Improving JSON pretty printing, how to represent floats?

[Herman , Géza]

Hi,

I'm thinking about using the new JSON parser and encoder for 
json-pretty-print.

There is a thing that I don't like about the current 
json-pretty-print: as it parses floats, pretty printing can be 
lossy.  If one pretty prints this

--8<---------------cut here---------------start------------->8---
{
   "a": 3.333333333333000000000000000001
}
--8<---------------cut here---------------end--------------->8---

then the float gets rounded.  I think pretty printing should be 
lossless (keeping the exact format, exp notation, etc.).

What would be the best representation for numbers in this case? 
I'm thinking about using symbols, but I'm not sure this is the 
best approach.  The parser/encoder would have a new keyword 
parameter, like ":numbers-as-symbols t".  If this is specified, 
then numbers wouldn't be parsed, but kept as symbols.  What do you 
think, is this a good approach?

Geza