silver 2.0.0

A cross-shell customizable powerline-like prompt with icons
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use crate::Segment;
use std::env;

pub fn segment(segment: &mut Segment, args: &[&str]) {
    if args.is_empty() {
        panic!("you must provide an extra argument to the env module");
    }

    segment.value = env::var(args[0]).unwrap_or_default();
}