The change looks good; note, however, that you're doing something subtly different if an error occurs: in the original, if an error occured then "fail" was used to forcibly terminate the program. Your variant however returns the shown error message. Depending on the situation, this is usually a bad thing (better off to use Maybe or Either).
Also, here's the official rationale about why SomeException is not recommended: http://www.haskell.org/ghc/docs/6.12.2/html/libraries/base-4.2.0.1/Control-E... . My main summation of this is that it even catches when you try to use Ctrl-c to kill a program.
I tried this - this is consistent with the original in terms of the exiting out ... but the error message does not show up. run s = handle (\e@(SomeException{}) -> exitWith (ExitFailure 1)) $ do How can I achieve both? -- Regards, Kashyap