"Wrap line after at most this many characters.
If this is nil, lines in messages will be wrapped to fit in the
current window. If this is a number, lines will be wrapped after
this many characters or at the window width (whichever one is
"Wrap line after at most this many characters.
If this is nil, lines in messages will be wrapped to fit in the
current window. If this is a number, lines will be wrapped after
this many characters or at the window width (whichever one is