Use case to force allow_empty_commits to be either true or false

Author: ouuan

build.sh

@@ -50,10 +50,10 @@ echo '::endgroup::'
 echo '::group::Publishing'
 git remote add aur "ssh://aur@aur.archlinux.org/${pkgname}.git"
 git add -fv PKGBUILD .SRCINFO
-if [[ $allow_empty_commits == 'true' ]]; then
-    git commit --allow-empty -m "$commit_message"
-else
-    git diff-index --quiet HEAD || git commit -m "$commit_message" # use `git diff-index --quiet HEAD ||` to avoid error
-fi
+case "$allow_empty_commits" in
+    true) git commit --allow-empty -m "$commit_message";;
+    false) git diff-index --quiet HEAD || git commit -m "$commit_message";; # use `git diff-index --quiet HEAD ||` to avoid error
+    *) echo 'The option "allow_empty_commits" should be either "true" or "false".' && false;;
+esac
 git push --force-with-lease -v aur master
 echo '::endgroup::'