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On Wed, 21 Jan 2009, Petite Abeille wrote:

On Jan 21, 2009, at 12:17 AM, Leo Razoumov wrote:

How to achieve such assurances short of wrapping everything else in a pcall (xpcall)?

What's wrong with pcall?

For starters, pcall/xpcall do not play nicely with coroutines. You cannot yield across pcall/xpcall function boundaries.
This problem is addressed with coxpcall module in Kepler
but it is not part of official Lua distribution.