std.algorithm.among

[Timon Gehr via Digitalmars-d-learn]

On 07/13/2014 03:09 PM, bearophile wrote:
> Timon Gehr:
>
>> It works with filter, so I think it should just work with until as well.
>
> So do you suggest me to open a bug report where I ask "among" to return
> a bool, or do you suggest to ask for an enhancement of "until", or what?
>
> Bye,
> bearophile

I am saying the following code implementing 'until' in std.algorithm is 
at fault:

     private bool predSatisfied() // <-- don't say bool here
     {
         static if (is(Sentinel == void))
             return unaryFun!pred(_input.front); // or cast here
         else
             return startsWith!pred(_input, _sentinel); // and here
     }