For some reason it does not work with FnMut for additional fail matchers.

src/parser/nom_context.rs

@@ -7,17 +7,33 @@ use nom::error::VerboseError;
 use nom::IResult;
 use nom::Parser;
 
-pub struct TestContext<T> {
+pub struct ContextLayer<T> {
-    head: ContextReference<T>,
+    data: T,
+    parent: Option<Rc<ContextLayer<T>>>,
+}
+
+impl<T> ContextLayer<T> {
+    pub fn with_new_layer(self: Rc<Self>, new_layer: T) -> ContextLayer<T> {
+        ContextLayer {
+            data: new_layer,
+            parent: Some(self),
+        }
+    }
 }
 
 type ContextReference<T> = Option<Rc<ContextLayer<T>>>;
 
-struct ContextLayer<T> {
+pub struct TestContext<T> {
-    data: T,
+    head: ContextReference<T>,
-    parent: ContextReference<T>,
 }
 
+// type ContextReference<T> = Option<Rc<ContextLayer<T>>>;
+
+// struct ContextLayer<T> {
+//     data: T,
+//     parent: ContextReference<T>,
+// }
+
 pub struct ContextData {
     fail_matcher: ChainBehavior,
 }
@@ -46,7 +62,8 @@ impl TestContext<ContextData> {
 ///// OLD
 /////
 
-type MatcherRef = Rc<RefCell<dyn FnMut(&str) -> IResult<&str, &str, VerboseError<&str>>>>;
+type MatcherRef =
+    Rc<RefCell<dyn for<'s> FnMut(&'s str) -> IResult<&'s str, &'s str, VerboseError<&'s str>>>>;
 
 struct FailChecker<'r>(&'r NomContext<'r>);
 

src/parser/text_element_parser.rs

@@ -46,8 +46,8 @@ fn flat_bold<'s, 'r>(
     i: &'s str,
     context: &'r TestContext<ContextData>,
 ) -> Res<&'s str, TextElement<'s>> {
-    let new_context =
+    let fail_matcher = recognize(bold_end);
-        context.with_additional_fail_matcher(Rc::new(RefCell::new(recognize(bold_end))));
+    let new_context = context.with_additional_fail_matcher(Rc::new(RefCell::new(paragraph_end)));
     // let new_context = context.without_bold(Rc::new(RefCell::new(recognize(bold_end))));
     todo!()
 }