Save the wordlist sourceinfo to the current circuit.

Remove sourceinfo only upon 'quit'.

src/frontend/inp.c

@@ -73,6 +73,7 @@ void eval_opt(struct card *deck);
 
 extern bool ft_batchmode;
 extern int dynmaxline;
+extern wordlist* sourceinfo;
 
 /* from inpcom.c */
 extern struct nscope* inp_add_levels(struct card *deck);
@@ -1533,6 +1534,7 @@ inp_dodeck(
         tfree(ct->ci_filename);
 #endif
     ct->ci_filename = copy(filename);
+    ct->ci_sourceinfo = sourceinfo;
 
     /* load the optran data, if provided by .spiceinit or spinit.
        Return immediately, if optran is not selected.*/

src/frontend/misccoms.c

@@ -93,17 +93,21 @@ com_quit(wordlist *wl)
 
     /* Destroy CKT when quit. */
     if (!ft_nutmeg) {
-        while(ft_curckt)
+        while (ft_curckt) {
+            wl_delete(ft_curckt->ci_sourceinfo);
             com_remcirc(NULL);
         }
+    }
     cp_destroy_keywords();
     destroy_ivars();
 #else
     /* remove plotting parameters */
     pl_rempar();
 
-    while (ft_curckt)
+    while (ft_curckt) {
+        wl_delete(ft_curckt->ci_sourceinfo);
         com_remcirc(NULL);
+    }
 #endif
 
     tfree(errMsg);

src/include/ngspice/ftedefs.h

@@ -52,6 +52,7 @@ struct circ {
     struct ccom *ci_nodes;    /* ccom structs for the nodes... */
     struct ccom *ci_devices;  /* and devices in the circuit. */
     char *ci_filename;        /* Where this circuit came from. */
+    wordlist* ci_sourceinfo;  /* paths and names of input files */
     TSKtask *ci_defTask;      /* default task for this circuit */
     TSKtask *ci_specTask;     /* special task for command line jobs */
     TSKtask *ci_curTask;      /* most recent task for this circuit */