call ddu#custom#patch_global({
    \   'columns': ['icon_filename'],
    \ })

call ddu#custom#alias('column', 'icon_filename_for_ff', 'icon_filename')
call ddu#custom#patch_global({
  \   sourceOptions: #{
  \     file: #{
  \       columns: ['icon_filename']
  \     },
  \     file_rec: #{
  \       columns: ['icon_filename_for_ff']
  \     },
  \   },
  \   columnParams: #{
  \     icon_filename: #{
  \       defaultIcon: #{ icon = '' },
  \     },
  \     icon_filename_for_ff: #{
  \       defaultIcon: #{ icon = '' },
  \       padding = 0,
  \       pathDisplayOption = 'relative'
  \     }
  \   }
  \ })