rem: return 1; return 0;
add: return true; return false;
context: selected_fstype (const char *fstype){  const struct fs_type_list *fsp;  if (fs_select_list == NULL || fstype == NULL)    return 1;  for (fsp = fs_select_list; fsp; fsp = fsp->fs_next)    if (STREQ (fstype, fsp->fs_name))      return 1;  return 0;}