int file_tag (MUTTMENU *menu, int n)
int file_tag (MUTTMENU *menu, int n, int m)
int file_tag (MUTTMENU *menu, int n){  struct folder_file *ff = &(((struct folder_file *)menu->data)[n]);  if (S_ISDIR (ff->mode) || (S_ISLNK (ff->mode) && link_is_dir (LastDir, ff->name)))  {    mutt_error _("Can't attach a directory!");    return 0;  }    return ((ff->tagged = !ff->tagged) ? 1 : -1);}