Sorry, I've been quite busy and will be for a while.
When you concatenate that way, you hit the 32K limit. You need to pretty print with...
There is no error. The non-strict parsing creates two strings: "TRUE" and "NULL"....
Perhaps you should look at https://sourceforge.net/p/pljson/code/HEAD/tree/svn/examples/ex11.sql...
get_string will return a string which is limited to 32K.
Does the test with the PL/JSON logo work?
I guess you are referring to the extension where you can omit the "'s. I would prefer...