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Re: Set inhibit-compacting-font-caches non-nil on MS-Windows

From: Andy Moreton
Subject: Re: Set inhibit-compacting-font-caches non-nil on MS-Windows
Date: Sat, 03 Aug 2019 18:54:44 +0100
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/27.0.50 (windows-nt)

On Sat 03 Aug 2019, Drew Adams wrote:

>> I think we should make this variable non-nil by default on
>> MS-Windows.
>> There are quite a few bug reports in the bug DB which all complain
>> about slow redisplay on MS-Windows, and were resolved by setting this
>> variable non-nil.  So it sounds like on MS-Windows the compacting of
>> the font caches is not a good idea (the original code was written to
>> fix a problem observed on X).
> +1.  Bugs #30539 and #32159, for instance.

I don't see this problem in my usual setup on Windows, probably because
I have configured the fonts used in `fontset-default', resulting in
shorter searches for suitable fonts.

As Eli pointed out in a previous discussion, configuring the default
fontset to contain the right fonts for multiple versions of Windows is a
fair amount of work, and would require ongoing maintenance.

Given that, setting inhibit-compacting-font-caches non-nil on Windows
seems a pragmatic workaround.


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