* io.c (open_key_args): allow encoding key to take two encoding

  names.  a patch from <rubikitch AT ruby-lang.org>.  [ruby-dev:33540]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@15350 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 1 insertions, 1 deletions

diff --git a/io.c b/io.c
index 32a37df3c9..749229e335 100644
--- a/io.c
+++ b/io.c
@@ -5853,7 +5853,7 @@ open_key_args(int argc, VALUE *argv, struct foreach_arg *arg)
 
 	arg->io = rb_io_open(RSTRING_PTR(argv[0]), "r");
 	GetOpenFile(arg->io, fptr);
-	fptr->enc = rb_to_encoding(v);
+        mode_enc(fptr, StringValueCStr(v));
 	return;
     }
 }