More efficient checking for loose lists.

This fixes a case like commonmark/cmark#284.
commonmark · Mar 18, 2019 · 5181f25 · 5181f25
1 parent cede389
commit 5181f25
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Showing 2 changed files with 5 additions and 1 deletion.
diff --git a/lib/blocks.js b/lib/blocks.js
@@ -85,9 +85,12 @@ var endsWithBlankLine = function(block) {
             return true;
         }
         var t = block.type;
-        if (t === 'list' || t === 'item') {
+        if (!block._lastLineChecked &&
+            (t === 'list' || t === 'item')) {
+            block._lastLineChecked = true;
             block = block._lastChild;
         } else {
+            block._lastLineChecked = true;
             break;
         }
     }

diff --git a/lib/node.js b/lib/node.js
@@ -76,6 +76,7 @@ var Node = function(nodeType, sourcepos) {
     this._next = null;
     this._sourcepos = sourcepos;
     this._lastLineBlank = false;
+    this._lastLineChecked = false;
     this._open = true;
     this._string_content = null;
     this._literal = null;