rails scaffold generator bug?

script/generate scaffold RedRose vs script/generate scaffold red_rose

<%= controller_name %>                 #  RedRoses     red_roses    !!
<%= controller_class_path %>           #
<%= controller_file_path %>            #  red_roses    red_roses
<%= controller_class_nesting %>        #
<%= controller_class_nesting_depth %>  #  0            0
<%= controller_class_name %>           #  RedRoses     RedRoses
<%= controller_underscore_name %>      #  red_roses    red_roses
<%= controller_singular_name %>        #  RedRose      red_rose     !!
<%= controller_plural_name %>          #  red_roses    red_roses


script/generate scaffold Red/Rose vs script/generate scaffold red/rose

<%= controller_name %>                 #  Red/Roses    red/roses    !!
<%= controller_class_path %>           #  red          red
<%= controller_file_path %>            #  red/roses    red/roses
<%= controller_class_nesting %>        #  Red          Red
<%= controller_class_nesting_depth %>  #  1            1
<%= controller_class_name %>           #  Red::Roses   Red::Roses
<%= controller_underscore_name %>      #  roses        roses
<%= controller_singular_name %>        #  Rose         rose         !!
<%= controller_plural_name %>          #  roses        roses