Compare plain list item pre blank.

src/parser/plain_list.rs

@@ -45,6 +45,7 @@ use crate::types::Object;
 use crate::types::PlainList;
 use crate::types::PlainListItem;
 use crate::types::PlainListItemCounter;
+use crate::types::PlainListItemPreBlank;
 use crate::types::PlainListType;
 
 #[cfg_attr(feature = "tracing", tracing::instrument(ret, level = "debug"))]
@@ -220,6 +221,7 @@ fn plain_list_item<'b, 'g, 'r, 's>(
                         tag: maybe_tag
                             .map(|(_ws, item_tag)| item_tag)
                             .unwrap_or(Vec::new()),
+                        pre_blank: 0,
                         children: Vec::new(),
                     },
                 ),
@@ -227,7 +229,11 @@ fn plain_list_item<'b, 'g, 'r, 's>(
         }
         Err(_) => {}
     };
-    let (remaining, _ws) = item_tag_post_gap(&parser_context, remaining)?;
+    let (remaining, pre_blank) = item_tag_post_gap(&parser_context, remaining)?;
+    let pre_blank = Into::<&str>::into(pre_blank)
+        .bytes()
+        .filter(|b| *b == b'\n')
+        .count();
 
     let (mut remaining, (mut children, _exit_contents)) = many_till(
         include_input(parser_with_context!(element(true))(&parser_context)),
@@ -266,6 +272,8 @@ fn plain_list_item<'b, 'g, 'r, 's>(
                 tag: maybe_tag
                     .map(|(_ws, item_tag)| item_tag)
                     .unwrap_or(Vec::new()),
+                pre_blank: PlainListItemPreBlank::try_from(pre_blank)
+                    .expect("pre-blank cannot be larger than 2."),
                 children: children.into_iter().map(|(_start, item)| item).collect(),
             },
         ),