bug#71998: 31.0.50; Typescript grammar v0.21.2 causes test failure

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

Eli Zaretskii <eliz@gnu.org> writes:

>> From: john muhl <jm@pub.pink>
>> Date: Tue, 16 Jul 2024 18:59:01 -0500
>> 
>> john muhl <jm@pub.pink> writes:
>> 
>> > The newly released version 0.21.2 of the typescript grammar caused
>> > the typescript-ts-mode tests to start failing.
>> 
>> I was mistaken about the new grammar breaking the test (it just
>> made it visible). Replacing it with:
>> 
>>   =-=
>>   const foo = (props) => {
>>   return (
>>   <div>
>>   <div>
>>   <div>
>>   <div>
>>   {
>>   props.foo
>>   ? Hello, foo!
>>   : Hello, World!;
>>   }
>>   </div>
>>   </div>
>>   </div>
>>   </div>
>>   );
>>   }
>>   =-=
>>   const foo = (props) => {
>>     return (
>>       <div>
>>         <div>
>>           <div>
>>             <div>
>>               {
>>                 props.foo
>>                   ? Hello, foo!
>>                   : Hello, World!;
>>               }
>>             </div>
>>           </div>
>>         </div>
>>       </div>
>>     );
>>   }
>>   =-=-=
>> 
>> and running with older grammars (0.19,20,21) also fails.
>
> Theo, any ideas, comments or suggestions?

Yeah, it seems it is one of the compat-functions that causes this,
afaict. Taking a look right now. Probably should be possible to catch
some errors here.

Theo