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</o:shapelayout></xml><![endif]--></head><body lang=NL link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Hi,<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p style='margin:0cm;margin-bottom:.0001pt'><span style='font-size:9.0pt;font-family:"Sans Serif","serif"'>> module Main(main) where <o:p></o:p></span></p><p style='margin:0cm;margin-bottom:.0001pt;-qt-block-indent:0;-qt-user-state:0'><span style='font-size:9.0pt;font-family:"Sans Serif","serif"'>> <o:p></o:p></span></p><p style='margin:0cm;margin-bottom:.0001pt;-qt-block-indent:0;-qt-user-state:0'><span style='font-size:9.0pt;font-family:"Sans Serif","serif"'>> import Text.ParserCombinators.Parsec<o:p></o:p></span></p><p style='margin:0cm;margin-bottom:.0001pt;-qt-block-indent:0;-qt-user-state:0'><span style='font-size:9.0pt;font-family:"Sans Serif","serif"'>><o:p> </o:p></span></p><p style='margin:0cm;margin-bottom:.0001pt;-qt-block-indent:0;-qt-user-state:0'><span style='font-size:9.0pt;font-family:"Sans Serif","serif"'>> parseToNewLine = do<o:p></o:p></span></p><p style='margin:0cm;margin-bottom:.0001pt;-qt-block-indent:0;-qt-user-state:0'><span style='font-size:9.0pt;font-family:"Sans Serif","serif"'>> line <- manyTill anyChar newline<o:p></o:p></span></p><p style='margin:0cm;margin-bottom:.0001pt;-qt-block-indent:0;-qt-user-state:0'><span style='font-size:9.0pt;font-family:"Sans Serif","serif"'>> return line<o:p></o:p></span></p><p style='margin:0cm;margin-bottom:.0001pt;-qt-block-indent:0;-qt-user-state:0'><span style='font-size:9.0pt;font-family:"Sans Serif","serif"'>><o:p> </o:p></span></p><p style='margin:0cm;margin-bottom:.0001pt;-qt-block-indent:0;-qt-user-state:0'><span style='font-size:9.0pt;font-family:"Sans Serif","serif"'>> keyValue = do<o:p></o:p></span></p><p style='margin:0cm;margin-bottom:.0001pt;-qt-block-indent:0;-qt-user-state:0'><span style='font-size:9.0pt;font-family:"Sans Serif","serif"'>> fieldName <- many letter <o:p></o:p></span></p><p style='margin:0cm;margin-bottom:.0001pt;-qt-block-indent:0;-qt-user-state:0'><span style='font-size:9.0pt;font-family:"Sans Serif","serif"'>> spaces<o:p></o:p></span></p><p style='margin:0cm;margin-bottom:.0001pt;-qt-block-indent:0;-qt-user-state:0'><span style='font-size:9.0pt;font-family:"Sans Serif","serif"'>> char '='<o:p></o:p></span></p><p style='margin:0cm;margin-bottom:.0001pt;-qt-block-indent:0;-qt-user-state:0'><span style='font-size:9.0pt;font-family:"Sans Serif","serif"'>> spaces<o:p></o:p></span></p><p style='margin:0cm;margin-bottom:.0001pt;-qt-block-indent:0;-qt-user-state:0'><span style='font-size:9.0pt;font-family:"Sans Serif","serif"'>> fieldValue <- parseToNewLine <o:p></o:p></span></p><p style='margin:0cm;margin-bottom:.0001pt;-qt-block-indent:0;-qt-user-state:0'><span style='font-size:9.0pt;font-family:"Sans Serif","serif"'>> return (fieldName,fieldValue)<o:p></o:p></span></p><p style='margin:0cm;margin-bottom:.0001pt;-qt-block-indent:0;-qt-user-state:0'><span style='font-size:9.0pt;font-family:"Sans Serif","serif"'>><o:p> </o:p></span></p><p style='margin:0cm;margin-bottom:.0001pt;-qt-block-indent:0;-qt-user-state:0'><span style='font-size:9.0pt;font-family:"Sans Serif","serif"'>> main = parseTest keyValue "key=\n"<o:p></o:p></span></p><p style='margin:0cm;margin-bottom:.0001pt;-qt-block-indent:0;-qt-user-state:0'><span style='font-size:9.0pt;font-family:"Sans Serif","serif"'>><o:p> </o:p></span></p><p style='margin:0cm;margin-bottom:.0001pt;-qt-block-indent:0;-qt-user-state:0'><span style='font-size:9.0pt;font-family:"Sans Serif","serif"'>> I don’t understand why te code above doesn’t parse to (“key”,””)<o:p></o:p></span></p><p style='margin:0cm;margin-bottom:.0001pt;-qt-paragraph-type:empty;-qt-block-indent:0'><span style='font-size:9.0pt;font-family:"Sans Serif","serif"'> <o:p></o:p></span></p><p style='margin:0cm;margin-bottom:.0001pt;-qt-block-indent:0;-qt-user-state:0'><span style='font-size:9.0pt;font-family:"Sans Serif","serif"'>Because the newline is already consumed by the `spaces`. So parseToNewLine gets an empty string as input, and fails on that.<o:p></o:p></span></p><p style='margin:0cm;margin-bottom:.0001pt;-qt-paragraph-type:empty;-qt-block-indent:0'><span style='font-size:9.0pt;font-family:"Sans Serif","serif"'> <o:p></o:p></span></p><p style='margin:0cm;margin-bottom:.0001pt;-qt-block-indent:0;-qt-user-state:0'><span style='font-size:9.0pt;font-family:"Sans Serif","serif"'>> parseToNewLine “\n” parses to “"<o:p></o:p></span></p><p style='margin:0cm;margin-bottom:.0001pt;-qt-block-indent:0;-qt-user-state:0'><span style='font-size:9.0pt;font-family:"Sans Serif","serif"'>><o:p> </o:p></span></p><p style='margin:0cm;margin-bottom:.0001pt;-qt-block-indent:0;-qt-user-state:0'><span style='font-size:9.0pt;font-family:"Sans Serif","serif"'>> parseTest keyValue “a=b\n” works fine and parses to (“a”,”b”) <o:p></o:p></span></p><p style='margin:0cm;margin-bottom:.0001pt;-qt-paragraph-type:empty;-qt-block-indent:0'><span style='font-size:9.0pt;font-family:"Sans Serif","serif"'> <o:p></o:p></span></p><p style='mso-margin-top-alt:0cm;margin-right:0cm;margin-bottom:12.0pt;margin-left:0cm;-qt-block-indent:0;-qt-user-state:0'><span style='font-size:9.0pt;font-family:"Sans Serif","serif"'>The input of parseToNewLine must contain a newline, or it fails. In the last example, the `spaces` after `char '='` stops at reaching the 'b', so the newline remains. In the first (problematic) example, all the remaining input after the '=' consists of whitespace.<o:p></o:p></span></p><p style='mso-margin-top-alt:0cm;margin-right:0cm;margin-bottom:12.0pt;margin-left:0cm'><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Thanks. This solves it. spaces does more then just reading spaces.<o:p></o:p></span></p><p style='mso-margin-top-alt:0cm;margin-right:0cm;margin-bottom:12.0pt;margin-left:0cm'><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Kees<o:p></o:p></span></p><p style='mso-margin-top-alt:0cm;margin-right:0cm;margin-bottom:12.0pt;margin-left:0cm'><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p></div></body></html>