(my) r(ust)-ed

I learned the basics of ed(1), and writing my own seems like an entertaining way to write some more Rust.

references

• GNU ed has more options than I care to deal with. OpenBSD's man page was the first non-GNU Google result I got for man ed. Thus https://man.openbsd.org/ed.1

does it do anything yet?

it parses command line arguments and then politely exits.