patch 8.0.0069
Problem: Compiler warning for self-comparison.
Solution: Define ONE_WINDOW and add #ifdef.
diff --git a/src/quickfix.c b/src/quickfix.c
index c3def1b..a45faea 100644
--- a/src/quickfix.c
+++ b/src/quickfix.c
@@ -2137,7 +2137,7 @@
* If there is only one window and it is the quickfix window, create a
* new one above the quickfix window.
*/
- if (((firstwin == lastwin) && bt_quickfix(curbuf)) || !usable_win)
+ if ((ONE_WINDOW && bt_quickfix(curbuf)) || !usable_win)
{
flags = WSP_ABOVE;
if (ll_ref != NULL)