The legends include tales that it was invented in Europe to celebrate the defeat of the Umayyad forces by the Franks at the Battle of Tours in 732, with the shape representing the Islamic crescent; that it was invented in Buda; or, according to other sources, in Vienna in 1683 to celebrate the defeat of the Ottomans by Christian forces in the siege of the city, as a reference to the crescents on the Ottoman flags, when bakers staying up all night heard the tunneling operation and gave the alarm.