[R] how to trap any warnings from an R function

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From: Boryeu Mao (B.Mao@cerep.com)
Date: Tue 30 Apr 2002 - 05:43:56 EST 

Message-id: <0957E70F25F7D111974B00A0C9833064AF88C5@mayo.cerep.com>

Within an user function, how are the warnings from an R function be trapped
(such that some proper actions can be taken)? 'last.warning' is returned
only at the top level. Pointers are appreciated.

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