avoid division by zero (Bug 604131)

diff --git a/share/extensions/pathalongpath.py b/share/extensions/pathalongpath.py
index f8a8a2c325ce5fed8de4126aad8c155e31242bc3..be2e5bc19e863a5cc132051c0f0349805c0f5446 100644 (file)
--- a/share/extensions/pathalongpath.py
+++ b/share/extensions/pathalongpath.py
@@ -216,9 +216,11 @@ class PathAlongPath(pathmodifier.Diffeo):
         if self.options.vertical:
             #flipxy(bbox)...
             bbox=(-bbox[3],-bbox[2],-bbox[1],-bbox[0])
-            
+
         width=bbox[1]-bbox[0]
         dx=width+self.options.space
+        if dx < 0.01:
+            exit(_("The total length of the pattern is too small :\nPlease choose a larger object or set 'Space between copies' > 0"))
 
         for id, node in self.patterns.iteritems():
             if node.tag == inkex.addNS('path','svg') or node.tag=='path':