User blog comment:SuperSpruce/Proposed fix to T array function to make it work past Gamma 0/@comment-36984051-20190623153224/@comment-36984051-20190626180424

The scanning process starts at the leftmost entry, and then after seeing a 0 jumps to the next entry. If it runs into a nonzero entry, and sees there is a comma immediately before it, the process applies the catastrophic rule to that nonzero entry.