Index: read_net.c
===================================================================
--- read_net.c	(revision 29525)
+++ read_net.c	(revision 29526)
@@ -242,9 +242,34 @@
 
 static int eeschema_support_prio(pcb_plug_import_t *ctx, unsigned int aspects, const char **args, int numargs)
 {
-	if (aspects != IMPORT_ASPECT_NETLIST)
-		return 0; /* only pure netlist import is supported */
-	return 20;
+	unsigned int n, good = 0;
+	FILE *f;
+
+	if ((aspects != IMPORT_ASPECT_NETLIST) && (numargs == 1))
+		return 0; /* only pure netlist import is supported with a single input file */
+
+	f = pcb_fopen(&PCB->hidlib, args[0], "r");
+	if (f == NULL)
+		return 0;
+
+	for(n = 0; n < 32; n++) {
+		char *s, line[1024];
+		s = fgets(line, sizeof(line), f);
+		if (s == NULL)
+			break;
+		while(isspace(*s)) s++;
+		if (strstr(s, "(design") != NULL)
+			good |= 1;
+		else if (strstr(s, "(export") != NULL)
+			good |= 2;
+		if (good == (1|2)) {
+			fclose(f);
+			return 100;
+		}
+	}
+
+	fclose(f);
+	return 0;
 }