<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=utf-8"><meta name=Generator content="Microsoft Word 14 (filtered medium)"><style><!--
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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Hello David,<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 class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>thank you very much for looking into this (even more so since I gave up on it already)! </span><span style='font-size:11.0pt;font-family:Wingdings;color:#1F497D'>J</span><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'> I'm quite relieved, that this was not an issue created by my own stupidity.<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 class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Ciao,<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Xavier.<o:p></o:p></span></p><p class=MsoNormal><o:p> </o:p></p><div style='border:none;border-left:solid blue 1.5pt;padding:0cm 0cm 0cm 4.0pt'><div><div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm 0cm 0cm'><p class=MsoNormal><b><span lang=DE style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span lang=DE style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> David Lutterkort [mailto:lutter@watzmann.net] <br><b>Sent:</b> Thursday, November 26, 2015 3:11 AM<br><b>To:</b> Mol, Xavier (SCC)<br><b>Cc:</b> Dominic Cleal; augeas-devel@redhat.com<br><b>Subject:</b> Re: [augeas-devel] Inconsistent matching of multiple predicates (involving last/position)<o:p></o:p></span></p></div></div><p class=MsoNormal><o:p> </o:p></p><div><div><div><p class=MsoNormal>Sorry for the very late reply ...<br><br>On Fri, Aug 28, 2015 at 5:24 AM, Mol, Xavier (SCC) <<a href="mailto:xavier.mol@kit.edu" target="_blank">xavier.mol@kit.edu</a>> wrote:<o:p></o:p></p><p class=MsoNormal>Hi again,<br><br>for some reason I cannot explain, now a couple of things work suddenly as expected:<br><br>augtool> match $master/*[last()]<br>/files/etc/auto.master/3 = +<br>augtool> match $master/*[position() = 2]<br>/files/etc/auto.master/#comment[1] = Sample auto.master file<br>augtool> match $master/*[label() != '#comment'][last()]<br>/files/etc/auto.master/3 = +<br><br><br>Though not everything does...<br><br>augtool> match $master/*[label() != '#comment']<br>/files/etc/auto.master/1 = /misc<br>/files/etc/auto.master/2 = /net<br>/files/etc/auto.master/3 = +<br>augtool> match $master/*[label() != '#comment'][position() = 2]<br> (no matches)<o:p></o:p></p><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal style='margin-bottom:12.0pt'>This is a bona fide bug - "match $master/*[label() != '#comment'][2]" should absolutely return the $master/2 node.<o:p></o:p></p></div><div><p class=MsoNormal style='margin-bottom:12.0pt'>What's going wrong is that the tree has a bunch of 'hidden' nodes (nodes whose label is NULL); they weren't being suppressed properly during the match; in that last match, we actually matched such a hidden node, but when Augeas goes to print the result it acts as if there was no node (hence the name 'hidden')<o:p></o:p></p></div><div><p class=MsoNormal style='margin-bottom:12.0pt'>I've put up <a href="https://github.com/hercules-team/augeas/pull/323">https://github.com/hercules-team/augeas/pull/323</a> that fixes that issue.<o:p></o:p></p></div><div><p class=MsoNormal>David<o:p></o:p></p></div></div></div></div></div></div></body></html>