Re: Bug when jumping to group in empty topic?

[Emerick Rogul <emerick@cs.bu.edu>]

Lars Magne Ingebrigtsen writes:

> But if these groups are permanently visible, surely they'll be, er,
> permanently visible.  :-) So is the real bug here that these groups
> that are supposed to be in the group buffer all the time aren't
> there?

This is getting confusing, so let me draw some pictures :-)

Here's how my summary buffer is logically laid out (note that I keep
nnfolder groups permanently visible):

[ Gnus -- 0 ]
  [ archives -- 0 ]
    [ current -- 0 ]
       [5]    0: nnfolder+archive:sent-mail.2003.gz
       [5]    0: nnfolder+archive:sent-news.2003.gz
    [ old -- 0 ]
      [ 2002 -- 0 ]
         [5]    0: nnfolder+archive:sent-mail.2002.gz
         [5]    0: nnfolder+archive:sent-news.2002.gz
  [ news -- 0 ]
     [5]    *: nntp+quimby.gnus.org:gnus.ding

However, I usually leave both the "2002" topic and the "old" topic
unexpanded, so this is how that looks:

[ Gnus -- 0 ]
  [ archives -- 0 ]
    [ current -- 0 ]
       [5]    0: nnfolder+archive:sent-mail.2003.gz
       [5]    0: nnfolder+archive:sent-news.2003.gz
    [ old -- 0 ]...
  [ news -- 0 ]
     [5]    *: nntp+quimby.gnus.org:gnus.ding

In addition, I have gnus-topic-display-empty-topics set to nil, so the
following is what I actually see in my Summary buffer ("old" is
hidden, since its considered empty):

[ Gnus -- 0 ]
  [ archives -- 0 ]
    [ current -- 0 ]
       [5]    0: nnfolder+archive:sent-mail.2003.gz
       [5]    0: nnfolder+archive:sent-news.2003.gz
  [ news -- 0 ]
     [5]    *: nntp+quimby.gnus.org:gnus.ding

In this scenario, if my cursor is all the way at the bottom of the
Summary buffer and I hit 'j' to jump to the
nnfolder+archive:sent-mail.2002.gz group, the group and its containing
topics are shown in the wrong place, like this:

[ Gnus -- 0 ]
  [ archives -- 0 ]
    [ current -- 0 ]
       [5]    0: nnfolder+archive:sent-mail.2003.gz
       [5]    0: nnfolder+archive:sent-news.2003.gz
  [ news -- 0 ]
     [5]    *: nntp+quimby.gnus.org:gnus.ding
    [ old -- 0 ]
      [ 2002 -- 0 ]
         [5]    0: nnfolder+archive:sent-mail.2002.gz

I'd expect the "old" topic to show up under "archives", not under
"news".  I know this is probably a really bizarre edge-case, but the
behavior still seems pretty weird... :-)

I hope this makes more sense now, sorry it's so long-winded!

-Emerick
-- 
-------------------------------------------------------------------------
Emerick Rogul             /\/     "how young are you, how old am i?
emerick@cs.bu.edu         /\/      let's count the rings around my eyes."
------------------------------------------------- 'i will dare', the mats