Re: Uninformative comment in files.el

[Richard Stallman]

    But then please remove the useless paraphrasing comment and add a useful
    comment that explains why overlays should be removed.  And why the mark
    should also be manipulated.

Sure.

The issue with the mark is basically the same: it often won't point at
the right place any more.  But maybe that's not as important as it is
with overlays, since there's always only one mark.  So if the mark is
not at the right place, you can ignore it.

Thus, I guess it is better not to alter anything about the mark.