It occurs to me that probably almost no one is aware that Rust's format!/println! syntax has support for named args. I think I've only seen it used once.
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I think I only know about it because I stumbled across this monstrous 130 line format string with 14 args in rustdoc: github.com/rust-lang/rust
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lol, rustdoc is the only reason I know about them too
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I think it's because started the rustdoc web backend, and he did the std::fmt renovation back in the day: github.com/rust-lang/rust