merges r24405 from trunk into ruby_1_9_1.

--
* range.c (range_eql, range_eq): fixed equality to work for
  subclasses of Range.  a patch from Marc-Andre Lafortune.
   [ruby-core:22190]

* test/ruby/test_range.rb: add assertions for above.

git-svn-id: http://svn.ruby-lang.org/repos/ruby/branches/ruby_1_9_1@24469 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 2 insertions, 2 deletions

diff --git a/range.c b/range.c
index c418128af..1e66bba85 100644
--- a/range.c
+++ b/range.c
@@ -125,7 +125,7 @@ range_eq(VALUE range, VALUE obj)
 {
     if (range == obj)
 	return Qtrue;
-    if (!rb_obj_is_instance_of(obj, rb_obj_class(range)))
+    if (!rb_obj_is_kind_of(obj, rb_cRange))
 	return Qfalse;
 
     if (!rb_equal(RANGE_BEG(range), RANGE_BEG(obj)))
@@ -187,7 +187,7 @@ range_eql(VALUE range, VALUE obj)
 {
     if (range == obj)
 	return Qtrue;
-    if (!rb_obj_is_instance_of(obj, rb_obj_class(range)))
+    if (!rb_obj_is_kind_of(obj, rb_cRange))
 	return Qfalse;
 
     if (!rb_eql(RANGE_BEG(range), RANGE_BEG(obj)))