Apply a similar optimization to the detect element parser but also unify detection of affiliated keywords.

src/parser/fixed_width_area.rs

@@ -89,17 +89,24 @@ fn fixed_width_area_line<'b, 'g, 'r, 's>(
     Ok((remaining, value))
 }
 
-#[cfg_attr(feature = "tracing", tracing::instrument(ret, level = "debug"))]
-pub(crate) fn detect_fixed_width_area<'b, 'g, 'r, 's>(
+#[cfg_attr(
+    feature = "tracing",
+    tracing::instrument(ret, level = "debug", skip(context, affiliated_keywords))
+)]
+pub(crate) fn detect_fixed_width_area<'b, 'g, 'r, 's, AK>(
+    affiliated_keywords: AK,
+    remaining: OrgSource<'s>,
     context: RefContext<'b, 'g, 'r, 's>,
     input: OrgSource<'s>,
-) -> Res<OrgSource<'s>, ()> {
-    let (input, _) = many0(parser_with_context!(affiliated_keyword)(context))(input)?;
+) -> Res<OrgSource<'s>, ()>
+where
+    AK: IntoIterator<Item = Keyword<'s>>,
+{
     tuple((
         start_of_line,
         space0,
         tag(":"),
         alt((tag(" "), org_line_ending)),
-    ))(input)?;
+    ))(remaining)?;
     Ok((input, ()))
 }