yosh

Think I just ran into a wart in Rust. Luckily I've got the time and enough experience at this point to know I'll be able to solve this, but others might not. Basically it's this: let foo = match bar { Some(bar) => bar, None => &make_bar()?, } where `bar` is borrowed.

Here's a reasonably long thread on a similiar situation from 2015: https://users.rust-lang.org/t/really-basic-lifetimes-in-match/2040 …. Using `.unwrap_or()` seems okay, but like takes 5 lines and has overhead. `unwrap_or_else()` doesn't work with error handling :( Could also use a closure inside both branches, but yuk.

I've recently run into something like this but didn't notice until CI failed -- because nightly includes some features to make pattern matching more ergonomic!