I notice that when I try to execute a non-existing command with runInteractiveProcess, nasty things happen when I close the input. To be exact, the whole program terminates. Is this the intended behavior, and if so, what is the correct way to work around it? Sample sessions below, "cat" is a valid executable, while "asdf" is not. -k % ghci ___ ___ _ / _ \ /\ /\/ __(_) / /_\// /_/ / / | | GHC Interactive, version 6.6, for Haskell 98. / /_\\/ __ / /___| | http://www.haskell.org/ghc/ \____/\/ /_/\____/|_| Type :? for help. Loading package base ... linking ... done. Prelude> :m + System.IO Prelude System.IO> :m + System.Process Prelude System.IO System.Process> (i,o,e,p) <- runInteractiveCommand "asdf" Prelude System.IO System.Process> hPutStr i "foo" Prelude System.IO System.Process> hClose i % ghci ___ ___ _ / _ \ /\ /\/ __(_) / /_\// /_/ / / | | GHC Interactive, version 6.6, for Haskell 98. / /_\\/ __ / /___| | http://www.haskell.org/ghc/ \____/\/ /_/\____/|_| Type :? for help. Loading package base ... linking ... done. Prelude> :m + System.Process Prelude System.Process> :m + System.IO Prelude System.Process System.IO> (i,o,e,p) <- runInteractiveCommand "cat" Prelude System.Process System.IO> hPutStr i "foo" Prelude System.Process System.IO> hClose i Prelude System.Process System.IO> Prelude System.Process System.IO> x<- waitForProcess p ExitSuccess