Documentation: improve "add", "pull" and "format-patch" examples

diff --git a/Documentation/git-clone.txt b/Documentation/git-clone.txt
index c90bcece24c0fcbf9513af7808f6d0d13846c528..9b564420c53e33616c605b6564e2f1f227725805 100644 (file)
--- a/Documentation/git-clone.txt
+++ b/Documentation/git-clone.txt
@@ -62,6 +62,18 @@ OPTIONS
        .git/objects/info/alternates to share the objects
        with the source repository.  The resulting repository
        starts out without any object of its own.
++
+*NOTE*: this is a possibly dangerous operation; do *not* use
+it unless you understand what it does. If you clone your
+repository using this option and then delete branches (or use any
+other git command that makes any existing commit unreferenced) in the
+source repository, some objects may become unreferenced (or dangling).
+These objects may be removed by normal git operations (such as git-commit[1])
+which automatically call git-gc[1]. If these objects are removed and
+were referenced by the cloned repository, then the cloned repository
+will become corrupt.
+
+
 
 --reference <repository>::
        If the reference repository is on the local machine
@@ -70,6 +82,8 @@ OPTIONS
        an already existing repository as an alternate will
        require fewer objects to be copied from the repository
        being cloned, reducing network and local storage costs.
++
+*NOTE*: see NOTE to --shared option.
 
 --quiet::
 -q::
@@ -191,4 +205,4 @@ Documentation by Junio C Hamano and the git-list <git@vger.kernel.org>.
 
 GIT
 ---
-Part of the gitlink:git[7] suite
+Part of the linkgit:git[7] suite