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diff --git a/.config/fisher/github.com/matchai/spacefish/functions/__sf_section_battery.fish b/.config/fisher/github.com/matchai/spacefish/functions/__sf_section_battery.fish
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+++ b/.config/fisher/github.com/matchai/spacefish/functions/__sf_section_battery.fish
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+#
+# Battery
+#
+
+function __sf_section_battery -d "Displays battery symbol and charge"
+	# ------------------------------------------------------------------------------
+	# Configuration
+	# ------------------------------------------------------------------------------
+
+	# ------------------------------------------------------------------------------
+	# | SPACEFISH_BATTERY_SHOW | below threshold | above threshold | fully charged |
+	# |------------------------+-----------------+-----------------+---------------|
+	# | false                  | hidden          | hidden          | hidden        |
+	# | always                 | shown           | shown           | shown         |
+	# | true                   | shown           | hidden          | hidden        |
+	# | charged                | shown           | hidden          | shown         |
+	# ------------------------------------------------------------------------------
+
+	__sf_util_set_default SPACEFISH_BATTERY_SHOW true
+	__sf_util_set_default SPACEFISH_BATTERY_PREFIX ""
+	__sf_util_set_default SPACEFISH_BATTERY_SUFFIX " "
+	__sf_util_set_default SPACEFISH_BATTERY_SYMBOL_CHARGING ⇡
+	__sf_util_set_default SPACEFISH_BATTERY_SYMBOL_DISCHARGING ⇣
+	__sf_util_set_default SPACEFISH_BATTERY_SYMBOL_FULL •
+	__sf_util_set_default SPACEFISH_BATTERY_THRESHOLD 10
+
+	# ------------------------------------------------------------------------------
+	# Section
+	# ------------------------------------------------------------------------------
+
+	# Show section only if any of the following is true
+	# - SPACEFISH_BATTERY_SHOW = "always"
+	# - SPACEFISH_BATTERY_SHOW = "true" and
+	#	- battery percentage is below the given limit (default: 10%)
+	# - SPACEFISH_BATTERY_SHOW = "charged" and
+	#	- Battery is fully charged
+
+	# Check that user wants to show battery levels
+	[ $SPACEFISH_BATTERY_SHOW = false ]; and return
+
+	set -l battery_data
+	set -l battery_percent
+	set -l battery_status
+	set -l battery_color
+	set -l battery_symbol
+
+	# Darwin and macOS machines
+	if type -q pmset
+		set battery_data (pmset -g batt | grep "InternalBattery")
+
+		# Return if no internal battery
+		if test -z (echo $battery_data)
+			return
+		end
+
+		set battery_percent (echo $battery_data | grep -oE "[0-9]{1,3}%")
+		# spaceship has echo $battery_data | awk -F '; *' 'NR==2 { print $2 }', but NR==2 did not return anything.
+		set battery_status (echo $battery_data | awk -F '; *' '{ print $2 }')
+
+	# Linux machines
+	else if type -q upower
+		set -l battery (upower -e | grep battery | head -1)
+
+		[ -z $battery ]; and return
+
+		set -l IFS # Clear IFS to allow for multi-line variables
+		set battery_data (upower -i $battery)
+		set battery_percent (echo $battery_data | grep percentage | awk '{print $2}')
+		set battery_status (echo $battery_data | grep state | awk '{print $2}')
+
+	# Windows machines.
+	else if type -q acpi
+		set -l battery_data (acpi -b 2>/dev/null | head -1)
+
+		# Return if no battery
+		[ -z $battery_data ]; and return
+
+		set battery_percent ( echo $battery_data | awk '{print $4}' )
+		set battery_status ( echo $battery_data | awk '{print tolower($3)}' )
+	else
+		return
+	end
+
+	 # Remove trailing % and symbols for comparison
+	set battery_percent (echo $battery_percent | string trim --chars=%[,;])
+
+	if test "$battery_percent" -eq 100 -o -n (echo (string match -r "(charged|full)" $battery_status))
+		set battery_color green
+	else if test "$battery_percent" -lt "$SPACEFISH_BATTERY_THRESHOLD"
+		set battery_color red
+	else
+		set battery_color yellow
+	end
+
+	# Battery indicator based on current status of battery
+	if test "$battery_status" = "charging"
+		set battery_symbol $SPACEFISH_BATTERY_SYMBOL_CHARGING
+	else if test -n (echo (string match -r "^[dD]ischarg.*" $battery_status))
+		set battery_symbol $SPACEFISH_BATTERY_SYMBOL_DISCHARGING
+	else
+		set battery_symbol $SPACEFISH_BATTERY_SYMBOL_FULL
+	end
+
+	if test "$SPACEFISH_BATTERY_SHOW" = "always" \
+	-o "$battery_percent" -lt "$SPACEFISH_BATTERY_THRESHOLD" \
+	-o "$SPACEFISH_BATTERY_SHOW" = "charged" \
+	-a -n (echo (string match -r "(charged|full)" $battery_status))
+		__sf_lib_section \
+			$battery_color \
+			$SPACEFISH_BATTERY_PREFIX \
+			"$battery_symbol$battery_percent%" \
+			$SPACEFISH_BATTERY_SUFFIX
+	end
+end