Re: Battery update

[Johannes Weiner <hannes@saeurebad.de>]

Hi,

Eli Zaretskii <eliz@gnu.org> writes:

>> From: Sven Joachim <svenjoac@gmx.de>
>> Date: Fri, 08 Aug 2008 07:56:43 +0200
>> Cc: 643@emacsbugs.donarmstrong.com, Emre Sahin <mail@emresahin.net>,
>> 	emacs-devel@gnu.org
>> 
>> On 2008-08-08 02:10 +0200, Chong Yidong wrote:
>> 
>> >        (if (battery-search-for-one-match-in-files
>> > 	    (list "/sys/class/power_supply/AC/online") "1" 0)
>> > 	   "AC"
>> 
>> FWIW, I don't have a /sys/class/power_supply/AC directory, but there is
>> /sys/class/power_supply/ACAD.  Seems the directory has moved somewhere
>> between kernel 2.6.22 and 2.6.25, see
>> http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=478937.
>
> So what, we are now going to chase this elusive directory till Kingdom
> Come?  I say let's stop supporting this feature until the Linux kernel
> developers make up their minds about the place and shape of this
> information.  Geez! that's even worse than Microsoft's zigzagging of
> some APIs.

From Documentation/feature-removal.txt:

What:   ACPI procfs interface
When:   July 2008
Why:    ACPI sysfs conversion should be finished by January 2008.
        ACPI procfs interface will be removed in July 2008 so that
        there is enough time for the user space to catch up.

But I doubt that it will happen soon, though.

Emacs from CVS should probably support the latest variant of this API.

	Hannes