Support blank lines for descriptive list with empty value before final list item.

org_mode_samples/greater_element/plain_list/description_list.org

@@ -9,8 +9,3 @@
 - big gap ::
 
   stuff
-- empty value with blank non-final ::
-
-- empty value with blank final ::
-
-stuff

org_mode_samples/greater_element/plain_list/description_list_empty_value.org

@@ -0,0 +1,6 @@
+- foo ::
+
+- bar ::
+
+
+baz

src/parser/plain_list.rs

@@ -187,7 +187,11 @@ fn plain_list_item<'b, 'g, 'r, 's>(
     )(&parser_context))(remaining);
     match maybe_contentless_item {
         Ok((_rem, _ws)) => {
-            let (remaining, _trailing_ws) = opt(blank_line)(remaining)?;
+            let (remaining, _trailing_ws) = if context.should_consume_trailing_whitespace() {
+                recognize(many0(blank_line))(remaining)?
+            } else {
+                recognize(opt(blank_line))(remaining)?
+            };
             let source = get_consumed(input, remaining);
             return Ok((
                 remaining,
@@ -245,6 +249,7 @@ fn plain_list_item<'b, 'g, 'r, 's>(
     ));
 }
 
+#[derive(Debug)]
 enum BulletType {
     Ordered,
     Unordered,