Start Emacs with Emacs -Q. Type some text and move point into that text. Do
M-x longlines-mode and then M-: (insert "\n") This will insert a space instead of "\n". In GNU Emacs 22.1.50.1 (i386-mingw-nt5.1.2600) of 2007-07-04 Windowing system distributor `Microsoft Corp.', version 5.1.2600 configured using `configure --with-gcc (3.4) --cflags -Ic:/g/include'
