[DOC PATCH] State the effect of filter-branch on graft explicitly

["Daniel Cheng (aka SDiZ)" <j16sdiz+freenet@gmail.com>]

Signed-off-by: Daniel Cheng (aka SDiZ) <j16sdiz+freenet@gmail.com>
---

The documentation state nothing about effect of graft in filter-branch.
The only (implicit) reference is the "simplier" method in the example
section.

This patch make the reference explicit.


 Documentation/git-filter-branch.txt |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)

diff --git a/Documentation/git-filter-branch.txt b/Documentation/git-filter-branch.txt
index 237f85e..e281290 100644
--- a/Documentation/git-filter-branch.txt
+++ b/Documentation/git-filter-branch.txt
@@ -31,6 +31,9 @@ changes, which would normally have no effect.  Nevertheless, this may be
 useful in the future for compensating for some git bugs or such,
 therefore such a usage is permitted.
 
+*NOTE*: This command honor `.git/info/grafts`. If you have any grafts
+defined, running this command will make them permanent.
+
 *WARNING*! The rewritten history will have different object names for all
 the objects and will not converge with the original branch.  You will not
 be able to easily push and distribute the rewritten branch on top of the
-- 
1.6.2.1