[clang] [Clang] Wide delimiters ('{{{') for expect strings (PR #77326)

[Zequan Wu via cfe-commits]

ZequanWu wrote:

> @ZequanWu would either of these work for you?
> 
> ```c++
>  DCHECK_OK(foo); // expected-error at components/reporting/util/status_macros.h:* {{{CHECK,DCHECK,ASSERT,EXPECT}_OK do not accept a type other than Status or StatusOr.}}}
> ```
> 
> or
> 
> ```c++
>  DCHECK_OK(foo); // expected-error-re at components/reporting/util/status_macros.h:* {{{CHECK,DCHECK,ASSERT,EXPECT}_OK do not accept a type other than Status or StatusOr.}}
> ```

Thanks, it's a simple fix, just adding a space between 2nd and 3rd braces:
```
DCHECK_OK(foo);  // expected-error at components/reporting/util/status_macros.h:* {{ {CHECK,DCHECK,ASSERT,EXPECT}_OK do not accept a type other than Status or StatusOr.}}
```

https://github.com/llvm/llvm-project/pull/77326