spdlog-rs 0.5.3

Fast, highly configurable Rust logging crate, inspired by the C++ logging library spdlog
Documentation 
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use spdlog::formatter::{pattern, Pattern};

fn custom_pat_creator() -> impl Pattern {
    ()
}

fn pattern() {
    pattern!("{logger} {$custom_pat}", {$custom_pat} => custom_pat_creator, {$} => custom_pat_creator);
    pattern!("{logger} {$custom_pat}", {$custom_pat} => custom_pat_creator, {$custom-pat2} => custom_pat_creator);
    pattern!("{logger} {$custom_pat}", {$custom_pat} => custom_pat_creator, {$2custom_pat} => custom_pat_creator);
}

fn main() {}