[Issue 14544] isForwardRange failed to recognise valid forward range

[via Digitalmars-d-bugs]

https://issues.dlang.org/show_bug.cgi?id=14544

--- Comment #4 from Ketmar Dark <ketmar at ketmar.no-ip.org> ---
something should be fixed, i think. either documentation, or `isForwardRange`.
and fixing `isForwardRange` will not break anything, as it will happily accept
both prop and non-prop `save`...

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