Re: Recovering playback state of multiple playlists and over multiple sessions

[Yoni Rabkin]

Yuchen Pei <hi@ypei.me> writes:

> Yoni Rabkin <yoni@rabkins.net> writes:
>
>> Yuchen Pei <hi@ypei.me> writes:
>>
>>> Yoni Rabkin <yoni@rabkins.net> writes:
>>>
>>>> Yuchen Pei <hi@ypei.me> writes:
>>>>
>>>>> I don't really save or restore emacs sessions.  This is because I
>>>>> have
>>>>> an emacsclient on all the time until an untimely death because
>>>>> something goes terribly wrong, and if I make it revive from that
>>>>> state
>>>>> I fear it could go into a death loop.  This is why I would rather
>>>>> have
>>>>> an emms-specific feature for this.
>>>>
>>>> We may be speaking past each other. If you don't restart emacs,
>>>> why
>>>> do
>>>> you need a function to save the playlist position?
>>>
>>> As I said, things can go wrong, and emacs crashes.  Sometimes this
>>> happens more often than other times.  But especially after long
>>> sessions of emacs is it hard to recover the position from (my)
>>> memory.
>>
>> This is a slightly different situation that what we've
>> discussed. Previously, I understood it to be merely saving playlist
>> positions so that they can be restored later. But now this is
>> described
>> as a case of hardening Emms against an Emacs crash.
>>
>> Therefore, what you are describing sounds more similar to Emacs'
>> auto-save feature.
>>
>> What that be a good way of describing it?
>
> Thanks for clarifying.  I suppose that covers most of my usecase,
> though I think there's not much difference between saving and 
> auto-saving, as the latter could be simply implemented as a
> run-at-times with the former if one can tolerate a bit of loss. 
> "Saving" is a more universal feature and probably needed by more
> people other than me, and I'll be content to have a "saving" which 
> I can use run-at-times to risk losing the bit in the time interval.

In that case, why not solve half of your problem quickly by adding a
function to `emms-player-started-hook' that iterates over your playlists
and saves them? That hook is certainly well used in Emms.

-- 
   "Cut your own wood and it will warm you twice"