X-Git-Url: https://git.tokkee.org/?a=blobdiff_plain;f=Documentation%2Ftechnical%2Fpack-format.txt;h=1803e64e465fa4f8f0fe520fc0fd95d0c9def5bd;hb=c33e30675b601d6707dc4022a8f64812509c7566;hp=aa87756a55dfe6337f06b8aece0ed88d092036b1;hpb=67cdec1e58f1f9bc17d500b04e856042e0b2bf59;p=git.git

diff --git a/Documentation/technical/pack-format.txt b/Documentation/technical/pack-format.txt
index aa87756a5..1803e64e4 100644
--- a/Documentation/technical/pack-format.txt
+++ b/Documentation/technical/pack-format.txt
@@ -103,10 +103,24 @@ Pack file entry: <+
      packed object data:
         If it is not DELTA, then deflated bytes (the size above
 		is the size before compression).
-	If it is DELTA, then
+	If it is REF_DELTA, then
 	  20-byte base object name SHA1 (the size above is the
 		size of the delta data that follows).
           delta data, deflated.
+	If it is OFS_DELTA, then
+	  n-byte offset (see below) interpreted as a negative
+		offset from the type-byte of the header of the
+		ofs-delta entry (the size above is the size of
+		the delta data that follows).
+	  delta data, deflated.
+
+     offset encoding:
+	  n bytes with MSB set in all but the last one.
+	  The offset is then the number constructed by
+	  concatenating the lower 7 bit of each byte, and
+	  for n >= 2 adding 2^7 + 2^14 + ... + 2^(7*(n-1))
+	  to the result.
+
 
 
 = Version 2 pack-*.idx files support packs larger than 4 GiB, and