Update the documentation for the new '@{...}' syntax

Signed-off-by: Johannes Schindelin <Johannes.Schindelin@gmx.de>

---

 Documentation/git-rev-parse.txt |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)

diff --git a/Documentation/git-rev-parse.txt b/Documentation/git-rev-parse.txt
index aeb37b6..4041a16 100644
--- a/Documentation/git-rev-parse.txt
+++ b/Documentation/git-rev-parse.txt
@@ -160,6 +160,10 @@ blobs contained in a commit.
   immediately following a ref name and the ref must have an existing
   log ($GIT_DIR/logs/<ref>).
 
+* You can use the '@' construct with an empty ref part to get at a
+  reflog of the current branch. For example, if you are on the
+  branch 'blabla', then '@\{1\}' means the same as 'blabla@\{1\}'.
+
 * A suffix '{caret}' to a revision parameter means the first parent of
   that commit object.  '{caret}<n>' means the <n>th parent (i.e.
   'rev{caret}'
-
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