Re: moving point over invisible and intangible text

[Richard Stallman]

    Indeed, though fixing bugs in that festering-mess-of-special-cases-and-
    half-solutions-to-obscure-problems we call `line-move' always seems to
    end up breaking other things; it's a bit scary to even think of it...

They don't break other things, but they often break line-move for
other cases.

Unfortunately I can't see what better alternative there is.  I don't
see any general principles that say what line-move ought to do.