1Another example from Hunt and McIlroy, 2“An Algorithm for Differential File Comparison.” 3https://www.cs.dartmouth.edu/~doug/diff.pdf 4 5Anchored diff gives up on finding anything, 6since there are no unique lines. 7 8-- old -- 9a 10b 11c 12a 13b 14b 15a 16-- new -- 17c 18a 19b 20a 21b 22c 23-- diff -- 24diff old new 25--- old 26+++ new 27@@ -1,7 +1,6 @@ 28-a 29-b 30-c 31-a 32-b 33-b 34-a 35+c 36+a 37+b 38+a 39+b 40+c