Change where exceptions are caught

lib/youplot/backends/unicode_plot_backend.rb

@@ -39,19 +39,7 @@ module YouPlot
           labels = series[x_col]
           values = series[y_col].map(&:to_f)
         end
-        begin
-          UnicodePlot.barplot(labels, values, **params.to_hc)
-        # UnicodePlot error:
-        # All values have to be positive. Negative bars are not supported.
-        rescue ArgumentError => e
-          if YouPlot.run_as_executable?
-            warn e.backtrace[0]
-            warn "\e[35m#{e}\e[0m"
-            exit 1
-          else
-            raise e
-          end
-        end
+        UnicodePlot.barplot(labels, values, **params.to_hc)
       end
 
       def histogram(data, params)

lib/youplot/command.rb

@@ -65,7 +65,17 @@ module YouPlot
 
       pp @data if options[:debug]
 
-      plot = create_plot
+      if YouPlot.run_as_executable?
+        begin
+          plot = create_plot
+        rescue ArgumentError => e
+          warn e.backtrace[0]
+          warn "\e[35m#{e}\e[0m"
+          exit 1
+        end
+      else
+        plot = create_plot
+      end
       output_plot(plot)
     end
 

lib/youplot/command/parser.rb

@@ -164,13 +164,13 @@ module YouPlot
 
       def sub_parser_add_xlim
         sub_parser.on_head('--xlim FLOAT,FLOAT', Array, 'plotting range for the x coordinate') do |v|
-          params.xlim = v.take(2)
+          params.xlim = v
         end
       end
 
       def sub_parser_add_ylim
         sub_parser.on_head('--ylim FLOAT,FLOAT', Array, 'plotting range for the y coordinate') do |v|
-          params.ylim = v.take(2)
+          params.ylim = v
         end
       end