nobu	2015-12-09 08:41:27 +0900 (Wed, 09 Dec 2015)

  New Revision: 52982

  http://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=52982

  Log:
    string.c: use rb_id_encoding
    
    * string.c (rb_str_init): rb_id_encoding() returns same ID with
      caching.

  Modified files:
    trunk/string.c
Index: string.c
===================================================================
--- string.c	(revision 52981)
+++ string.c	(revision 52982)
@@ -1340,7 +1340,7 @@ rb_str_init(int argc, VALUE *argv, VALUE https://github.com/ruby/ruby/blob/trunk/string.c#L1340
     int n;
 
     if (!keyword_ids[0])
-	keyword_ids[0] = rb_intern("encoding");
+	keyword_ids[0] = rb_id_encoding();
 
     n = rb_scan_args(argc, argv, "01:", &orig, &opt);
     if (argc > 0 && n == 1)

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