
Umlaut =? mutated vowel
Am I right that diacritic = Umlaut: ö=oe; ä=ae; ü=ue; ß=ss

When I search for "König", then "Koenig" should be searched at the same time (like: König | Koenig).

But with diacritic or without or with Regex the wished files are not found at the same time.
What option must I look for, or is it at the moment not possible to have look for files in this way ?
Are there other (german languaged) user, who have solved the problem?
Or want to have a search option like that

Greetings Marti