From b72be00111b2b914c3ff41b0764c9a339aa4c777 Mon Sep 17 00:00:00 2001
From: Peter Wilson <wilson@peterwilson.cc>
Date: Wed, 28 Jun 2023 05:57:28 +0000
Subject: [PATCH] Script Loader: Prevent fatal error in `load-styles.php`.

Duplicates the code of `get_theme_file_path()` within `wp_theme_has_theme_json()`. This is to account for the `load-styles.php` context in which the former function is unavailable.

Follow up to [56073].

Props SergeyBiryukov, oglekler, spacedmonkey, joemcgill, dd32.
Fixes #57629.


Built from https://develop.svn.wordpress.org/trunk@56085


git-svn-id: http://core.svn.wordpress.org/trunk@55597 1a063a9b-81f0-0310-95a4-ce76da25c4cd
---
 wp-includes/global-styles-and-settings.php | 17 +++++++++++++++--
 wp-includes/version.php                    |  2 +-
 2 files changed, 16 insertions(+), 3 deletions(-)

diff --git a/wp-includes/global-styles-and-settings.php b/wp-includes/global-styles-and-settings.php
index 7a8446d60e..d43bf347fa 100644
--- a/wp-includes/global-styles-and-settings.php
+++ b/wp-includes/global-styles-and-settings.php
@@ -407,8 +407,21 @@ function wp_theme_has_theme_json() {
 		return $theme_has_support;
 	}
 
-	// Does the theme have its own theme.json?
-	$theme_has_support = is_readable( get_theme_file_path( 'theme.json' ) );
+	// This is the same as get_theme_file_path(), which isn't available in load-styles.php context
+	if ( file_exists( get_stylesheet_directory() . '/theme.json' ) ) {
+		$path = get_stylesheet_directory() . '/theme.json';
+	} else {
+		$path = get_template_directory() . '/theme.json';
+	}
+
+	/** This filter is documented in wp-includes/link-template.php */
+	$path = apply_filters( 'theme_file_path', $path, 'theme.json' );
+
+	if ( file_exists( $path ) ) {
+		$theme_has_support = true;
+	} else {
+		$theme_has_support = false;
+	}
 
 	return $theme_has_support;
 }
diff --git a/wp-includes/version.php b/wp-includes/version.php
index b44c4ba3a5..947f812d91 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -16,7 +16,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '6.3-alpha-56084';
+$wp_version = '6.3-alpha-56085';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.