Documentation: clarify diff --cc

The definition of an "uninteresting" hunk was not in line with reality.

Signed-off-by: Junio C Hamano <gitster@pobox.com>

1 files changed, 5 insertions, 5 deletions

diff --git a/Documentation/git-diff-tree.txt b/Documentation/git-diff-tree.txt
index 56caeb2d26..f4fbec48d8 100644
--- a/Documentation/git-diff-tree.txt
+++ b/Documentation/git-diff-tree.txt
@@ -93,11 +93,11 @@ include::pretty-options.txt[]
 	This flag changes the way a merge commit patch is displayed,
 	in a similar way to the '-c' option. It implies the '-c'
 	and '-p' options and further compresses the patch output
-	by omitting hunks that show differences from only one
-	parent, or show the same change from all but one parent
-	for an Octopus merge.  When this optimization makes all
-	hunks disappear, the commit itself and the commit log
-	message is not shown, just like in any other "empty diff" case.
+	by omitting uninteresting hunks whose the contents in the parents
+	have only two variants and the merge result picks one of them
+	without modification.  When all hunks are uninteresting, the commit
+	itself and the commit log message is not shown, just like in any other
+	"empty diff" case.
 
 --always::
 	Show the commit itself and the commit log message even