pass source error to with_context closure? about anyhow HOT 2 CLOSED

I would recommend not putting the cause's message into the outer error's message. Instead you can print the causes in whatever formatting you want, such as separated by ::

print!("{}", error);
error.chain().skip(1).for_each(|e| print!(": {}", e));

If you want the cause to appear in the outer error's message anyway, you would use map_err:

let content = fs::read(&path)
    .map_err(|e| {
        let context = format!("failed to read instrs from {}: {}", path.display(), e);
        Error::new(e).context(context)
    })?;

from anyhow.

Okay, thanks. I'll probably write some macros to do it that way, then.

from anyhow.