Calling std.algorithm.splitter with a non-empty string and an empty delimiter causes it to produce an infinite range of empty strings. This, in turn, causes std.array.split to get into an infinite loop when it is called with an empty delimiter.

When the delimiter is empty, std.algorithm.splitter should return a range containing 1-element ranges of each element in the original range. (Cf. Perl's split(//, "string").) At the very least, std.array.split should not have an infinite loop.