[kenko]

Why `Either Text Text`? What if you're interested in both stdout and stderr?

[Gabriel439]

Then you can do this:

    fmap (either id id) (both ...)

... which is equivalent to:

    x <- both ...
    return (case x of
        Left  txt -> txt
        Right txt -> txt)

That removes the `Either` tag and fuses them into a single stream.