win_spawn.js

  var spawn;
  if (require('os').platform() == "win32") {
    spawn = function(cmd, args, opts) {
      var exec = require('child_process').exec;
      var cmdargs = args.map(function(arg){ return '"' + arg.toString().replace('"', '""') + '"'}).join(' ');
      var cmd = process.env.COMSPEC;
      var fullcmd = cmd + ' /C "' + cmdargs + '"';
      exec(fullcmd, opts);
    }
  }
  else
    spawn = require('child_process').spawn;