[Issue 12931] Make const, immutable, and inout illegal as funtion attributes on the left-hand side of a function

[via Digitalmars-d-bugs]

https://issues.dlang.org/show_bug.cgi?id=12931

--- Comment #3 from Kenji Hara <k.hara...@gmail.com> ---
(In reply to Jonathan M Davis from comment #0)
> Can we _please_, _please_ make it illegal to put any function attribute
> which could also modify the return type on the left-hand side of the
> function?

I think it would be nice improvement.

> It would be nice to make it so that
> 
> const Bar foo() {...}
> 
> were then the same as
> 
> const(Bar) foo() {...}

There was a discussion in issue 10150 about it.

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