diff -r 346c88efed21 -r 5e2f62d02dcd wp/wp-admin/options-discussion.php
--- a/wp/wp-admin/options-discussion.php	Mon Jun 08 16:11:51 2015 +0000
+++ b/wp/wp-admin/options-discussion.php	Tue Jun 09 03:35:32 2015 +0200
@@ -14,6 +14,26 @@
 $title = __('Discussion Settings');
 $parent_file = 'options-general.php';
 
+/**
+ * Output JavaScript to toggle display of additional settings if avatars are disabled.
+ *
+ * @since 4.2.0
+ */
+function options_discussion_add_js() {
+?>
+	<script>
+	(function($){
+		var parent = $( '#show_avatars' ),
+			children = $( '.avatar-settings' );
+		parent.change(function(){
+			children.toggleClass( 'hide-if-js', ! this.checked );
+		});
+	})(jQuery);
+	</script>
+<?php
+}
+add_action( 'admin_print_footer_scripts', 'options_discussion_add_js' );
+
 get_current_screen()->add_help_tab( array(
 	'id'      => 'overview',
 	'title'   => __('Overview'),
@@ -23,22 +43,21 @@
 
 get_current_screen()->set_help_sidebar(
 	'<p><strong>' . __('For more information:') . '</strong></p>' .
-	'<p>' . __('<a href="http://codex.wordpress.org/Settings_Discussion_Screen" target="_blank">Documentation on Discussion Settings</a>') . '</p>' .
-	'<p>' . __('<a href="http://wordpress.org/support/" target="_blank">Support Forums</a>') . '</p>'
+	'<p>' . __('<a href="https://codex.wordpress.org/Settings_Discussion_Screen" target="_blank">Documentation on Discussion Settings</a>') . '</p>' .
+	'<p>' . __('<a href="https://wordpress.org/support/" target="_blank">Support Forums</a>') . '</p>'
 );
 
 include( ABSPATH . 'wp-admin/admin-header.php' );
 ?>
 
 <div class="wrap">
-<?php screen_icon(); ?>
 <h2><?php echo esc_html( $title ); ?></h2>
 
 <form method="post" action="options.php">
 <?php settings_fields('discussion'); ?>
 
 <table class="form-table">
-<tr valign="top">
+<tr>
 <th scope="row"><?php _e('Default article settings'); ?></th>
 <td><fieldset><legend class="screen-reader-text"><span><?php _e('Default article settings'); ?></span></legend>
 <label for="default_pingback_flag">
@@ -53,10 +72,10 @@
 <input name="default_comment_status" type="checkbox" id="default_comment_status" value="open" <?php checked('open', get_option('default_comment_status')); ?> />
 <?php _e('Allow people to post comments on new articles'); ?></label>
 <br />
-<small><em><?php echo '(' . __('These settings may be overridden for individual articles.') . ')'; ?></em></small>
+<p class="description"><?php echo '(' . __( 'These settings may be overridden for individual articles.' ) . ')'; ?></p>
 </fieldset></td>
 </tr>
-<tr valign="top">
+<tr>
 <th scope="row"><?php _e('Other comment settings'); ?></th>
 <td><fieldset><legend class="screen-reader-text"><span><?php _e('Other comment settings'); ?></span></legend>
 <label for="require_name_email"><input type="checkbox" name="require_name_email" id="require_name_email" value="1" <?php checked('1', get_option('require_name_email')); ?> /> <?php _e('Comment author must fill out name and e-mail'); ?></label>
@@ -81,7 +100,7 @@
  *
  * @since 2.7.0.
  *
- * @param int $10 The maximum depth of threaded comments. Default 10.
+ * @param int $max_depth The maximum depth of threaded comments. Default 10.
  */
 $maxdeep = (int) apply_filters( 'thread_comments_depth_max', 10 );
 
@@ -124,7 +143,7 @@
 ?></label>
 </fieldset></td>
 </tr>
-<tr valign="top">
+<tr>
 <th scope="row"><?php _e('E-mail me whenever'); ?></th>
 <td><fieldset><legend class="screen-reader-text"><span><?php _e('E-mail me whenever'); ?></span></legend>
 <label for="comments_notify">
@@ -136,7 +155,7 @@
 <?php _e('A comment is held for moderation'); ?> </label>
 </fieldset></td>
 </tr>
-<tr valign="top">
+<tr>
 <th scope="row"><?php _e('Before a comment appears'); ?></th>
 <td><fieldset><legend class="screen-reader-text"><span><?php _e('Before a comment appears'); ?></span></legend>
 <label for="comment_moderation">
@@ -146,7 +165,7 @@
 <label for="comment_whitelist"><input type="checkbox" name="comment_whitelist" id="comment_whitelist" value="1" <?php checked('1', get_option('comment_whitelist')); ?> /> <?php _e('Comment author must have a previously approved comment'); ?></label>
 </fieldset></td>
 </tr>
-<tr valign="top">
+<tr>
 <th scope="row"><?php _e('Comment Moderation'); ?></th>
 <td><fieldset><legend class="screen-reader-text"><span><?php _e('Comment Moderation'); ?></span></legend>
 <p><label for="comment_max_links"><?php printf(__('Hold a comment in the queue if it contains %s or more links. (A common characteristic of comment spam is a large number of hyperlinks.)'), '<input name="comment_max_links" type="number" step="1" min="0" id="comment_max_links" value="' . esc_attr(get_option('comment_max_links')) . '" class="small-text" />' ); ?></label></p>
@@ -157,7 +176,7 @@
 </p>
 </fieldset></td>
 </tr>
-<tr valign="top">
+<tr>
 <th scope="row"><?php _e('Comment Blacklist'); ?></th>
 <td><fieldset><legend class="screen-reader-text"><span><?php _e('Comment Blacklist'); ?></span></legend>
 <p><label for="blacklist_keys"><?php _e('When a comment contains any of these words in its content, name, URL, e-mail, or IP, it will be marked as spam. One word or IP per line. It will match inside words, so &#8220;press&#8221; will match &#8220;WordPress&#8221;.'); ?></label></p>
@@ -173,19 +192,23 @@
 
 <p><?php _e('An avatar is an image that follows you from weblog to weblog appearing beside your name when you comment on avatar enabled sites. Here you can enable the display of avatars for people who comment on your site.'); ?></p>
 
-<?php // the above would be a good place to link to codex documentation on the gravatar functions, for putting it in themes. anything like that? ?>
+<?php
+// the above would be a good place to link to codex documentation on the gravatar functions, for putting it in themes. anything like that?
+
+$show_avatars = get_option( 'show_avatars' );
+?>
 
 <table class="form-table">
-<tr valign="top">
+<tr>
 <th scope="row"><?php _e('Avatar Display'); ?></th>
 <td><fieldset><legend class="screen-reader-text"><span><?php _e('Avatar Display'); ?></span></legend>
 	<label for="show_avatars">
-		<input type="checkbox" id="show_avatars" name="show_avatars" value="1" <?php checked( get_option('show_avatars'), 1 ); ?> />
+		<input type="checkbox" id="show_avatars" name="show_avatars" value="1" <?php checked( $show_avatars, 1 ); ?> />
 		<?php _e( 'Show Avatars' ); ?>
 	</label>
 </fieldset></td>
 </tr>
-<tr valign="top">
+<tr class="avatar-settings<?php if ( ! $show_avatars ) echo ' hide-if-js'; ?>">
 <th scope="row"><?php _e('Maximum Rating'); ?></th>
 <td><fieldset><legend class="screen-reader-text"><span><?php _e('Maximum Rating'); ?></span></legend>
 
@@ -208,7 +231,7 @@
 
 </fieldset></td>
 </tr>
-<tr valign="top">
+<tr class="avatar-settings<?php if ( ! $show_avatars ) echo ' hide-if-js'; ?>">
 <th scope="row"><?php _e('Default Avatar'); ?></th>
 <td class="defaultavatarpicker"><fieldset><legend class="screen-reader-text"><span><?php _e('Default Avatar'); ?></span></legend>
 
@@ -216,7 +239,7 @@
 
 <?php
 $avatar_defaults = array(
-	'mystery' => __('Mystery Man'),
+	'mystery' => __('Mystery Person'),
 	'blank' => __('Blank'),
 	'gravatar_default' => __('Gravatar Logo'),
 	'identicon' => __('Identicon (Generated)'),
@@ -240,16 +263,25 @@
 	$default = 'mystery';
 $size = 32;
 $avatar_list = '';
+
+// Force avatars on to display these choices
+add_filter( 'pre_option_show_avatars', '__return_true', 100 );
+
 foreach ( $avatar_defaults as $default_key => $default_name ) {
 	$selected = ($default == $default_key) ? 'checked="checked" ' : '';
 	$avatar_list .= "\n\t<label><input type='radio' name='avatar_default' id='avatar_{$default_key}' value='" . esc_attr($default_key) . "' {$selected}/> ";
 
 	$avatar = get_avatar( $user_email, $size, $default_key );
-	$avatar_list .= preg_replace("/src='(.+?)'/", "src='\$1&amp;forcedefault=1'", $avatar);
+	$avatar = preg_replace( "/src='(.+?)'/", "src='\$1&amp;forcedefault=1'", $avatar );
+	$avatar = preg_replace( "/srcset='(.+?) 2x'/", "srcset='\$1&amp;forcedefault=1 2x'", $avatar );
+	$avatar_list .= $avatar;
 
 	$avatar_list .= ' ' . $default_name . '</label>';
 	$avatar_list .= '<br />';
 }
+
+remove_filter( 'pre_option_show_avatars', '__return_true', 100 );
+
 /**
  * Filter the HTML output of the default avatar list.
  *