fix build

src/expr.rs

@@ -39,15 +39,15 @@ pub fn parse<S: State<T>, T>(state: &mut S, buffs: &mut Buffers<T>, src: &str) {
         },
         &mut buffs.output,
         src,
-        |_, _| (),
+        &mut |_, _| (),
     );
 }
 
 pub fn parse_after<S: State<T>, T, F: FnMut(&mut S, &str)>(
     state: &mut S,
     buffs: &mut Buffers<T>,
     src: &str,
-    pre_parse: F,
+    mut pre_parse: F,
 ) {
     inner_parse(
         state,
@@ -57,7 +57,7 @@ pub fn parse_after<S: State<T>, T, F: FnMut(&mut S, &str)>(
         },
         &mut buffs.output,
         src,
-        pre_parse,
+        &mut pre_parse,
     );
 }
 
@@ -66,7 +66,7 @@ fn inner_parse<S: State<T>, T, F: FnMut(&mut S, &str)>(
     args_buf: &mut ArgsMut<T>,
     output_buf: &mut Sections<T>,
     src: &str,
-    mut pre_parse: F,
+    pre_parse: &mut F,
 ) {
     pre_parse(state, src);
     let mut prev_expr_end = 0;
@@ -83,7 +83,7 @@ fn inner_parse<S: State<T>, T, F: FnMut(&mut S, &str)>(
         for arg_captures in ARGS_REGEX.captures_iter(args_str) {
             let arg = arg_captures.name("a").unwrap().as_str().trim();
             let output_offset = output_buf.len();
-            inner_parse(state, args_buf, output_buf, arg, &mut pre_parse);
+            inner_parse(state, args_buf, output_buf, arg, pre_parse);
             args_buf.extract(output_buf, output_offset);
         }
         let args = args_buf.get_from(args_offset).unwrap();