\n is not an acceptable key value?

[Gilberto]

Hi! Im having some troubles with multilines values. Im trying to add a key that has as content multiple \n but it doesn't work and im not sure why.

You can reproduce the error with this simple code:
a = configobj.ConfigObj(infile=['a="""line1 \n line2 \n line3"""'])

lib/python3.8/site-packages/configobj.py", line 1318, in _load
    raise error
configobj.ParseError: Invalid line ('a="""line1 \n line2 \n line3"""') (matched as neither section nor keyword) at line 1.

[Rob Dennis]

The next action is to see if still happens with other string literals (or something more dynamic), based on that, I'll determine if this is more bug or more documentation