On Monday, 22 June 2020 at 21:33:08 UTC, H. S. Teoh wrote:
Jonathan is coming from the POV of generic code. The problem
with move leaving the original range in its .init state isn't
so much that it will crash or anything (even though as you said
that does indicate a flaw in the range's implementation), but
that the semantics of generic code changes in subtle ways. For
example:
[...]
Seems to me like adding some unit tests with non-copyable input
ranges to Phobos could expose a number of latent bugs.