alert_find_emailaddr_func, 0, 0);
  sqlite3_create_function(db, "display_name", 1, SQLITE_UTF8, 0,
                          alert_display_name_func, 0, 0);
  sqlite3_create_function(db, "obscure", 1, SQLITE_UTF8, 0,
                          db_obscure, 0, 0);
  sqlite3_create_function(db, "protected_setting", 1, SQLITE_UTF8, 0,
                          db_protected_setting_func, 0, 0);
  sqlite3_create_function(db, "win_reserved", 1, SQLITE_UTF8, 0,
                          db_win_reserved_func,0,0
  );
}

#if USE_SEE
/*
** This is a pointer to the saved database encryption key string.
*/
static char *zSavedKey = 0;

  }else{
    assert( argc==3 );
    assert( rc==0 || rc==1 );
    if( sqlite3_value_type(argv[2-rc])==SQLITE_NULL ) rc = 1-rc;
    sqlite3_result_value(context, argv[2-rc]);
  }
}

/*
** Implementation of the "win_reserved(X)" SQL function, a wrapper
** for file_is_win_reserved(X) which returns true if X is
** a Windows-reserved filename.
*/
LOCAL void db_win_reserved_func(
  sqlite3_context *context,
  int argc,
  sqlite3_value **argv
){
  const char * zName = (const char *)sqlite3_value_text(argv[0]);
  if( zName!=0 ){
    sqlite3_result_int(context, file_is_win_reserved(zName)!=0);
  }
}

/*
** Convert the input string into a artifact hash.  Make a notation in the
** CONCEALED table so that the hash can be undo using the db_reveal()
** function at some later time.
**
** The value returned is stored in static space and will be overwritten