From 5020778f60522cddb6aad431fe3316c2336dc266 Mon Sep 17 00:00:00 2001
From: hasufell <hasufell@hasufell.de>
Date: Thu, 9 Oct 2014 17:09:49 +0200
Subject: [PATCH] DIAGRAM: fix crash when passed an empty array to
 showConvexHullLines

---
 Diagram.hs | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Diagram.hs b/Diagram.hs
index 8e02d72..874aa2d 100644
--- a/Diagram.hs
+++ b/Diagram.hs
@@ -112,6 +112,7 @@ showConvexHullPoints = Diag f
 showConvexHullLines :: Diag
 showConvexHullLines = Diag f
   where
+    f _ [] = mempty
     f _ vt
       = (strokeTrail                       .
          fromVertices                      .