eli Zaretskii <eliz@gnu.org> wrote:
>> From: Eli Barzilay <eli@barzilay.org>
>> Date: Tue, 15 Nov 2016 23:25:35 -0500
>> In an empty buffer, insert a pile of "foo" lines (a few screens high),
>> in the middle, add the result of (insert #x23ce) (to get the unicode
>> character).  Now `C-x RET l' and "UTF-8".
> Regardless of the issue reported here, I would advise against setting
> the UTF-8 language environment on MS-Windows.  [...]
> You shouldn't need to do this, not in Emacs 25 anyway.

Is it a good idea to use it on linux?  (I originally thought that all it
gets me is a default encoding for non-ascii files...)

>> Now, just moving the cursor around in the buffer shows very
>> noticeable delays, up to more than a second.  In the default language
>> of "English" I don't see that happening.  This is on a Windows 7
>> machine.
> Fixed on the emacs-25 branch.  The reason was sub-optimal definition
> of the default fontset wrt to fonts that cover symbols and punctuation
> Unicode blocks.


                   ((x=>x(x))(x=>x(x)))                  Eli Barzilay:
                   http://barzilay.org/                  Maze is Life!

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