Homepage: https://www.gnu.org/software/emacs
Author: Ralph Schleicher
Display battery status information
There is at present support for GNU/Linux, BSD, macOS, and Windows. This library supports: - UPower (https://upower.freedesktop.org) via D-Bus API. - The `/sys/class/power_supply/' files of Linux >= 2.6.39. - The `/proc/acpi/' directory structure of Linux 2.4.20 and 2.6. - The `/proc/apm' file format of Linux version 1.3.58 or newer. - BSD by using the `apm' program. - Darwin (macOS) by using the `pmset' program. - Windows via the GetSystemPowerStatus API call.