[Issue 16663] [REG 2.072] std.unit.toUpper rejects an alias this to a string

[via Digitalmars-d-bugs]

https://issues.dlang.org/show_bug.cgi?id=16663

--- Comment #4 from anonymous4 <dfj1esp02 at sneakemail.com> ---
This probably falls under the same argument: this String is not supposed to be
a range. Maybe extension of range functions to collections (autorangification)
is in order.

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