getopt

A minimal, (essentially) POSIX-compliant option parser.

getopt::Parser iterates over the provided arguments, producing options one at a time in the order in which they are given on the command line, and stopping at the first non-option argument.

Example:

```rust

![allow(unusedassignments, unusedvariables)]

use getopt::prelude::*;

fn main() -> Result<(), Box> { let mut args: Vec = std::env::args().collect(); let mut opts = Parser::new(&args, "ab:");

let mut a_flag = false;
let mut b_flag = String::new();
loop {
    match opts.next().transpose()? {
        None => break,
        Some(opt) => match opt {
            Opt('a', None) => a_flag = true,
            Opt('b', Some(string)) => b_flag = string.clone(),
            _ => unreachable!(),
        }
    }
}

let args = args.split_off(opts.index());

// …

Ok(())

} ```

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