bug: gnus-summary-reselect-current-group deletes cached articles.

bug: gnus-summary-reselect-current-group deletes cached articles.

[John Griffith]

Synopsis: gnus-summary-reselect-current-group sometimes causes cached
          articles to be deleted from cache.

System: Gnus v0.30 and XEamcs 19.13
        gnus-summary-line-format's value is:
             "%U%R %I%(%[%5N %4L:%B%-20,20uB%]%) %s\n"

Example:

1) Start XEmacs, gnus and enter gnu.emacs.gnus

   here's the summary buffer :

----------------------------------------------------------------------
   [  12:  Andreas Schwab     ] Re: Gnus/W3 interface - default browser is 
   [  20:  David Ishee        ] Re: Help!  Gnus 5.1, OS/2, and uudecoding
   [  24:  Steven L. Baur     ] Re: how to turn off the highlighting of hea
   [  17: +Lars Magne Ingebrig] Re: How to use MIME?
O  [  13:  Steinar Bang       ] Lowering score on noisemakers
O  [  31:  Robin Stephenson   ] New installation of Gnus 5.0.13 - help with
   [  53:  Johan Holmberg     ] Problem with threading in GNUS 5.1 ?
   [  40:  Greg Stark         ] Re: Q: Reading mail with GNUS
!* [  25:  Robin Stephenson   ] SCORE files - I have `problems' with mine
!* [  11: +Per Abrahamsen     ] Re: Who hosed threading?
!* [  28:  Paul D. Smith      ] Re: your .x files
----------------------------------------------------------------------

2) Read a message by Lars:

----------------------------------------------------------------------
R  [  17: +Lars Magne Ingebrig] Re: How to use MIME?
----------------------------------------------------------------------

3) Mark message with !:

----------------------------------------------------------------------
!  [  17: +Lars Magne Ingebrig] Re: How to use MIME?
----------------------------------------------------------------------

   The article is now in my newscache.

4) C-u Z R : Reread the group showing all articles:

   part of summary:

----------------------------------------------------------------------
O  [  12: +Per Abrahamsen     ] Re: How to use MIME?
O    <  13:  Francesco Potorti` > 
!    <  17: +Lars Magne Ingebrig> 
----------------------------------------------------------------------

   The article is NOT in cache now.

5) c y: leave group            ->  Article still not there.
6) q : quit gnus               ->  Article still not there.
7) C-x C-c : exit XEmacs       ->  Article still not there.
8) xemacs : start new xemacs   ->  Article still not there.
9) M-x gnus : start gnus       ->  Article still not there.
10) enter gnu.emacs.gnus       ->  Article still not there.

   New summary buffer:
----------------------------------------------------------------------
!  [  17: +Lars Magne Ingebrig] Re: How to use MIME?
!* [  25:  Robin Stephenson   ] SCORE files - I have `problems' with mine
!* [  11: +Per Abrahamsen     ] Re: Who hosed threading?
!* [  28:  Paul D. Smith      ] Re: your .x files
----------------------------------------------------------------------

  Article is still not in cache.

11) Reread Lars's article -> Now the article is back.

12) If I c y now the message is saved.

----------------------------------------------------------------------
!* [  17: +Lars Magne Ingebrig] Re: How to use MIME?
!* [  25:  Robin Stephenson   ] SCORE files - I have `problems' with mine
!* [  11: +Per Abrahamsen     ] Re: Who hosed threading?
!* [  28:  Paul D. Smith      ] Re: your .x files
----------------------------------------------------------------------

To make things even stranger, if you mark two or more articles before
doing C-u Z R some of them may or may not be deleted from the cache.
I *think* it might have something to do with what line the cursor is
on (in the summary buffer) when you type C-u Z R.