inp.c, inpcom.c, treat files starting with '*ng_script' as command files

src/frontend/inp.c

@@ -334,6 +334,10 @@ inp_spsource(FILE *fp, bool comfile, char *filename, bool intfile)
         return;
     }
 
+    /* files starting with *ng_script are user supplied command files */
+    if (ciprefix("*ng_script", deck->li_line))
+        comfile = TRUE;
+
     if (!comfile) {
         /* Extract the .option lines from the deck into 'options',
            and remove them from the deck. */

src/frontend/inpcom.c

@@ -487,6 +487,10 @@ inp_readall(FILE *fp, char *dir_name, bool comfile, bool intfile)
     rv = inp_read(fp, 0, dir_name, comfile, intfile);
     cc = rv . cc;
 
+    /* files starting with *ng_script are user supplied command files */
+    if (cc && ciprefix("*ng_script", cc->li_line))
+        comfile = TRUE;
+
     /* The following processing of an input file is not required for command files
        like spinit or .spiceinit, so return command files here. */
 
@@ -895,6 +899,10 @@ inp_read(FILE *fp, int call_depth, char *dir_name, bool comfile, bool intfile)
         return rv;
     }
 
+    /* files starting with *ng_script are user supplied command files */
+    if (call_depth == 0 && ciprefix("*ng_script", cc->li_line))
+        comfile = TRUE;
+
     if (call_depth == 0 && !comfile) {
         cc->li_next = xx_new_line(cc->li_next, copy(".global gnd"), 1, 0);