From 8aa82304adbc905564e37ff75795a78a3ff6b4a4 Mon Sep 17 00:00:00 2001
From: George Mamadashvili <georgemamadashvili@gmail.com>
Date: Wed, 8 Dec 2021 18:03:37 +0000
Subject: [PATCH] Fix theme requirement validation with WP 5.8 (#37226)

* Fix theme requirement validation with WP 5.8

* Use compat file

* Update comment
---
 lib/compat/wordpress-5.9/theme.php | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/lib/compat/wordpress-5.9/theme.php b/lib/compat/wordpress-5.9/theme.php
index 43862e6bf6117a..7bfe11f604c5b6 100644
--- a/lib/compat/wordpress-5.9/theme.php
+++ b/lib/compat/wordpress-5.9/theme.php
@@ -16,3 +16,13 @@ function wp_is_block_theme() {
 			is_readable( get_theme_file_path( '/templates/index.html' ) );
 	}
 }
+
+/**
+ * Note: We have to maintain this function for backward compatibility with WP 5.8.
+ * The `validate_theme_requirements` method is using `gutenberg_is_fse_theme` in older versions of WP.
+ *
+ * @return boolean Whether the current theme is a block theme or not.
+ */
+function gutenberg_is_fse_theme() {
+	return wp_is_block_theme();
+}