Sorry, but that makes no sense in relation to what I posted.

That's why I asked what you considered to be a bug. My guess: The lack of copying by operators causes other operators to behave differently than you'd expect.

If you deliberately hide information, you only have yourself to blame for any ensuing confusion ####

Sorry, but that makes no sense in relation to what I posted.



Then what you posted incorrectly assumes lvalue results only affect concatenation.