Create an also_recognize combinator to make providing source slices fast and safe.

src/parser/paragraph.rs

@@ -1,3 +1,4 @@
+use super::combinator::also_recognize;
 use super::combinator::context_many_till;
 use super::error::Res;
 use super::parser_context::ChainBehavior;
@@ -26,8 +27,11 @@ pub fn paragraph<'r, 's>(context: Context<'r, 's>, i: &'s str) -> Res<&'s str, P
             exit_matcher: ChainBehavior::AndParent(Some(&context_paragraph_end)),
         }))
         .with_additional_node(ContextElement::StartOfParagraph);
-    let (remaining, (many, till)) =
-        context_many_till(&paragraph_context, text_element, context_paragraph_end)(i)?;
+    let (remaining, (source, (many, till))) = also_recognize(context_many_till(
+        &paragraph_context,
+        text_element,
+        context_paragraph_end,
+    ))(i)?;
     let many = many
         .into_iter()
         .filter_map(|token| match token {
@@ -40,6 +44,7 @@ pub fn paragraph<'r, 's>(context: Context<'r, 's>, i: &'s str) -> Res<&'s str, P
         Paragraph {
             contents: many,
             paragraph_end: till,
+            source,
         },
     ))
 }