[Help-nano] Disable justify on ^J

[Yves Goergen]

    Hello,
    
    I'm facing an issue with using nano on Ubuntu Linux through PuTTY on
    Windows. I need to copy and paste a few lines of a configuration
    file into the file in the editor. Naturally the file uses Unix line
    endings (LF only) because it can also be copied over directly.
    Unfortunately, the two line ending characters, CR and LF, have the
    corresponding key input ^M and ^J. Now while ^M (CR) is actually
    documented to insert a new line (which is exactly what the Enter key
    does), ^J (LF) does not do the same thing, or nothing at least, but
    instead it messes up the document by removing some line breaks over
    the place.
    
    Interestingly, LF, the Unix line ending, causes justify, whereas CR,
    that alone is the Mac OS classic line ending, causes a new line. CR
    and LF, Windows line ending, would do both. I don't understand why
    the thing isn't broken everywhere but actually seems to work for
    interactive Linux users.
    
    So I need a way to permanently disable or remap the ^J hotkey. How
    does that work? I'm not interested in justify, this is a simple text
    editor, not a word processor.
    
    In the current state, I cannot use nano to maintain server config
    files through SSH. I'm not sure how to solve this otherwise. I don't
    want to go back to vim, and I have no experience with emacs. Are
    there other editors that are similarly easy to use as nano but don't
    have this major issue?
    
    Actually I can't remember having this trouble before. Is justify
    (with that hotkey) a new feature that was added with Ubuntu 16.04?
    Or even later through a security update?
    
    Yves
    
    PS: Please CC me because I'm not subscribed to the list. (Mailing
    lists are too complicated to use for single use.)