fn main() {

use std::io::{self, Write};
let line: &[u8] = b"  key = some value  ";
let body = line.trim_ascii();
let eq = body.iter().position(|&b| b == b'=').unwrap();
let mut out = io::stdout().lock();
out.write_all(b"'").unwrap();
out.write_all(body[..eq].trim_ascii()).unwrap();
out.write_all(b"' -> '").unwrap();
out.write_all(body[eq + 1..].trim_ascii()).unwrap();
out.write_all(b"'\n").unwrap();


}