From: Robert Pluim <rpluim@gmail.com>
To: Eli Zaretskii <eliz@gnu.org>
Cc: luangruo@yahoo.com, larsi@gnus.org, 54562@debbugs.gnu.org
Subject: bug#54562: 28.0.91; Emoji sequence not composed
Date: Tue, 29 Mar 2022 12:45:44 +0200 [thread overview]
Message-ID: <87o81prq93.fsf@gmail.com> (raw)
In-Reply-To: <834k3i9i1y.fsf@gnu.org> (Eli Zaretskii's message of "Mon, 28 Mar 2022 19:07:53 +0300")
>>>>> On Mon, 28 Mar 2022 19:07:53 +0300, Eli Zaretskii <eliz@gnu.org> said:
>> From: Robert Pluim <rpluim@gmail.com>
>> Cc: luangruo@yahoo.com, larsi@gnus.org, 54562@debbugs.gnu.org
>> Date: Mon, 28 Mar 2022 16:59:16 +0200
>>
>> >> +static bool
>> >> +codepoint_is_combining_lookup_eligible (int ch)
>> >> +{
>> >> + if ((0x20D0 <= ch && ch <= 0x20FF) || ch == 0x308)
>> >> + return true;
>> >> + return false;
>> >> +}
>>
Eli> Any reason not to use the Unicode category here? Or do we want to
Eli> support only specific characters (in which case U+0308 is still not
Eli> the only one)?
>>
>> You'd want to apply this to everything in Mn? Thatʼs a lot of
>> codepoints. Or did you mean Me? Or anything in Mn thatʼs latin? The
>> possibilities are endless :-)
Eli> I thought about any Mn character whose canonical-combining-class
Eli> property is 200 and above. The COMBINING ENCLOSING <SOMETHING> stuff
Eli> will need to be added to that, of course. And we could have that
Eli> option have multiple possible values, not just on/off...
OK. Would Me be ok for you, or would you specifically want only the
codepoints from the "Combining Diacritical Marks for Symbols" block?
I guess you'd want options like:
'all => combining-class + enclosing
'enclosing
'combining-class
(did we want to cover the 'number followed U+20E3 => emoji' case with
an option too?)
Eli> Btw, for sequences that include a base character and 2 or more
Eli> diacritics, selecting a font that supports the first diacritic (the
Eli> one which triggers the composition) might not be enough, since the
Eli> rest of the diacritics could be absent from that font. Instead, we'd
Eli> need something like "find the font for each one of them and then use
Eli> the one which supports the largest subset of them".
font_range currently only has access to the first diacritic, so that
would be a bigger change. And that subset had better have the same
size as the number of unique diacritics, otherwise itʼs unlikely to
work.
Robert
--
next prev parent reply other threads:[~2022-03-29 10:45 UTC|newest]
Thread overview: 47+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <87bkxu8k7t.fsf.ref@yahoo.com>
2022-03-25 9:17 ` bug#54562: 28.0.91; Emoji sequence not composed Po Lu via Bug reports for GNU Emacs, the Swiss army knife of text editors
2022-03-25 10:27 ` Eli Zaretskii
2022-03-25 10:32 ` Po Lu via Bug reports for GNU Emacs, the Swiss army knife of text editors
2022-03-25 10:54 ` Robert Pluim
2022-03-25 11:47 ` Po Lu via Bug reports for GNU Emacs, the Swiss army knife of text editors
2022-03-25 12:15 ` Eli Zaretskii
2022-03-25 12:46 ` Andreas Schwab
2022-03-25 13:05 ` Eli Zaretskii
2022-03-25 13:14 ` Andreas Schwab
2022-03-25 13:30 ` Robert Pluim
2022-03-25 13:57 ` Andreas Schwab
2022-03-25 13:44 ` Eli Zaretskii
2022-03-25 14:03 ` Andreas Schwab
2022-03-25 14:05 ` Po Lu via Bug reports for GNU Emacs, the Swiss army knife of text editors
2022-03-25 14:14 ` Robert Pluim
2022-03-26 1:16 ` Po Lu via Bug reports for GNU Emacs, the Swiss army knife of text editors
2022-03-26 5:56 ` Eli Zaretskii
2022-03-26 16:51 ` Lars Ingebrigtsen
2022-03-27 0:32 ` Po Lu via Bug reports for GNU Emacs, the Swiss army knife of text editors
2022-03-27 15:10 ` Robert Pluim
2022-03-28 0:19 ` Po Lu via Bug reports for GNU Emacs, the Swiss army knife of text editors
2022-03-28 7:47 ` Robert Pluim
2022-03-28 11:51 ` Eli Zaretskii
2022-03-28 12:46 ` Robert Pluim
2022-03-28 13:12 ` Eli Zaretskii
2022-03-28 14:59 ` Robert Pluim
2022-03-28 16:07 ` Eli Zaretskii
2022-03-29 10:45 ` Robert Pluim [this message]
2022-03-29 11:44 ` Eli Zaretskii
2022-03-29 14:50 ` Robert Pluim
2022-03-29 15:42 ` Eli Zaretskii
2022-03-29 15:59 ` Robert Pluim
2022-03-29 16:49 ` Eli Zaretskii
2022-03-28 13:19 ` Andreas Schwab
2022-03-28 15:01 ` Robert Pluim
2022-03-28 15:35 ` Andreas Schwab
2022-03-28 16:11 ` Eli Zaretskii
2022-03-28 16:20 ` Andreas Schwab
2022-03-28 16:26 ` Robert Pluim
2022-03-28 16:41 ` Andreas Schwab
2022-03-28 17:10 ` Eli Zaretskii
2022-03-28 17:14 ` Eli Zaretskii
2022-03-28 17:39 ` Andreas Schwab
2022-03-28 18:12 ` Eli Zaretskii
2022-03-28 18:14 ` Andreas Schwab
2022-03-28 18:15 ` Eli Zaretskii
2022-03-25 11:23 ` Eli Zaretskii
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