in log4j-api-scala_3/src/main/scala/org/apache/logging/log4j/scala/LoggerMacro.scala [450:459]
private def logMessageArgs(underlying: Expr[Logger], level: Expr[Level], message: Expr[CharSequence],
args: Expr[Seq[Any]]) (using Quotes) = {
val anyRefArgs = formatArgs(args)
if(anyRefArgs.isEmpty)
'{ if ($underlying.delegate.isEnabled($level)) $underlying.logMessage($level, null, $message.toString, null) }
else if(anyRefArgs.length == 1)
'{ if ($underlying.delegate.isEnabled($level)) $underlying.delegate.log($level, $message.toString, ${anyRefArgs.head}) }
else
'{ if ($underlying.delegate.isEnabled($level)) $underlying.delegate.log($level, $message.toString, ${Expr.ofSeq(anyRefArgs)}*) }
}