When I double-click and open a csv file in Excel, the OSX Excel always opens it in Macintosh format destroying the visualisation of UTF-8 files with malformatted umlaut characters such as ö and ä. I want to avoid opening files in OSX Excel in UTF-8 format by manually typing the UTF-8 format with options such as
How can I change the default file option to UTF-8 in OSX so files can be opened in UTF-8, instead of Macintosh format, automatically even in the GUI and Finder?
Microsoft Excel for Mac: Version 15.30.
OSX: macOS Sierra, Version 10.12.1
Related questions in Superuser but not focus on OSX