dir.c: provide clear_directory() for reclaiming dir_struct memory

diff --git a/Documentation/gitmodules.txt b/Documentation/gitmodules.txt
index 4040941e55e88114b70d3d0ae7ecb644794fc8b3..4effd789026e48085d6b0834cbef990968bedbb2 100644 (file)
--- a/Documentation/gitmodules.txt
+++ b/Documentation/gitmodules.txt
@@ -28,7 +28,7 @@ submodule.<name>.path::
        be unique within the .gitmodules file.
 
 submodule.<name>.url::
-       Defines an url from where the submodule repository can be cloned.
+       Defines a URL from which the submodule repository can be cloned.
        This may be either an absolute URL ready to be passed to
        linkgit:git-clone[1] or (if it begins with ./ or ../) a location
        relative to the superproject's origin repository.
@@ -41,8 +41,11 @@ submodule.<name>.update::
        the commit specified in the superproject. If 'merge', the commit
        specified in the superproject will be merged into the current branch
        in the submodule.
+       If 'none', the submodule with name `$name` will not be updated
+       by default.
+
        This config option is overridden if 'git submodule update' is given
-       the '--merge' or '--rebase' options.
+       the '--merge', '--rebase' or '--checkout' options.
 
 submodule.<name>.fetchRecurseSubmodules::
        This option can be used to control recursive fetching of this
@@ -84,7 +87,7 @@ Consider the following .gitmodules file:
 
 This defines two submodules, `libfoo` and `libbar`. These are expected to
 be checked out in the paths 'include/foo' and 'include/bar', and for both
-submodules an url is specified which can be used for cloning the submodules.
+submodules a URL is specified which can be used for cloning the submodules.
 
 SEE ALSO
 --------