Derive Macro ReportDebug

#[derive(ReportDebug)]

Generates the [Debug] implementation that delegates to the Report of an error.

Generally, the [Debug] representation of an error should not be used in user-facing scenarios. However, if [Result::unwrap] or [Result::expect] is called, or an error is used as Termination, the standard library will format the error with [Debug]. By delegating to Report, we ensure that the error is still formatted in a user-friendly way and the source chain can be kept in these cases.

Example

#[derive(thiserror::Error, thiserror_ext::ReportDebug)]
#[error("inner")]
struct Inner;

#[derive(thiserror::Error, thiserror_ext::ReportDebug)]
#[error("outer")]
struct Outer {
    #[source]
    inner: Inner,
}

let error = Outer { inner: Inner };
println!("{:?}", error);

New type

Since the new type delegates its [Debug] implementation to the original error type, if the original error type derives ReportDebug, the new type will also behave the same.