Merge pull request #4453 from shuujii/move-Kernel-instance_eval-to-BasicObject

Move `Kernel#instance_eval` to `BasicObject`

mrbgems/mruby-eval/src/eval.c

@@ -387,7 +387,7 @@ void
 mrb_mruby_eval_gem_init(mrb_state* mrb)
 {
   mrb_define_module_function(mrb, mrb->kernel_module, "eval", f_eval, MRB_ARGS_ARG(1, 3));
-  mrb_define_method(mrb, mrb->kernel_module, "instance_eval", f_instance_eval, MRB_ARGS_ARG(1, 2));
+  mrb_define_method(mrb, mrb_class_get(mrb, "BasicObject"), "instance_eval", f_instance_eval, MRB_ARGS_ARG(1, 2));
 }
 
 void

mrbgems/mruby-eval/test/eval.rb

@@ -80,7 +80,7 @@ assert('Kernel.#eval(string) context') do
   assert_equal('class') { obj.const_string }
 end
 
-assert('Object#instance_eval with begin-rescue-ensure execution order') do
+assert('BasicObject#instance_eval with begin-rescue-ensure execution order') do
   class HellRaiser
     def raise_hell
       order = [:enter_raise_hell]
@@ -100,7 +100,7 @@ assert('Object#instance_eval with begin-rescue-ensure execution order') do
   assert_equal([:enter_raise_hell, :begin, :rescue, :ensure], hell_raiser.raise_hell)
 end
 
-assert('Kernel#instance_eval() to define singleton methods Issue #3141') do
+assert('BasicObject#instance_eval to define singleton methods Issue #3141') do
   foo_class = Class.new do
     def bar(x)
       instance_eval "def baz; #{x}; end"