たぶんこうじゃないんだろうなーとおもった

a.diff

diff --git a/core/mui/gtk_message_picker.rb b/core/mui/gtk_message_picker.rb
index f3d7f06c..3a747a76 100644
--- a/core/mui/gtk_message_picker.rb
+++ b/core/mui/gtk_message_picker.rb
@@ -40,25 +40,25 @@ class Gtk::MessagePicker < Gtk::Frame
 
   def option_widgets
     @option_widgets ||= Gtk::Grid.new.
-      add(Mtk::boolean(lambda{ |new|
-                             unless new.nil?
-                               @function = function(new)
-                               call end
-                             @function == :or },
-                           'いずれかにマッチする')).
-      add(Mtk::boolean(lambda{ |new|
-                             unless new.nil?
-                               @not = new
-                               call end
-                             @not },
-                           '否定')) end
+      add(boolean(lambda{ |new|
+                        unless new.nil?
+                          @function = function(new)
+                          call end
+                        @function == :or },
+                      'いずれかにマッチする')).
+      add(boolean(lambda{ |new|
+                        unless new.nil?
+                          @not = new
+                          call end
+                        @not },
+                      '否定')) end
 
   def add_button
     @add_button ||= gen_add_button end
 
   def add_condition(expr = DEFAULT_CONDITION)
     pack = Gtk::Grid.new
     close = Gtk::Button.new.add(Gtk::WebIcon.new(Skin[:close], 16, 16)).set_relief(Gtk::RELIEF_NONE)
     close.valign = :start
     close.signal_connect(:clicked){
       @container.remove(pack)
@@ -92,6 +92,15 @@ class Gtk::MessagePicker < Gtk::Frame
 
   private
 
+  def boolean(key, label)
+    proc = key
+    input = Gtk::CheckButton.new(label)
+    input.active = proc.call(*[nil, input][0, proc.arity])
+    input.ssc(:toggled){ |widget|
+      proc.call(*[widget.active?, widget][0, proc.arity]) }
+    return input
+  end
+
   def call
     if @changed_hook
       @changed_hook.call end end