Fix unindented paragraph absorbed into list item after nested block

phpcs.xml

@@ -8,7 +8,10 @@
 
     <exclude-pattern>*/vendor/*</exclude-pattern>
 
-    <rule ref="PhpCollective"/>
+    <rule ref="PhpCollective">
+        <!-- Conflicts with Universal.WhiteSpace.AnonClassKeywordSpacing which PhpCollective enables -->
+        <exclude name="PSR12.Classes.AnonClassDeclaration.SpaceAfterKeyword"/>
+    </rule>
 
     <rule ref="SlevomatCodingStandard.Functions.RequireTrailingCommaInDeclaration"/>
     <rule ref="SlevomatCodingStandard.Functions.RequireTrailingCommaInClosureUse"/>

src/Parser/BlockParser.php

@@ -1500,6 +1500,14 @@ protected function tryParseList(Node $parent, array $lines, int $start): ?int
                             if ($itemInfo !== null && $itemInfo['type'] === $listInfo['type'] && $itemInfo['marker'] === $listInfo['marker'] && $sameStyle) {
                                 break;
                             }
+                            // After a blank line, content dropping back to base indent
+                            // starts a new block outside the list - let parent handle it.
+                            if ($sawBlankLine) {
+                                $lastItemHadBlankAfter = true;
+                                $brokeForParentContent = true;
+
+                                break;
+                            }
                             // Content at base indent that's not a matching list marker
                             // Check if it's a block element - if so, end list content collection
                             // Use isBlockElementStart() which detects blocks regardless of mode

tests/TestCase/Extension/HeadingReferenceExtensionTest.php

@@ -251,7 +251,7 @@ public function testHeadingWithNoTextIsIgnored(): void
 
     public function testUserAuthoredLinkWithMatchingPlaceholderIsNotRewritten(): void
     {
-        $extension = new class ('heading-ref') extends HeadingReferenceExtension {
+        $extension = new class('heading-ref') extends HeadingReferenceExtension {
             protected function generatePlaceholderPrefix(): string
             {
                 return 'collision-placeholder-';

tests/TestCase/NestedBlocksInListsTest.php

@@ -633,4 +633,39 @@ public function testIssue83CodeBlockCase(): void
         // Should NOT be inline code
         $this->assertStringNotContainsString('<p><code>', $result);
     }
+
+    /**
+     * After a nested block inside a list item and a blank line, an
+     * unindented paragraph must terminate the list rather than being
+     * absorbed as a sub-item of the previous list item.
+     *
+     * @see https://github.com/php-collective/djot-php/issues/176
+     */
+    public function testIssue176UnindentedParagraphAfterNestedCodeBlockEndsList(): void
+    {
+        $djot = <<<'DJOT'
+1. Item 1
+2. Item 2
+
+   ```
+   Example
+   ```
+
+New list:
+
+* New item 1
+* New item 2
+DJOT;
+
+        $result = $this->converter->convert($djot);
+
+        $this->assertStringContainsString('</ol>', $result);
+        // The "New list:" paragraph must appear after the ordered list closes.
+        $olClose = strpos($result, '</ol>');
+        $paragraph = strpos($result, '<p>New list:</p>');
+        $this->assertNotFalse($paragraph);
+        $this->assertGreaterThan($olClose, $paragraph);
+        // And the following bullet list must be a sibling, not nested in <li>.
+        $this->assertMatchesRegularExpression('#</ol>\s*<p>New list:</p>\s*<ul>#', $result);
+    }
 }