bug#51934: 28.0.60; gnus-summary-delete-article will hang emacs if nnimap expunge to NO

[Feng Shu]

Lars Ingebrigtsen <larsi@gnus.org> writes:

> "Feng Shu" <tumashu@163.com> writes:
>
>> Gnus will hang emacs when run gnus-summary-delete-article and nnimap expunge 
>> return NO.
>>
>>    651 NO System busy!
>>      NO System busy!
>>
>>    Process *nnimap* deleted
>
> Can you (setq debug-on-quit t) and `C-g' when it hangs?  Post the
> resulting backtrace.

Debugger entered: ("Quit")
  nnimap-wait-for-response(296)
  nnimap-get-response(296)
  nnimap-command("UID EXPUNGE %s" "842,845")
  nnimap-delete-article((842 845))
  nnimap-request-expire-articles((842 845) "INBOX" "imap.qq.com" force)
  gnus-request-expire-articles((842 845) "nnimap+imap.qq.com:INBOX" force)
  gnus-summary-delete-article(nil)
  funcall-interactively(gnus-summary-delete-article nil)
  call-interactively(gnus-summary-delete-article nil nil)
  command-execute(gnus-summary-delete-article)


my config:

        (nnimap "imap.qq.com"
                (nnimap-record-commands t)
                (nnimap-expunge t)
                (nnimap-stream ssl)
                (nnimap-fetch-partial-articles t))


18:50:01 [imap.qq.com] 296 UID EXPUNGE 842,845


329 NO System busy!
 NO System busy!






>
> The code is supposed to exit if the server closes the connections, but
> it sounds like there's a bug there, but it's not clear where.

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