Say I have a text which contains mixed CR, LF and CRLF newline separators.

Like this: "\n \n Lorem \r Ipsum \n is \r\n simply \n dummy \r\n text of \n the printing \r and typesetting industry. \n \n".

I’m loading this text into simple text editor (NSTextView/UITextView). Visually newline separators looks the same; just a new line.

I can navigate through text in simple text editor, select text, cut, copy, paste, …

Question: How can I get line and column number from absolute character location (i.e selection NSRange)? And also, how can I get absolute character location from known line and column number?

Thanks!