[Issue 22034] std.ascii can't be used with -betterc

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=22034

--- Comment #2 from Heromyth <bitworld at qq.com> ---
In fact, the -betterc does not work properly since DMD 2.096.0. 

What happened since then?

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