DISCOVERY', NamespacedSimplePie::LOCATOR_AUTODISCOVERY);

/**
 * Local Feed Extension Autodiscovery
 * @see SimplePie::set_autodiscovery_level()
 * @deprecated since SimplePie 1.7.0, use \SimplePie\SimplePie::LOCATOR_LOCAL_EXTENSION instead.
 */
define('SIMPLEPIE_LOCATOR_LOCAL_EXTENSION', NamespacedSimplePie::LOCATOR_LOCAL_EXTENSION);

/**
 * Local Feed Body Autodiscovery
 * @see SimplePie::set_autodiscovery_level()
 * @deprecated since SimplePie 1.7.0, use \SimplePie\SimplePie::LOCATOR_LOCAL_BODY instead.
 */
define('SIMPLEPIE_LOCATOR_LOCAL_BODY', NamespacedSimplePie::LOCATOR_LOCAL_BODY);

/**
 * Remote Feed Extension Autodiscovery
 * @see SimplePie::set_autodiscovery_level()
 * @deprecated since SimplePie 1.7.0, use \SimplePie\SimplePie::LOCATOR_REMOTE_EXTENSION instead.
 */
define('SIMPLEPIE_LOCATOR_REMOTE_EXTENSION', NamespacedSimplePie::LOCATOR_REMOTE_EXTENSION);

/**
 * Remote Feed Body Autodiscovery
 * @see SimplePie::set_autodiscovery_level()
 * @deprecated since SimplePie 1.7.0, use \SimplePie\SimplePie::LOCATOR_REMOTE_BODY instead.
 */
define('SIMPLEPIE_LOCATOR_REMOTE_BODY', NamespacedSimplePie::LOCATOR_REMOTE_BODY);

/**
 * All Feed Autodiscovery
 * @see SimplePie::set_autodiscovery_level()
 * @deprecated since SimplePie 1.7.0, use \SimplePie\SimplePie::LOCATOR_ALL instead.
 */
define('SIMPLEPIE_LOCATOR_ALL', NamespacedSimplePie::LOCATOR_ALL);

/**
 * No known feed type
 * @deprecated since SimplePie 1.7.0, use \SimplePie\SimplePie::TYPE_NONE instead.
 */
define('SIMPLEPIE_TYPE_NONE', NamespacedSimplePie::TYPE_NONE);

/**
 * RSS 0.90
 * @deprecated since SimplePie 1.7.0, use \SimplePie\SimplePie::TYPE_RSS_090 instead.
 */
define('SIMPLEPIE_TYPE_RSS_090', NamespacedSimplePie::TYPE_RSS_090);

/**
 * RSS 0.91 (Netscape)
 * @deprecated since SimplePie 1.7.0, use \SimplePie\SimplePie::TYPE_RSS_091_NETSCAPE instead.
 */
define('SIMPLEPIE_TYPE_RSS_091_NETSCAPE', NamespacedSimplePie::TYPE_RSS_091_NETSCAPE);

/**
 * RSS 0.91 (Userland)
 * @deprecated since SimplePie 1.7.0, use \SimplePie\SimplePie::TYPE_RSS_091_USERLAND instead.
 */
define('SIMPLEPIE_TYPE_RSS_091_USERLAND', NamespacedSimplePie::TYPE_RSS_091_USERLAND);

/**
 * RSS 0.91 (both Netscape and Userland)
 * @deprecated since SimplePie 1.7.0, use \SimplePie\SimplePie::TYPE_RSS_091 instead.
 */
define('SIMPLEPIE_TYPE_RSS_091', NamespacedSimplePie::TYPE_RSS_091);

/**
 * RSS 0.92
 * @deprecated since SimplePie 1.7.0, use \SimplePie\SimplePie::TYPE_RSS_092 instead.
 */
define('SIMPLEPIE_TYPE_RSS_092', NamespacedSimplePie::TYPE_RSS_092);

/**
 * RSS 0.93
 * @deprecated since SimplePie 1.7.0, use \SimplePie\SimplePie::TYPE_RSS_093 instead.
 */
define('SIMPLEPIE_TYPE_RSS_093', NamespacedSimplePie::TYPE_RSS_093);

/**
 * RSS 0.94
 * @deprecated since SimplePie 1.7.0, use \SimplePie\SimplePie::TYPE_RSS_094 instead.
 */
define('SIMPLEPIE_TYPE_RSS_094', NamespacedSimplePie::TYPE_RSS_094);

/**
 * RSS 1.0
 * @deprecated since SimplePie 1.7.0, use \SimplePie\SimplePie::TYPE_RSS_10 instead.
 */
define('SIMPLEPIE_TYPE_RSS_10', NamespacedSimplePie::TYPE_RSS_10);

/**
 * RSS 2.0
 * @deprecated since SimplePie 1.7.0, use \SimplePie\SimplePie::TYPE_RSS_20 instead.
 */
define('SIMPLEPIE_TYPE_RSS_20', NamespacedSimplePie::TYPE_RSS_20);

/**
 * RDF-based RSS
 * @deprecated since SimplePie 1.7.0, use \SimplePie\SimplePie::TYPE_RSS_RDF instead.
 */
define('SIMPLEPIE_TYPE_RSS_RDF', NamespacedSimplePie::TYPE_RSS_RDF);

/**
 * Non-RDF-based RSS (truly intended as syndication format)
 * @deprecated since SimplePie 1.7.0, use \SimplePie\SimplePie::TYPE_RSS_SYNDICATION instead.
 */
define('SIMPLEPIE_TYPE_RSS_SYNDICATION', NamespacedSimplePie::TYPE_RSS_SYNDICATION);

/**
 * All RSS
 * @deprecated since SimplePie 1.7.0, use \SimplePie\SimplePie::TYPE_RSS_ALL instead.
 */
define('SIMPLEPIE_TYPE_RSS_ALL', NamespacedSimplePie::TYPE_RSS_ALL);

/**
 * Atom 0.3
 * @deprecated since SimplePie 1.7.0, use \SimplePie\SimplePie::TYPE_ATOM_03 instead.
 */
define('SIMPLEPIE_TYPE_ATOM_03', NamespacedSimplePie::TYPE_ATOM_03);

/**
 * Atom 1.0
 * @deprecated since SimplePie 1.7.0, use \SimplePie\SimplePie::
				)
			)
		);
	}

	return $font_sizes;
}

/**
 * Returns the top-level submenu SVG chevron icon.
 *
 * @since 5.9.0
 *
 * @return string
 */
function block_core_navigation_link_render_submenu_icon() {
	return '<svg xmlns="http://www.w3.org/2000/svg" width="12" height="12" viewBox="0 0 12 12" fill="none" aria-hidden="true" focusable="false"><path d="M1.50002 4L6.00002 8L10.5 4" stroke-width="1.5"></path></svg>';
}

/**
 * Decodes a url if it's encoded, returning the same url if not.
 *
 * @since 6.2.0
 *
 * @param string $url The url to decode.
 *
 * @return string $url Returns the decoded url.
 */
function block_core_navigation_link_maybe_urldecode( $url ) {
	$is_url_encoded = false;
	$query          = parse_url( $url, PHP_URL_QUERY );
	$query_params   = wp_parse_args( $query );

	foreach ( $query_params as $query_param ) {
		$can_query_param_be_encoded = is_string( $query_param ) && ! empty( $query_param );
		if ( ! $can_query_param_be_encoded ) {
			continue;
		}
		if ( rawurldecode( $query_param ) !== $query_param ) {
			$is_url_encoded = true;
			break;
		}
	}

	if ( $is_url_encoded ) {
		return rawurldecode( $url );
	}

	return $url;
}


/**
 * Renders the `core/navigation-link` block.
 *
 * @since 5.9.0
 *
 * @param array    $attributes The block attributes.
 * @param string   $content    The saved content.
 * @param WP_Block $block      The parsed block.
 *
 * @return string Returns the post content with the legacy widget added.
 */
function render_block_core_navigation_link( $attributes, $content, $block ) {
	$navigation_link_has_id = isset( $attributes['id'] ) && is_numeric( $attributes['id'] );
	$is_post_type           = isset( $attributes['kind'] ) && 'post-type' === $attributes['kind'];
	$is_post_type           = $is_post_type || isset( $attributes['type'] ) && ( 'post' === $attributes['type'] || 'page' === $attributes['type'] );

	// Don't render the block's subtree if it is a draft or if the ID does not exist.
	if ( $is_post_type && $navigation_link_has_id ) {
		$post = get_post( $attributes['id'] );
		if ( ! $post || 'publish' !== $post->post_status ) {
			return '';
		}
	}

	// Don't render the block's subtree if it has no label.
	if ( empty( $attributes['label'] ) ) {
		return '';
	}

	$font_sizes      = block_core_navigation_link_build_css_font_sizes( $block->context );
	$classes         = array_merge(
		$font_sizes['css_classes']
	);
	$style_attribute = $font_sizes['inline_styles'];

	$css_classes = trim( implode( ' ', $classes ) );
	$has_submenu = count( $block->inner_blocks ) > 0;
	$kind        = empty( $attributes['kind'] ) ? 'post_type' : str_replace( '-', '_', $attributes['kind'] );
	$is_active   = ! empty( $attributes['id'] ) && get_queried_object_id() === (int) $attributes['id'] && ! empty( get_queried_object()->$kind );

	if ( is_post_type_archive() ) {
		$queried_archive_link = get_post_type_archive_link( get_queried_object()->name );
		if ( $attributes['url'] === $queried_archive_link ) {
			$is_active = true;
		}
	}

	$wrapper_attributes = get_block_wrapper_attributes(
		array(
			'class' => $css_classes . ' wp-block-navigation-item' . ( $has_submenu ? ' has-child' : '' ) .
				( $is_active ? ' current-menu-item' : '' ),
			'style' => $style_attribute,
		)
	);
	$html               = '<li ' . $wrapper_attributes . '>' .
		'<a class="wp-block-navigation-item__content" ';

	// Start appending HTML attributes to anchor tag.
	if ( isset( $attributes['url'] ) ) {
		$html .= ' href="' . esc_url( block_core_navigation_link_maybe_urldecode( $attributes['url'] ) ) . '"';
	}

	if ( $is_active ) {
		$html .= ' aria-current="page"';
	}

	if ( isset( $attributes['opensInNewTab'] ) && true === $attributes['opensInNewTab'] ) {
		$html .= ' target="_blank"  ';
	}

	if ( isset( $attributes['rel'] ) ) {
		$html .= ' rel="' . esc_attr( $attributes['rel'] ) . '"';
	} elseif ( isset( $attributes['nofollow'] ) && $attributes['nofollow'] ) {
		$html .= ' rel="nofollow"';
	}

	if ( isset( $attributes['title'] ) ) {
		$html .= ' title="' . esc_attr( $attributes['title'] ) . '"';
	}

	// End appending HTML attributes to anchor tag.

	// Start anchor tag content.
	$html .= '>' .
		// Wrap title with span to isolate it from submenu icon.
		'<span class="wp-block-navigation-item__label">';

	if ( isset( $attributes['label'] ) ) {
		$html .= wp_kses_post( $attributes['label'] );
	}

	$html .= '</span>';

	// Add description if available.
	if ( ! empty( $attributes['description'] ) ) {
		$html .= '<span class="wp-block-navigation-item__description">';
		$html .= wp_kses_post( $attributes['description'] );
		$html .= '</span>';
	}

	$html .= '</a>';
	// End anchor tag content.

	if ( isset( $block->context['showSubmenuIcon'] ) && $block->context['showSubmenuIcon'] && $has_submenu ) {
		// The submenu icon can be hidden by a CSS rule on the Navigation Block.
		$html .= '<span class="wp-block-navigation__submenu-icon">' . block_core_navigation_link_render_submenu_icon() . '</span>';
	}

	if ( $has_submenu ) {
		$inner_blocks_html = '';
		foreach ( $block->inner_blocks as $inner_block ) {
			$inner_blocks_html .= $inner_block->render();
		}

		$html .= sprintf(
			'<ul class="wp-block-navigation__submenu-container">%s</ul>',
			$inner_blocks_html
		);
	}

	$html .= '</li>';

	return $html;
}

/**
 * Returns a navigation link variation
 *
 * @since 5.9.0
 *
 * @param WP_Taxonomy|WP_Post_Type $entity post type or taxonomy entity.
 * @param string                   $kind string of value 'taxonomy' or 'post-type'.
 *
 * @return array
 */
function build_variation_for_navigation_link( $entity, $kind ) {
	$title       = '';
	$description = '';

	if ( property_exists( $entity->labels, 'item_link' ) ) {
		$title = $entity->labels->item_link;
	}
	if ( property_exists( $entity->labels, 'item_link_description' ) ) {
		$description = $entity->labels->item_link_description;
	}

	$variation = array(
		'name'        => $entity->name,
		'title'       => $title,
		'description' => $description,
		'attributes'  => array(
			'type' => $entity->name,
			'kind' => $kind,
		),
	);

	// Tweak some value for the variations.
	$variation_overrides = array(
		'post_tag'    => array(
			'name'       => 'tag',
			'attributes' => array(
				'type' => 'tag',
				'kind' => $kind,
			),
		),
		'post_format' => array(
			// The item_link and item_link_description for post formats is the
			// same as for tags, so need to be overridden.
			'title'       => __( 'Post Format Link' ),
			'description' => __( 'A link to a post format' ),
			'attributes'  => array(
				'type' => 'post_format',
				'kind' => $kind,
			),
		),
	);

	if ( array_key_exists( $entity->name, $variation_overrides ) ) {
		$variation = array_merge(
			$variation,
			$variation_overrides[ $entity->name ]
		);
	}

	return $variation;
}

/**
 * Filters the registered variations for a block type.
 * Returns the dynamically built variations for all post-types and taxonomies.
 *
 * @since 6.5.0
 *
 * @param array         $variations Array of registered variations for a block type.
 * @param WP_Block_Type $block_type The full block type object.
 */
function block_core_navigation_link_filter_variations( $variations, $block_type ) {
	if ( 'core/navigation-link' !== $block_type->name ) {
		return $variations;
	}

	$generated_variations = block_core_navigation_link_build_variations();
	return array_merge( $variations, $generated_variations );
}

/**
 * Returns an array of variations for the navigation link block.
 *
 * @since 6.5.0
 *
 * @return array
 */
function block_core_navigation_link_build_variations() {
	$post_types = get_post_types( array( 'show_in_nav_menus' => true ), 'objects' );
	$taxonomies = get_taxonomies( array( 'show_in_nav_menus' => true ), 'objects' );

	/*
	 * Use two separate arrays as a way to order the variations in the UI.
	 * Known variations (like Post Link and Page Link) are added to the
	 * `built_ins` array. Variations for custom post types and taxonomies are
	 * added to the `variations` array and will always appear after `built-ins.
	 */
	$built_ins  = array();
	$variations = array();

	if ( $post_types ) {
		foreach ( $post_types as $post_type ) {
			$variation = build_variation_for_navigation_link( $post_type, 'post-type' );
			if ( $post_type->_builtin ) {
				$built_ins[] = $variation;
			} else {
				$variations[] = $variation;
			}
		}
	}
	if ( $taxonomies ) {
		foreach ( $taxonomies as $taxonomy ) {
			$variation = build_variation_for_navigation_link( $taxonomy, 'taxonomy' );
			if ( $taxonomy->_builtin ) {
				$built_ins[] = $variation;
			} else {
				$variations[] = $variation;
			}
		}
	}

	return array_merge( $built_ins, $variations );
}

/**
 * Registers the navigation link block.
 *
 * @since 5.9.0
 *
 * @uses render_block_core_navigation_link()
 * @throws WP_Error An WP_Error exception parsing the block definition.
 */
function register_block_core_navigation_link() {
	register_block_type_from_metadata(
		__DIR__ . '/navigation-link',
		array(
			'render_callback' => 'render_block_core_navigation_link',
		)
	);
}
add_action( 'init', 'register_block_core_navigation_link' );
/**
 * Creates all variations for post types / taxonomies dynamically (= each time when variations are requested).
 * Do not use variation_callback, to also account for unregistering post types/taxonomies later on.
 */
add_action( 'get_block_type_variations', 'block_core_navigation_link_filter_variations', 10, 2 );
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<channel>
	<title>Les Femmes, Inc</title>
	<atom:link href="http://lesfemmespdx.org/?feed=rss2" rel="self" type="application/rss+xml" />
	<link>http://lesfemmespdx.org</link>
	<description>Celebrating 70 years of serving and supporting Portland&#039;s Black Youth</description>
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		<title>Hello world!</title>
		<link>http://lesfemmespdx.org/?p=1</link>
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		<dc:creator><![CDATA[admin]]></dc:creator>
		<pubDate>Tue, 10 May 2016 03:48:21 +0000</pubDate>
				<category><![CDATA[Uncategorized]]></category>
		<guid isPermaLink="false">http://lesfemmespdx.org/?p=1</guid>

					<description><![CDATA[Welcome to WordPress. This is your first post. Edit or delete it, then start writing!]]></description>
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