From a2ff4f311743bf5dc3ace8f60d0969f92ace6a2d Mon Sep 17 00:00:00 2001
From: Alvin Penner <penner@vaxxine.com>
Date: Mon, 11 Nov 2013 16:30:38 -0500
Subject: extensions. dxf output. do not output arc where start = end (Bug
 1248104)

Fixed bugs:
  - https://launchpad.net/bugs/1248104

(bzr r12791)
---
 share/extensions/cubicsuperpath.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/share/extensions/cubicsuperpath.py b/share/extensions/cubicsuperpath.py
index da46f8080..925efdb04 100755
--- a/share/extensions/cubicsuperpath.py
+++ b/share/extensions/cubicsuperpath.py
@@ -46,8 +46,8 @@ def ArcToPath(p1,params):
     rx,ry,teta,longflag,sweepflag,x2,y2=params[:]
     teta = teta*pi/180.0
     B=[x2,y2]
-    if rx==0 or ry==0:
-        return([[A,A,A],[B,B,B]])
+    if rx==0 or ry==0 or A==B:
+        return([[A[:],A[:],A[:]],[B[:],B[:],B[:]]])
     mat=matprod((rotmat(teta),[[1/rx,0],[0,1/ry]],rotmat(-teta)))
     applymat(mat, A)
     applymat(mat, B)
-- 
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