snprintf (path, pathlen, "%s/%s", NONULL (Maildir), buf);
mutt_concat_path (path, NONULL(Maildir), buf, pathlen);
void mutt_select_fcc (char *path, size_t pathlen, HEADER *hdr){  ADDRESS *adr;  char buf[_POSIX_PATH_MAX];  ENVELOPE *env = hdr->env;  if (mutt_addr_hook (path, pathlen, M_FCCHOOK, NULL, hdr) != 0)  {    if ((option (OPTSAVENAME) || option (OPTFORCENAME)) &&	(env->to || env->cc || env->bcc))    {      adr = env->to ? env->to : (env->cc ? env->cc : env->bcc);      mutt_safe_path (buf, sizeof (buf), adr);      snprintf (path, pathlen, "%s/%s", NONULL (Maildir), buf);      if (!option (OPTFORCENAME) && mx_access (path, W_OK) != 0)	strfcpy (path, NONULL (Outbox), pathlen);    }    else      strfcpy (path, NONULL (Outbox), pathlen);  }  mutt_pretty_mailbox (path);}