Update to WordPress 5.3.2. For more information, see https://wordpres…

…s.org/news/2019/12/wordpress-5-3-1-security-and-maintenance-release/

wp-admin/about.php

@@ -51,6 +51,31 @@
 		<div class="about__section changelog">
 			<div class="column">
 				<h2><?php _e( 'Maintenance and Security Releases' ); ?></h2>
+				<p>
+					<?php
+					printf(
+						/* translators: 1: WordPress version number, 2: plural number of bugs. More than one security issue. */
+						_n(
+							'<strong>Version %1$s</strong> addressed %2$s bug.',
+							'<strong>Version %1$s</strong> addressed %2$s bugs.',
+							5
+						),
+						'5.3.2',
+						number_format_i18n( 5 )
+					);
+					?>
+					<?php
+					printf(
+						/* translators: %s: HelpHub URL */
+						__( 'For more information, see <a href="%s">the release notes</a>.' ),
+						sprintf(
+							/* translators: %s: WordPress version */
+							esc_url( __( 'https://wordpress.org/support/wordpress-version/version-%s/' ) ),
+							sanitize_title( '5.3.2' )
+						)
+					);
+					?>
+				</p>
 				<p>
 					<?php
 					printf(

wp-admin/css/colors/_admin.scss

@@ -104,9 +104,13 @@ textarea:focus {
 	.button.active,
 	.button.active:focus,
 	.button.active:hover {
-		border-color: darken( $button-color, 5% );
-		color: darken( $button-text-color, 5% );
-		box-shadow: inset 0 2px 5px -3px darken( $button-color, 5% );
+		border-color: $button-color;
+		color: darken( #32373c, 5% );
+		box-shadow: inset 0 2px 5px -3px $button-color;
+	}
+
+	.button.active:focus {
+		box-shadow: 0 0 0 1px #32373c;
 	}
 
 	.button-primary {

wp-admin/css/colors/blue/colors-rtl.css

@@ -91,9 +91,13 @@ textarea:focus {
 .wp-core-ui .button.active,
 .wp-core-ui .button.active:focus,
 .wp-core-ui .button.active:hover {
-  border-color: #dd9f32;
-  color: #f2f2f2;
-  box-shadow: inset 0 2px 5px -3px #dd9f32;
+  border-color: #e1a948;
+  color: #262a2e;
+  box-shadow: inset 0 2px 5px -3px #e1a948;
+}
+
+.wp-core-ui .button.active:focus {
+  box-shadow: 0 0 0 1px #32373c;
 }
 
 .wp-core-ui .button-primary {

wp-admin/css/colors/blue/colors.css

@@ -91,9 +91,13 @@ textarea:focus {
 .wp-core-ui .button.active,
 .wp-core-ui .button.active:focus,
 .wp-core-ui .button.active:hover {
-  border-color: #dd9f32;
-  color: #f2f2f2;
-  box-shadow: inset 0 2px 5px -3px #dd9f32;
+  border-color: #e1a948;
+  color: #262a2e;
+  box-shadow: inset 0 2px 5px -3px #e1a948;
+}
+
+.wp-core-ui .button.active:focus {
+  box-shadow: 0 0 0 1px #32373c;
 }
 
 .wp-core-ui .button-primary {

wp-admin/css/colors/coffee/colors-rtl.css

@@ -91,9 +91,13 @@ textarea:focus {
 .wp-core-ui .button.active,
 .wp-core-ui .button.active:focus,
 .wp-core-ui .button.active:hover {
-  border-color: #bf9878;
-  color: #f2f2f2;
-  box-shadow: inset 0 2px 5px -3px #bf9878;
+  border-color: #c7a589;
+  color: #262a2e;
+  box-shadow: inset 0 2px 5px -3px #c7a589;
+}
+
+.wp-core-ui .button.active:focus {
+  box-shadow: 0 0 0 1px #32373c;
 }
 
 .wp-core-ui .button-primary {

wp-admin/css/colors/coffee/colors.css

@@ -91,9 +91,13 @@ textarea:focus {
 .wp-core-ui .button.active,
 .wp-core-ui .button.active:focus,
 .wp-core-ui .button.active:hover {
-  border-color: #bf9878;
-  color: #f2f2f2;
-  box-shadow: inset 0 2px 5px -3px #bf9878;
+  border-color: #c7a589;
+  color: #262a2e;
+  box-shadow: inset 0 2px 5px -3px #c7a589;
+}
+
+.wp-core-ui .button.active:focus {
+  box-shadow: 0 0 0 1px #32373c;
 }
 
 .wp-core-ui .button-primary {

wp-admin/css/colors/ectoplasm/colors-rtl.css

@@ -91,9 +91,13 @@ textarea:focus {
 .wp-core-ui .button.active,
 .wp-core-ui .button.active:focus,
 .wp-core-ui .button.active:hover {
-  border-color: #93a43e;
-  color: #f2f2f2;
-  box-shadow: inset 0 2px 5px -3px #93a43e;
+  border-color: #a3b745;
+  color: #262a2e;
+  box-shadow: inset 0 2px 5px -3px #a3b745;
+}
+
+.wp-core-ui .button.active:focus {
+  box-shadow: 0 0 0 1px #32373c;
 }
 
 .wp-core-ui .button-primary {

wp-admin/css/colors/ectoplasm/colors.css

@@ -91,9 +91,13 @@ textarea:focus {
 .wp-core-ui .button.active,
 .wp-core-ui .button.active:focus,
 .wp-core-ui .button.active:hover {
-  border-color: #93a43e;
-  color: #f2f2f2;
-  box-shadow: inset 0 2px 5px -3px #93a43e;
+  border-color: #a3b745;
+  color: #262a2e;
+  box-shadow: inset 0 2px 5px -3px #a3b745;
+}
+
+.wp-core-ui .button.active:focus {
+  box-shadow: 0 0 0 1px #32373c;
 }
 
 .wp-core-ui .button-primary {

wp-admin/css/colors/light/colors-rtl.css

@@ -91,9 +91,13 @@ textarea:focus {
 .wp-core-ui .button.active,
 .wp-core-ui .button.active:focus,
 .wp-core-ui .button.active:hover {
-  border-color: #0490b3;
-  color: #262626;
-  box-shadow: inset 0 2px 5px -3px #0490b3;
+  border-color: #04a4cc;
+  color: #262a2e;
+  box-shadow: inset 0 2px 5px -3px #04a4cc;
+}
+
+.wp-core-ui .button.active:focus {
+  box-shadow: 0 0 0 1px #32373c;
 }
 
 .wp-core-ui .button-primary {

wp-admin/css/colors/light/colors.css

@@ -91,9 +91,13 @@ textarea:focus {
 .wp-core-ui .button.active,
 .wp-core-ui .button.active:focus,
 .wp-core-ui .button.active:hover {
-  border-color: #0490b3;
-  color: #262626;
-  box-shadow: inset 0 2px 5px -3px #0490b3;
+  border-color: #04a4cc;
+  color: #262a2e;
+  box-shadow: inset 0 2px 5px -3px #04a4cc;
+}
+
+.wp-core-ui .button.active:focus {
+  box-shadow: 0 0 0 1px #32373c;
 }
 
 .wp-core-ui .button-primary {

wp-admin/css/colors/midnight/colors-rtl.css

@@ -91,9 +91,13 @@ textarea:focus {
 .wp-core-ui .button.active,
 .wp-core-ui .button.active:focus,
 .wp-core-ui .button.active:hover {
-  border-color: #dd382d;
-  color: #f2f2f2;
-  box-shadow: inset 0 2px 5px -3px #dd382d;
+  border-color: #e14d43;
+  color: #262a2e;
+  box-shadow: inset 0 2px 5px -3px #e14d43;
+}
+
+.wp-core-ui .button.active:focus {
+  box-shadow: 0 0 0 1px #32373c;
 }
 
 .wp-core-ui .button-primary {

wp-admin/css/colors/midnight/colors.css

@@ -91,9 +91,13 @@ textarea:focus {
 .wp-core-ui .button.active,
 .wp-core-ui .button.active:focus,
 .wp-core-ui .button.active:hover {
-  border-color: #dd382d;
-  color: #f2f2f2;
-  box-shadow: inset 0 2px 5px -3px #dd382d;
+  border-color: #e14d43;
+  color: #262a2e;
+  box-shadow: inset 0 2px 5px -3px #e14d43;
+}
+
+.wp-core-ui .button.active:focus {
+  box-shadow: 0 0 0 1px #32373c;
 }
 
 .wp-core-ui .button-primary {

wp-admin/css/colors/ocean/colors-rtl.css

@@ -91,9 +91,13 @@ textarea:focus {
 .wp-core-ui .button.active,
 .wp-core-ui .button.active:focus,
 .wp-core-ui .button.active:hover {
-  border-color: #8faf91;
-  color: #f2f2f2;
-  box-shadow: inset 0 2px 5px -3px #8faf91;
+  border-color: #9ebaa0;
+  color: #262a2e;
+  box-shadow: inset 0 2px 5px -3px #9ebaa0;
+}
+
+.wp-core-ui .button.active:focus {
+  box-shadow: 0 0 0 1px #32373c;
 }
 
 .wp-core-ui .button-primary {

wp-admin/css/colors/ocean/colors.css

@@ -91,9 +91,13 @@ textarea:focus {
 .wp-core-ui .button.active,
 .wp-core-ui .button.active:focus,
 .wp-core-ui .button.active:hover {
-  border-color: #8faf91;
-  color: #f2f2f2;
-  box-shadow: inset 0 2px 5px -3px #8faf91;
+  border-color: #9ebaa0;
+  color: #262a2e;
+  box-shadow: inset 0 2px 5px -3px #9ebaa0;
+}
+
+.wp-core-ui .button.active:focus {
+  box-shadow: 0 0 0 1px #32373c;
 }
 
 .wp-core-ui .button-primary {

wp-admin/css/colors/sunrise/colors-rtl.css

@@ -91,9 +91,13 @@ textarea:focus {
 .wp-core-ui .button.active,
 .wp-core-ui .button.active:focus,
 .wp-core-ui .button.active:hover {
-  border-color: #d97426;
-  color: #f2f2f2;
-  box-shadow: inset 0 2px 5px -3px #d97426;
+  border-color: #dd823b;
+  color: #262a2e;
+  box-shadow: inset 0 2px 5px -3px #dd823b;
+}
+
+.wp-core-ui .button.active:focus {
+  box-shadow: 0 0 0 1px #32373c;
 }
 
 .wp-core-ui .button-primary {

wp-admin/css/colors/sunrise/colors.css

@@ -91,9 +91,13 @@ textarea:focus {
 .wp-core-ui .button.active,
 .wp-core-ui .button.active:focus,
 .wp-core-ui .button.active:hover {
-  border-color: #d97426;
-  color: #f2f2f2;
-  box-shadow: inset 0 2px 5px -3px #d97426;
+  border-color: #dd823b;
+  color: #262a2e;
+  box-shadow: inset 0 2px 5px -3px #dd823b;
+}
+
+.wp-core-ui .button.active:focus {
+  box-shadow: 0 0 0 1px #32373c;
 }
 
 .wp-core-ui .button-primary {

wp-includes/feed.php

@@ -649,55 +649,59 @@ function self_link() {
 }
 
 /**
- * Get the timestamp of the most recently modified post from WP_Query.
+ * Get the UTC time of the most recently modified post from WP_Query.
  *
- * If viewing a comment feed, the timestamp of the most recently modified
+ * If viewing a comment feed, the time of the most recently modified
  * comment will be returned.
  *
  * @global WP_Query $wp_query WordPress Query object.
  *
  * @since 5.2.0
  *
- * @param string $format Format of the timestamp to return, passed to mysql2date.
- *
- * @return string The timestamp.
+ * @param string $format Date format string to return the time in.
+ * @return string|false The time in requested format, or false on failure.
  */
 function get_feed_build_date( $format ) {
 	global $wp_query;
 
-	if ( empty( $wp_query ) || ! $wp_query->have_posts() ) {
-		// Fallback to last time any post was modified or published.
-		return get_lastpostmodified( 'GMT' );
-	}
+	$datetime          = false;
+	$max_modified_time = false;
+	$utc               = new DateTimeZone( 'UTC' );
 
-	// Extract the post modified times from the posts.
-	$modified_times = wp_list_pluck( $wp_query->posts, 'post_modified_gmt' );
+	if ( ! empty( $wp_query ) && $wp_query->have_posts() ) {
+		// Extract the post modified times from the posts.
+		$modified_times = wp_list_pluck( $wp_query->posts, 'post_modified_gmt' );
 
-	// If this is a comment feed, check those objects too.
-	if ( $wp_query->is_comment_feed() && $wp_query->comment_count ) {
-		// Extract the comment modified times from the comments.
-		$comment_times = wp_list_pluck( $wp_query->comments, 'comment_date_gmt' );
+		// If this is a comment feed, check those objects too.
+		if ( $wp_query->is_comment_feed() && $wp_query->comment_count ) {
+			// Extract the comment modified times from the comments.
+			$comment_times = wp_list_pluck( $wp_query->comments, 'comment_date_gmt' );
+
+			// Add the comment times to the post times for comparison.
+			$modified_times = array_merge( $modified_times, $comment_times );
+		}
 
-		// Add the comment times to the post times for comparison.
-		$modified_times = array_merge( $modified_times, $comment_times );
+		// Determine the maximum modified time.
+		$datetime = date_create_immutable_from_format( 'Y-m-d H:i:s', max( $modified_times ), $utc );
 	}
 
-	// Determine the maximum modified time.
-	$datetime = date_create_immutable_from_format(
-		'Y-m-d H:i:s',
-		max( $modified_times ),
-		new DateTimeZone( 'UTC' )
-	);
+	if ( false === $datetime ) {
+		// Fall back to last time any post was modified or published.
+		$datetime = date_create_immutable_from_format( 'Y-m-d H:i:s', get_lastpostmodified( 'GMT' ), $utc );
+	}
 
-	$max_modified_time = $datetime->format( $format );
+	if ( false !== $datetime ) {
+		$max_modified_time = $datetime->format( $format );
+	}
 
 	/**
 	 * Filters the date the last post or comment in the query was modified.
 	 *
 	 * @since 5.2.0
 	 *
-	 * @param string $max_modified_time Date the last post or comment was modified in the query.
-	 * @param string $format            The date format requested in get_feed_build_date.
+	 * @param string|false $max_modified_time Date the last post or comment was modified in the query, in UTC.
+	 *                                        False on failure.
+	 * @param string       $format            The date format requested in get_feed_build_date().
 	 */
 	return apply_filters( 'get_feed_build_date', $max_modified_time, $format );
 }