display_tasks_and_comments (Rake::Application)

          # File lib/rake.rb, line 1698
    1698:     def display_tasks_and_comments
    1699:       displayable_tasks = Rake::Task.tasks.select { |t|
    1700:         t.comment && t.name =~ options.show_task_pattern
    1701:       }
    1702:       width = displayable_tasks.collect { |t|
    1703:         t.name.length
    1704:       }.max
    1705:       displayable_tasks.each do |t|
    1706:         printf "rake %-#{width}s  # %s\n", t.name, t.comment
    1707:       end
    1708:     end