WIP of semi-automated glyph visual testing

* allow a quick visual inspection of powerlines and glyphs

bin/scripts/tests.sh

@@ -0,0 +1,18 @@
+#!/bin/bash
+
+clear
+echo "Click to start"
+
+# Window geometry
+# source: https://www.maketecheasier.com/record-screen-as-animated-gif-ubuntu/
+XWININFO=$(xwininfo)
+read X < <(awk -F: '/Absolute upper-left X/{print $2}' <<< "$XWININFO")
+read Y < <(awk -F: '/Absolute upper-left Y/{print $2}' <<< "$XWININFO")
+read W < <(awk -F: '/Width/{print $2}' <<< "$XWININFO")
+read H < <(awk -F: '/Height/{print $2}' <<< "$XWININFO")
+
+byzanz-record -c --exec=./test-fonts.sh --x=$X --y=$Y --width=$W --height=$H "rec3.gif"
+
+convert -coalesce "rec3.gif" "results/nerd-fonts.png"
+convert -append $(ls -v results/*.png) ./test-combined.png
+