implement VERSION and UNAME

lib/core/general.rb

@@ -9,6 +9,21 @@ module Rpl
       def nop( stack, dictionary )
         [stack, dictionary]
       end
+
+      # show version
+      def version( stack, dictionary )
+        stack += Rpl::Interpreter.parse( Rpl::Lang.version.to_s )
+
+        [stack, dictionary]
+      end
+
+      # show complete identification string
+      def uname( stack, dictionary )
+        stack += Rpl::Interpreter.parse( "\"Rpl Interpreter version #{Rpl::Lang.version}\"" )
+
+        [stack, dictionary]
+      end
+
     end
   end
 end

repl.rb

@@ -21,8 +21,6 @@ class RplRepl
 
       pp Readline::HISTORY if input == 'history'
 
-      input = '"rpn.rb version 0.0"' if %w[version uname].include?( input )
-
       # Remove blank lines from history
       Readline::HISTORY.pop if input.empty?