the 'exec' option does not support paths with special characters

[jnolles]

Example configuration which fails on Linux:

options: {
    failOnError: true
  },
  updateAllPackages: {
    exec: '/workspace/Some project name (branch 2.10)/updateAllPackages'
  }

It fails because the 'exec' value is not escaped with quotes here (while the Windows variant is):

    if (this.data.exec) {
      // logic is from node's cp.exec method, adapted to benefit from
      // streaming io
      if (process.platform === 'win32') {
        cmd = 'cmd.exe';
        args = ['/s', '/c', '"' + this.data.exec + '"'];
        spawnOpts.windowsVerbatimArguments = true;
      } else {
        cmd = '/bin/sh';
        args = ['-c', this.data.exec];
      }

Please change args = ['-c', this.data.exec]; to args = ['-c', '"' + this.data.exec + '"']; on row 112.