Should clarify the role of `mruby-kernel-ext` and `mruby-object-ext`; close #4449

The former should contain function like methods, and the latter should
contain methods shared by all objects.

2 files changed, 0 insertions, 32 deletions

diff --git a/mrbgems/mruby-kernel-ext/mrblib/kernel.rb b/mrbgems/mruby-kernel-ext/mrblib/kernel.rb
deleted file mode 100644
index bf739ed1a..000000000
--- a/mrbgems/mruby-kernel-ext/mrblib/kernel.rb
+++ /dev/null
@@ -1,15 +0,0 @@
-module Kernel
-  # call-seq:
-  #   obj.yield_self {|_obj|...} -> an_object
-  #   obj.then {|_obj|...}       -> an_object
-  #
-  # Yields <i>obj</i> and returns the result.
-  #
-  #   'my string'.yield_self {|s|s.upcase} #=> "MY STRING"
-  #
-  def yield_self(&block)
-    return to_enum :yield_self unless block
-    block.call(self)
-  end
-  alias then yield_self
-end
diff --git a/mrbgems/mruby-kernel-ext/src/kernel.c b/mrbgems/mruby-kernel-ext/src/kernel.c
index 99affbfa4..9288b0e6f 100644
--- a/mrbgems/mruby-kernel-ext/src/kernel.c
+++ b/mrbgems/mruby-kernel-ext/src/kernel.c
@@ -206,22 +206,6 @@ mrb_f_hash(mrb_state *mrb, mrb_value self)
   return mrb_ensure_hash_type(mrb, arg);
 }
 
-/*
- *  call-seq:
- *     obj.itself -> an_object
- *
- *  Returns <i>obj</i>.
- *
- *      string = 'my string' #=> "my string"
- *      string.itself.object_id == string.object_id #=> true
- *
- */
-static mrb_value
-mrb_f_itself(mrb_state *mrb, mrb_value self)
-{
-  return self;
-}
-
 void
 mrb_mruby_kernel_ext_gem_init(mrb_state *mrb)
 {
@@ -237,7 +221,6 @@ mrb_mruby_kernel_ext_gem_init(mrb_state *mrb)
   mrb_define_module_function(mrb, krn, "String", mrb_f_string, MRB_ARGS_REQ(1));
   mrb_define_module_function(mrb, krn, "Array", mrb_f_array, MRB_ARGS_REQ(1));
   mrb_define_module_function(mrb, krn, "Hash", mrb_f_hash, MRB_ARGS_REQ(1));
-  mrb_define_module_function(mrb, krn, "itself", mrb_f_itself, MRB_ARGS_NONE());
 }
 
 void