glawson0 commented on pull request #157:
URL: https://github.com/apache/lucene/pull/157#issuecomment-871334072


   Simplified `AutomatonToTokenStream` and added license comment.
   
   I beasted the random tests a few hundred times and found 2 issues.
   1)When completely separated edges get connected it can introduce gaps and 
cause book keeping errors.
   2)The `checkGeneralization` test can miss paths where a hole in the 
unflattened graph would cross multiple nodes.
   
   The logic to navigate around issue 2 slows down `checkGeneralization` to the 
point I don't think it is useful so I commented that portion out. The test that 
calls it still checks if asserts are getting hit, and `testPathsNotLost` is 
checking if strings to make an automaton are accepted after the automaton is 
flattened.


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