Add a parser for the todo keyword's value.

src/parser/in_buffer_settings.rs

@@ -25,5 +25,19 @@ pub fn scan_for_in_buffer_settings<'s>(
 
 #[cfg_attr(feature = "tracing", tracing::instrument(ret, level = "debug"))]
 fn in_buffer_settings_key<'s>(input: OrgSource<'s>) -> Res<OrgSource<'s>, OrgSource<'s>> {
-    alt((tag_no_case("todo"), tag_no_case("setupfile")))(input)
+    alt((
+        tag_no_case("archive"),
+        tag_no_case("category"),
+        tag_no_case("columns"),
+        tag_no_case("filetags"),
+        tag_no_case("link"),
+        tag_no_case("priorities"),
+        tag_no_case("property"),
+        tag_no_case("seq_todo"),
+        tag_no_case("setupfile"),
+        tag_no_case("startup"),
+        tag_no_case("tags"),
+        tag_no_case("todo"),
+        tag_no_case("typ_todo"),
+    ))(input)
 }