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<?php
function ___wejns_wp_whitespace_fix($input) {
	/* valid content-type? */
	$allowed = false;

	/* found content-type header? */
	$found = false;

	/* we mangle the output if (and only if) output type is text/* */
	foreach (headers_list() as $header) {
		if (preg_match("/^content-type:\\s+(text\\/|application\\/((xhtml|atom|rss)\\+xml|xml))/i", $header)) {
			$allowed = true;
		}

		if (preg_match("/^content-type:\\s+/i", $header)) {
			$found = true;
		}
	}

	/* do the actual work */
	if ($allowed || !$found) {
		return preg_replace("/\\A\\s*/m", "", $input);
	} else {
		return $input;
	}
}

/* start output buffering using custom callback */
ob_start("___wejns_wp_whitespace_fix");
/**
 * Do not edit anything in this file unless you know what you're doing
 */

/**
 * Helper function for prettying up errors
 *
 * @param string $message
 * @param string $subtitle
 * @param string $title
 */
$sage_error = function ($message, $subtitle = '', $title = '') {
    $title = $title ?: __('Sage &rsaquo; Error', 'sage');
    $footer = '<a href="https://roots.io/sage/docs/">roots.io/sage/docs/</a>';
    $message = "<h1>{$title}<br><small>{$subtitle}</small></h1><p>{$message}</p><p>{$footer}</p>";
    wp_die($message, $title);
};

/**
 * Ensure compatible version of PHP is used
 */
if (version_compare('7.1.3', phpversion(), '>')) {
    $sage_error(__('You must be using PHP 7.1.3 or greater.', 'sage'), __('Invalid PHP version', 'sage'));
}

/**
 * Ensure compatible version of WordPress is used
 */
if (version_compare('5.2', get_bloginfo('version'), '>')) {
    $sage_error(__('You must be using WordPress 5.2 or greater.', 'sage'), __('Invalid WordPress version', 'sage'));
}

/**
 * Ensure dependencies are loaded
 */
if (! file_exists($composer = __DIR__ . '/vendor/autoload.php')) {
    $sage_error(
        __('You must run <code>composer install</code> from the Sage directory.', 'sage'),
        __('Autoloader not found.', 'sage')
    );
}
require_once $composer;

/**
 * Sage required files
 *
 * The mapped array determines the code library included in your theme.
 * Add or remove files to the array as needed. Supports child theme overrides.
 */
array_map(function ($file) use ($sage_error) {
    $file = "app/{$file}.php";
    if (! locate_template($file, true, true)) {
        $sage_error(
            sprintf(__('Error locating <code>%s</code> for inclusion.', 'sage'), $file),
            __('File not found', 'sage')
        );
    }
}, ['helpers', 'setup', 'filters', 'admin']);

/**
 * Enable sage features
 * @link https://roots.io/acorn/
 */
add_theme_support('sage');
Roots\bootloader();