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<title>[47982] branches/4.3: General: Backport several commits for release.</title>
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<dt style="float: left; width: 6em; font-weight: bold">Revision</dt> <dd><a style="font-weight: bold" href="https://core.trac.wordpress.org/changeset/47982">47982</a><script type="application/ld+json">{"@context":"http://schema.org","@type":"EmailMessage","description":"Review this Commit","action":{"@type":"ViewAction","url":"https://core.trac.wordpress.org/changeset/47982","name":"Review Commit"}}</script></dd>
<dt style="float: left; width: 6em; font-weight: bold">Author</dt> <dd>whyisjake</dd>
<dt style="float: left; width: 6em; font-weight: bold">Date</dt> <dd>2020-06-10 19:03:59 +0000 (Wed, 10 Jun 2020)</dd>
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<pre style='padding-left: 1em; margin: 2em 0; border-left: 2px solid #ccc; line-height: 1.25; font-size: 105%; font-family: sans-serif'>General: Backport several commits for release.

- Embeds: Ensure that the title attribute is set correctly on embeds.
- Editor: Prevent HTML decoding on by setting the proper editor context.
- Formatting: Ensure that wp_validate_redirect() sanitizes a wider variety of characters.
- Themes: Ensure a broken theme name is returned properly.
- Administration: Add a new filter to extend set-screen-option.

Merges [47947-47951] to the 4.3 branch.

Props xknown, sstoqnov, vortfu, SergeyBiryukov, whyisjake.</pre>

<h3>Modified Paths</h3>
<ul>
<li><a href="#branches43srcwpadminincludesmediaphp">branches/4.3/src/wp-admin/includes/media.php</a></li>
<li><a href="#branches43srcwpadminincludesmiscphp">branches/4.3/src/wp-admin/includes/misc.php</a></li>
<li><a href="#branches43srcwpadminthemesphp">branches/4.3/src/wp-admin/themes.php</a></li>
<li><a href="#branches43srcwpincludespluggablephp">branches/4.3/src/wp-includes/pluggable.php</a></li>
<li><a href="#branches43testsphpunittestsformattingredirectphp">branches/4.3/tests/phpunit/tests/formatting/redirect.php</a></li>
</ul>

</div>
<div id="patch">
<h3>Diff</h3>
<a id="branches43srcwpadminincludesmediaphp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: branches/4.3/src/wp-admin/includes/media.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- branches/4.3/src/wp-admin/includes/media.php      2020-06-10 18:51:33 UTC (rev 47981)
+++ branches/4.3/src/wp-admin/includes/media.php        2020-06-10 19:03:59 UTC (rev 47982)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -2766,9 +2766,12 @@
</span><span class="cx" style="display: block; padding: 0 10px">        <label for="content"><strong><?php _e( 'Description' ); ?></strong><?php
</span><span class="cx" style="display: block; padding: 0 10px">        if ( preg_match( '#^(audio|video)/#', $post->post_mime_type ) ) {
</span><span class="cx" style="display: block; padding: 0 10px">                echo ': ' . __( 'Displayed on attachment pages.' );
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-        } ?></label>
-       <?php wp_editor( $post->post_content, 'attachment_content', $editor_args ); ?>
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ }
</ins><span class="cx" style="display: block; padding: 0 10px"> 
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+        ?>
+       </label>
+       <?php wp_editor( format_to_edit( $post->post_content ), 'attachment_content', $editor_args ); ?>
+
</ins><span class="cx" style="display: block; padding: 0 10px">         </div>
</span><span class="cx" style="display: block; padding: 0 10px">        <?php
</span><span class="cx" style="display: block; padding: 0 10px">        $extras = get_compat_media_markup( $post->ID );
</span></span></pre></div>
<a id="branches43srcwpadminincludesmiscphp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: branches/4.3/src/wp-admin/includes/misc.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- branches/4.3/src/wp-admin/includes/misc.php       2020-06-10 18:51:33 UTC (rev 47981)
+++ branches/4.3/src/wp-admin/includes/misc.php 2020-06-10 19:03:59 UTC (rev 47982)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -413,24 +413,46 @@
</span><span class="cx" style="display: block; padding: 0 10px">                                        return;
</span><span class="cx" style="display: block; padding: 0 10px">                                break;
</span><span class="cx" style="display: block; padding: 0 10px">                        default:
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                                if ( '_page' === substr( $option, -5 ) || 'layout_columns' === $option ) {
+                                       /**
+                                        * Filters a screen option value before it is set.
+                                        *
+                                        * The filter can also be used to modify non-standard [items]_per_page
+                                        * settings. See the parent function for a full list of standard options.
+                                        *
+                                        * Returning false to the filter will skip saving the current option.
+                                        *
+                                        * @since 2.8.0
+                                        * @since 5.4.2 Only applied to options ending with '_page',
+                                        *              or the 'layout_columns' option.
+                                        *
+                                        * @see set_screen_options()
+                                        *
+                                        * @param bool   $keep   Whether to save or skip saving the screen option value.
+                                        *                       Default false.
+                                        * @param string $option The option name.
+                                        * @param int    $value  The number of rows to use.
+                                        */
+                                       $value = apply_filters( 'set-screen-option', false, $option, $value ); // phpcs:ignore WordPress.NamingConventions.ValidHookName.UseUnderscores
+                               }
</ins><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="cx" style="display: block; padding: 0 10px">                                /**
</span><span class="cx" style="display: block; padding: 0 10px">                                 * Filter a screen option value before it is set.
</span><span class="cx" style="display: block; padding: 0 10px">                                 *
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                                 * The filter can also be used to modify non-standard [items]_per_page
-                                * settings. See the parent function for a full list of standard options.
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                          * The dynamic portion of the hook, `$option`, refers to the option name.
</ins><span class="cx" style="display: block; padding: 0 10px">                                  *
</span><span class="cx" style="display: block; padding: 0 10px">                                 * Returning false to the filter will skip saving the current option.
</span><span class="cx" style="display: block; padding: 0 10px">                                 *
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                                 * @since 2.8.0
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                          * @since 5.4.2
</ins><span class="cx" style="display: block; padding: 0 10px">                                  *
</span><span class="cx" style="display: block; padding: 0 10px">                                 * @see set_screen_options()
</span><span class="cx" style="display: block; padding: 0 10px">                                 *
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                                 * @param bool|int $value  Screen option value. Default false to skip.
-                                * @param string   $option The option name.
-                                * @param int      $value  The number of rows to use.
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                          * @param bool   $keep   Whether to save or skip saving the screen option value.
+                                *                       Default false.
+                                * @param string $option The option name.
+                                * @param int    $value  The number of rows to use.
</ins><span class="cx" style="display: block; padding: 0 10px">                                  */
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                                $value = apply_filters( 'set-screen-option', false, $option, $value );
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                         $value = apply_filters( "set_screen_option_{$option}", false, $option, $value );
</ins><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="cx" style="display: block; padding: 0 10px">                                if ( false === $value )
</span><span class="cx" style="display: block; padding: 0 10px">                                        return;
</span></span></pre></div>
<a id="branches43srcwpadminthemesphp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: branches/4.3/src/wp-admin/themes.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- branches/4.3/src/wp-admin/themes.php      2020-06-10 18:51:33 UTC (rev 47981)
+++ branches/4.3/src/wp-admin/themes.php        2020-06-10 19:03:59 UTC (rev 47982)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -285,7 +285,7 @@
</span><span class="cx" style="display: block; padding: 0 10px">        </tr>
</span><span class="cx" style="display: block; padding: 0 10px">        <?php foreach ( $broken_themes as $broken_theme ) : ?>
</span><span class="cx" style="display: block; padding: 0 10px">                <tr>
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                        <td><?php echo $broken_theme->get( 'Name' ) ? $broken_theme->display( 'Name' ) : $broken_theme->get_stylesheet(); ?></td>
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                 <td><?php echo $broken_theme->get( 'Name' ) ? $broken_theme->display( 'Name' ) : esc_html( $broken_theme->get_stylesheet() ); ?></td>
</ins><span class="cx" style="display: block; padding: 0 10px">                         <td><?php echo $broken_theme->errors()->get_error_message(); ?></td>
</span><span class="cx" style="display: block; padding: 0 10px">                        <?php
</span><span class="cx" style="display: block; padding: 0 10px">                        if ( $can_delete ) {
</span></span></pre></div>
<a id="branches43srcwpincludespluggablephp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: branches/4.3/src/wp-includes/pluggable.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- branches/4.3/src/wp-includes/pluggable.php        2020-06-10 18:51:33 UTC (rev 47981)
+++ branches/4.3/src/wp-includes/pluggable.php  2020-06-10 19:03:59 UTC (rev 47982)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -1231,7 +1231,7 @@
</span><span class="cx" style="display: block; padding: 0 10px">                ){1,40}                              # ...one or more times
</span><span class="cx" style="display: block; padding: 0 10px">                )/x';
</span><span class="cx" style="display: block; padding: 0 10px">        $location = preg_replace_callback( $regex, '_wp_sanitize_utf8_in_redirect', $location );
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-        $location = preg_replace('|[^a-z0-9-~+_.?#=&;,/:%!*\[\]()]|i', '', $location);
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ $location = preg_replace('|[^a-z0-9-~+_.?#=&;,/:%!*\[\]()@]|i', '', $location);
</ins><span class="cx" style="display: block; padding: 0 10px">         $location = wp_kses_no_null($location);
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="cx" style="display: block; padding: 0 10px">        // remove %0d and %0a from location
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -1303,7 +1303,7 @@
</span><span class="cx" style="display: block; padding: 0 10px">  * @return string redirect-sanitized URL
</span><span class="cx" style="display: block; padding: 0 10px">  **/
</span><span class="cx" style="display: block; padding: 0 10px"> function wp_validate_redirect($location, $default = '') {
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-        $location = trim( $location, " \t\n\r\0\x08\x0B" );
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ $location = wp_sanitize_redirect( trim( $location, " \t\n\r\0\x08\x0B" ) );
</ins><span class="cx" style="display: block; padding: 0 10px">         // browsers will assume 'http' is your protocol, and will obey a redirect to a URL starting with '//'
</span><span class="cx" style="display: block; padding: 0 10px">        if ( substr($location, 0, 2) == '//' )
</span><span class="cx" style="display: block; padding: 0 10px">                $location = 'http:' . $location;
</span></span></pre></div>
<a id="branches43testsphpunittestsformattingredirectphp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: branches/4.3/tests/phpunit/tests/formatting/redirect.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- branches/4.3/tests/phpunit/tests/formatting/redirect.php  2020-06-10 18:51:33 UTC (rev 47981)
+++ branches/4.3/tests/phpunit/tests/formatting/redirect.php    2020-06-10 19:03:59 UTC (rev 47982)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -31,6 +31,7 @@
</span><span class="cx" style="display: block; padding: 0 10px">                $this->assertEquals('http://example.com/whyisthisintheurl/?param[1]=foo', wp_sanitize_redirect('http://example.com/whyisthisintheurl/?param[1]=foo'));
</span><span class="cx" style="display: block; padding: 0 10px">                $this->assertEquals('http://[2606:2800:220:6d:26bf:1447:aa7]/', wp_sanitize_redirect('http://[2606:2800:220:6d:26bf:1447:aa7]/'));
</span><span class="cx" style="display: block; padding: 0 10px">                $this->assertEquals('http://example.com/search.php?search=(amistillhere)', wp_sanitize_redirect('http://example.com/search.php?search=(amistillhere)'));
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                $this->assertEquals('http://example.com/@username', wp_sanitize_redirect('http://example.com/@username'));
</ins><span class="cx" style="display: block; padding: 0 10px">         }
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="cx" style="display: block; padding: 0 10px">        /**
</span></span></pre>
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