Dear community, I am developing a macro that receives the prototype of a function and needs to generate different code depending on its arguments. Particularly, I need to distinguish when a mutable reference is passed and when not. I have included below a code snippet that reproduces the issue in …

Issue with nested macro_rules! and matching types with mutable borrow

H2CO3 February 14, 2022, 12:04pm 2

This came up recently. (TL;DR: "any type" is not guaranteed to start with &mut, so it can't be matched by &mut.)

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