................
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Ran 16 tests in 0.004s

OK
<lex_mode_e DQ 6>
(token id:Char_Literals val:'foo bar' span_id:0)
(token id:Char_OneChar val:'\\n' span_id:1)
(token id:Left_SingleQuote val:"'" span_id:0)
[(Char_Literals, 'newline '), (Char_OneChar, '\\n'), (Char_Literals, ' NUL '), (Char_OneChar, '\\0'), (Char_Literals, ' octal '), (Char_Octal4, '\\0377'), (Char_Literals, ' hex '), (Char_Hex, '\\x00')]
[(Char_Literals, 'unicode '), (Char_Unicode4, '\\u0065'), (Char_Literals, ' '), (Char_Unicode8, '\\U00000065')]
[(Char_BadBackslash, '\\'), (Char_Literals, 'd '), (Char_OneChar, '\\e'), (Char_Literals, ' '), (Char_OneChar, '\\f'), (Char_Literals, ' '), (Char_BadBackslash, '\\'), (Char_Literals, 'g')]
<function _MatchEchoToken_Fast at 0x7f31ce10bb18>
[(PS_Literals, 'foo')]
[(PS_Subst, '\\h'), (PS_Literals, ' '), (PS_Subst, '\\w'), (PS_Literals, ' '), (PS_Subst, '\\$')]
P '[^\\\\\\0]+'