lib/image_optim/worker/optipng.rb in image_optim-0.13.3 vs lib/image_optim/worker/optipng.rb in image_optim-0.14.0

@@ -2,13 +2,24 @@
 require 'image_optim/option_helpers'
 require 'image_optim/true_false_nil'
 
 class ImageOptim
   class Worker
+    # http://optipng.sourceforge.net/
     class Optipng < Worker
-      option(:level, 6, 'Optimization level preset: `0` is least, `7` is best'){ |v| OptionHelpers.limit_with_range(v.to_i, 0..7) }
+      LEVEL_OPTION =
+      option(:level, 6, 'Optimization level preset: '\
+          '`0` is least, '\
+          '`7` is best') do |v|
+        OptionHelpers.limit_with_range(v.to_i, 0..7)
+      end
 
-      option(:interlace, false, TrueFalseNil, 'Interlace, `true` - interlace on, `false` - interlace off, `nil` - as is in original image') do |v|
+      INTERLACE_OPTION =
+      option(:interlace, false, TrueFalseNil, 'Interlace, '\
+          '`true` - interlace on, '\
+          '`false` - interlace off, '\
+          '`nil` - as is in original image') do |v|
+        # convert everything truthy to `true`, leave `false` and `nil` as is
         v && true
       end
 
       def optimize(src, dst)
         src.copy(dst)