lib/ffi-tk/ffi/tcl/interp.rb in ffi-tk-2009.12.14 vs lib/ffi-tk/ffi/tcl/interp.rb in ffi-tk-2010.01

@@ -28,9 +28,12 @@
             Tcl.new_boolean_obj(0)
           when String
             Tcl.new_string_obj(ruby_obj, ruby_obj.bytesize)
           when Fixnum
             Tcl.new_int_obj(ruby_obj)
+          when Exception
+            string = [ruby_obj.message, *ruby_obj.backtrace].join("\n")
+            Tcl.new_string_obj(string, string.bytesize)
           else
             if ruby_obj.respond_to?(:to_tcl)
               ruby_obj.to_tcl
             else
               raise ArgumentError, "Don't know how to set %p automatically" % [ruby_obj]