According to Unicode, the following codepoint sequences should be considered lines terminators

Similarly, the standard defines "white spaces" loosely as "blanks, horizontal and vertical tabs", however there are more white space characters in unicode https://en.wikipedia.org/wiki/Whitespace_character

What I would like to do:

* Define new-line and white-spaces as grammar term, with an explicit list of codepoint sequences.   

* In phase 2, replace all characters which represent a line termination with Line Feed (which is reverted later for raw string literals). this would notably fix https://wg21.link/cwg1655

* It would also help to mandate that trailing whitespaces are removed in phase 2

Does that make sense to anyone ?