Port footnote definition.

src/parser/element_parser.rs

@@ -89,7 +89,15 @@ fn _element<'b, 'g, 'r, 's>(
         Element::DynamicBlock
     );
 
-    let footnote_definition_matcher = parser_with_context!(footnote_definition)(context);
+    ak_element!(
+        footnote_definition,
+        &mut affiliated_keywords,
+        post_affiliated_keywords_input,
+        context,
+        input,
+        Element::FootnoteDefinition
+    );
+
     let comment_matcher = parser_with_context!(comment)(context);
     let drawer_matcher = parser_with_context!(drawer)(context);
     let table_matcher = parser_with_context!(org_mode_table)(context);
@@ -113,7 +121,6 @@ fn _element<'b, 'g, 'r, 's>(
         let _enter = span.enter();
 
         opt(alt((
-            map(footnote_definition_matcher, Element::FootnoteDefinition),
             map(comment_matcher, Element::Comment),
             map(drawer_matcher, Element::Drawer),
             map(table_matcher, Element::Table),

src/parser/footnote_definition.rs

@@ -33,21 +33,26 @@ use crate::parser::util::immediate_in_section;
 use crate::parser::util::maybe_consume_trailing_whitespace;
 use crate::parser::util::start_of_line;
 use crate::types::FootnoteDefinition;
+use crate::types::Keyword;
 
 #[cfg_attr(
     feature = "tracing",
     tracing::instrument(ret, level = "debug", skip(context))
 )]
-pub(crate) fn footnote_definition<'b, 'g, 'r, 's>(
+pub(crate) fn footnote_definition<'b, 'g, 'r, 's, AK>(
+    affiliated_keywords: AK,
+    remaining: OrgSource<'s>,
     context: RefContext<'b, 'g, 'r, 's>,
     input: OrgSource<'s>,
-) -> Res<OrgSource<'s>, FootnoteDefinition<'s>> {
+) -> Res<OrgSource<'s>, FootnoteDefinition<'s>>
+where
+    AK: IntoIterator<Item = Keyword<'s>>,
+{
     if immediate_in_section(context, "footnote definition") {
         return Err(nom::Err::Error(CustomError::MyError(MyError(
             "Cannot nest objects of the same element".into(),
         ))));
     }
-    let (remaining, affiliated_keywords) = many0(affiliated_keyword)(input)?;
     start_of_line(remaining)?;
     // Cannot be indented.
     let (remaining, (_, lbl, _, _, _)) = tuple((