This is indeed very strange. On my latest GHC 7 (built a couple of days ago) it does the right thing when compiled, but in GHCi it behaves as you describe. I have no idea, frankly.

On Thu, Feb 3, 2011 at 8:44 PM, Steffen Schuldenzucker <sschuldenzucker@uni-bonn.de> wrote:

Dear cafe,

does anyone have an explanation for this?:

>>> error (error "foo")
*** Exception: foo

>>> error $ error "foo"
*** Exception: *** Exception: foo

-- Steffen

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