bin/image_optim in image_optim-0.5.0 vs bin/image_optim in image_optim-0.5.1

@@ -53,11 +53,15 @@
 end
 
 if ARGV.empty?
   abort "specify image paths to optimize\n\n#{option_parser.help}"
 else
-  io = ImageOptim.new(options)
+  io = begin
+    ImageOptim.new(options)
+  rescue ImageOptim::ConfigurationError, ImageOptim::BinaryNotFoundError => e
+    abort e
+  end
   paths = ARGV.reject do |arg|
     unless File.file?(arg)
       $stderr << "WARN: #{arg} is not a file\n"
     end
   end
@@ -110,7 +114,9 @@
     else
       ["------ #{Space::EMPTY_SPACE}  #{src}", src.size, src.size]
     end
   end
   lines, src_sizes, dst_sizes = results.transpose
-  $stdout.puts lines, "Total: #{size_percent(src_sizes.inject(:+), dst_sizes.inject(:+))}\n"
+  if lines
+    $stdout.puts lines, "Total: #{size_percent(src_sizes.inject(:+), dst_sizes.inject(:+))}\n"
+  end
 end