stringToNode() for plan nodes...

Hi!

I have a problem with stringToNode() function. I'm trying to convert a
Plan into its ASCII representation. This seems to succeed. The problem
is that when I try to convert it back with stringToNode() the following
error is reported:

" ERROR:  badly formatted node string "SEQSCAN :startup_cost 0.00
:tota"... "

In  other words stringToNode(nodeToString(plan)) fails.

I've read somewhere that there is no support in stringToNode() for Plan
nodes.Is this true? I want it to work in order to store (in ASCII
format) and then read a Plan from disc. Any suggestions...?

Thanks in advance!
Katsaros Kwn/nos