id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc	os	architecture	failure	difficulty	testcase	blockedby	blocking	related
2945	add command :mergetrace	phercek		"Currently trace history is stored in ""Resume"" context. I'm not aware of any good reason for this but it results in problems during debugging. The point is that one cannot extend currently active trace history using "":trace <varId>"" while stopped at breakpoint. The nested trace history is extended instead. But the nested history is freed when the "":trace <varId>"" command finishes so there is no access to the trace data. This makes it hard to investigate why the output of the trace command looks the way it was printed: it is not possible to investigate values of variables which contributed to the <varId> value.

A discussion about the reasons for global trace history is here:
 http://www.haskell.org/pipermail/glasgow-haskell-users/2009-January/016436.html"	feature request	new	lowest	7.6.2	GHCi	6.10.1		debugger		Unknown/Multiple	Unknown/Multiple		Unknown