Add test for converting '\$' to '$' in the lexer.

Author: cmtice

llvm/utils/lit/tests/unit/ShUtil.py

@@ -29,7 +29,6 @@ def test_quoting(self):
         self.assertEqual(self.lex(""" "" "" """), ["", ""])
         self.assertEqual(self.lex(""" a\\ b """, win32Escapes=True), ["a\\", "b"])
 
-
 class TestShParse(unittest.TestCase):
     def parse(self, str):
         return ShParser(str).parse()