GNU bug report logs - #63810
29.0.91; typescript-ts-mode grammar missing the "is" keyword

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From: help-debbugs <at> gnu.org (GNU bug Tracking System)
To: Eli Zaretskii <eliz <at> gnu.org>
Cc: tracker <at> debbugs.gnu.org
Subject: bug#63810: closed (29.0.91; typescript-ts-mode grammar missing
 the "is" keyword)
Date: Thu, 01 Jun 2023 11:59:02 +0000

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Your message dated Thu, 01 Jun 2023 14:58:48 +0300
with message-id <83fs7bcs1z.fsf <at> gnu.org>
and subject line Re: bug#63810: 29.0.91; typescript-ts-mode grammar missing the "is" keyword
has caused the debbugs.gnu.org bug report #63810,
regarding 29.0.91; typescript-ts-mode grammar missing the "is" keyword
to be marked as done.

(If you believe you have received this mail in error, please contact
help-debbugs <at> gnu.org.)


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From: Jimmy Yuen Ho Wong <wyuenho <at> gmail.com>
To: bug-gnu-emacs <at> gnu.org
Subject: 29.0.91; typescript-ts-mode grammar missing the "is" keyword
Date: Wed, 31 May 2023 08:30:14 +0100

Reproduction:

1. C-x C-f test.ts
2. Insert
   ```typescript
   function isFish(pet: Fish | Bird): pet is Fish {
     return (pet as Fish).swim !== undefined;
   }
   ```
3. Observe the `is` keyword isn't highlighted.

Expectation:

TypeScript has a concept called type predicates, which introduces a
keyword called `is`.


[Reference](https://www.typescriptlang.org/docs/handbook/2/narrowing.html#using-type-predicates)

[Message part 3 (message/rfc822, inline)]

From: Eli Zaretskii <eliz <at> gnu.org>
To: Theodor Thornhill <theo <at> thornhill.no>
Cc: 63810-done <at> debbugs.gnu.org, casouri <at> gmail.com, jostein <at> kjonigsen.net,
 wyuenho <at> gmail.com
Subject: Re: bug#63810: 29.0.91; typescript-ts-mode grammar missing the "is"
 keyword
Date: Thu, 01 Jun 2023 14:58:48 +0300

> From: Theodor Thornhill <theo <at> thornhill.no>
> Cc: 63810 <at> debbugs.gnu.org
> Date: Wed, 31 May 2023 20:51:59 +0200
> 
> Now fixed on emacs-29.

Thanks, closing.

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