<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40"><head><meta http-equiv=Content-Type content="text/html; charset=us-ascii"><meta name=Generator content="Microsoft Word 14 (filtered medium)"><style><!--
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</o:shapelayout></xml><![endif]--></head><body lang=NL link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span lang=EN-GB>Hi,<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-GB><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-GB>I am working on bug 88576, regarding IFERROR and IFNA not giving expected results when not all mandatory arguments are given.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-GB>On checking their behaviour in various cases, I discovered that IFERROR, IFNA and IF do not handle empty arguments as they should be.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-GB>With empty argument I mean e.g. -IFERROR(something;) of IF(statement;;argument).<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-GB>With IFERROR and IFNA these situation should return an empty value to be compatible with Excel.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-GB>With IF, the behaviour is described in ODFF1.2.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-GB><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-GB>My question is, where should this behaviour best be put in the code?<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-GB>In class FormulaCompiler, e.g. in FormulaCompiler::Factor(), in ScInterpreter::Interpret(), in the functions themselves (ScInterpreter::ScIf() and ScInterpreter::ScIfError() or somewhere else?<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-GB>And as these functions are jump functions, how best to access/modify the stack or FormulaToken?<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-GB><o:p> </o:p></span></p><p class=MsoNormal><span style='mso-fareast-language:NL'>Winfried<o:p></o:p></span></p><p class=MsoNormal><o:p> </o:p></p></div></body></html>