Re: [PATCH] diff-raw format update take #2.

+  (1) a colon.
+  (2) mode for "src"; 000000 if creation or unmerged.
+  (3) a space.
+  (4) mode for "dst"; 000000 if deletion or unmerged.
+  (5) a space.
+  (6) sha1 for "src"; 0{40} if creation or unmerged.
+  (7) a space.
+  (8) sha1 for "dst"; 0{40} if creation, unmerged or "look at work tree".
+  (9) status, followed by similarlity index number only for C and R.
+ (10) a tab or a NUL when '-z' option is used.
+ (11) path for "src"

What if the path has embedded tabs or spacs?  I skimmed over the patch
but didn't see anything to deal with this (I didn't apply it and check
the result though it might have been outside the patch).