anchor.diff:          $base0D = @base["0D"]["hex"]
           $base0E = @base["0E"]["hex"]
           $base0F = @base["0F"]["hex"]
  +        $font_icon = "FontAwesome"
   
           # https://developer.gnome.org/pango/stable/PangoMarkupFormat.html
           def set_fmt(icon: '',
                       icon_color: $base00,
                       separator: ''
                      )
  -            "<span font='14' color='##{icon_color.upcase}'>#{icon}</span>"\
  -            "  <b>%s  #{separator}</b> "\
  -            "<span font_weight='light'>%b</span>"
  +            "<span font='#{$font_icon} 14' color='##{icon_color.upcase}'>#{icon}</span>"\
  +            "  <b>%s</b>  <span font='#{$font_icon} 14'>#{separator}</span>"\
  +            "<span font_weight='light'>    %b</span>"
           end
       %>
       format = "<%= set_fmt() %>"
  
positive.code: # Spotify
  [fmt-spotify]
      appname = "Spotify"
      format = "<%= set_fmt(icon: '', separator: '') %>"
      background = "#<%= $base0B %>"
      foreground = "#<%= $base00 %>"
  
  
negative.code:     separator_height = 0
  
      # Padding between text and separator.
      padding = 6
  
      # Horizontal padding.
      horizontal_padding = 8
  