Below code is outputting (paraphrased):

Entry XML for user1
   apps:login for user1
   apps:login for user2
Entry XML for user2
   apps:login for user1
   apps:login for user2
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I'm expecting it to output:

Entry XML for user1
   apps:login for user1
Entry XML for user2
   apps:login for user2
[download]

What am I doing wrong? It looks like it is searching at the root of the document each time, regardless of what I set as a context node. Code snippet and data set. (http://pastebin.com/m25b1509d)

#!/usr/bin/perl

use XML::LibXML;

my $content = do { local($/); <DATA>; };

$parser = XML::LibXML->new();
$doc    = $parser->parse_string($content);

my $xc = XML::LibXML::XPathContext->new();
$xc->registerNs( atom       => "http://www.w3.org/2005/Atom" );
$xc->registerNs( app        => "http://www.w3.org/2007/app" );
$xc->registerNs( gd         => "http://schemas.google.com/g/2005" );
$xc->registerNs( gcontact   => "http://schemas.google.com/contact/2008
+" );
$xc->registerNs( batch      => "http://schemas.google.com/gdata/batch"
+ );
$xc->registerNs( openSearch => "http://a9.com/-/spec/opensearchrss/1.0
+/" );

foreach my $entry ( $xc->findnodes( '/atom:feed/atom:entry', $doc ) ) 
+{
    print "entry = '", $entry->toString(1), "'\n";

    my @logins = $xc->findnodes( "//apps:login", $entry );
    print join( "\n", @logins ), "\n";
}


__END__
<?xml version="1.0" encoding="UTF-8"?>
<feed xmlns="http://www.w3.org/2005/Atom" xmlns:openSearch="http://a9.
+com/-/spec/opensearchrss/1.0/" xmlns:apps="http://schemas.google.com/
+apps/2006" xmlns:gd="http://schemas.google.com/g/2005">
  <id>https://apps-apis.google.com/a/feeds/mst.edu/user/2.0</id>
  <updated>1970-01-01T00:00:00.000Z</updated>
  <category scheme="http://schemas.google.com/g/2005#kind" term="http:
+//schemas.google.com/apps/2006#user"/>
  <title type="text">Users</title>
  <link rel="next" type="application/atom+xml" href="https://apps-apis
+.google.com/a/feeds/mst.edu/user/2.0?startUsername=norbert"/>
  <link rel="http://schemas.google.com/g/2005#feed" type="application/
+atom+xml" href="https://apps-apis.google.com/a/feeds/mst.edu/user/2.0
+"/>
  <link rel="http://schemas.google.com/g/2005#post" type="application/
+atom+xml" href="https://apps-apis.google.com/a/feeds/mst.edu/user/2.0
+"/>
  <link rel="self" type="application/atom+xml" href="https://apps-apis
+.google.com/a/feeds/mst.edu/user/2.0"/>
  <openSearch:startIndex>1</openSearch:startIndex>
  <entry>
    <id>https://apps-apis.google.com/a/feeds/mst.edu/user/2.0/user1</i
+d>
    <updated>1970-01-01T00:00:00.000Z</updated>
    <category scheme="http://schemas.google.com/g/2005#kind" term="htt
+p://schemas.google.com/apps/2006#user"/>
    <title type="text">user1</title>
    <link rel="self" type="application/atom+xml" href="https://apps-ap
+is.google.com/a/feeds/mst.edu/user/2.0/user1"/>
    <link rel="edit" type="application/atom+xml" href="https://apps-ap
+is.google.com/a/feeds/mst.edu/user/2.0/user1"/>
    <apps:login userName="user1" suspended="false" ipWhitelisted="fals
+e" admin="false" changePasswordAtNextLogin="false" agreedToTerms="tru
+e"/>
    <apps:quota limit="7168"/>
    <apps:name familyName="Last1" givenName="First1"/>
    <gd:feedLink rel="http://schemas.google.com/apps/2006#user.nicknam
+es" href="https://apps-apis.google.com/a/feeds/mst.edu/nickname/2.0?u
+sername=user1"/>
    <gd:feedLink rel="http://schemas.google.com/apps/2006#user.emailLi
+sts" href="https://apps-apis.google.com/a/feeds/mst.edu/emailList/2.0
+?recipient=user1%40mst.edu"/>
  </entry>
  <entry>
    <id>https://apps-apis.google.com/a/feeds/mst.edu/user/2.0/user2</i
+d>
    <updated>1970-01-01T00:00:00.000Z</updated>
    <category scheme="http://schemas.google.com/g/2005#kind" term="htt
+p://schemas.google.com/apps/2006#user"/>
    <title type="text">user2</title>
    <link rel="self" type="application/atom+xml" href="https://apps-ap
+is.google.com/a/feeds/mst.edu/user/2.0/user2"/>
    <link rel="edit" type="application/atom+xml" href="https://apps-ap
+is.google.com/a/feeds/mst.edu/user/2.0/user2"/>
    <apps:login userName="user2" suspended="false" ipWhitelisted="fals
+e" admin="false" changePasswordAtNextLogin="false" agreedToTerms="tru
+e"/>
    <apps:quota limit="7168"/>
    <apps:name familyName="Last2" givenName="First2"/>
    <gd:feedLink rel="http://schemas.google.com/apps/2006#user.nicknam
+es" href="https://apps-apis.google.com/a/feeds/mst.edu/nickname/2.0?u
+sername=user2"/>
    <gd:feedLink rel="http://schemas.google.com/apps/2006#user.emailLi
+sts" href="https://apps-apis.google.com/a/feeds/mst.edu/emailList/2.0
+?recipient=user2%40mst.edu"/>
  </entry>
</feed>
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