xml - xmllint failing to properly query with xpath -


i'm trying query xml file generated adium. xmlwf says it's formed. using xmllint's debug option following:

$ xmllint --debug doc.xml document version=1.0 encoding=utf-8 url=doc.xml standalone=true   element chat     default namespace href=http://purl.org/net/ulf/ns/0.4-02     attribute account       text         content=foo@bar.com     attribute service       text compact         content=msn     text compact       content=      element event       attribute type

everything seems parse fine. however, when try query simplest things, don't anything:

$ xmllint --xpath '/chat' doc.xml  xpath set empty

what's happening? running exact same query using xpath returns correct results (however no newline between results). doing wrong or xmllint not working properly?

here's shorter, anonymized version of xml shows same behavior:

<?xml version="1.0" encoding="utf-8" ?> <chat xmlns="http://purl.org/net/ulf/ns/0.4-02" account="foo@bar.com" service="msn"> <event type="windowopened" sender="foo@bar.com" time="2011-11-22t00:34:43-03:00"></event> <message sender="foo@bar.com" time="2011-11-22t00:34:43-03:00" alias="foo"><div><span style="color: #000000; font-family: helvetica; font-size: 12pt;">hi</span></div></message> </chat>

i don't use xmllint, think reason xpath isn't working because doc.xml file using default namespace (http://purl.org/net/ulf/ns/0.4-02).

from can see, have 2 options.

a. use xmllint in shell mode , declare namespace prefix. can use prefix in xpath.

    xmllint --shell doc.xml     / > setns x=http://purl.org/net/ulf/ns/0.4-02     / > xpath /x:chat

b. use local-name() match element names.

    xmllint --xpath /*[local-name()='chat']

you may want use namespace-uri()='http://purl.org/net/ulf/ns/0.4-02' along local-name() sure return intending return.


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