VIP23 (VSL refactoring) design sketch

[Nils Goroll]

> - New VSL*() code writes binary data to log records. They take
> printf-like format strings (which can be generated from the SLT sources)
> and varargs, so that the order and types of the args can be checked at
> compile-time. 

The alternative - auto-generated functions taking typed arguments, would yield
in a different interface, so while I am perfectly fine with aiming for
correctness first, the decision for

	- either a printf-style VSL() or
	- custom functions like VSLb_ts()

would ideally be made early on.

I will try to come up with some performance data.

Other than that, I do fully agree with the summary.

Nils

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