[Issue 11738] partialShuffle actually shuffles the entire input

[via Digitalmars-d-bugs]

https://issues.dlang.org/show_bug.cgi?id=11738

--- Comment #4 from Ivan Kazmenko <gassa at mail.ru> ---
(In reply to Joseph Rushton Wakeling from comment #3)
> (In reply to Ivan Kazmenko from comment #2)
> > Disclaimer: I may have misunderstood the issue, in which case, please
> > explain what is the intent here.
> 
> At first glance, I reckon it's my screw-up misinterpreting the
> documentation.  Sorry about that. :-(
> 
> I'm not sure how much time I have in the near future, but I don't object to
> the original patch being reverted.

I can submit a PR for that ~tomorrow if you want, seems trivial: change one
line of actual code and a few unittests.

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