When stdin is a terminal, for_byte_record_with_terminator() does not exit immediately on Control-D about bstr HOT 4 CLOSED

use bstr::io::BufReadExt;
use std::io::{self, stdin, BufReader, IsTerminal};

fn main() -> io::Result<()> {
    if stdin().is_terminal() {
        let mut buf_in = BufReader::new(stdin());
        let separator = b'\n';

        println!("Start terminal input for bstr for_byte_record_with_terminator\nTry ^D - it will not exit right away on the first ^D");
        let _result_bstr = buf_in.for_byte_record_with_terminator(separator, |_line| {
            // do something with line
            Ok(true)
        })?;
        println!("Done");
    }
    Ok(())
}

use std::io::{self, stdin, BufRead, BufReader, IsTerminal};

fn main() -> io::Result<()> {
    if stdin().is_terminal() {
        let buf_in = BufReader::new(stdin());
        let separator = b'\n';

        println!("Start terminal input for std io, like split, read_until, etc\nTry ^D");
        let _result_std = buf_in.split(separator).for_each(|_line| {
            // do something with line
        });
        println!("Done");
    }
    Ok(())
}