Macro format_eq 

macro_rules! format_eq {
    ($lhs:expr, [$($rhs:literal),* $(,)?]) => { ... };
    ($fmt:literal, $lhs:expr, [$($rhs:literal),* $(,)?]) => { ... };
}

Formats the $lhs expression using Display and asserts the $rhs string literals.

Passes $fmt to Display with {} as default if omitted. Appends "\n" to each $rhs literal and asserts the concatenation thereof.

With the pretty_assertions feature, the respective assert_eq! macro is used. In this way, the Unicode combining diacritical marks are rendered as in the examples using format_eq!.