From bd738827558e13dc4d6dcc1793d10882cc162338 Mon Sep 17 00:00:00 2001
From: Alexander Bocken <alexander@bocken.org>
Date: Sat, 7 Nov 2020 19:07:02 +0100
Subject: [PATCH] battery widget fails elegantly now

---
 .local/bin/statusbar/battery | 11 ++++++-----
 1 file changed, 6 insertions(+), 5 deletions(-)

diff --git a/.local/bin/statusbar/battery b/.local/bin/statusbar/battery
index 97868bb..cc01f20 100755
--- a/.local/bin/statusbar/battery
+++ b/.local/bin/statusbar/battery
@@ -6,7 +6,7 @@
 case $BLOCK_BUTTON in
     3) notify-send "🔋 Battery module" "🔋: discharging
 🛑: not charging
-♻: stagnant charge
+🔄;: stagnant charge
 🔌: charging
 ⚡: charged
 ❗: battery very low!" ;;
@@ -16,12 +16,13 @@ esac
 for battery in /sys/class/power_supply/BAT?
 do
 	# Get its remaining capacity and charge status.
-	capacity=$(cat "$battery"/capacity) || break
-	status=$(sed "s/Discharging/🔋/;s/Not charging/🛑/;s/Charging/🔌/;s/Unknown/♻️/;s/Full/⚡/" "$battery"/status)
+	capacity=$(cat "$battery"/capacity 2>/dev/null)
+	status=$(sed "s/Discharging/🔋/;s/Not charging/🛑/;s/Charging/🔌/;s/Unknown/🔋/;s/Full/⚡/" "$battery"/status)
 
 	# If it is discharging and 25% or less, we will add a ❗ as a warning.
 	 [ "$capacity" -le 25 ] && [ "$status" = "🔋" ] && warn="❗"
-
-	printf "%s%s%s%% " "$status" "$warn" "$capacity"
+	[ "$capacity" -gt 100 ] && exit #do not print misreads
+	[ -z "$capacity" ] && exit	#if battery fails during reading, quit
+	printf "%s%s%s%%\n" "$status" "$warn" "$capacity"
 	unset warn
 done | sed 's/ *$//'