testRegex "^[\\w]+" []
    ["*** Failers",
     "\201cole"]
    [Nothing,
     Nothing]
,
testRegex "^[\\w]+" [ERROR]
    ["\201cole"]
    [Just [" 0: \201cole"]]
,
testRegex "^[\\w]+" []
    ["*** Failers",
     "\201cole"]
    [Nothing,
     Nothing]
,
testRegex "^[\\W]+" []
    ["\201cole"]
    [Just [" 0: \\xc9"]]
,
testRegex "^[\\W]+" [ERROR]
    ["*** Failers",
     "\201cole"]
    [Just [" 0: *** "],
     Nothing]
,
testRegex "[\\b]" []
    ["\\b",
     "*** Failers",
     "a"]
    [Just [" 0: \\x08"],
     Nothing,
     Nothing]
,
testRegex "[\\b]" [ERROR]
    ["\\b",
     "*** Failers",
     "a"]
    [Just [" 0: \\x08"],
     Nothing,
     Nothing]
,
testRegex "^\\w+" []
    ["*** Failers",
     "\201cole"]
    [Nothing,
     Nothing]
,
testRegex "^\\w+" [ERROR]
    ["\201cole"]
    [Just [" 0: \201cole"]]
,
testRegex "(.+)\\b(.+)" []
    ["\201cole"]
    [Just [" 0: \\xc9cole"],
     Just [" 1: \\xc9"],
     Just [" 2: cole"]]
,
testRegex "(.+)\\b(.+)" [ERROR]
    ["*** Failers",
     "\201cole"]
    [Just [" 0: *** Failers"],
     Just [" 1: *** "],
     Just [" 2: Failers"],
     Nothing]
,
testRegex "\201cole" [caseless]
    ["\201cole",
     "*** Failers",
     "\233cole"]
    [Just [" 0: \\xc9cole"],
     Nothing,
     Nothing]
,
testRegex "\201cole" [ERROR]
    ["\201cole",
     "\233cole"]
    [Just [" 0: \201cole"],
     Just [" 0: \233cole"]]
,
testRegex "\\w" [ERROR]
    []
    [Just ["Capturing subpattern count = 0"],
     Just ["No options"],
     Just ["No first char"],
     Just ["No need char"],
     Just ["Starting byte set: 0 1 2 3 4 5 6 7 8 9 A B C D E F G H I J K L M N O P "]]
,
testRegex "\\w" [ERROR]
    []
    [Just ["Capturing subpattern count = 0"],
     Just ["No options"],
     Just ["No first char"],
     Just ["No need char"],
     Just ["Starting byte set: 0 1 2 3 4 5 6 7 8 9 A B C D E F G H I J K L M N O P "]]
,
testRegex "^[\\xc8-\\xc9]" [ERROR]
    ["\201cole",
     "\233cole"]
    [Just [" 0: \201"],
     Just [" 0: \233"]]
,
testRegex "^[\\xc8-\\xc9]" [ERROR]
    ["\201cole",
     "*** Failers ",
     "\233cole"]
    [Just [" 0: \201"],
     Nothing,
     Nothing]
,
testRegex "\\W+" [ERROR]
    [">>>\\xaa<<<",
     ">>>\\xba<<< "]
    [Just [" 0: >>>"],
     Just [" 0: >>>"]]
,
testRegex "[\\W]+" [ERROR]
    [">>>\\xaa<<<",
     ">>>\\xba<<< "]
    [Just [" 0: >>>"],
     Just [" 0: >>>"]]
,
testRegex "[^[:alpha:]]+" [ERROR]
    [">>>\\xaa<<<",
     ">>>\\xba<<< "]
    [Just [" 0: >>>"],
     Just [" 0: >>>"]]
,
testRegex "\\w+" [ERROR]
    [">>>\\xaa<<<",
     ">>>\\xba<<< "]
    [Just [" 0: \170"],
     Just [" 0: \186"]]
,
testRegex "[\\w]+" [ERROR]
    [">>>\\xaa<<<",
     ">>>\\xba<<< "]
    [Just [" 0: \170"],
     Just [" 0: \186"]]
,
testRegex "[[:alpha:]]+" [ERROR]
    [">>>\\xaa<<<",
     ">>>\\xba<<< ",
     "",
     "/[[:alpha:]][[:lower:]][[:upper:]]/DZLfr_FR "]
    [Just [" 0: \170"],
     Just [" 0: \186"],
     Just ["/[[:alpha:]][[:lower:]][[:upper:]]/DZLfr_FR "],
     Just ["------------------------------------------------------------------"],
     Just ["------------------------------------------------------------------"],
     Just ["Capturing subpattern count = 0"],
     Just ["No options"],
     Just ["No first char"],
     Just ["No need char"]]
,
testRegex " End of testinput3 " []
    []
    []