yes: support non-UTF-8 args

[jeddenlea]

Also, tighten the creation of the output buffer. Rather than copy "y\n" 8192 times, or any other input some number of times, it can be doubled in place using Vec::extend_from_within.

[sylvestre]

it has some jobs issues :)

[sylvestre]

I am curious why you are writing this PR ? :)

(it looks good, I am just curious about the use case)

[github-actions]

GNU testsuite comparison:

GNU test failed: tests/tail-2/inotify-dir-recreate. tests/tail-2/inotify-dir-recreate is passing on 'main'. Maybe you have to rebase?

[jeddenlea]

D'oh, I need to get better about checking rustfmt before pushing.

Honestly, I have no personal use case for this. A couple months ago when I first got an itch to try to contribute to this project, I thought I'd start with checking some of the more simple utilities, and yes was the first. I simply noticed it was coercing everything into String while GNU's does not, and thought that should be fixed in case someone else does eventually need to pipe text of some other encoding. 🤷