* node.c (dump_node): add today's knowledge. "init arguments (m)" and

  "init arguments (p)" of compile.c indicates a Ruby code that
  evaluates multiple assignments that is in method or block
  parameters:  def foo((m1,m2), (m3,m4), *r, (p1,p2), (p3,p4)); end
  The former (init arguments (m)) evaluates the multiple assignments
  before rest argument, that are (m1,m2) and (m3,m4).  The letter
  (init arguments (p)) does ones after rest argument, that are
  (p1,p2) and (p3, p4).

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@32596 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

2 files changed, 14 insertions, 0 deletions

diff --git a/ChangeLog b/ChangeLog
index 4f575368ff..bff05ad787 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,14 @@
+Thu Jul 21 19:27:19 2011  Yusuke Endoh  <mame@tsg.ne.jp>
+
+	* node.c (dump_node): add today's knowledge.  "init arguments (m)" and
+	  "init arguments (p)" of compile.c indicates a Ruby code that
+	  evaluates multiple assignments that is in method or block
+	  parameters:  def foo((m1,m2), (m3,m4), *r, (p1,p2), (p3,p4)); end
+	  The former (init arguments (m)) evaluates the multiple assignments
+	  before rest argument, that are (m1,m2) and (m3,m4).  The letter
+	  (init arguments (p)) does ones after rest argument, that are
+	  (p1,p2) and (p3, p4).
+
 Thu Jul 21 18:11:07 2011  NARUSE, Yui  <naruse@ruby-lang.org>
 
 	* enum.c (enum_inject): remove empty line to notify rdoc
diff --git a/node.c b/node.c
index d1f1b70832..5912bc4752 100644
--- a/node.c
+++ b/node.c
@@ -866,6 +866,9 @@ dump_node(VALUE buf, VALUE indent, int comment, NODE *node)
 		    else {
 			D_NODE_HEADER(node);
 			ANN("method parameters (cont'd)");
+			ANN("\"init arguments (m)\" evaluates multiple assignments before rest argument");
+			ANN("\"init arguments (p)\" evaluates multiple assignments after rest argument");
+			ANN("example: def foo((m1, m2), *r, (p1, p2))");
 			F_NODE(nd_1st, "init arguments (m)");
 			LAST_NODE;
 			F_NODE(nd_2nd, "init arguments (p)");