Add bin and edit workflow

bin/gems/facets-3.1.0/lib/standard/facets/binding/block_exec.rb

@@ -0,0 +1,44 @@
+class Binding
+
+  # Allows the evaluation of blocks by a Binding in the same way that strings
+  # can be evaluated.
+  #
+  #   x = 5
+  #   $my_binding = binding
+  #
+  #   class Test  # just here to provide a scope gate
+  #     $my_binding.block_exec { x }
+  #   end
+  #
+  #   # => 5
+  #
+  # NOTE: The implementation of this method uses a method_missing trick.
+  #       Consequently it is a bit of a hack.
+  #
+  def block_exec(*args, &block)
+    BlockEnvironment.new(self, *args, &block).call
+  end
+
+  # This class is used for evaluating blocks in a particular context. 
+  # It is not really meant to be used independently; instead it is used
+  # with Binding#block_exec method.
+
+  class BlockEnvironment < BasicObject
+
+    def initialize(context, *args, &block)
+      @context = context
+      @args = args
+      @block = block
+    end
+
+    def call
+      instance_exec(*@args, &@block)
+    end
+
+    def method_missing(name)
+      eval(name.to_s, @context) rescue super
+    end
+
+  end
+
+end