[Issue 23883] `#line` is off by one and off by two if a line comment follows

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=23883

--- Comment #2 from Bolpat <qs.il.paperinik at gmail.com> ---
So, you’re suggesting that we make a bug a feature. Checking for comments
before the directive ends isn’t that big of a deal.

You don’t even have to handle it correctly, you can make it an error if that is
easier. It’s surprising, and you shouldn’t surprise users.

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