Build: Only prompt clean if unclean (#14352)

bin/build-plugin-zip.sh

@@ -47,18 +47,21 @@ fi
 # Do a dry run of the repository reset. Prompting the user for a list of all
 # files that will be removed should prevent them from losing important files!
 status "Resetting the repository to pristine condition. ✨"
-git clean -xdf --dry-run
-warning "🚨 About to delete everything above! Is this okay? 🚨"
-echo -n "[y]es/[N]o: "
-read answer
-if [ "$answer" != "${answer#[Yy]}" ]; then
-	# Remove ignored files to reset repository to pristine condition. Previous
-	# test ensures that changed files abort the plugin build.
-	status "Cleaning working directory... 🛀"
-	git clean -xdf
-else
-	error "Fair enough; aborting. Tidy up your repo and try again. 🙂"
-	exit 1
+to_clean=$(git clean -xdf --dry-run)
+if [ ! -z "$to_clean" ]; then
+	echo $to_clean
+	warning "🚨 About to delete everything above! Is this okay? 🚨"
+	echo -n "[y]es/[N]o: "
+	read answer
+	if [ "$answer" != "${answer#[Yy]}" ]; then
+		# Remove ignored files to reset repository to pristine condition. Previous
+		# test ensures that changed files abort the plugin build.
+		status "Cleaning working directory... 🛀"
+		git clean -xdf
+	else
+		error "Fair enough; aborting. Tidy up your repo and try again. 🙂"
+		exit 1
+	fi
 fi
 
 # Download all vendor scripts