Auto-typer from Lost Terminal

typer.rs

use std::fs;
use std::io::{self, BufRead, Write};
use std::{thread, time};

/// stdout readline implementation
fn wait() {
    io::stdin().lock().lines().next();
}

/// Type the script at 300wpm
fn main() -> io::Result<()> {
    let filename = std::env::args().nth(1)
        .unwrap_or("episode.md".to_string());
    let pause = time::Duration::from_millis(40);
    let stdout = io::stdout();
    let mut handle = stdout.lock();
    let contents = fs::read_to_string(filename)?;
    wait();
    for c in contents.chars() {
        if c == '\n' {
            wait();
        } else {
            handle.write_all(&[c as u8])?;
            handle.flush()?;
            thread::sleep(pause);
        }
    }

    Ok(())
}

[profile.release]
opt-level = 'z'      # Optimize for size.
lto = true           # Enable Link Time Optimization
codegen-units = 1    # Reduce number of codegen units to increase optimizations.
panic = "abort"      # Abort on panic
strip = "symbols"    # Strip symbols from binary*

https://github.com/johnthagen/min-sized-rust