diff -r 12f727a5b434 -r 11150176a000 tests/test-help.t
--- a/tests/test-help.t	Mon Dec 14 15:55:12 2015 -0500
+++ b/tests/test-help.t	Fri Dec 18 09:57:35 2015 -0500
@@ -885,9 +885,11 @@
       Changegroups are representations of repository revlog data, specifically
       the changelog, manifest, and filelogs.
   
-      There are 2 versions of changegroups: "1" and "2". From a high-level, they
-      are almost exactly the same, with the only difference being a header on
-      entries in the changeset segment.
+      There are 3 versions of changegroups: "1", "2", and "3". From a high-
+      level, versions "1" and "2" are almost exactly the same, with the only
+      difference being a header on entries in the changeset segment. Version "3"
+      adds support for exchanging treemanifests and includes revlog flags in the
+      delta header.
   
       Changegroups consists of 3 logical segments:
   
@@ -941,7 +943,7 @@
       The *length* field is the byte length of the remaining 3 logical pieces of
       data. The *delta* is a diff from an existing entry in the changelog.
   
-      The *delta header* is different between versions "1" and "2" of the
+      The *delta header* is different between versions "1", "2", and "3" of the
       changegroup format.
   
       Version 1:
@@ -962,6 +964,15 @@
         |            |             |             |            |            |
         +------------------------------------------------------------------+
   
+      Version 3:
+  
+        +------------------------------------------------------------------------------+
+        |            |             |             |            |            |           |
+        |    node    |   p1 node   |   p2 node   | base node  | link node  | flags     |
+        | (20 bytes) |  (20 bytes) |  (20 bytes) | (20 bytes) | (20 bytes) | (2 bytes) |
+        |            |             |             |            |            |           |
+        +------------------------------------------------------------------------------+
+  
       The *mdiff header* consists of 3 32-bit big-endian signed integers
       describing offsets at which to apply the following delta content:
   
@@ -1006,6 +1017,10 @@
         |          |          |          |     |
         +--------------------------------------+
   
+      In version "3" of the changegroup format, filelogs may include directory
+      logs when treemanifests are in use. directory logs are identified by
+      having a trailing '/' on their filename (see below).
+  
       The final filelog sub-segment is followed by an *empty chunk* to denote
       the end of the segment and the overall changegroup.