From 9b82b72c6ef41d74005006c9d0c78b583f8e562c Mon Sep 17 00:00:00 2001
From: Pasi Kallinen <paxed@alt.org>
Date: Sat, 7 Oct 2017 16:30:17 +0300
Subject: [PATCH] Unmap invisible glyphs when cleaving and no monster present

---
 src/uhitm.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/uhitm.c b/src/uhitm.c
index b4d272187..97e49dbca 100644
--- a/src/uhitm.c
+++ b/src/uhitm.c
@@ -529,8 +529,10 @@ struct attack *uattk;
         mtmp = NULL;
         if (isok(x + xdir[i], y + ydir[i]))
             mtmp = m_at(x + xdir[i], y + ydir[i]);
-        if (!mtmp)
+        if (!mtmp) {
+            (void) unmap_invisible(x + xdir[i], y + ydir[i]);
             continue;
+        }
 
 
         tmp = find_roll_to_hit(mtmp, uattk->aatyp, uwep,