}
pub fn get_title(content: &str) -> &str {
    content

use std::fs;
use std::error::Error;

pub fn run(config: Config) -> Result<(), &'static str> {

pub fn run(config: Config) -> Result<(), Box<dyn Error>> {
    // get content that is re-usable by multiple functions
    // XXX: more concrete error message needed?
    let contents = fs::read_to_string(config.fpath)?;

use std::error::Error;

    //      use unwrap_or_else

        tn::run(config)

        match tn::run(config) {
            Ok(_) => Ok(()),
            Err(_) => Err("something went wrong"),
        }