Syntax rule for non-doc line comments

[mattheww]

§2.5 (fls_q8l2jza7d9xa) provides the following syntax rule for a non-doc line comment:

LineComment ::=
    //
  | // (~[! /] | //) ~[\n]*

The ~[! /] expression is there to make sure this rule doesn't match an outer line doc.

But that expressions matches too broadly: it accepts LF, which it shouldn't (the notation ~[X Y] is defined in §1.1.4:14 (fls_blvsfqeevosr) and means to match a single character other than X or Y).

That means that this syntax rule says, for example, that the following input
is a single LineComment:

//
x = 1

[mattheww]

The Reference has a very similar syntax rule but adds LF to the ~[! /] expression and so avoids this bug.

It seems likely that this was a transcription error when copying this rule from the Reference.