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bug#31588: 26.1; format counts some Unicode characters as two
From: |
Noam Postavsky |
Subject: |
bug#31588: 26.1; format counts some Unicode characters as two |
Date: |
Sun, 03 Jun 2018 12:29:20 -0400 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/26.1 (gnu/linux) |
close 31588
quit
Eli Zaretskii <eliz@gnu.org> writes:
>> From: Noam Postavsky <npostavs@gmail.com>
>> Date: Thu, 24 May 2018 20:50:45 -0400
>> Cc: 31588@debbugs.gnu.org
>>
>> > As far as I can tell, something is off about the styled_format and how
>> > it counts characters- I suspect something about counting
>> > multibyte characters, but it's a little beyond me.
>>
>> I think it's intended, ➖ and ❌ are wide characters:
>>
>> (mapcar #'char-width '(?➖ ?❌ ?▶ ?✚ ?▷ ?◼))
>> ;=> (2 2 1 1 1 1)
>
> Yes, that's the reason.
>
>> Although in my current font the width seems to be more like 1.8 or
>> something.
>
> Unfortunately, the actual width depends on the font, and what's more,
> sometimes varies significantly between different fonts. Maybe we
> should have a variant of char-width that actually looks at the font
> (of course, such a variant will need a window or frame as one of its
> arguments).
Well, I don't know if format could do anything useful with a non-integer
width anyway.
> But with the current state of our support for wide characters, this is
> not a bug.
Okay, I'm closing this report.
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