GNU bug report logs - #48125
28.0.50; Display garbled by emoji variation sequence

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Message #52 received at 48125 <at> debbugs.gnu.org (full text, mbox):

From: Filipp Gunbin <fgunbin <at> fastmail.fm>
To: Eli Zaretskii <eliz <at> gnu.org>
Cc: 48125 <at> debbugs.gnu.org
Subject: Re: bug#48125: 28.0.50; Display garbled by emoji variation sequence
Date: Wed, 05 May 2021 16:41:19 +0300

On 05/05/2021 14:49 +0300, Eli Zaretskii wrote:

>> From: Filipp Gunbin <fgunbin <at> fastmail.fm>
>> Cc: 48125 <at> debbugs.gnu.org
>> Date: Tue, 04 May 2021 23:36:19 +0300
>>
>> Ok, I have two continuation backslashes in the end of the screen line
>> with soccer balls.  But what I wanted to note is that on continuation
>> lines, I get equal column numbers at different screen positions.
>>
>> I've now made two screenshots with point at each EOL, to show that
>> screen positions are different.
>
> OK, but what is the point you want to make?  current-column doesn't
> measure screen coordinates, it measures the sum of character-widths.
> A single-width character increments the column count by 1, a
> double-width character increments it by 2.  Given this fact, is there
> something wrong that you see with the reported column in each case?

I wanted to confirm that this all is ok, now you say just that, thanks.

For the record, from what I can see, Terminal has problems when
composing 2-column chars with that VARIATION SELECTOR-16 (and maybe
others).

Filipp

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