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tmux/powerline/segments/xkb_layout.sh

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+# Print the currently used keyboard layout
+# This depends on a specifically developed program which prints the group id of
+# the currently used layout.
+# I developed the simple program myself with some guidance as I was unable to
+# find anything already developed.
+# Some people might suggest:
+# $ setxkbmod -query -v | awk -F "+" '{print $2}'
+# this will only work if you have set up XKB with a single layout which is true
+# for some.
+
+# This script will print the correct layout even if layout is set per window.
+# Exit if platform is not linux as this script is dependant on X11
+
+run_segment() {
+	if ! shell_is_linux; then
+		return 1
+	fi
+
+	cd "$TMUX_POWERLINE_DIR_SEGMENTS"
+	if [ ! -x "xkb_layout" ]; then
+		make clean xkb_layout &>/dev/null
+	fi
+
+	if [ -x ./xkb_layout ]; then
+		cur_layout_nbr=$(($(./xkb_layout)+1));
+		cur_layout=$(setxkbmap -query | grep layout | sed 's/layout:\s\+//g' | \
+			awk -F ',' '{print $'$(echo "$cur_layout_nbr")'}')
+		echo "⌨  $cur_layout"
+	else
+		return 1
+	fi
+}