const char *

       MongoDB, Inc

       2009-present, MongoDB, Inc.

1.30.4                                            Jun 08, 2025                                BSON_ITER_REGEX(3)

       The  bson_iter_regex()  function  shall  retrieve  the  contents  of  a BSON_TYPE_REGEX element currently
       observed by iter.

       It is invalid to call this function when not observing an element of type BSON_TYPE_REGEX.

       • iter: A bson_iter_t.

       • options: A (null).

       A string containing the regex which should not be modified or  freed.  options  is  set  to  the  options
       provided for the regex.

          const char *
          bson_iter_regex (const bson_iter_t *iter, const char **options);