Prettier error printing about anyhow

[dtolnay]

Yes, you can customize the formatting:

use anyhow::{Context, Result};

fn main() {
    if let Err(err) = try_main() {
        eprintln!("ERROR: {}", err);
        err.chain().skip(1).for_each(|cause| eprintln!("because: {}", cause));
        std::process::exit(1);
    }
}

fn try_main() -> Result<()> {
    std::fs::read("/nonexist").context("failed to read nonexistent file")?;
    Ok(())
}

[dtolnay]

Added an example of custom formatting to https://docs.rs/anyhow/1.0.20/anyhow/struct.Error.html#display-representations.

[lunacookies]

Ah, thanks for the info.

[zicklag]

This would be a great example to have in the docs or the README.