docs: function packPathData(glyph) {
      /*jshint validthis: true */
      'use strict';
      var metadata = this,
          data = glyph.$.d || '',
          commands = pathParser(data),
          cursor = { emScale: metadata.emScale, x: 0, y: 0, x0: 0, y0: 0 },
          packedCommands,
          packedPath;
  
      //console.log('"%s"  d="%s"', glyph.$.unicode, data);
      packedCommands = commands.map(packPathCommand, cursor);
      packedPath = Buffer.concat(packedCommands);
  
      return packedPath;
  }