Bundled Themes: Add link to privacy policy page in footer.

If a privacy policy has been set, then a link to it will automatically be shown in the footer.

The element containing the "Proudly powered by WordPress" link was chosen for the new policy link, in order to minimize visual conflicts with custom CSS that was written before the new link existed. Unfortunately, some minor conflicts are expected and unavoidable. Adding this link is required as part of GDPR compliance, and the benefits outweigh the downsides. 

To further mitigate the conflicts, a new imprint class was added to the "Proudly powered..." link, in order to facilitate targeting each link invididually with custom styles.

This was accidentally not backported to the `4.9` branch before the beta/RC phase, but there was a consensus that it is safe to do that this late in the release cycle. 
See https://wordpress.slack.com/archives/C02RQBWTW/p1526577643000132.
See https://wordpress.slack.com/archives/C02RQBWTW/p1526580781000240.

Props xkon, laurelfulford, birgire, azaozz, iandunn.
Merges [43051] to the 4.9 branch.
See #43715.

Built from https://develop.svn.wordpress.org/branches/4.9@43294


git-svn-id: http://core.svn.wordpress.org/branches/4.9@43123 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-content/themes/twentyeleven/footer.php

@@ -25,7 +25,14 @@
 
 			<div id="site-generator">
 				<?php do_action( 'twentyeleven_credits' ); ?>
-				<a href="<?php echo esc_url( __( 'https://wordpress.org/', 'twentyeleven' ) ); ?>" title="<?php esc_attr_e( 'Semantic Personal Publishing Platform', 'twentyeleven' ); ?>"><?php printf( __( 'Proudly powered by %s', 'twentyeleven' ), 'WordPress' ); ?></a>
+				<?php
+				if ( function_exists( 'the_privacy_policy_link' ) ) {
+					the_privacy_policy_link( '', '<span role="separator" aria-hidden="true"></span>' );
+				}
+				?>
+				<a href="<?php echo esc_url( __( 'https://wordpress.org/', 'twentyeleven' ) ); ?>" class="imprint" title="<?php esc_attr_e( 'Semantic Personal Publishing Platform', 'twentyeleven' ); ?>">
+					<?php printf( __( 'Proudly powered by %s', 'twentyeleven' ), 'WordPress' ); ?>
+				</a>
 			</div>
 	</footer><!-- #colophon -->
 </div><!-- #page -->

wp-content/themes/twentyeleven/style.css

@@ -2355,6 +2355,12 @@ p.comment-form-comment {
 	color: #555;
 	font-weight: bold;
 }
+#site-generator span[role=separator] {
+	padding: 0 0.25em 0 0.5em
+}
+#site-generator span[role=separator]::before {
+	content: '\007c';
+}
 
 
 /* =Responsive Structure

wp-content/themes/twentyfifteen/footer.php

@@ -22,7 +22,14 @@
 				 */
 				do_action( 'twentyfifteen_credits' );
 			?>
-			<a href="<?php echo esc_url( __( 'https://wordpress.org/', 'twentyfifteen' ) ); ?>"><?php printf( __( 'Proudly powered by %s', 'twentyfifteen' ), 'WordPress' ); ?></a>
+			<?php
+			if ( function_exists( 'the_privacy_policy_link' ) ) {
+				the_privacy_policy_link( '', '<span role="separator" aria-hidden="true"></span>' );
+			}
+			?>
+			<a href="<?php echo esc_url( __( 'https://wordpress.org/', 'twentyfifteen' ) ); ?>" class="imprint">
+				<?php printf( __( 'Proudly powered by %s', 'twentyfifteen' ), 'WordPress' ); ?>
+			</a>
 		</div><!-- .site-info -->
 	</footer><!-- .site-footer -->
 

wp-content/themes/twentyfifteen/style.css

@@ -2446,6 +2446,13 @@ a.post-thumbnail:focus {
 	color: #333;
 }
 
+.site-info span[role=separator] {
+	padding: 0 0.25em 0 0.5em;
+}
+
+.site-info span[role=separator]::before {
+	content: '\002f';
+}
 
 /**
  * 14.0 Media

wp-content/themes/twentyfourteen/footer.php

@@ -18,7 +18,14 @@
 
 			<div class="site-info">
 				<?php do_action( 'twentyfourteen_credits' ); ?>
-				<a href="<?php echo esc_url( __( 'https://wordpress.org/', 'twentyfourteen' ) ); ?>"><?php printf( __( 'Proudly powered by %s', 'twentyfourteen' ), 'WordPress' ); ?></a>
+				<?php
+				if ( function_exists( 'the_privacy_policy_link' ) ) {
+					the_privacy_policy_link( '', '<span role="separator" aria-hidden="true"></span>' );
+				}
+				?>
+				<a href="<?php echo esc_url( __( 'https://wordpress.org/', 'twentyfourteen' ) ); ?>" class="imprint">
+					<?php printf( __( 'Proudly powered by %s', 'twentyfourteen' ), 'WordPress' ); ?>
+				</a>
 			</div><!-- .site-info -->
 		</footer><!-- #colophon -->
 	</div><!-- #page -->

wp-content/themes/twentyfourteen/rtl.css

@@ -358,6 +358,14 @@ td {
 	margin: -1px 0 0 18px;
 }
 
+/**
+ * 8.0 Footer
+ * -----------------------------------------------------------------------------
+ */
+
+.site-info span[role=separator] {
+	padding: 0 0.5em;
+}
 
 /**
  * 9.0 Featured Content

wp-content/themes/twentyfourteen/style.css

@@ -2923,6 +2923,13 @@ a.post-thumbnail:hover {
 	color: #41a62a;
 }
 
+.site-info span[role=separator] {
+	padding: 0 0.25em 0 0.5em;
+}
+
+.site-info span[role=separator]::before {
+	content: '\002f';
+}
 
 /**
  * 9.0 Featured Content

wp-content/themes/twentyseventeen/style.css

@@ -2378,6 +2378,14 @@ body:not(.twentyseventeen-front-page) .entry-header {
 	width: 100%;
 }
 
+.site-info span[role=separator] {
+	padding: 0 0.2em 0 0.4em;
+}
+
+.site-info span[role=separator]::before {
+	content: '\002f';
+}
+
 /*--------------------------------------------------------------
 14.0 Comments
 --------------------------------------------------------------*/

wp-content/themes/twentyseventeen/template-parts/footer/site-info.php

@@ -10,5 +10,12 @@
 
 ?>
 <div class="site-info">
-	<a href="<?php echo esc_url( __( 'https://wordpress.org/', 'twentyseventeen' ) ); ?>"><?php printf( __( 'Proudly powered by %s', 'twentyseventeen' ), 'WordPress' ); ?></a>
+	<?php
+	if ( function_exists( 'the_privacy_policy_link' ) ) {
+		the_privacy_policy_link( '', '<span role="separator" aria-hidden="true"></span>' );
+	}
+	?>
+	<a href="<?php echo esc_url( __( 'https://wordpress.org/', 'twentyseventeen' ) ); ?>" class="imprint">
+		<?php printf( __( 'Proudly powered by %s', 'twentyseventeen' ), 'WordPress' ); ?>
+	</a>
 </div><!-- .site-info -->

wp-content/themes/twentysixteen/footer.php

@@ -48,7 +48,14 @@
 					do_action( 'twentysixteen_credits' );
 				?>
 				<span class="site-title"><a href="<?php echo esc_url( home_url( '/' ) ); ?>" rel="home"><?php bloginfo( 'name' ); ?></a></span>
-				<a href="<?php echo esc_url( __( 'https://wordpress.org/', 'twentysixteen' ) ); ?>"><?php printf( __( 'Proudly powered by %s', 'twentysixteen' ), 'WordPress' ); ?></a>
+				<?php
+				if ( function_exists( 'the_privacy_policy_link' ) ) {
+					the_privacy_policy_link( '', '<span role="separator" aria-hidden="true"></span>' );
+				}
+				?>
+				<a href="<?php echo esc_url( __( 'https://wordpress.org/', 'twentysixteen' ) ); ?>" class="imprint">
+					<?php printf( __( 'Proudly powered by %s', 'twentysixteen' ), 'WordPress' ); ?>
+				</a>
 			</div><!-- .site-info -->
 		</footer><!-- .site-footer -->
 	</div><!-- .site-inner -->

wp-content/themes/twentysixteen/rtl.css

@@ -98,7 +98,8 @@ textarea,
 .site-footer .site-title,
 .site-footer .site-title:after,
 .widecolumn label,
-.widecolumn .mu_register label {
+.widecolumn .mu_register label,
+.site-footer span[role=separator] {
 	font-family: Arial, Tahoma, sans-serif;
 }
 
@@ -407,16 +408,6 @@ body:not(.search-results) .entry-summary .alignleft {
 	font-family: Arial, Tahoma, sans-serif;
 }
 
-/**
- * 8.4 - Footer
- */
-
-.site-footer .site-title:after {
-	padding-right: 0.538461538em;
-	padding-left: 0.307692308em;
-}
-
-
 /**
  * 9.0 - Multisites
  */

wp-content/themes/twentysixteen/style.css

@@ -2453,6 +2453,16 @@ body.search-no-results .page-header {
 	padding: 0 0.307692308em 0 0.538461538em;
 }
 
+.site-footer span[role=separator] {
+	font-family: Montserrat, sans-serif;
+	opacity: 0.7;
+	padding: 0 0.307692308em 0 0.538461538em;
+}
+
+.site-footer span[role=separator]::before {
+	content: '\002f';
+}
+
 
 /**
  * 12.0 - Media

wp-content/themes/twentyten/footer.php

@@ -27,6 +27,11 @@
 				<a href="<?php echo esc_url( home_url( '/' ) ); ?>" title="<?php echo esc_attr( get_bloginfo( 'name', 'display' ) ); ?>" rel="home">
 					<?php bloginfo( 'name' ); ?>
 				</a>
+				<?php
+				if ( function_exists( 'the_privacy_policy_link' ) ) {
+					the_privacy_policy_link( '<span role="separator" aria-hidden="true"></span>', '' );
+				}
+				?>
 			</div><!-- #site-info -->
 
 			<div id="site-generator">
@@ -37,7 +42,9 @@
 				 * @since Twenty Ten 1.0
 				 */
 				do_action( 'twentyten_credits' ); ?>
-				<a href="<?php echo esc_url( __( 'https://wordpress.org/', 'twentyten' ) ); ?>" title="<?php esc_attr_e( 'Semantic Personal Publishing Platform', 'twentyten' ); ?>"><?php printf( __( 'Proudly powered by %s.', 'twentyten' ), 'WordPress' ); ?></a>
+				<a href="<?php echo esc_url( __( 'https://wordpress.org/', 'twentyten' ) ); ?>" class="imprint" title="<?php esc_attr_e( 'Semantic Personal Publishing Platform', 'twentyten' ); ?>">
+					<?php printf( __( 'Proudly powered by %s.', 'twentyten' ), 'WordPress' ); ?>
+				</a>
 			</div><!-- #site-generator -->
 
 		</div><!-- #colophon -->

wp-content/themes/twentyten/style.css

@@ -1322,6 +1322,12 @@ img#wpstats {
 	display: block;
 	margin: 0 auto 10px;
 }
+#site-info span[role=separator] {
+	padding: 0 0.6em 0 0.3em;
+}
+#site-info span[role=separator]::before {
+	content: '\007c';
+}
 
 
 /* =Mobile Safari ( iPad, iPhone and iPod Touch )

wp-content/themes/twentythirteen/footer.php

@@ -16,7 +16,14 @@
 
 			<div class="site-info">
 				<?php do_action( 'twentythirteen_credits' ); ?>
-				<a href="<?php echo esc_url( __( 'https://wordpress.org/', 'twentythirteen' ) ); ?>"><?php printf( __( 'Proudly powered by %s', 'twentythirteen' ), 'WordPress' ); ?></a>
+				<?php
+				if ( function_exists( 'the_privacy_policy_link' ) ) {
+					the_privacy_policy_link( '', '<span role="separator" aria-hidden="true"></span>' );
+				}
+				?>
+				<a href="<?php echo esc_url( __( 'https://wordpress.org/', 'twentythirteen' ) ); ?>" class="imprint">
+					<?php printf( __( 'Proudly powered by %s', 'twentythirteen' ), 'WordPress' ); ?>
+				</a>
 			</div><!-- .site-info -->
 		</footer><!-- #colophon -->
 	</div><!-- #page -->

wp-content/themes/twentythirteen/rtl.css

@@ -571,6 +571,9 @@ div.nav-menu > ul {
 	margin-right: auto;
 }
 
+.site-footer span[role=separator] {
+	padding: 0 0.5em;
+}
 
 /**
  * 8.0 Media Queries

wp-content/themes/twentythirteen/style.css

@@ -2709,6 +2709,13 @@ footer.entry-meta {
 	margin: -10px auto 0;
 }
 
+.site-footer span[role=separator] {
+	padding: 0 0.25em 0 0.5em;
+}
+
+.site-footer span[role=separator]::before {
+	content: '\002f';
+}
 
 /**
  * 8.0 Media Queries

wp-content/themes/twentytwelve/footer.php

@@ -13,7 +13,14 @@
 	<footer id="colophon" role="contentinfo">
 		<div class="site-info">
 			<?php do_action( 'twentytwelve_credits' ); ?>
-			<a href="<?php echo esc_url( __( 'https://wordpress.org/', 'twentytwelve' ) ); ?>" title="<?php esc_attr_e( 'Semantic Personal Publishing Platform', 'twentytwelve' ); ?>"><?php printf( __( 'Proudly powered by %s', 'twentytwelve' ), 'WordPress' ); ?></a>
+			<?php
+			if ( function_exists( 'the_privacy_policy_link' ) ) {
+				the_privacy_policy_link( '', '<span role="separator" aria-hidden="true"></span>' );
+			}
+			?>
+			<a href="<?php echo esc_url( __( 'https://wordpress.org/', 'twentytwelve' ) ); ?>" class="imprint" title="<?php esc_attr_e( 'Semantic Personal Publishing Platform', 'twentytwelve' ); ?>">
+				<?php printf( __( 'Proudly powered by %s', 'twentytwelve' ), 'WordPress' ); ?>
+			</a>
 		</div><!-- .site-info -->
 	</footer><!-- #colophon -->
 </div><!-- #page -->

wp-content/themes/twentytwelve/style.css

@@ -694,6 +694,12 @@ footer[role="contentinfo"] a {
 footer[role="contentinfo"] a:hover {
 	color: #21759b;
 }
+.site-info span[role=separator] {
+	padding: 0 0.3em 0 0.6em;
+}
+.site-info span[role=separator]::before {
+	content: '\002f';
+}
 
 
 /* =Main content and comment content

wp-includes/version.php

@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '4.9.6-RC2-43289';
+$wp_version = '4.9.6-RC2-43294';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.