Re: Timer out of nowhere

[Lluís]

Michael Heerdegen writes:

> Lluís <address@hidden> writes:
>> Every once in a while, I get this error:
>> 
>> Debugger entered--Lisp error: (error "Selecting deleted buffer")
>> adict-guess-dictionary-maybe(#<killed buffer>)
>> apply(adict-guess-dictionary-maybe #<killed buffer>)
>> byte-code("r\301\302H\303H\"\210)\301\207" [timer apply 5 6] 4)
>> timer-event-handler([t 0 2 0 t adict-guess-dictionary-maybe
>> (#<killed buffer>) idle 0])
>> 
>> This is from [1].

> Yes, I see the same since I've upgraded my emacs.

>> The strange part is that I just killed every possible buffer (in case
>> it was a local timer on any of them), and `timer-list' shows
>> absolutely no entry with `adict-guess-dictionary-maybe'.

> It's in `timer-idle-list'.

Aha, I didn't look into that one, thanks.


>> Any ideas on how to track this problem?

> It's a bug in auto-dictionary.  I guess that in prior Emacs version, the
> problem was also there, but just no message was raised.

> Anyway, once `auto-dictionary-mode' calls `run-with-idle-timer', the
> timer stays in `timer-idle-list' even after its buffer has been killed.

> I think this is not hard to fix.  The timer runs
> `adict-guess-dictionary-maybe'.  This function should just check if the
> BUFFER argument is `buffer-live-p'.  If it is not, it just has to cancel
> `adict-timer'.

The timer is stored in a buffer-local variable, so it has to be removed when the
buffer is killed. In any case, I've found out that the version in github [1]
contains a fix for this, while the "official" release does not [2].

Please update your copies accordingly (I think I got mine from ELPA).


[1] https://github.com/nschum/auto-dictionary-mode
[2] http://nschum.de/src/emacs/auto-dictionary/


-- 
 "And it's much the same thing with knowledge, for whenever you learn
 something new, the whole world becomes that much richer."
 -- The Princess of Pure Reason, as told by Norton Juster in The Phantom
 Tollbooth