[Issue 19642] std.range.slide!(No.withPartial) on lengthless forward range: get empty when expecting one window

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=19642

Jon Degenhardt <jrdemail2000-dlang at yahoo.com> changed:

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--- Comment #1 from Jon Degenhardt <jrdemail2000-dlang at yahoo.com> ---
Another example (encountered writing nlp code manipulating ngrams):

"ab cd".splitter(' ').slide!(No.withPartial)(2)

Should be [["ab", "cd"]], actual is [].

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