bug#61631: 29.0.60; The indentation of switch case is broken on typescript-ts-mode and tsx-ts-mode

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

Eason Huang <aqua0210@foxmail.com> writes:

> Theodor Thornhill <theo@thornhill.no> writes:
>
>> On 19 February 2023 14:24:30 CET, Eason Huang <aqua0210@foxmail.com> wrote:
>>>Hello Theodor and Emacs dev team,
>>>
>>>Recently I found that the indentation is broken in typescript-ts-mode
>>>and tsx-ts-mode. When I press RET (M-x newline) after the ':' in the
>>>case clause, it will always indent to the the same position of previouse line.
>>>
>>>For example:
>>>In typescript-ts-mode and tsx-ts-mode will get this result as below:
>>>
>>>```
>>>let day: number = 1;
>>>
>>>switch (day) {
>>>case 0:
>>>console.log("It is a Sunday.");
>>>break;
>>>case 1:
>>>console.log("It is a Monday.");
>>>break;
>>>default:
>>>console.log("No such day exists!");
>>>break;
>>>}
>>>```
>>>expected:
>>>
>>>```
>>>let day: number = 1;
>>>
>>>switch (day) {
>>>case 0:
>>>  console.log("It is a Sunday.");
>>>  break;
>>>case 1:
>>>  console.log("It is a Monday.");
>>>  break;
>>>default:
>>>  console.log("No such day exists!");
>>>break;
>>>}
>>>```
>>>
>>>steps to reprodue:
>>>
>>>1. start emacs with `emacs -Q`
>>>2. C-x C-f ~/test.tsx to open a test.tsx
>>>3. M-x typescript-ts-mode
>>>4. input the exmaple code mentioned above
>>>5. you will see the result.
>>>
>>>--
>>
>>
>> Great, thanks! I'll fix it tonight, unless you want to devise a patch yourself?
>>
> Hi Theo,
>
> Sorry, I have no idear how to fix it.
>
> I tried the latest commit(fc4bfa76db9) of emacs-29 branch, but the issue is still existed.
>
> -- 
> Eason Huang

No problem, pushing it now.

Theo