-- |Run a 'Statement'.
runStatement :: OnErr -> Statement -> Shell ShellProcess
runStatement b (Compound c rs) = return $ BuiltinProcess $ withEnv rs [] $
                                                  runCompound b c
runStatement :: OnErr -> Statement -> Shell ShellProcess
runStatement b (Compound c rs) = return $ BuiltinProcess $ withEnv rs [] $
                                                  runCompound b c
runStatement b (Compound c rs) = return $ BuiltinProcess $ withEnv rs [] $
                                                  runCompound b c