bug#24018: 25.1.50; gnus: switching from Summary to Group sometimes puts point on wrong line

bug#24018: 25.1.50; gnus: switching from Summary to Group sometimes puts point on wrong line

[James Cloos]

With current emacs master, whenever you quit a *Summary* buffer, at least
via q or c y, if you had gone from one group to another with n or k or
the like then when back in *Group* point will be on the leftmost column
of the group you first enterred from *Group* rather than on the next group,
as it use to do and still does if you quit *Summary* w/o switching its
group.

I hadn't updated since gnus' git repo became obsolete, so I can only
note that the regression occurred sometime since then.

I do know that d0c0b71d889ff223d2e5073b733f4047d541343b was the first
commit where I saw this.



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 of 2016-07-17 built on carbon.jhcloos.org
Repository revision: e333157cba3b4ffd7c25f8210a6aa5a21ae10de7
Windowing system distributor 'The X.Org Foundation', version 11.0.11699901
System Description:	Gentoo Base System release 2.2

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bug#24018: 25.1.50; gnus: switching from Summary to Group sometimes puts point on wrong line

[Stephen Berman]

On Sun, 17 Jul 2016 13:50:22 -0400 James Cloos <cloos@jhcloos.com> wrote:

> With current emacs master, whenever you quit a *Summary* buffer, at least
> via q or c y, if you had gone from one group to another with n or k or
> the like then when back in *Group* point will be on the leftmost column
> of the group you first enterred from *Group* rather than on the next group,
> as it use to do and still does if you quit *Summary* w/o switching its
> group.
>
> I hadn't updated since gnus' git repo became obsolete, so I can only
> note that the regression occurred sometime since then.
>
> I do know that d0c0b71d889ff223d2e5073b733f4047d541343b was the first
> commit where I saw this.

FWIW, I just tried your recipe and could not reproduce the problem;
after quitting the last Summary buffer, point was on the next group in
the Group buffer, not on the group I first entered.  This is with

GNU Emacs 25.1.50.18 (x86_64-suse-linux-gnu, GTK+ Version 3.14.15)
 of 2016-07-14 built on rosalinde
Repository revision: a8e1414c0d66903884059361ecc8ec70da37cf35
Windowing system distributor 'The X.Org Foundation', version 11.0.11601000
System Description:	openSUSE 13.2 (Harlequin) (x86_64)

which postdates the commit you cited above.

Steve Berman

bug#24018: 25.1.50; gnus: switching from Summary to Group sometimes puts point on wrong line

[James Cloos]

I tried downgrading from master to 25.0.95.  The bug does not occur
there, so the regression occurred sometime after that.

Bisecting will be difficult at best.  It takes several minutes for gnus
to start up, and I have to have email working during business hours....

-JimC
-- 
James Cloos <cloos@jhcloos.com>         OpenPGP: 0x997A9F17ED7DAEA6

bug#24018: 25.1.50; gnus: switching from Summary to Group sometimes puts point on wrong line

[Lars Ingebrigtsen]

James Cloos <cloos@jhcloos.com> writes:

> With current emacs master, whenever you quit a *Summary* buffer, at least
> via q or c y, if you had gone from one group to another with n or k or
> the like then when back in *Group* point will be on the leftmost column
> of the group you first enterred from *Group* rather than on the next group,
> as it use to do and still does if you quit *Summary* w/o switching its
> group.

I'm not sure I follow that sentence.  :-)

But I do see point in the group buffer being on a seemingly random
buffer after I `q' from the summary buffer.  I think this is a duplicate
of bug#23021.

-- 
(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no

bug#24018: 25.1.50; gnus: switching from Summary to Group sometimes puts point on wrong line

[James Cloos]

>>>>> "LI" == Lars Ingebrigtsen <larsi@gnus.org> writes:

LI> But I do see point in the group buffer being on a seemingly random
LI> buffer after I `q' from the summary buffer.  I think this is a duplicate
LI> of bug#23021.

For me point doesn't end up on a random line, but always the line of the
group I first selected.

It used to be when reading multiple groups w/o showing The *Group* buffer
that when one finally switch to *Group* point was on the next group to
read.  That still works iff one quits *Summary* w/o switching groups.

After reading bug#23021 I looked at *Group* w/o exiting *Summary*, and
point there had moved to the first column (as if move-beginning-of-line
had been run).

-JimC
-- 
James Cloos <cloos@jhcloos.com>         OpenPGP: 0x997A9F17ED7DAEA6

bug#24018: 25.1.50; gnus: switching from Summary to Group sometimes puts point on wrong line

[Lars Ingebrigtsen]

James Cloos <cloos@jhcloos.com> writes:

> It used to be when reading multiple groups w/o showing The *Group* buffer
> that when one finally switch to *Group* point was on the next group to
> read.  That still works iff one quits *Summary* w/o switching groups.

I've done some more extensive testing now.

When moving between groups with `n' or the like, point doesn't move in
the group buffer.  (I think that should probably be fixed...)

But when I finally `q' out of the group, point in the group buffer does
go to the next group line, so I'm not able to reproduce this problem
exactly.

`Q' didn't, and I just fixed that.  Is it possible that you also saw
this with `Q' and not `q'?

-- 
(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no

bug#23021: bug#24018: 25.1.50; gnus: switching from Summary to Group sometimes puts point on wrong line

[Lars Ingebrigtsen]

Ah, now I'm able to reproduce this.  If I enter a debbugs group, then
point in the group buffer moves to the beginning of the line.  But only
if the group buffer is visible in a window.

Now to debug it...  *ugh*

-- 
(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no

bug#24018: bug#23021: bug#24018: 25.1.50; gnus: switching from Summary to Group sometimes puts point on wrong line

[Lars Ingebrigtsen]

Lars Ingebrigtsen <larsi@gnus.org> writes:

> Ah, now I'm able to reproduce this.  If I enter a debbugs group, then
> point in the group buffer moves to the beginning of the line.  But only
> if the group buffer is visible in a window.
>
> Now to debug it...  *ugh*

Found it!  Fix in Emacs 27.1.

-- 
(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no