enable usage of parameters in .options lines.

src/frontend/inp.c

@@ -569,7 +569,7 @@ inp_spsource(FILE *fp, bool comfile, char *filename, bool intfile)
 
     if (!comfile) {
         /* Extract the .option lines from the deck into 'options',
-           and remove them from the deck. */
+           and remove them from the deck. Exceptions are .option with params. */
         options = inp_getopts(deck);
         /* Check for .option seed=[val|random] and set the random number generator.
            Check for .option cshunt=val and set a global variable cshunt_value */

src/frontend/options.c

@@ -214,7 +214,6 @@ cp_usrvars(void)
 
 
 /* Extract the .option lines from the deck */
-
 struct card *
 inp_getopts(struct card *deck)
 {
@@ -222,7 +221,9 @@ inp_getopts(struct card *deck)
 
     for (dd = deck->nextcard; dd; dd = next) {
         next = dd->nextcard;
-        if (ciprefix(".opt", dd->line)) {
+        /* .option with params is excluded here. These options will be handled
+        after parameter substitution by INP2dot(), dot_options(), and INPdoOpts(). */
+        if (ciprefix(".opt", dd->line) && !strchr(dd->line, '{')) {
             inp_casefix(dd->line);
             if (last)
                 last->nextcard = dd->nextcard;