Add auto-update

update_version.sh

@@ -0,0 +1,43 @@
+#!/bin/bash
+set -euxo pipefail
+
+# Read pkg name
+PKG=$(awk -F '=' '/pkgname=/{ print $2 }' PKGBUILD)
+
+# Get latest version
+VER=$(
+	curl -fsS \
+		-o /dev/null \
+		-w '%{redirect_url}' \
+		'https://discord.com/api/download?platform=linux&format=tar.gz' |
+		grep -o '[0-9]*\.[0-9]*\.[0-9]*' |
+		head -n1
+)
+
+[[ -n $VER ]]
+
+# Insert latest version into PKGBUILD
+sed -i \
+	-e "s/^pkgver=.*/pkgver=${VER}/" \
+	PKGBUILD
+
+# Check whether this changed anything
+if (git diff --exit-code PKGBUILD); then
+	echo "Package ${PKG} has most recent version ${VER}"
+	exit 0
+fi
+
+# Reset pkgrel
+sed -i \
+	-e 's/pkgrel=.*/pkgrel=1/' \
+	PKGBUILD
+
+# Update source hashes
+updpkgsums
+
+# Update .SRCINFO
+makepkg --printsrcinfo >.SRCINFO
+
+# Commit changes
+git add PKGBUILD .SRCINFO
+git commit -m "${PKG} v${VER}"