[MC-117742] Functions don't support special characters

Create file data\functions\special\characters.mcfunction with
```
say ÄÖÜẞäöüßêéè
```
use command
```
/function special:characters
```
Chat:*
```
[@] ???????????
```

*my first try worked correctly but after I changed from editing .mcfunction with notpad++ to windows editor the special characters broke. After that everything I tryed couldn'd fix it (new world; new function with notpad++; use /reload; don't use /reload;...)