* string.c (tr_trans): should associate new encoding if modified.

git-svn-id: http://svn.ruby-lang.org/repos/ruby/trunk@14555 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 5 insertions, 2 deletions

diff --git a/string.c b/string.c
index 271960d73..60eadbd1d 100644
--- a/string.c
+++ b/string.c
@@ -3654,8 +3654,11 @@ tr_trans(VALUE str, VALUE src, VALUE repl, int sflag)
 	STR_SET_NOEMBED(str);
 	RSTRING(str)->as.heap.aux.capa = max;
     }
-
-    if (modify) return str;
+    
+    if (modify) {
+	rb_enc_associate(str, enc);
+	return str;
+    }
     return Qnil;
 }