One would no even need to make a diff in theory, simply the new version. In many cases, it is sufficient to simply send an email with: > There's a bug in the

One would no even need to make a diff in theory, simply the new version. In many cases, it is sufficient to simply send an email with: > There's a bug in the function `handle_request` in `src/network/core.rs` that can cause it to return a double answer when invoked during a leap second. This fixes that issue: ... And just include the new function inside of the email body, without attachment. That should be sufficient for many cases, but many projects do not allow this and demand p.r.s.