From 39c47f176cc33952f24ed1cb16c09f4c5c14b464 Mon Sep 17 00:00:00 2001
From: Zeno Rogue <zeno@attnam.com>
Date: Sun, 6 Sep 2026 15:52:05 +0200
Subject: [PATCH] rogueviz:: don't render edges if no endpoints

---
 rogueviz/graphs.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/rogueviz/graphs.cpp b/rogueviz/graphs.cpp
index 0a77f17a..c2b4001b 100644
--- a/rogueviz/graphs.cpp
+++ b/rogueviz/graphs.cpp
@@ -584,6 +584,7 @@ void draw_edge(const shiftmatrix &V, cell *c, edgeinfo *ei) {
 
   vertexdata& vd1 = vdata[ei->i];
   vertexdata& vd2 = vdata[ei->j];
+  if(!vd1.m || !vd2.m) return;
 
   int oi = ei->i, oj = ei->j;
   bool hilite = false;