bug#43941: HTML+ mode: dangerous apostrophe after fullwidth parenthesis

[Stephen Berman]

On Mon, 12 Oct 2020 18:20:58 +0300 Eli Zaretskii <eliz@gnu.org> wrote:

>> From: Stephen Berman <stephen.berman@gmx.net>
>> Cc: 積丹尼 Dan Jacobson <jidanni@jidanni.org>,
>>   43941@debbugs.gnu.org
>> Date: Mon, 12 Oct 2020 17:11:01 +0200
>> 
>> >> The humble APOSTROPHE becomes a color change point, due to having a
>> >> FULLWIDTH LEFT PARENTHESIS before it.
>> >
>> > I don't think it has anything to do with FULLWIDTH LEFT PARENTHESIS, I
>> > think the apostrophe invokes the string face here.
>> 
>> But the face does not change if `(' is used instead of `（', e.g. copy
>> the following two lines into a buffer and type `M-x html-mode' (or `M-x
>> mhtml-mode', the face change appears in both):
>
> So which of them is a bug?

In the context of the OP it seems clear that string face is wrong.  So
in my simpler example, that means the display of the second line
containing FULLWIDTH LEFT PARENTHESIS is buggy.

Steve Berman