search_for

      pattern: <string>
      case sensitive flag: <yes/no>
      regular expression flag: <yes/no>
      enter folds setting: <never/if_open/always>
      enter virtual folds setting: <never/if_open/always>
      forwards flag: <yes/no>
      no of matches: <number>
      confirm flag: <yes/no>

 This command searches for a given pattern or regular expression.

 It can be made to search nested folds and/or nested virtual folds,
 possibly discriminating on their open state.

 It can be made to find the Nth match too.

 The scope of the search is set to the current fold.

 eg:  search_for ".*\.c" yes yes if_open if_open yes 5 no