t / t4135 / diff-plain.diffon commit t8001/t8002: blame: demonstrate acceptance of bogus -L,+0 and -L,-0 (82cd7e5)
   1--- postimage.txt.orig  2010-08-18 20:13:31.432002255 -0500
   2+++ postimage.txt       2010-08-18 20:13:31.432002255 -0500
   3@@ -1 +1 @@
   4-preimage
   5+postimage