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bug#28843: 26.0.90; gnus kills unsaved message buffer
From: |
Nick Helm |
Subject: |
bug#28843: 26.0.90; gnus kills unsaved message buffer |
Date: |
Wed, 08 Nov 2017 16:49:19 +1300 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/26.0.90 (darwin) |
On Tue, 7 Nov 2017 at 18:41:24 -0800, Eric Abrahamsen wrote:
> Nick Helm <nick@tenpoint.co.nz> writes:
>
>> On Thu, 26 Oct 2017 at 13:52:13 +1300, Nick Helm wrote:
>>
>>> On Sun, 15 Oct 2017 at 20:46:25 +1300, Nick Helm wrote:
>>>
>>>> Gnus exits, and the unsaved message buffer dies with it, without prompts
>>>> to save.
>>>
>>> It seems the behaviour is intentional ... This commit changed
>>> `gnus-clear-system' to include this:
>>>
>>> #+begin_src emacs-lisp
>>> ;; Kill Gnus buffers.
>>> (do-auto-save t)
>>> (dolist (buffer (gnus-buffers))
>>> (when (gnus-buffer-exists-p buffer)
>>> (with-current-buffer buffer
>>> (set-buffer-modified-p nil)
>>> (when (local-variable-p 'kill-buffer-hook)
>>> (setq kill-buffer-hook nil))))
>>> (gnus-kill-buffer buffer))
>>> #+end_src
>>>
>>> So gnus is at least auto-saving draft messages before zapping them.
>>>
>>> Is there a better way to do this though? I think the user should at
>>> least have some warning that an unsaved buffer is about to be
>>> automatically killed.
>>
>> One solution (though not a very good one IMHO) would be to make the
>> auto-save depend on the user's value of guns-interactive-exit. For
>> example:
>>
>> --- a/lisp/gnus/gnus-start.el 2017-10-26 12:49:43.000000000 +1300
>> +++ b/lisp/gnus/gnus-start.el 2017-10-26 12:45:12.000000000 +1300
>> @@ -731,11 +731,12 @@
>> (kill-buffer (get-file-buffer (gnus-newsgroup-kill-file nil))))
>> (gnus-kill-buffer nntp-server-buffer)
>> ;; Kill Gnus buffers.
>> - (do-auto-save t)
>> (dolist (buffer (gnus-buffers))
>> (when (gnus-buffer-exists-p buffer)
>> (with-current-buffer buffer
>> - (set-buffer-modified-p nil)
>> + (unless gnus-interactive-exit
>> + (do-auto-save t t)
>> + (set-buffer-modified-p nil))
>> (when (local-variable-p 'kill-buffer-hook)
>> (setq kill-buffer-hook nil))))
>> (gnus-kill-buffer buffer))
>
> We could also consider mirroring the behavior of Emacs itself: if
> `gnus-interactive-exit' is non-nil, prompt the user whether to save
> changed buffers or not.
Yes, that would be better.
One way to do that might be to kill unsaved message buffers earlier in
the gnus exit process, say with `gnus-exit-gnus-hook', and rely on
Emacs's standard unsaved buffer query to do `save-buffer' or
`message-dont-send'. Gnus is still running at that point, so it should
save to the drafts group just fine.
Also, the doc for `message-dont-send' says it does an auto-save, but the
code says it actually does `save-buffer'.