git-submodule summary: documentation

Signed-off-by: Ping Yin <pkufranky@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/Documentation/git-submodule.txt b/Documentation/git-submodule.txt
index e818e6e7895a94af0b05f04d2c8ecdae64583efd..e96bf365213c3321e9721dc2baa87ad278dfcb26 100644 (file)
--- a/Documentation/git-submodule.txt
+++ b/Documentation/git-submodule.txt
@@ -12,6 +12,7 @@ SYNOPSIS
 'git-submodule' [--quiet] add [-b branch] [--] <repository> [<path>]
 'git-submodule' [--quiet] status [--cached] [--] [<path>...]
 'git-submodule' [--quiet] [init|update] [--] [<path>...]
+'git-submodule' [--quiet] summary [--summary-limit <n>] [commit] [--] [<path>...]
 
 
 COMMANDS
@@ -46,6 +47,11 @@ update::
        checkout the commit specified in the index of the containing repository.
        This will make the submodules HEAD be detached.
 
+summary::
+       Show commit summary between the given commit (defaults to HEAD) and
+       working tree/index. For a submodule in question, a series of commits
+       in the submodule between the given super project commit and the
+       index or working tree (switched by --cached) are shown.
 
 OPTIONS
 -------
@@ -56,9 +62,16 @@ OPTIONS
        Branch of repository to add as submodule.
 
 --cached::
-       Display the SHA-1 stored in the index, not the SHA-1 of the currently
-       checked out submodule commit. This option is only valid for the
-       status command.
+       This option is only valid for status and summary commands.  These
+       commands typically use the commit found in the submodule HEAD, but
+       with this option, the commit stored in the index is used instead.
+
+-n, --summary-limit::
+       This option is only valid for the summary command.
+       Limit the summary size (number of commits shown in total).
+       Giving 0 will disable the summary; a negative number means unlimted
+       (the default). This limit only applies to modified submodules. The
+       size is always limited to 1 for added/deleted/typechanged submodules.
 
 <path>::
        Path to submodule(s). When specified this will restrict the command