Name of the lexer
Kotlin
Code sample
A sample of the code that produces the bug.

when(foo) {
    1 -> "Hello"::class
    2 -> "Bye"::class
}

Code Sample

Additional context

The lexer correctly reads "Hello" as string, :: as operator, and when it reads class it pushes :class on the stack. With this context no matching rule is found and an error is produced.

Working example where the class-name is avoided

when(foo) {
    1 -> "Hello"::klass
    2 -> "Bye"::klass
}

Writing class here is valid syntax. I am interested in fixing this, but I cannot guarantee success ;)