$ ./overlapping_factor.sh c611109 7f20e20
                    Commit info                           |    Accum.   |    Total    |   Overlap
   #                   Hash                    (+)   (-)  |  (+)   (-)  |  (+)   (-)  | (rel) (tot)
==== ======================================== ===== ===== | ===== ===== | ===== ===== | ===== =====
   1 c611109ed71f06e7630275753d059923c78d519d   228   220 |   228   220 |   228   220 |     0     0
   2 d81a94807b44d094309b30ff1e068173dea65689   531   531 |   759   751 |   759   751 |     0     0
   3 dc87fd4b3f73b3d2e8cec6f1d456822e0aa1d696    14     4 |   773   755 |   773   755 |     0     0
   4 a6674bf8a4afddd1690aeace2f8120f41614be39   162   162 |   935   917 |   935   917 |     0     0
   5 0ae27225f5f7d5c2c7d4674270671836d9242381    11     4 |   946   921 |   946   921 |     0     0
   6 ddf72dd60d7ab37e85f91525ecfd9249328ca0a6   345   633 |  1291  1554 |  1291  1554 |     0     0
   7 106c64ac24084842d4f4c887a3c18646d48ffb92    35    35 |  1326  1589 |  1326  1589 |     0     0
   8 35bc26b51641c0a8a54e206a8c521dcdf5a4fee1   722   722 |  2048  2311 |  2048  2311 |     0     0
   9 46606b3dddbb9153553e15ca4117adce4e889a74   220   263 |  2268  2574 |  2268  2574 |     0     0
  10 4af4d709a424e8b589d04586f868298f09534ffa     2     0 |  2270  2574 |  2270  2574 |     0     0
  11 be396eddf0e74562ef6b4153cd796e90e61a7756  1623     8 |  3893  2582 |  3893  2582 |     0     0
  12 1f13dff1a7b7764af5c3f1ae15b9b84e4fb1331d   140   127 |  4033  2709 |  4033  2709 |     0     0
  13 9f82c9aece89ef3667dc81e0e740c1b72d9b7aea    45   102 |  4078  2811 |  4073  2806 |     5     5
  14 0ab106f41ce98f31c404a2f1b9c749fdaa38108a     0   150 |  4078  2961 |  4073  2956 |     0     5
  15 7f20e2071c147d94d9b7a239694422ab4550561e    21     0 |  4099  2961 |  4094  2956 |     0     5

Summary:
  - by commits 6.667% (1/15) have overlapping
  - by lines 0.071% (5/7050) are overlapping

OVERLAPPING FACTOR (weighted, product of the 2 above): 0.473