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✏️ Editing: wp-tinymce.php

<?php
/**
 * Not used in core since 5.1.
 * This is a back-compat for plugins that may be using this method of loading directly.
 */

/**
 * Disable error reporting
 *
 * Set this to error_reporting( -1 ) for debugging.
 */
error_reporting( 0 );

$basepath = __DIR__;

function get_file( $path ) {

if ( function_exists( 'realpath' ) ) {
		$path = realpath( $path );
	}

if ( ! $path || ! @is_file( $path ) ) {
		return false;
	}

return @file_get_contents( $path );
}

$expires_offset = 31536000; // 1 year.

header( 'Content-Type: application/javascript; charset=UTF-8' );
header( 'Vary: Accept-Encoding' ); // Handle proxies.
header( 'Expires: ' . gmdate( 'D, d M Y H:i:s', time() + $expires_offset ) . ' GMT' );
header( "Cache-Control: public, max-age=$expires_offset" );

$file = get_file( $basepath . '/wp-tinymce.js' );
if ( isset( $_GET['c'] ) && $file ) {
	echo $file;
} else {
	// Even further back compat.
	echo get_file( $basepath . '/tinymce.min.js' );
	echo get_file( $basepath . '/plugins/compat3x/plugin.min.js' );
}
exit;