Thanks to the efforts of Jay Lurker, Jonathan Rochkind, and Adam
Solr analyzer filters to normalize ISBNs (to ISBN13s) and LCCNs are now
cleaned up and ready to work with Solr 4.x.
I've extracted the code into a new repo, shined up the README, and provided
a .jar for download and instructions on what to do with it.
Get it while it's hot at
Library Systems Programmer
University of Michigan Library