diff --git a/plugins/ruby/codegen.pl b/plugins/ruby/codegen.pl
index 408121cf5..effcb9327 100755
--- a/plugins/ruby/codegen.pl
+++ b/plugins/ruby/codegen.pl
@@ -51,7 +51,8 @@ sub render_global_enum {
     my ($name, $type) = @_;
 
     my $rbname = rb_ucase($name);
-    push @lines_rb, "class $rbname";
+    # store constants in DFHack::EnumName and not in DFHack::MemHack::EnumName
+    push @lines_rb, "class ::DFHack::$rbname";
     %seen_enum_name = ();
     indent_rb {
         render_enum_fields($type);
diff --git a/plugins/ruby/ruby-memstruct.rb b/plugins/ruby/ruby-memstruct.rb
index 5a759add8..e87731bf8 100644
--- a/plugins/ruby/ruby-memstruct.rb
+++ b/plugins/ruby/ruby-memstruct.rb
@@ -152,28 +152,29 @@ class Pointer < MemStruct
 		@_tg = tg
 	end
 
-	def _getp
-		DFHack.memory_read_int32(@_memaddr) & 0xffffffff
+	def _getp(i=0)
+		delta = (i != 0 ? i*@_tglen : 0)
+		(DFHack.memory_read_int32(@_memaddr) & 0xffffffff) + delta
 	end
 	def _setp(v)
 		DFHack.memory_write_int32(@_memaddr, v)
 	end
+	def _get ; self ; end
 
-	# _getp/_setp defined in ruby.cpp, access the pointer value
-	def _get
-		addr = _getp
-		return if addr == 0	# XXX are there pointers with -1 as 'empty' value ?
+	def [](i)
+		addr = _getp(i)
+		return if addr == 0
 		@_tg._at(addr)._get
 	end
-	def _set(v)
-		addr = _getp
-		raise 'null pointer' if addr == 0	# TODO malloc ?
+	def []=(i, v)
+		addr = _getp(i)
+		raise 'null pointer' if addr == 0
 		@_tg._at(addr)._set(v)
 	end
 
 	# the pointer is invisible, forward all methods to the pointed object
 	def method_missing(*a)
-		_get.send(*a)
+		self[0].send(*a)
 	end
 end
 class StaticArray < MemStruct
@@ -193,11 +194,11 @@ class StaticArray < MemStruct
 	end
 	def [](i)
 		i += @_length if i < 0
-		tgat(i)._get
+		_tgat(i)._get
 	end
 	def []=(i, v)
 		i += @_length if i < 0
-		tgat(i)._set(v)
+		_tgat(i)._set(v)
 	end
 
 	include Enumerable
diff --git a/plugins/ruby/ruby.rb b/plugins/ruby/ruby.rb
index 3decef958..13567c9ec 100644
--- a/plugins/ruby/ruby.rb
+++ b/plugins/ruby/ruby.rb
@@ -19,12 +19,14 @@ module DFHack
             a.flatten.each { |l|
                 print_str(l.to_s.chomp + "\n")
             }
+            nil
         end
 
         def puts_err(*a)
             a.flatten.each { |l|
                 print_err(l.to_s.chomp + "\n")
             }
+            nil
         end
 
         def test
@@ -34,6 +36,11 @@ module DFHack
                 puts "cursor pos: #{cursor.x} #{cursor.y} #{cursor.z}"
 
                 puts "unit[0] id: #{world.units.all[0].id}"
+
+                if cursor.x >= 0
+                    world.map.block_index[cursor.x/16][cursor.y/16][cursor.z].designation[cursor.x%16][cursor.y%16].dig = TileDigDesignation::Default
+                    puts "dug cursor tile"
+                end
             }
 
             puts "done"