Index: gtk_conf_list.c
===================================================================
--- gtk_conf_list.c	(revision 1994)
+++ gtk_conf_list.c	(revision 1995)
@@ -40,10 +40,38 @@
 	rebuild(cl);
 }
 
+static void fill_misc_cols(gtk_conf_list_t *cl, int row_idx, GtkTreeIter *iter)
+{
+	int col;
+	if (cl->get_misc_col_data != NULL) {
+		for(col = 0; col < cl->num_cols; col++) {
+			if ((col == cl->col_data) || (col == cl->col_src))
+				continue;
+			char *s = cl->get_misc_col_data(row_idx, col, NULL);
+			if (s != NULL) {
+				gtk_list_store_set(cl->l, iter, col, s, -1);
+				free(s);
+			}
+		}
+	}
+}
+
 static void button_ins_cb(GtkButton * button, gtk_conf_list_t *cl)
 {
-	GtkTreeIter iter;
-	printf("ins %d!\n", get_sel(cl, &iter));
+	GtkTreeIter *sibl, sibl_, iter;
+	int idx = get_sel(cl, &sibl_);
+	if (idx < 0) {
+		idx = gtk_tree_model_iter_n_children(gtk_tree_view_get_model(GTK_TREE_VIEW(cl->t)), NULL);
+		sibl = NULL;
+	}
+	else
+		sibl = &sibl_;
+
+	gtk_list_store_insert_before(cl->l, &iter, sibl);
+	fill_misc_cols(cl, idx, &iter);
+
+#warning TODO: insert new item at idx
+	printf("ins %d!\n", idx);
 }
 
 static void button_del_cb(GtkButton * button, gtk_conf_list_t *cl)
@@ -103,7 +131,6 @@
 #warning TODO: replace list item idx
 }
 
-
 GtkWidget *gtk_conf_list_widget(gtk_conf_list_t *cl)
 {
 	GtkWidget *vbox, *hbox, *bins, *bdel, *bsel, *vfill;
@@ -123,7 +150,6 @@
 
 	/* fill in the list with initial data */
 	for(n = 0; n < 8; n++) {
-		int col;
 		char s[16];
 		sprintf(s, "foo %d", n);
 		gtk_list_store_append(cl->l, &iter);
@@ -130,17 +156,7 @@
 
 		gtk_list_store_set(cl->l, &iter, cl->col_data, s, -1);
 		gtk_list_store_set(cl->l, &iter, cl->col_src, "src", -1);
-		if (cl->get_misc_col_data != NULL) {
-			for(col = 0; col < cl->num_cols; col++) {
-				if ((col == cl->col_data) || (col == cl->col_src))
-					continue;
-				char *s = cl->get_misc_col_data(n, col, NULL);
-				if (s != NULL) {
-					gtk_list_store_set(cl->l, &iter, col, s, -1);
-					free(s);
-				}
-			}
-		}
+		fill_misc_cols(cl, n, &iter);
 	}
 
 	/* add all columns */