Lifetime issue.

src/parser/text.rs

@@ -1,3 +1,6 @@
+use std::cell::RefCell;
+use std::rc::Rc;
+
 /*
 
 hypothetical link:
@@ -133,7 +136,7 @@ pub fn paragraph_end(input: &str) -> Res<&str, &str> {
 }
 
 pub fn document(input: &str) -> Res<&str, Vec<(Vec<TextElement>, &str)>> {
-    let initial_context = NomContext::new(Box::new(paragraph_end));
+    let initial_context = NomContext::new(Rc::new(RefCell::new(paragraph_end)));
     todo!()
     // many1(parser_with_context!(paragraph)(initial_context))(input)
 }