Fails with output redirection

If any output redirection is used, errors are thrown and no following happens.

E.g.,

``` sh
$ echo "blah" > dir/file
$ follow
-bash: syntax error near unexpected token `>'
-bash: arg_array: bad array subscript
follow: cannot follow to ""

$ echo "blah" 2>/dev/null
blah
$ follow
-bash: syntax error near unexpected token `2'
-bash: arg_array: bad array subscript
follow: cannot follow to ""
```
