Use expanded method definitions instead of refinements

@jhawthorn said, "this will make Ruby's integer comparisons slower
globally." It looks like "binding.irb" is going to cause serious
problems in Rails applications.

lib/reline/key_stroke.rb

@@ -1,90 +1,90 @@
 class Reline::KeyStroke
   using Module.new {
-    refine Integer do
-      def ==(other)
-        if other.is_a?(Reline::Key)
-          if other.combined_char == "\e".ord
-            false
-          else
-            other.combined_char == self
-          end
+  }
+
+  def initialize(config)
+    @config = config
+  end
+
+  def compress_meta_key(ary)
+    ary.inject([]) { |result, key|
+      if result.size > 0 and result.last == "\e".ord
+        result[result.size - 1] = Reline::Key.new(key, key | 0b10000000, true)
+      else
+        result << key
+      end
+      result
+    }
+  end
+
+  def start_with?(me, other)
+    compressed_me = compress_meta_key(me)
+    compressed_other = compress_meta_key(other)
+    i = 0
+    loop do
+      my_c = compressed_me[i]
+      other_c = compressed_other[i]
+      other_is_last = (i + 1) == compressed_other.size
+      me_is_last = (i + 1) == compressed_me.size
+      if my_c != other_c
+        if other_c == "\e".ord and other_is_last and my_c.is_a?(Reline::Key) and my_c.with_meta
+          return true
         else
-          super
+          return false
         end
+      elsif other_is_last
+        return true
+      elsif me_is_last
+        return false
       end
+      i += 1
     end
+  end
 
-    refine Array do
-      def start_with?(other)
-        compressed_me = compress_meta_key
-        compressed_other = other.compress_meta_key
-        i = 0
-        loop do
-          my_c = compressed_me[i]
-          other_c = compressed_other[i]
-          other_is_last = (i + 1) == compressed_other.size
-          me_is_last = (i + 1) == compressed_me.size
-          if my_c != other_c
-            if other_c == "\e".ord and other_is_last and my_c.is_a?(Reline::Key) and my_c.with_meta
-              return true
-            else
-              return false
-            end
-          elsif other_is_last
-            return true
-          elsif me_is_last
-            return false
-          end
-          i += 1
+  def equal?(me, other)
+    case me
+    when Array
+      compressed_me = compress_meta_key(me)
+      compressed_other = compress_meta_key(other)
+      compressed_me.size == compressed_other.size and [compressed_me, compressed_other].transpose.all?{ |i| equal?(i[0], i[1]) }
+    when Integer
+      if other.is_a?(Reline::Key)
+        if other.combined_char == "\e".ord
+          false
+        else
+          other.combined_char == me
         end
+      else
+        me == other
       end
-
-      def ==(other)
-        compressed_me = compress_meta_key
-        compressed_other = other.compress_meta_key
-        compressed_me.size == compressed_other.size and [compressed_me, compressed_other].transpose.all?{ |i| i[0] == i[1] }
-      end
-
-      def compress_meta_key
-        inject([]) { |result, key|
-          if result.size > 0 and result.last == "\e".ord
-            result[result.size - 1] = Reline::Key.new(key, key | 0b10000000, true)
-          else
-            result << key
-          end
-          result
-        }
-      end
-
-      def bytes
-        self
+    when Reline::Key
+      if other.is_a?(Integer)
+        me.combined_char == other
+      else
+        me == other
       end
     end
-  }
-
-  def initialize(config)
-    @config = config
   end
 
   def match_status(input)
     key_mapping.keys.select { |lhs|
-      lhs.start_with? input
+      start_with?(lhs, input)
     }.tap { |it|
-      return :matched  if it.size == 1 && (it[0] == input)
-      return :matching if it.size == 1 && (it[0] != input)
+      return :matched  if it.size == 1 && equal?(it[0], input)
+      return :matching if it.size == 1 && !equal?(it[0], input)
       return :matched  if it.max_by(&:size)&.size&.< input.size
       return :matching if it.size > 1
     }
     key_mapping.keys.select { |lhs|
-      input.start_with? lhs
+      start_with?(input, lhs)
     }.tap { |it|
       return it.size > 0 ? :matched : :unmatched
     }
   end
 
   def expand(input)
-    input = input.compress_meta_key
-    lhs = key_mapping.keys.select { |item| input.start_with? item }.sort_by(&:size).last
+    input = compress_meta_key(input)
+    lhs = key_mapping.keys.select { |item| start_with?(input, item) }.sort_by(&:size).last
     return input unless lhs
     rhs = key_mapping[lhs]