diff --git a/src/parser/failable_sequence.rs b/src/parser/failable_sequence.rs
index 16f4637..ff7057a 100644
--- a/src/parser/failable_sequence.rs
+++ b/src/parser/failable_sequence.rs
@@ -1,30 +1,25 @@
 macro_rules! failable_sequence {
     ($name:ident,$inp:ident,$context:ident,$begin_matcher:expr,$element_matcher:expr,$success_matcher:expr) => {
-        pub fn $name<'b, F>(
-            $context: &'b NomContext<F>,
+        pub fn $name<F>(
+            $context: &NomContext<F>,
         ) -> impl for<'a> FnMut(
             &'a str,
         ) -> nom::IResult<
             &'a str,
             crate::parser::text::Sequence<'a>,
             VerboseError<&'a str>,
-        > + 'b
+        > + '_
         where
-            F: for<'a> nom::Parser<&'a str, &'a str, VerboseError<&'a str>>,
+            F: for<'a> FnMut(&'a str) -> nom::IResult<&'a str, &'a str, VerboseError<&'a str>>,
         {
-            let fail_matcher = $context.fail_matcher.clone();
-            let new_fail_matcher = alt((
-                |i| fail_matcher.borrow_mut().parse(i),
-                recognize($success_matcher),
-            ));
-
             move |$inp: &str| {
                 let new_context = $context.with_no_bold();
                 // let other_new_context = NomContext::with_additional_fail_matcher(
                 //     |i: &str| recognize($success_matcher)(i),
                 //     $context,
                 // );
-                let other_new_context = super::nom_context::NomContext::new(new_fail_matcher);
+                // let other_new_context =
+                //     super::nom_context::NomContext::new($context.fail_matcher.clone());
                 let element_matcher = recognize($element_matcher(&new_context));
                 let local_fail_matcher = $context.fail_matcher.clone();
                 let ret = map(
@@ -32,11 +27,11 @@ macro_rules! failable_sequence {
                         $begin_matcher,
                         nom::multi::many_till(
                             nom::sequence::preceded(
-                                not(|i| local_fail_matcher.borrow_mut().parse(i)),
+                                not(|i| local_fail_matcher.borrow_mut()(i)),
                                 element_matcher,
                             ),
                             nom::sequence::preceded(
-                                not(|i| local_fail_matcher.borrow_mut().parse(i)),
+                                not(|i| local_fail_matcher.borrow_mut()(i)),
                                 $success_matcher,
                             ),
                         ),
diff --git a/src/parser/nom_context.rs b/src/parser/nom_context.rs
index fb39478..e83f361 100644
--- a/src/parser/nom_context.rs
+++ b/src/parser/nom_context.rs
@@ -1,5 +1,5 @@
 use nom::error::VerboseError;
-use nom::Parser;
+use nom::IResult;
 use std::cell::RefCell;
 use std::rc::Rc;
 
@@ -14,7 +14,7 @@ pub struct NomContext<F> {
 
 impl<F> NomContext<F>
 where
-    F: for<'a> Parser<&'a str, &'a str, VerboseError<&'a str>>,
+    F: for<'a> FnMut(&'a str) -> IResult<&'a str, &'a str, VerboseError<&'a str>>,
 {
     pub fn new(fail_matcher: F) -> Self {
         NomContext {