Fix Trac #1678; be more careful about catching and reporting exceptions in spliced...
authorsimonpj@microsoft.com <unknown>
Wed, 10 Oct 2007 14:57:05 +0000 (14:57 +0000)
committersimonpj@microsoft.com <unknown>
Wed, 10 Oct 2007 14:57:05 +0000 (14:57 +0000)
Many of the new lines are comments to explain the slightly-convoluted
in which exceptions get propagated out of the Q monad.

This fixes Trac 1679; test is TH_runIO (as well as the exising TH_fail).

Please merge


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