Redirect and/or gag stdout/stderr.
[](https://travis-ci.org/Stebalien/gag-rs)
Documentation (with examples): https://docs.rs/gag/
# Limitations
* Won't work if something else has called `std::io::set_print` (currently
unstable). Unfortunately, this function doesn't actually redirect the stdio
file descriptor, it just replaces the `std::io::stdout` writer.
* Won't work in rust test cases. The rust test cases use `std::io::set_print` to
redirect stdout. You can get around this though by using the `--nocapture` argument
when running your tests.
# TODO:
* General:
* Better error handling?
* Redirect:
* Be generic over references. That is, accept both a reference to an AsRawFd or
an AsRawFd. Unfortunately, I don't know if this is even possible. Borrow
doesn't work because I really want the following constraint:
`impl<F> Redirect<F> where F: BorrowMut<T>, T: AsMut<AsRawFd>` so I can write
`file.borrow_mut().as_mut()` but that would be ambiguous...
* Buffer:
* Deallocate the buffer as it is read (FALLOC_FL_PUNCH_HOLE) if possible.