absorb some more errors caused by broken shell pipes

lib/damask/asciitable.py

@@ -547,7 +547,10 @@ class ASCIItable():
       except:
         output = [fmt % row] if fmt else [repr(row)]
       
+      try:
         self.__IO__['out'].write(delimiter.join(output) + '\n')
+      except:
+        pass
 
 # ------------------------------------------------------------------
   def data_append(self,