Make dash offset work in PostScript backend

mdboom · tacaswell · commit 5e7580027e6a · 2015-11-24T00:23:36.000-05:00
diff --git a/lib/matplotlib/backends/backend_ps.py b/lib/matplotlib/backends/backend_ps.py
@@ -276,14 +276,16 @@ def set_linecap(self, linecap, store=1):
     def set_linedash(self, offset, seq, store=1):
         if self.linedash is not None:
             oldo, oldseq = self.linedash
-            if seq_allequal(seq, oldseq): return
+            if seq_allequal(seq, oldseq) and oldo == offset:
+                return
 
         if seq is not None and len(seq):
             s="[%s] %d setdash\n"%(_nums_to_str(*seq), offset)
             self._pswriter.write(s)
         else:
             self._pswriter.write("[] 0 setdash\n")
-        if store: self.linedash = (offset,seq)
+        if store:
+            self.linedash = (offset, seq)
 
     def set_font(self, fontname, fontsize, store=1):
         if rcParams['ps.useafm']: return
