soft_masks.rb in prawn-2.3.0

- old
+ new

@@ -1,4 +1,6 @@
+# frozen_string_literal: true
+
 # Soft masks are used for more complex alpha channel manipulations. You can use
 # arbitrary drawing functions for creation of soft masks. The resulting alpha
 # channel is made of greyscale version of the drawing (luminosity channel to be
 # precise). So while you can use any combination of colors for soft masks it's
 # easier to use greyscales. Black will result in full transparency and white