nobu	2017-08-29 20:35:35 +0900 (Tue, 29 Aug 2017)

  New Revision: 59685

  https://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=59685

  Log:
    array.c: nested encoding
    
    * array.c (ary_join_1): ignore encodings in nested arrays as an
      initial encoding.

  Modified files:
    trunk/array.c
Index: array.c
===================================================================
--- array.c	(revision 59684)
+++ array.c	(revision 59685)
@@ -2008,6 +2008,7 @@ ary_join_1(VALUE obj, VALUE ary, VALUE s https://github.com/ruby/ruby/blob/trunk/array.c#L2008
 	    else {
 		VALUE args[4];
 
+		*first = FALSE;
 		args[0] = val;
 		args[1] = sep;
 		args[2] = result;

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