unicode.splitWhitespace() and strutils.splitWhitespace() have different results for ASCII string

[simonkrauter]

Description

unicode.splitWhitespace() returns empty strings, but strutils.splitWhitespace() not.

Test program:

import std / strutils
import std / unicode

let s = "  foo \t bar  baz  "
echo strutils.splitWhitespace(s)
echo unicode.splitWhitespace(s)

Nim Version

Nim Compiler Version 2.0.4 [Linux: amd64]
Compiled at 2024-03-28
Copyright (c) 2006-2023 by Andreas Rumpf

git hash: b47747d
active boot switches: -d:release

Current Output

@["foo", "bar", "baz"]
@["", "", "foo", "", "", "bar", "", "baz", "", ""]

Expected Output

Two times the same output.

Possible Solution

To me it looks like unicode.splitWhitespace() should be adapted to the behaviour of strutils.splitWhitespace(), because the behavior of strutils.splitWhitespace() is documented (https://github.com/nim-lang/Nim/blob/version-2-0/lib/pure/strutils.nim#L698).

Additional Information

No response