old_contents: # This file is part of beets.
  # Copyright 2011, Adrian Sampson.
  #
  # Permission is hereby granted, free of charge, to any person obtaining
  # a copy of this software and associated documentation files (the
  # "Software"), to deal in the Software without restriction, including
  # without limitation the rights to use, copy, modify, merge, publish,
  # distribute, sublicense, and/or sell copies of the Software, and to
  # permit persons to whom the Software is furnished to do so, subject to
  # the following conditions:
  # 
  # The above copyright notice and this permission notice shall be
  # included in all copies or substantial portions of the Software.
  
  """Shows file metadata.
  """
  
  from beets.plugins import BeetsPlugin
  from beets import library
  from beets import ui
  from beets import mediafile
  from beets import util
  
  def info(paths):
      # Set up fields to output.
      fields = []
      for name, _, _, mffield in library.ITEM_FIELDS:
          if mffield:
              fields.append(name)
      maxwidth = max(len(name) for name in fields)
      lineformat = u'{{:>{0}}}: {{}}'.format(maxwidth)
  
      first = True
      for path in paths:
          if not first:
              ui.print_()
  
          path = util.normpath(path)
          ui.print_(path)
          try:
              mf = mediafile.MediaFile(path)
          except mediafile.UnreadableFileError:
              ui.print_('cannot read file')
              continue
          for name in fields:
              ui.print_(lineformat.format(name, getattr(mf, name)))
  
          first = False
  
  class InfoPlugin(BeetsPlugin):
      def commands(self):
          cmd = ui.Subcommand('info', help='show file metadata')
          def func(lib, config, opts, args):
              if not args:
                  raise ui.UserError('no file specified')
              info(args)
          cmd.func = func
          return [cmd]
  
new_contents: # This file is part of beets.
  # Copyright 2011, Adrian Sampson.
  #
  # Permission is hereby granted, free of charge, to any person obtaining
  # a copy of this software and associated documentation files (the
  # "Software"), to deal in the Software without restriction, including
  # without limitation the rights to use, copy, modify, merge, publish,
  # distribute, sublicense, and/or sell copies of the Software, and to
  # permit persons to whom the Software is furnished to do so, subject to
  # the following conditions:
  # 
  # The above copyright notice and this permission notice shall be
  # included in all copies or substantial portions of the Software.
  
  """Shows file metadata.
  """
  
  from beets.plugins import BeetsPlugin
  from beets import library
  from beets import ui
  from beets import mediafile
  from beets import util
  
  def info(paths):
      # Set up fields to output.
      fields = []
      for name, _, _, mffield in library.ITEM_FIELDS:
          if mffield:
              fields.append(name)
  
      # Line format.
      other_fields = ['album art']
      maxwidth = max(len(name) for name in fields + other_fields)
      lineformat = u'{{:>{0}}}: {{}}'.format(maxwidth)
  
      first = True
      for path in paths:
          if not first:
              ui.print_()
  
          path = util.normpath(path)
          ui.print_(path)
          try:
              mf = mediafile.MediaFile(path)
          except mediafile.UnreadableFileError:
              ui.print_('cannot read file')
              continue
  
          # Basic fields.
          for name in fields:
              ui.print_(lineformat.format(name, getattr(mf, name)))
          # Extra stuff.
          ui.print_(lineformat.format('album art', mf.art is not None))
  
  
          first = False
  
  class InfoPlugin(BeetsPlugin):
      def commands(self):
          cmd = ui.Subcommand('info', help='show file metadata')
          def func(lib, config, opts, args):
              if not args:
                  raise ui.UserError('no file specified')
              info(args)
          cmd.func = func
          return [cmd]
  
subject: add "album art" to info plugin