[Issue 18879] !is doesn't highlight correctly

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=18879

--- Comment #10 from Manu <turkeyman at gmail.com> ---
Hmm, I would personally want something different...
When I read operator, I read ! * & + /.
While 'in' is an operator, I would want it to colour like a keyword.
When I see !in, I would want the ! to be operator coloured (ie, black on while)
and 'in' to be keyword coloured (ie, blue on white).

If you're not into that, is it possible to make that an option?

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