You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: mod.rs
    path of file: ./repos/broot/src/content_search
    
    the code of the file until where you have to start completion: 
mod content_match;
mod content_search_result;
mod needle;

pub use {
    crate::cont
    
pub fn line_count_at_pos<P: AsRef<Path>>(path: P, pos: usize) -> io::Result<usize> {
    let mut reader = BufReader::new(File::open(path)?);
    let mut line = String::new();
    let mut line_count = 1;
    let mut bytes_count = 0;
    while reader.read_line(&mut line)? > 0 {
        bytes_count += line.len();
        if bytes_count >= pos {
            return Ok(line_count);
        }
        line_count += 1;
        line.clear();
    }
    Err(io::Error::new(io::ErrorKind::UnexpectedEof, "too short".to_string()))
}