NotAny skips whitespace

[grv87]

Documentation:

it only verifies that the specified parse expression does not match at the current position. Also, NotAny does not skip over leading whitespace

Tests show that NotAny actually skips whitespace and matches parse expression not just in current position, but after white space too.

Test cases:

from pyparsing import *
import unittest
class TestNotAny(unittest.TestCase, pyparsing_test.TestParseResultsAsserts):
    def test_not_any_chars(self):
        ast = Literal("FOO") + NotAny(Char(alphanums)) + Literal("BAR")
        self.assertParseAndCheckList(ast, "FOO BAR", ["FOO", "BAR"])
        # self.assertRaisesParseException(ast, "FOOBAR")
    def test_not_any_chars_with_string(self):
        ast = Literal("FOO") + NotAny("B") + Literal("BAR")
        self.assertParseAndCheckList(ast, "FOO BAR", ["FOO", "BAR"])
        # self.assertRaisesParseException(ast, "FOOBAR")
    def test_not_any_chars_worked_around(self):
        ast = Literal("FOO") + NotAny(Char(alphanums).leave_whitespace()) + Literal("BAR")
        self.assertParseAndCheckList(ast, "FOO BAR", ["FOO", "BAR"])
        self.assertRaisesParseException(ast, "FOOBAR")

The first 2 cases fail, with strange error message:

pyparsing.exceptions.ParseException: Found unwanted token, 'B', found ' '

IMO, NotAny should set skipWhitespace on the underlying expression, otherwise the whole idea doesn't work.
Maybe not setting it could be justified when ParserElement is used (changing skipWhitespace would require creating a copy of the element, and then it's better if the user does it by himself). But what's the reason not to set skipWhitespace when a string is passed?