Re: How to update major modes?

[Richard Stallman]

    If you only plan to make minor changes, such as the one you mentioned,
    you don't need a copyright assignment.  When you'll start to give
    contributions that are more than, say, 20 lines, you'll have to get the
    legal paper on,

Actually, we would also need papers for a collection of minor changes
that add up to 15 or so real lines of text.