From e4ecf2d16322485e666a3e13291b71dcf7ff3c8e Mon Sep 17 00:00:00 2001
From: Fabian Greffrath <fabian@greffrath.com>
Date: Wed, 7 Dec 2022 21:46:23 +0100
Subject: [PATCH] always define a "next" map for a UMAPINFO entry (#833)

* always define a "next" map for a UMAPINFO entry

* use MAPNAME()

* cosmetic change
---
 src/u_mapinfo.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/src/u_mapinfo.c b/src/u_mapinfo.c
index b1eb378b..65cf8909 100644
--- a/src/u_mapinfo.c
+++ b/src/u_mapinfo.c
@@ -22,6 +22,7 @@
 #include <string.h>
 #include <ctype.h>
 
+#include "doomstat.h"
 #include "info.h"
 #include "i_system.h"
 #include "m_misc2.h"
@@ -667,6 +668,15 @@ static int ParseStandardProperty(u_scanner_t* s, mapentry_t *mape)
     U_GetNextToken(s, true);
   } while (U_CheckToken(s, ','));
 
+  if (!mape->nextmap[0] && !mape->endpic[0])
+  {
+    int ep, map;
+
+    G_ValidateMapName(mape->mapname, &ep, &map);
+
+    strcpy(mape->nextmap, MAPNAME(ep, map + 1));
+  }
+
   free(pname);
   return status;
 }