Document that rev-list --graph triggers parent rewriting.
This may help to understand why --graph causes more comments to
be selected.
Signed-off-by: Yann Dirson <ydirson@altern.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
diff --git a/Documentation/rev-list-options.txt b/Documentation/rev-list-options.txt
index 1aaaf5a..42ca059 100644
--- a/Documentation/rev-list-options.txt
+++ b/Documentation/rev-list-options.txt
@@ -95,6 +95,8 @@
to be printed in between commits, in order for the graph history
to be drawn properly.
+
+This enables parent rewriting, see 'History Simplification' below.
++
This implies the '--topo-order' option by default, but the
'--date-order' option may also be specified.
