t / t4135 / diff-with tab.diffon commit Merge branch 'mk/doc-git-gui-display-untracked' (b809658)
   1--- post        image.txt.orig  2010-08-18 20:13:31.616002255 -0500
   2+++ post        image.txt       2010-08-18 20:13:31.616002255 -0500
   3@@ -1 +1 @@
   4-preimage
   5+postimage