Anything ending in _t is highlighted as if it was a valid type

[php4fan]

Describe the problem

I'm not fluent in C++.
I seemed to remember there was a type called address_t, so before I even googled it I just thought I'd try, and I wrote:

//......
int x = 8;
address_t idx = 0;
//...

As soon as I typed the "t" in "address_t", the supposed type name became highlighted in the same color as other correct types, like int in the line above.

So that made me think that it was correct.

Then I compiled, and it doesn't compile:

Compilation error: 'address_t' does not name a type

So I tried and replaced address_t with lkjsnldf_t and that gets highlighted too.

It's not because of the position either. If I write "lsdfnvlsdnv", it does not get highlighted.

Apparently anything ending in _t gets recognized as a valid type name.

To reproduce

Type:

kvbsv_t x = 0;

Expected behavior

kvbsv_t shouldn't get highlighted as a type name.

Arduino IDE version

2.2.1

Operating system

Linux

Operating system version

Manjaro Linux

Additional context

No response

Issue checklist

• I searched for previous reports in the issue tracker
• I verified the problem still occurs when using the latest nightly build
• My report contains all necessary details

[kittaakos]

This is Textmate token scope: support.type.built-in.posix-reserved.cpp support.type.posix-reserved.cpp source.cpp

Steps to reproduce:

1. Have a sketch (The funny thing is even the default cpp syntax coloring marks kvbsv_t as a type 👇):

void setup() {}
void loop() {}

kvbsv_t x = 0;

2. Execute the Developer: Inspect Token command,
3. Select kvbsv_t

I got the same behavior from VS Code and the Theia Blueprint applicant. I doubt this is an issue in IDE2 or something we can fix, but I will investigate where the scope comes from VS Code or the no grammar.