From b1741682a46d25b9b92f4d247138fc776dc4555a Mon Sep 17 00:00:00 2001
From: =?utf8?q?Andr=C3=A9=20Wobst?= <wobsta@users.sourceforge.net>
Date: Sat, 6 Jun 2015 21:14:54 +0000
Subject: [PATCH] fix intersect with empty normsubpaths (bug #62, thanks to
 Florent Hivert)

git-svn-id: http://svn.code.sf.net/p/pyx/code/trunk/pyx@3659 a4f5e268-e194-4f32-bce1-d30804cbbcc5
---
 CHANGES         | 4 ++++
 pyx/normpath.py | 3 +++
 2 files changed, 7 insertions(+)

diff --git a/CHANGES b/CHANGES
index 42398d1b..60b0dc46 100644
--- a/CHANGES
+++ b/CHANGES
@@ -1,3 +1,7 @@
+0.15 (xxxx/xx/xx):
+  - normpath:
+    - fix intersect with empty normsubpaths (bug #62, thanks to Florent Hivert)
+
 0.14 (2015/04/30):
   - new svgwriter module:
     - complete SVG output
diff --git a/pyx/normpath.py b/pyx/normpath.py
index fd741029..5a716e1e 100644
--- a/pyx/normpath.py
+++ b/pyx/normpath.py
@@ -1316,6 +1316,9 @@ class normsubpath:
 
         if len(params) < 2:
             raise ValueError("at least two parameters needed in segments")
+        if not self.normsubpathitems:
+            assert not self.closed # "empty" normsubpath cannot be closed
+            return [self]*(len(params)-1)
 
         result = [normsubpath(epsilon=self.epsilon)]
 
-- 
2.11.4.GIT