mercurial/help/internals/changegroups.txt

31286:f8df87018ae9

The *delta data* consists of ``chunklen - 4 - headerlen`` bytes, which contain a
series of *delta*s, densely packed (no separators). These deltas describe a diff
from an existing entry (either that the recipient already has, or previously
specified in the bundle/changegroup). The format is described more fully in
``hg help internals.bdiff``, but briefly:

   +---------------------------------------------------------------+
   |              |            |            |                      |
   | start offset | end offset | new length |        content       |
   |  (4 bytes)   |  (4 bytes) |  (4 bytes) | (<new length> bytes) |

31287:16539e32ebe0

The *delta data* consists of ``chunklen - 4 - headerlen`` bytes, which contain a
series of *delta*s, densely packed (no separators). These deltas describe a diff
from an existing entry (either that the recipient already has, or previously
specified in the bundle/changegroup). The format is described more fully in
``hg help internals.bdiff``, but briefly::

   +---------------------------------------------------------------+
   |              |            |            |                      |
   | start offset | end offset | new length |        content       |
   |  (4 bytes)   |  (4 bytes) |  (4 bytes) | (<new length> bytes) |