Add CMARK_NODE__LAST_LINE_CHECKED flag.

Use this to avoid unnecessary recursion in ends_with_blank_line.

Closes #284.

1 files changed, 1 insertions, 0 deletions

diff --git a/src/node.h b/src/node.h
index 13901ba..2163230 100644
--- a/src/node.h
+++ b/src/node.h
@@ -49,6 +49,7 @@ typedef struct {
 enum cmark_node__internal_flags {
   CMARK_NODE__OPEN = (1 << 0),
   CMARK_NODE__LAST_LINE_BLANK = (1 << 1),
+  CMARK_NODE__LAST_LINE_CHECKED = (1 << 2),
 };
 
 struct cmark_node {