io.rb,print.rb: puts to expand array arguments.

As CRuby behaves.

mrbgems/mruby-io/mrblib/io.rb

@@ -360,9 +360,14 @@ class IO
     i = 0
     len = args.size
     while i < len
-      s = args[i].to_s
-      write s
-      write "\n" if (s[-1] != "\n")
+      s = args[i]
+      if s.kind_of?(Array)
+        puts(*s)
+      else
+        s = s.to_s
+        write s
+        write "\n" if (s[-1] != "\n")
+      end
       i += 1
     end
     write "\n" if len == 0

mrbgems/mruby-print/mrblib/print.rb

@@ -19,6 +19,37 @@ module Kernel
     args.__svalue
   end
 
+  # 15.3.1.2.10
+  # 15.3.1.3.35
+  def print(*args)
+    i = 0
+    len = args.size
+    while i < len
+      __printstr__ args[i].to_s
+      i += 1
+    end
+  end
+
+  # 15.3.1.2.11
+  # 15.3.1.3.39
+  def puts(*args)
+    i = 0
+    len = args.size
+    while i < len
+      s = args[i]
+      if s.kind_of?(Array)
+        puts(*s)
+      else
+        s = s.to_s
+        __printstr__ s
+        __printstr__ "\n" if (s[-1] != "\n")
+      end
+      i += 1
+    end
+    __printstr__ "\n" if len == 0
+    nil
+  end
+
   def printf(*args)
     __printstr__(sprintf(*args))
     nil

mrbgems/mruby-print/src/print.c

@@ -47,53 +47,12 @@ mrb_printstr(mrb_state *mrb, mrb_value self)
   return s;
 }
 
-/* 15.3.1.2.10  */
-/* 15.3.1.3.35 */
-static mrb_value
-mrb_print(mrb_state *mrb, mrb_value self)
-{
-  mrb_int argc, i;
-  const mrb_value *argv;
-
-  mrb_get_args(mrb, "*", &argv, &argc);
-  for (i=0; i<argc; i++) {
-    mrb_value s = mrb_obj_as_string(mrb, argv[i]);
-    printstr(mrb, RSTRING_PTR(s), RSTRING_LEN(s));
-  }
-  return mrb_nil_value();
-}
-
-/* 15.3.1.2.11  */
-/* 15.3.1.3.39 */
-static mrb_value
-mrb_puts(mrb_state *mrb, mrb_value self)
-{
-  mrb_int argc, i;
-  const mrb_value *argv;
-
-  mrb_get_args(mrb, "*", &argv, &argc);
-  for (i=0; i<argc; i++) {
-    mrb_value s = mrb_obj_as_string(mrb, argv[i]);
-    mrb_int len = RSTRING_LEN(s);
-    printstr(mrb, RSTRING_PTR(s), len);
-    if (len == 0 || RSTRING_PTR(s)[len-1] != '\n') {
-      printstr(mrb, "\n", 1);
-    }
-  }
-  if (argc == 0) {
-    printstr(mrb, "\n", 1);
-  }
-  return mrb_nil_value();
-}
-
 void
 mrb_mruby_print_gem_init(mrb_state* mrb)
 {
   struct RClass *krn;
   krn = mrb->kernel_module;
   mrb_define_method(mrb, krn, "__printstr__", mrb_printstr, MRB_ARGS_REQ(1));
-  mrb_define_method(mrb, krn, "print", mrb_print, MRB_ARGS_ANY());
-  mrb_define_method(mrb, krn, "puts", mrb_puts, MRB_ARGS_ANY());
 }
 
 void