Function pointers/delegates default args were stealth removed?

[foobar]

On Monday, 27 August 2012 at 21:29:06 UTC, Jonathan M Davis wrote:
> On Monday, August 27, 2012 23:22:39 foobar wrote:
>> All true, except one crucial fact: DMD gets critical bug fixes
>> incorporated with new features in the same release. This 
>> leaves a
>> poor choice to the programmer, either he sticks with older
>> compiler version and can't get any critical bug fixes, or he
>> updates the compiler to latest version with all the bug fixes 
>> but
>> risks breakage of code due to new features (which is _exactly_
>> what happened to manu).
>
> Except that the change which is causing Manu problems _isn't_ a 
> new feature.
> It's a bug fix. So, better versioning wouldn't necessarily have 
> helped him any
> at all. At best, if we had a more complex versioning scheme, it 
> could be
> decided that the bug fix was potentially disruptive enough that 
> it should only
> be fixed in a more major release, but _every_ bug fix risks 
> breaking code,
> especially when code could be relying on the buggy behavior.
>
> - Jonathan M Davis

I guess your definition of stable is different than mine.
"Accepts invalid" bugs should never be fixed on the current 
stable branch as they introduce a breaking change unless it's a 
matter of a security problem.

All compilers have a list of accepts invalid bugs and no one 
"fixes" them on the stable/release branch exactly because it will 
break existing code as evidently shown by manu's posts.
Python introduced version 3 to handle this and Ruby had version 
1.9, all the while both the stable and the next-version branches 
got bug-fixes.

D was moved to Git long ago which trivially allows such branching 
schemes so there really no excuse to stick with the current 
flawed system except inertia.