Macro lprintln 

macro_rules! lprintln {
    (plugin, $($arg:tt)*) => { ... };
    (info, $($arg:tt)*) => { ... };
    (warn, $($arg:tt)*) => { ... };
    (error, $($arg:tt)*) => { ... };
    (verbose, $($arg:tt)*) => { ... };
    ($($arg:tt)*) => { ... };
}

プラグイン用ログに出力するprintln!マクロ。

lprintln!("This is a plugin log message.");  // デフォルトはpluginログに出力
lprintln!(plugin, "This is also a plugin log message.");
lprintln!(info, "This is an info log message.");
lprintln!(warn, "This is a warning log message.");
lprintln!(error, "This is an error log message.");
lprintln!(verbose, "This is a verbose log message.");