[bknr-ticket] #28: Improve templater namespace handling

[bknr]

#28: Improve templater namespace handling
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 Reporter:  hhubner      |       Owner:  hhubner      
     Type:  enhancement  |      Status:  new          
 Priority:  major        |   Milestone:  bknr-reloaded
Component:  bos          |     Version:               
 Keywords:               |  
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 The templater does not detect if there is a mismatch between a declared
 namespace URL and the URL used by templates.  This makes tracking errors
 harder than it should be, as template functions are simply not expanded if
 the URLs do not match.  Instead, the website definition should include a
 list of all namespaces known and warn if a template makes use of an
 unknown namespace.

 When encountering tag with an explicit namespace, the template currently
 removes the namespace local-name before emitting the tag.  This is clearly
 wrong, the local name should be passed through unmodified.  This requires
 that the template parser determines the local names of namespaces of
 parsed templates and map the namespace URI back to the local name.

 It may even be easier to abandon the XMLS representation and move to CLOS
 DOM, but maybe not.

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Ticket URL: <http://trac.common-lisp.net/bknr/ticket/28>
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