From 8de56be5647cbc1464f264d14519aca6d87b7e76 Mon Sep 17 00:00:00 2001
From: Chris Huber <chubes@extrachill.com>
Date: Tue, 28 Jul 2026 21:54:39 -0400
Subject: [PATCH] fix: boot with Studio PDO driver name

---
 inc/class-wp-markdown-driver.php            |  6 ++++++
 tests/smoke-studio-pdo-driver-bootstrap.php | 24 +++++++++++++++++++++
 2 files changed, 30 insertions(+)
 create mode 100644 tests/smoke-studio-pdo-driver-bootstrap.php

diff --git a/inc/class-wp-markdown-driver.php b/inc/class-wp-markdown-driver.php
index 1710a1e..a87b7d5 100644
--- a/inc/class-wp-markdown-driver.php
+++ b/inc/class-wp-markdown-driver.php
@@ -22,6 +22,12 @@
 	exit;
 }
 
+// Studio's SQLite Integration 3.0.0-rc.6 exposes the canonical PDO driver
+// under its pre-rename class name.
+if ( ! class_exists( 'WP_MySQL_On_SQLite' ) && class_exists( 'WP_PDO_MySQL_On_SQLite' ) ) {
+	class_alias( 'WP_PDO_MySQL_On_SQLite', 'WP_MySQL_On_SQLite' );
+}
+
 class WP_Markdown_Driver extends WP_MySQL_On_SQLite {
 
 	/**
diff --git a/tests/smoke-studio-pdo-driver-bootstrap.php b/tests/smoke-studio-pdo-driver-bootstrap.php
new file mode 100644
index 0000000..a9964fe
--- /dev/null
+++ b/tests/smoke-studio-pdo-driver-bootstrap.php
@@ -0,0 +1,24 @@
+<?php
+/**
+ * Verify Studio's pre-rename canonical PDO driver can boot MDI.
+ *
+ * Usage: php tests/smoke-studio-pdo-driver-bootstrap.php
+ */
+
+define( 'ABSPATH', __DIR__ . '/' );
+
+class WP_PDO_MySQL_On_SQLite {}
+
+require_once dirname( __DIR__ ) . '/inc/class-wp-markdown-driver.php';
+
+if ( ! class_exists( 'WP_MySQL_On_SQLite', false ) ) {
+	fwrite( STDERR, "FAIL: Studio PDO driver alias was not registered.\n" );
+	exit( 1 );
+}
+
+if ( ! is_subclass_of( 'WP_Markdown_Driver', 'WP_PDO_MySQL_On_SQLite' ) ) {
+	fwrite( STDERR, "FAIL: Markdown driver does not extend Studio's PDO driver.\n" );
+	exit( 1 );
+}
+
+echo "PASS: Studio PDO driver bootstrap compatibility verified.\n";