Index: src/wp-includes/link-template.php
===================================================================
--- src/wp-includes/link-template.php	(revision 30447)
+++ src/wp-includes/link-template.php	(working copy)
@@ -2192,17 +2192,17 @@
  * @param array $args {
  *     Optional. Default post navigation arguments.
  *
- *     @type string $prev_text Anchor text to display in the previous post link.
- *                             Default: `<span class="meta-nav">&larr;</span> %title`.
- *     @type string $next_text Anchor text to display in the next post link.
- *                             Default: `%title <span class="meta-nav">&rarr;</span>`.
+ *     @type string $prev_text          Anchor text to display in the previous post link. Default: `%title`.
+ *     @type string $next_text          Anchor text to display in the next post link. Default: `%title`.
+ *     @type string $screen_reader_text Screen reader text for nav element. Default: 'Post navigation'.
  * }
  * @return string Markup for post links.
  */
 function get_the_post_navigation( $args = array() ) {
 	$args = wp_parse_args( $args, array(
-		'prev_text' => _x( '<span class="meta-nav">&larr;</span> %title', 'Previous post link' ),
-		'next_text' => _x( '%title <span class="meta-nav">&rarr;</span>', 'Next post link' ),
+		'prev_text'          => '%title',
+		'next_text'          => '%title',
+		'screen_reader_text' => __( 'Post navigation' ),
 	) );
 
 	$navigation = '';
@@ -2210,8 +2210,8 @@
 	$next       = get_next_post_link( '<div class="nav-next">%link</div>', $args['next_text'] );
 
 	// Only add markup if there's somewhere to navigate to.
-	if ( $next || $previous ) {
-		$navigation = _navigation_markup( $next . $previous, 'post-navigation', __( 'Post navigation' ) );
+	if ( $previous || $next ) {
+		$navigation = _navigation_markup( $previous . $next, 'post-navigation', $args['screen_reader_text'] );
 	}
 
 	return $navigation;
@@ -2238,10 +2238,9 @@
  * @param array $args {
  *     Optional. Default paging navigation arguments.
  *
- *     @type string $prev_text Anchor text to display in the previous posts link.
- *                             Default: `<span class="meta-nav">&larr;</span> Older posts`.
- *     @type string $next_text Anchor text to display in the next posts link.
- *                             Default: `Newer posts <span class="meta-nav">&rarr;</span>`.
+ *     @type string $prev_text          Anchor text to display in the previous posts link. Default: `Older posts`.
+ *     @type string $next_text          Anchor text to display in the next posts link. Default: `Newer posts`.
+ *     @type string $screen_reader_text Screen reader text for nav element. Default: 'Posts navigation'.
  * }
  * @return string Markup for paging links.
  */
@@ -2251,22 +2250,23 @@
 	// Don't print empty markup if there's only one page.
 	if ( $GLOBALS['wp_query']->max_num_pages > 1 ) {
 		$args = wp_parse_args( $args, array(
-			'prev_text' => __( '<span class="meta-nav">&larr;</span> Older posts' ),
-			'next_text' => __( 'Newer posts <span class="meta-nav">&rarr;</span>' ),
+			'prev_text'          => __( 'Older posts' ),
+			'next_text'          => __( 'Newer posts' ),
+			'screen_reader_text' => __( 'Posts navigation' ),
 		) );
 
-		$next_link = get_next_posts_link( $args['prev_text'] );
-		$prev_link = get_previous_posts_link( $args['next_text'] );
+		$next_link = get_previous_posts_link( $args['next_text'] );
+		$prev_link = get_next_posts_link( $args['prev_text'] );
 
-		if ( $next_link ) {
-			$navigation .= '<div class="nav-previous">' . $next_link . '</div>';
+		if ( $prev_link ) {
+			$navigation .= '<div class="nav-previous">' . $prev_link . '</div>';
 		}
 
-		if ( $prev_link ) {
-			$navigation .= '<div class="nav-next">' . $prev_link . '</div>';
+		if ( $next_link ) {
+			$navigation .= '<div class="nav-next">' . $next_link . '</div>';
 		}
 
-		$navigation = _navigation_markup( $navigation );
+		$navigation = _navigation_markup( $navigation, 'paging-navigation', $args['screen_reader_text'] );
 	}
 
 	return $navigation;
@@ -2290,30 +2290,9 @@
  * @since 4.1.0
  *
  * @param array $args {
- *     Optional. Default pagination arguments.
+ *     Optional. Default pagination arguments. {@see paginate_links()}
  *
- *     @type string $base               URL to be used to create the paginated links.
- *                                      Example: `http://example.com/all_posts.php%_%`
- *                                      The `%_%` is required and will be replaced by the contents of the
- *                                      'format' argument.
- *                                      Default: Current page number link with appended `%_%`.
- *     @type string $format             Used to replace the page number. Example: `?page=%#%`
- *                                      The `%#%` is required and will be replaced with the page number.
- *                                      Default: Current permalink format with appended `%#%`.
- *     @type int    $total              The total amount of pages. Default: Value of 'max_num_pages' of current query.
- *     @type int    $current            The current page number. Default: Value of 'paged' query var.
- *     @type bool   $prev_next          Whether to include previous and next links. Default: true.
- *     @type string $prev_text          Anchor text to display in the previous posts link. Default: `&larr; Previous`.
- *     @type string $next_text          Anchor text to display in the next posts link. Default: `Next &rarr;`.
- *     @type bool   $show_all           Whether to show all pages.
- *                                      Default: false, shows short list of the pages near the current page.
- *     @type int    $end_size           Amount of numbers on either the start and the end list edges. Default: 1.
- *     @type int    $mid_size           Amount of numbers to either side of current page but not including current page.
- *                                      Default: 1.
- *     @type array  $add_args           Query vars to be added to the links. Accepts an associative array of arguments.
- *                                      Default: Empty array.
- *     @type string $before_page_number Text to prepend to the anchor text. Default: Empty string.
- *     @type string $after_page_number  Text to append to the anchor text. Default: Empty string.
+ *     @type string $screen_reader_text Screen reader text for nav element. Default: 'Posts navigation'.
  * }
  * @return string Markup for pagination links.
  */
@@ -2323,9 +2302,10 @@
 	// Don't print empty markup if there's only one page.
 	if ( $GLOBALS['wp_query']->max_num_pages > 1 ) {
 		$args = wp_parse_args( $args, array(
-			'mid_size'  => 1,
-			'prev_text' => __( '&larr; Previous' ),
-			'next_text' => __( 'Next &rarr;' ),
+			'mid_size'           => 1,
+			'prev_text'          => __( 'Previous' ),
+			'next_text'          => __( 'Next' ),
+			'screen_reader_text' => __( 'Posts navigation' ),
 		) );
 		// Make sure we get plain links, so we can work with it.
 		$args['type'] = 'plain';
@@ -2335,7 +2315,7 @@
 
 		// `navigation_markup()` expects a string, `paginate_links()` can return an array.
 		if ( $links && ! is_array( $links ) ) {
-			$navigation = _navigation_markup( $links, 'pagination' );
+			$navigation = _navigation_markup( $links, 'pagination', $args['screen_reader_text'] );
 		}
 	}
 
@@ -2372,7 +2352,7 @@
 
 	$template = '
 	<nav class="navigation %1$s" role="navigation">
-		<h1 class="screen-reader-text">%2$s</h1>
+		<h2 class="screen-reader-text">%2$s</h2>
 		<div class="nav-links">%3$s</div>
 	</nav>';
 
