Don't allow list items that are indented >= 4 spaces.

See commonmark/commonmark-spec#497 and commonmark/commonmark.js@691fc67
thephpleague · Mar 24, 2019 · 36eca58 · 36eca58
1 parent 96261f4
commit 36eca58
Showing 1 changed file with 7 additions and 2 deletions.
diff --git a/src/Block/Parser/ListParser.php b/src/Block/Parser/ListParser.php
@@ -36,20 +36,25 @@ public function parse(ContextInterface $context, Cursor $cursor): bool
             return false;
         }
 
+        $indent = $cursor->getIndent();
+        if ($indent >= 4) {
+            return false;
+        }
+
         $tmpCursor = clone $cursor;
         $tmpCursor->advanceToNextNonSpaceOrTab();
         $rest = $tmpCursor->getRemainder();
 
         if (\preg_match('/^[*+-]/', $rest) === 1) {
             $data = new ListData();
-            $data->markerOffset = $cursor->getIndent();
+            $data->markerOffset = $indent;
             $data->type = ListBlock::TYPE_UNORDERED;
             $data->delimiter = null;
             $data->bulletChar = $rest[0];
             $markerLength = 1;
         } elseif (($matches = RegexHelper::matchAll('/^(\d{1,9})([.)])/', $rest)) && (!($context->getContainer() instanceof Paragraph) || $matches[1] === '1')) {
             $data = new ListData();
-            $data->markerOffset = $cursor->getIndent();
+            $data->markerOffset = $indent;
             $data->type = ListBlock::TYPE_ORDERED;
             $data->start = (int) $matches[1];
             $data->delimiter = $matches[2];