Minor refactoring

lib/youplot/parser.rb

@@ -30,11 +30,15 @@ module YouPlot
 
       @params = Parameters.new
 
-      if find_config_file
+      apply_config_file
+    end
+
+    def apply_config_file
+      return unless find_config_file
+
       read_config_file
       configure
     end
-    end
 
     def config_file_candidate_paths
       # keep the order of the paths
@@ -338,12 +342,11 @@ module YouPlot
 
       else
         error_message = "uplot: unrecognized command '#{command}'"
-        if YouPlot.run_as_executable?
+        raise Error, error_message unless YouPlot.run_as_executable?
+
         warn error_message
         exit 1
-        else
-          raise Error, error_message
-        end
+
       end
     end