patch 8.0.0536: quickfix window not updated when freeing quickfix stackv8.0.0536

Problem:    Quickfix window not updated when freeing quickfix stack.
Solution:   Update the quickfix window. (Yegappan Lakshmanan)

1 files changed, 53 insertions, 0 deletions

diff --git a/src/quickfix.c b/src/quickfix.c
index 466c5c2e8..58fcd1101 100644
--- a/src/quickfix.c
+++ b/src/quickfix.c
@@ -4866,9 +4866,50 @@ qf_set_properties(qf_info_T *qi, dict_T *what, int action)
     return retval;
 }
 
+/*
+ * Find the non-location list window with the specified location list.
+ */
+    static win_T *
+find_win_with_ll(qf_info_T *qi)
+{
+    win_T	*wp = NULL;
+
+    FOR_ALL_WINDOWS(wp)
+	if ((wp->w_llist == qi) && !bt_quickfix(wp->w_buffer))
+	    return wp;
+
+    return NULL;
+}
+
+/*
+ * Free the entire quickfix/location list stack.
+ * If the quickfix/location list window is open, then clear it.
+ */
     static void
 qf_free_stack(win_T *wp, qf_info_T *qi)
 {
+    win_T	*qfwin = qf_find_win(qi);
+    win_T	*llwin = NULL;
+    win_T	*orig_wp = wp;
+
+    if (qfwin != NULL)
+    {
+	/* If the quickfix/location list window is open, then clear it */
+	if (qi->qf_curlist < qi->qf_listcount)
+	    qf_free(qi, qi->qf_curlist);
+	qf_update_buffer(qi, NULL);
+    }
+
+    if (wp != NULL && IS_LL_WINDOW(wp))
+    {
+	/* If in the location list window, then use the non-location list
+	 * window with this location list (if present)
+	 */
+	llwin = find_win_with_ll(qi);
+	if (llwin != NULL)
+	    wp = llwin;
+    }
+
     qf_free_all(wp);
     if (wp == NULL)
     {
@@ -4876,6 +4917,18 @@ qf_free_stack(win_T *wp, qf_info_T *qi)
 	qi->qf_curlist = 0;
 	qi->qf_listcount = 0;
     }
+    else if (IS_LL_WINDOW(orig_wp))
+    {
+	/* If the location list window is open, then create a new empty
+	 * location list */
+	qf_info_T *new_ll = ll_new_list();
+	orig_wp->w_llist_ref = new_ll;
+	if (llwin != NULL)
+	{
+	    llwin->w_llist = new_ll;
+	    new_ll->qf_refcount++;
+	}
+    }
 }
 
 /*