bug#59691: 29.0.60; typescript-ts-mode: any HTML-like elements causes fontification to become invalid and remaining parse-tree to become jsx-expression

[Theodor Thornhill via "Bug reports for GNU Emacs, the Swiss army knife of text editors" <bug-gnu-emacs@gnu.org>]

On 30 November 2022 19:19:04 CET, Eli Zaretskii <eliz@gnu.org> wrote:
>> Date: Wed, 30 Nov 2022 19:10:04 +0100
>> From: Theodor Thornhill <theo@thornhill.no>
>> CC: casouri@gmail.com, jostein@secure.kjonigsen.net, 59691@debbugs.gnu.org,
>>  jostein@kjonigsen.net
>> 
>> >Our automatic turning-on of major-modes looks at the file-name extension and
>> >little else (magic-mode-alist is not useful here).  So if a file whose
>> >extension is XYZ can have more than one applicable major-mode, we should try
>> >to do something to turn on the correct mode automatically.  What can we do?
>> 
>> We are lucky because the extensions in question are ts, tsx and js. So we don't need any smartness :)
>
>And the extensions always say unequivocally what mode to use?  Then yes, we
>are lucky, and need just one more major mode (and one more grammar library).

That's right!