OK. I’m done with it, and this time I mean it.
I’ve updated and improved the lc normalization code, documented the algorithm, and put it all into Google Code. In the next couple weeks, I’ll be turning it into a Solr text filter so we can do some decent sorting on call-number search results.
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Thanks for sticking it up on the web. I suspect Blacklight will want that at some point.
I wrote a bunch of LC parsing (and dewey, too!) to get to shelving keys. It’s in the CallNumUtils of the solrmarc project.