TREX python extension for HTML attribute extraction

How is the TREX python extension for HTML attribute extraction supposed to work?
I activated this extension and indexed an HTML document containing:
<HTML>
<HEAD>
<META content="debian, GNU, linux, unix" name=Keywords>
<HEAD>
<HTML>
Why when submitting the query "unix" this document is not found by the system?
(TREX version 6.1.11.02)
Davide

The trick doesn't work on my system (TREX v. 6.1.11.02).
1) This is the edited line in getDCAttributes.py:
knownAttributes = ['description','Keywords']
2) Only the HTML Attribute Extractor extension is activated in extensions.py. In particular, the Dublin Core extension is deactivated.
3) This is the pythonextension section of TREXPreprocessor.ini:
extensiontype= beforeHTTP
4) This is the parametrization of the newly created property in CM:
Unique ID: html_keywords
Description: not set
Property ID: Keywords
Namespace Alias: trilog
Type: String
Group: html
Mandatory: not checked
Multi-Valued: not checked
Read Only: not checked
Maintainable: not checked
Indexable: checked
Default Value: not set
Allowed Values: not set
Key for Label: not set
Meta Data Extension: not set
Folder Validity Patterns: /
Document Validity Patterns: /
Resource Types: not set
Mime Types: not set
Default Sorting Ascending: not set
Label Icon: not set
Hidden: not checked
Dependencies: not checked
Additional Metadata: not set
Property Renderer: not set
Virtual: not checked
Composed of: not set
Comparator Class: not set
5) I've added this property in the parameters Allowed Predefined Properties and Predefined Properties under Content Management -> User Interface -> Search
6) Now it's possible to filter by the Keywords predefined property in the Search UI, but no matches are ever found.
7) No significant message is found in PythonExtension.log:
# running global extensions.py at Tue Jul 12 11:13:03 2005
### import getHtmlAttributes
# running global extensions.py at Tue Jul 12 11:13:04 2005
### import getHtmlAttributes
8) I've run another test activating the Dublin Core extension in extensions.py as well, and setting extensiontype to beforeLEXICON in TREXPreprocessor.ini. Nevertheless it didn't work.
9) Here's some DC extension's output:
### Parse document with key: '/davide_test/attributi/GNU_Emacs.htm'
### extracted attributes: []
This is the GNU_Emacs.htm's <head>:
<META content=emacs name=keywords>
Cheers, Davide

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TREX python extension for HTML attribute extraction

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