bug#7179: 23.2; copyright-update on spanning copyright-limit

[Lars Ingebrigtsen]

Kevin Ryde <user42@zip.com.au> writes:

> If you're unlucky enough to have a copyright notice spanning the
> `copyright-limit' position in the buffer then M-x copyright-update makes
> a bit of a mess inserting the current year at the wrong place.  For
> example,
>
>     (progn
>       (require 'copyright)
>       (switch-to-buffer "foo")
>       (erase-buffer)
>       (insert (make-string (- copyright-limit 14) ?x) "\n"
>               "\nCopyright 2006, 2007, 2008 Foo Bar\n\n")
>       (copyright-update))
>
> gives
>
>     Copyright 20, 1006, 2007, 2008 Foo Bar
>
> where I expected
>
>     Copyright 2006, 2007, 2008, 2010 Foo Bar

This should now be fixed in Emacs 28.

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