- if (_nc_access(file, R_OK) < 0
- || (fp = fopen(file, "rb")) == 0) {
- returnCode(ERR);
- } else {
- delwin(curscr);
- SP_PARM->_curscr = getwin(fp);
+ if (SP_PARM != 0 &&
+#ifdef USE_TERM_DRIVER
+ InfoOf(SP_PARM).caninit
+#else
+ !(exit_ca_mode && non_rev_rmcup)
+#endif
+ ) {
+ if (_nc_access(file, R_OK) >= 0
+ && (fp = fopen(file, "rb")) != 0) {
+ delwin(CurScreen(SP_PARM));
+ CurScreen(SP_PARM) = getwin(fp);