Generality creep

[Jonathan Marler]

On Tuesday, 19 March 2019 at 02:52:34 UTC, Andrei Alexandrescu 
wrote:
> Walter and I were looking at indexOf in the standard library. 
> It has several overloads, of which let's look at the first two:
>
> [...]

+1 that these corner cases should not be supported in phobos, but 
at this point how could phobos drop support for these cases? In 
fact I'm pretty sure I've written a fair amount of code that 
depends on them (i.e. using alias this to subtype with an 
rvalue...hey, we all make mistakes). Of course I'm more than 
willing to fix my code but we're talking about a huge breaking 
change here. What's the path forward?