Re: how to delete a recalcitrant message in an IMAP mail group?

[ShengHuo ZHU <zsh@cs.rochester.edu>]

palmieri@math.washington.edu (John H. Palmieri) writes:

> Kai.Grossjohann@CS.Uni-Dortmund.DE (Kai Großjohann) writes:
> 
>> palmieri@math.washington.edu (John H. Palmieri) writes:
>> 
>>> By the way, if I open the file with `G f' in the group buffer, the
>>> message is visible.
>> 
>> I see.  Look at its Message-ID -- does that occur twice, perhaps?
>> This would explain why one copy isn't shown.
> 
> No, the Message-ID is unique.  I have even deleted (using `B DEL') all
> of the visible messages in the group, leaving that single message in
> the file.  It still doesn't become visible in the Summary buffer (in
> fact, I can't enter the summary buffer, because gnus thinks there are
> no articles in the group).

Maybe cache or agent hide the article. You may evaluate
      (setq gnus-use-cache nil gnus-agent nil)
then try `M-g C-u RET' to enter the group.

ShengHuo