func (l *logger) Infof(format string, vals ...interface{}) {
	l.mut.Lock()
	defer l.mut.Unlock()
	s := fmt.Sprintf(format, vals...)
	l.logger.Output(2, "INFO: "+s)
	l.callHandlers(LevelInfo, s)
}
func (l *logger) Infof(format string, vals ...interface{}) {
	l.mut.Lock()
	defer l.mut.Unlock()
	s := fmt.Sprintf(format, vals...)
	l.logger.Output(2, "INFO: "+s)
	l.callHandlers(LevelInfo, s)
}
func ( l * logger ) Infof ( format string , vals ... interface { } ) { l . mut . Lock ( ) defer l . mut . Unlock ( ) s := fmt . Sprintf ( format , vals ... ) l . logger . Output ( 2 , " " + s ) l . callHandlers ( LevelInfo , s ) }
// Infof logs a formatted line with an INFO prefix.
Infof logs a formatted line with an INFO prefix .