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    Like in @Kusalananda's now deleted answer, that does however not report lines that contain both sequences of 1 to 3 whitespace and sequences of more than 4 whitespace. Commented Oct 9, 2020 at 13:39
  • But is that not a contradiction? OTOH we want (1,3) spaces but don't want more than 4. Such cases needed to be worded unambiguously and not be left as a responsibility of the responders. At least the testcase shud show such at least. Commented Oct 9, 2020 at 13:59