bat: find battery status when multiple batteries

Battery status was previously assumed to the first battery's status. This is
wrong as it doesn't support the case where the first battery is full and the
second is discharging, therefor showing battery percentage to 100% when the
actual battery percentage is lower.

diff --git a/widgets/bat.lua b/widgets/bat.lua
index 8e483f75dd8a2127fd1c54541be0d731ab8dc8e4..38104b5c417f64f0f4db31bca53afa4322a8c1fe 100644 (file)
--- a/widgets/bat.lua
+++ b/widgets/bat.lua
@@ -108,7 +108,16 @@ local function worker(args)
             end
         end
 
+        -- When one of the battery is charging, others' status are either
+        -- "Full", "Unknown" or "Charging". When the laptop is not plugged in,
+        -- one or more of the batteries may be full, but only one battery
+        -- discharging suffices to set global status to "Discharging".
         bat_now.status = bat_now.n_status[1]
+        for _,status in ipairs(bat_now.n_status) do
+            if status == "Discharging" or status == "Charging" then
+                bat_now.status = status
+            end
+        end
         bat_now.ac_status = tonumber(first_line(string.format("%s%s/online", pspath, ac))) or "N/A"
 
         if bat_now.status ~= "N/A" then