updated for version 7.4.609 Problem: For complicated list and dict use the garbage collector can run out of stack space. Solution: Use a stack of dicts and lists to be marked, thus making it iterative instead of recursive. (Ben Fritz)

start of test file Xxx
vim: set noai :
	this is a test
	this is a test
	this is a test
	this is a test
this is some more text
end of test file Xxx
this is another test line