Changing the behavior of the comma operator

[ed]

On Thursday, 27 March 2014 at 11:32:45 UTC, Kagamin wrote:
> On Wednesday, 26 March 2014 at 16:21:01 UTC, H. S. Teoh wrote:
>> What we're proposing is to get rid of things like this:
>>
>> 	int x = 1, 5;	// hands up, how many understand what this does?
>
> This proposal gets rid of this while keeping the comma operator.

+1 to dropping to comma operator.

This is what I would like to see illegal, forcing a refactor of 
code:

  if (((vertex= null), same.vertices)) for (blah){}


Every time it catches me out and I misread the code to be:

if(vertex == null && same.vertices) for (blah) {}


Cheers,
ed