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Re: [PATCH] battery.el, upower fixes

From: Michael Albinus
Subject: Re: [PATCH] battery.el, upower fixes
Date: Tue, 04 Feb 2020 21:16:10 +0100
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/28.0.50 (gnu/linux)

Stefan Monnier <address@hidden> writes:

>> +(defcustom battery-upower-device
>> +  (dbus-ignore-errors
>> +    (battery-upower-device-autodetect :battery))
> I think there's a possibility that the set of devices changes over time
> (e.g. on my machine (battery-upower-device-list) currently only shows
> battery_BAT0, but I can insert a second battery and I'd expect the list
> to then include a battery_BAT1 as well).  So maybe we should instead
> allow a special value (e.g. nil) to mean "autodetect" and then do the
> autodetection dynamically.  WDYT?

Usually, D-Bus services send a signal when a device is added/removed. IIUC
org.freedesktop.UPower.DeviceAdded and org.freedesktop.UPower.DeviceRemoved
serve for that purpose. So you shall subscribe to those signals and
handle them accordingly.

>         Stefan

Best regards, Michael.

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