code: function dasherizeShorthands(hash) {
      // operate in-place
      Object.keys(hash).forEach(function(key) {
          // each key value is an array
          var val = hash[key][0];
          // only dasherize one-character shorthands
          if (key.length === 1 && val.indexOf('_') > -1) {
              hash[dasherizeFlag(val)] = val;
          }
      });
  
      return hash;
  }
docs: translate weird python underscored keys into dashed argv, avoiding single character aliases.