From d56f6d817093221cb69de7328c69e6f52f8956ec Mon Sep 17 00:00:00 2001
From: Ethanfel <ethan.fel@ts-pc.fr>
Date: Sat, 28 Feb 2026 00:21:43 +0100
Subject: [PATCH] Fix graphviz crash: use polyline splines instead of ortho

splines=ortho triggers a trapezoid-table overflow assertion in
graphviz's dot layout engine on complex graphs. polyline gives
similar angled edges without the crash.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
---
 history_tree.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/history_tree.py b/history_tree.py
index 51adfb5..362c1a1 100644
--- a/history_tree.py
+++ b/history_tree.py
@@ -104,7 +104,7 @@ class HistoryTree:
             'digraph History {',
             f'  rankdir={direction};',
             '  bgcolor="white";',
-            '  splines=ortho;',
+            '  splines=polyline;',
             f'  nodesep={nodesep};',
             f'  ranksep={ranksep};',
             '  node [shape=plain, fontname="Arial"];',