bug#57433: Emacs no longer moves point into visible port of the buffer

[Paul Pogonyshev <pogonyshev@gmail.com>]

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Also, the value of `magit-section' is different all three times, if that's
important.

Paul

On Sat, 27 Aug 2022 at 18:32, Paul Pogonyshev <pogonyshev@gmail.com> wrote:

> > Now, I put the point at the beginning of the third line ([^] is the
> point):
>
> Text content at position 32867:
>
> There is an overlay here:
>  From 32867 to 32901
>   evaporate            t
>   font-lock-face       magit-diff-file-heading-highlight
>
> There are text properties here:
>   font-lock-face       magit-diff-file-heading
>   keymap               [Show]
>   magit-section        [Show]
>
> > I press C-b, expecting that the point is moved to the end of the
> > previous line that I see. But it is not moved there
>
> Text content at position 29881:
>
> There is an overlay here:
>  From 29881 to 32867
>   evaporate            t
>   invisible            t
>
> There are text properties here:
>   font-lock-face       magit-diff-hunk-heading
>   keymap               [Show]
>   magit-section        [Show]
>
> > If I press C-b again, only now point is moved
>
> Text content at position 29880:
>
> There is an overlay here:
>  From 29858 to 29881
>   evaporate            t
>   font-lock-face       magit-diff-file-heading-highlight
>
> There are text properties here:
>   keymap               [Show]
>   magit-section        [Show]
>
> Paul
>
> On Sat, 27 Aug 2022 at 18:28, Eli Zaretskii <eliz@gnu.org> wrote:
>
>> > From: Paul Pogonyshev <pogonyshev@gmail.com>
>> > Date: Sat, 27 Aug 2022 18:12:49 +0200
>> > Cc: Gerd Möllmann <gerd.moellmann@gmail.com>,
>> >       57433-done@debbugs.gnu.org
>> >
>> > Actually, disregard that. It appears to be a Magit bug. If I switch the
>> buffer
>> > to any other mode, everything behaves as expected.
>>
>> Right.  I suspect that Magit puts something else there, not just the
>> invisible property.  What does describe-text-properties say at that
>> point?
>>
>

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