afs commented on issue #1614:
URL: https://github.com/apache/jena/issues/1614#issuecomment-1310233335

   > in 
https://github.com/apache/jena/blob/main/jena-arq/src/main/java/org/apache/jena/sparql/algebra/optimize/TransformPathFlattern.java#L35
 there is a comment that P_Alt is not converted into OpUnion, but do you know 
why? What was the downside of this particular optimisation?
   
   No idea.
   
   It might be a bad idea if the expression either side was complex.
   
   Seems reasonable if the LHS and RHS are simple.
   
   [JENA-2325](https://issues.apache.org/jira/browse/JENA-2325)
   May be: [JENA-1300](https://issues.apache.org/jira/browse/JENA-1300)
   


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