is this considered inconsistency?

[mw]

https://run.dlang.io/is/VOGlGN

void main()
{
     import std.stdio: writeln;
     {
         // example from "Introduction to Algorithms" Cormen et 
al., p 146
         int[] a = [ 4, 1, 3, 2, 16, 9, 10, 14, 8, 7 ];

         foreach (i;   0 ..  1 ) writeln(i);  // 0
         foreach (i;   0 ..  0 ) writeln(i);  // no output
         foreach (i;   0 .. -1 ) writeln(i);  // no output

         foreach (i; a[0 ..  1]) writeln(i);  // 4
         foreach (i; a[0 ..  0]) writeln(i);  // no output
         foreach (i; a[0 .. -1]) writeln(i);  // Range violation
     }
}

Why can't the a[0 .. -1] just return empty range, when end <= 
start, as in a[0 ..  0]? and also in foreach (i;   0 .. -1 )?