Changeset 43879

Timestamp:

11/09/2018 08:28:40 AM (6 years ago)

Author:

pento

Message:

Formatting: Ensure wpautop() isn't run on content generated from blocks.

As do_blocks() is run before wpautop() in the_content filter, we can remove in a Just In Time fashion, before that filter is run.

After wpautop()s original priority has passed, we can re-add it in a Just Too Late fashion, to ensure it's available if the_content filter is run multiple times on a page load.

Props pento, nerrad.
Fixes #45290.

Location:

branches/5.0

Files:

• src/wp-includes/blocks.php (modified) (1 diff)
• src/wp-includes/formatting.php (modified) (1 diff)
• tests/phpunit/tests/blocks/render.php (modified) (1 diff)

branches/5.0/src/wp-includes/blocks.php

@@ -199 +199 @@
  */
 function do_blocks( $content ) {
+    // If there are blocks in this content, we shouldn't run wpautop() on it later.
+    $priority = has_filter( 'the_content', 'wpautop' );
+    if ( false !== $priority && doing_filter( 'the_content' ) && has_blocks( $content ) ) {
+        remove_filter( 'the_content', 'wpautop', $priority );
+        add_filter( 'the_content', '_restore_wpautop_hook', $priority + 1 );
+    }
+
     $blocks = parse_blocks( $content );
     return _recurse_do_blocks( $blocks, $blocks );
+}
+
+/**
+ * If do_blocks() needs to remove wp_autop() from the `the_content` filter, this re-adds it afterwards,
+ * for subsequent `the_content` usage.
+ *
+ * @access private
+ *
+ * @since 5.0.0
+ *
+ * @param string $content The post content running through this filter.
+ * @return string The unmodified content.
+ */
+function _restore_wpautop_hook( $content ) {
+    global $wp_filter;
+    $current_priority = $wp_filter['the_content']->current_priority();
+
+    add_filter( 'the_content', 'wpautop', $current_priority - 1 );
+    remove_filter( 'the_content', '_restore_wpautop_hook', $current_priority );
+
+    return $content;
 }
 

branches/5.0/src/wp-includes/formatting.php

@@ -442 +442 @@
     if ( trim($pee) === '' )
         return '';
-
-    // We don't need to autop posts with blocks in them.
-    if ( has_blocks( $pee ) ) {
-        return $pee;
-    }
 
     // Just to make things a little easier, pad the end.

branches/5.0/tests/phpunit/tests/blocks/render.php

@@ -81 +81 @@
     function handle_shortcode( $atts, $content ) {
         return $content;
+    }
+
+    /**
+     * @ticket 45290
+     */
+    public function test_blocks_arent_autopeed() {
+        $expected_content = 'test';
+        $test_content     = "<!-- wp:fake/block -->\n$expected_content\n<!-- /wp:fake/block -->";
+
+        $current_priority = has_action( 'the_content', 'wpautop' );
+
+        $filtered_content = trim( apply_filters( 'the_content', $test_content ) );
+
+        $this->assertEquals( $expected_content, $filtered_content );
+
+        // Check that wpautop() is still defined in the same place.
+        $this->assertSame( $current_priority, has_action( 'the_content', 'wpautop' ) );
+        // ... and that the restore function has removed itself.
+        $this->assertFalse( has_action( 'the_content', '_restore_wpautop_hook' ) );
+
+        $test_content     = 'test';
+        $expected_content = "<p>$test_content</p>";
+
+        $current_priority = has_action( 'the_content', 'wpautop' );
+
+        $filtered_content = trim( apply_filters( 'the_content', $test_content ) );
+
+        $this->assertEquals( $expected_content, $filtered_content );
+
+        $this->assertSame( $current_priority, has_action( 'the_content', 'wpautop' ) );
+        $this->assertFalse( has_action( 'the_content', '_restore_wpautop_hook' ) );
     }