bug#72420: set-goal-column misbehaves with a line-prefix and visual-line-mode

[Eli Zaretskii <eliz@gnu.org>]

> From: "Martin Edstrom" <meedstrom@runbox.eu>
> CC: "72420" <72420@debbugs.gnu.org>
> Date: Wed, 07 Aug 2024 16:03:40 +0200 (CEST)
> 
> > > From: "Martin Edstrom" <meedstrom@runbox.eu>
> > > CC: "72420" <72420@debbugs.gnu.org>
> > > Date: Wed, 07 Aug 2024 14:07:45 +0200 (CEST)
> > > 
> > > But, it's odd that visual-line-mode does not affect it for you - it does for me. 
> > > 
> > > If I leave visual-line-mode off, then I get the behavior I expect (i.e. set-goal-column at column 2 is treated as column 6), which is useful.  Turning it on causes the command to behave in a way that is not useful, as I described.
> > 
> > If you leave visual-line-mode off, then type C-p twice from "z", don't
> > you see point go to the 3rd "*" of the line "**** h4"?  And if so,
> > isn't that what you meant by "the goal column actually seems to be
> > offset in some way influenced by the line prefix"?  Or did I
> > misunderstand what you consider a problem in the existing behavior?
> 
> Indeed, on that line, the behavior is the same with and without visual-line-mode, going to the 3rd "*".
> 
> However if I go up to a list item such as "- x...........", I observe different behavior.  With visual-line-mode, point ends up on the bullet, not on "x".
> 
> That is surprising, no?

Not to me, it isn't, but then I've hacked on that code too much...

Anyway, the problem is the difference in behavior between
visual-line-mode on and off, and you consider the behavior with the
mode off as correct?  Because this was not what your original report
said, AFAICT.