why doesn't formattedRead take args by ref instead of by pointer?

[Timothee Cour]

If I change formattedRead's input signature to:
uint formattedRead(R, Char, S...)(ref R r, const(Char)[] fmt, ref S args)
and adjusted code accordingly.

It seems to work fine.

see implementation here:
https://github.com/timotheecour/dtools/blob/master/dtools/overrides/format.d#L29
(just run unittests: rdmd --main -unittest dtools/all.d)

why is std.format. formattedRead taking by pointer instead ?
could we change that (with proper deprecation), or add that function?
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