What does an umlaut do in French?
Whereas the umlaut represents a sound shift, the diaeresis indicates a specific vowel letter that is not pronounced as part of a digraph or diphthong. In French words such as Noël (Christmas), the two dots are there to remind you not to fuse the two vowels into one sound, but to pronounce the O and the E separately.
Does French use Ü?
Letter Ü The letter Ü is present in the German, Hungarian, French, Turkish, Uyghur Latin, Estonian, Azeri, Turkmen, Crimean Tatar, Kazakh Latin and Tatar Latin alphabets, where it represents a close front rounded vowel [y]. ... Standard Mandarin Chinese pronunciation has both the sounds [y] and [u].