Implement the new fields for regular link.

src/parser/regular_link.rs

@@ -73,7 +73,7 @@ fn regular_link_without_description<'b, 'g, 'r, 's>(
     let (remaining, _opening_bracket) = tag("[[")(input)?;
     let (remaining, path) = pathreg(context, remaining)?;
     let (remaining, _closing_bracket) = tag("]]")(remaining)?;
-    let (remaining, _trailing_whitespace) =
+    let (remaining, post_blank) =
         maybe_consume_object_trailing_whitespace_if_not_exiting(context, remaining)?;
     let source = get_consumed(input, remaining);
     Ok((
@@ -84,6 +84,8 @@ fn regular_link_without_description<'b, 'g, 'r, 's>(
             path: path.path,
             raw_link: path.raw_link,
             search_option: path.search_option,
+            contents: None,
+            post_blank: post_blank.map(Into::<&str>::into),
             children: Vec::new(),
             application: path.application,
         },
@@ -101,9 +103,10 @@ fn regular_link_with_description<'b, 'g, 'r, 's>(
     let (remaining, _opening_bracket) = tag("[[")(input)?;
     let (remaining, path) = pathreg(context, remaining)?;
     let (remaining, _closing_bracket) = tag("][")(remaining)?;
-    let (remaining, description) = description(context, remaining)?;
+    let (remaining, (contents, description)) =
+        consumed(parser_with_context!(description)(context))(remaining)?;
     let (remaining, _closing_bracket) = tag("]]")(remaining)?;
-    let (remaining, _trailing_whitespace) =
+    let (remaining, post_blank) =
         maybe_consume_object_trailing_whitespace_if_not_exiting(context, remaining)?;
     let source = get_consumed(input, remaining);
     Ok((
@@ -114,6 +117,8 @@ fn regular_link_with_description<'b, 'g, 'r, 's>(
             path: path.path,
             raw_link: path.raw_link,
             search_option: path.search_option,
+            contents: Some(Into::<&str>::into(contents)),
+            post_blank: post_blank.map(Into::<&str>::into),
             children: description,
             application: path.application,
         },

src/types/object.rs

@@ -110,6 +110,8 @@ pub struct RegularLink<'s> {
     /// This does not take into account the post-processing that you would get from the upstream emacs org-mode AST. Use `get_search_option` for an equivalent value.
     pub search_option: Option<Cow<'s, str>>,
 
+    pub contents: Option<&'s str>,
+    pub post_blank: Option<&'s str>,
     pub children: Vec<Object<'s>>,
     pub application: Option<Cow<'s, str>>,
 }
@@ -645,11 +647,15 @@ impl<'s> StandardProperties<'s> for RegularLink<'s> {
     }
 
     fn get_contents<'b>(&'b self) -> Option<&'s str> {
-        todo!()
+        self.contents
     }
 
     fn get_post_blank(&self) -> PostBlank {
-        todo!()
+        self.post_blank
+            .map(|post_blank| post_blank.chars().count())
+            .unwrap_or(0)
+            .try_into()
+            .expect("Too much post-blank to fit into a PostBlank.")
     }
 }