[PATCH] Documentation/git-rebase.txt: fix -f description to match actual git behavior.

[Sergey Organov <sorganov@gmail.com>]

Previous description of -f option was wrong as "git rebase" does not
require -f to perform rebase when "current branch is a descendant of
the commit you are rebasing onto", provided commit(s) to be rebased
contain merge(s).

Signed-off-by: Sergey Organov <sorganov@gmail.com>
---
 Documentation/git-rebase.txt | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/Documentation/git-rebase.txt b/Documentation/git-rebase.txt
index 2a93c64..62dac31 100644
--- a/Documentation/git-rebase.txt
+++ b/Documentation/git-rebase.txt
@@ -316,10 +316,9 @@ which makes little sense.
 
 -f::
 --force-rebase::
-	Force the rebase even if the current branch is a descendant
-	of the commit you are rebasing onto.  Normally non-interactive rebase will
-	exit with the message "Current branch is up to date" in such a
-	situation.
+	Force the rebase even if the result will only change commit
+	timestamps. Normally non-interactive rebase will exit with the
+	message "Current branch is up to date" in such a situation.
 	Incompatible with the --interactive option.
 +
 You may find this (or --no-ff with an interactive rebase) helpful after
-- 
1.9.3