* hash.c (env_aset): allow nil value to remove an entry.

  [ruby-dev:36465]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@19463 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 2 insertions, 1 deletions

diff --git a/hash.c b/hash.c
index 694b619529..bc627d868f 100644
--- a/hash.c
+++ b/hash.c
@@ -2052,7 +2052,8 @@ env_aset(VALUE obj, VALUE nm, VALUE val)
     }
 
     if (NIL_P(val)) {
-	rb_raise(rb_eTypeError, "cannot assign nil; use Hash#delete instead");
+	env_delete(obj, nm);
+	return Qnil;
     }
     StringValue(nm);
     StringValue(val);