diff --git a/magnetar_mmm_parser/src/lib.rs b/magnetar_mmm_parser/src/lib.rs
index ee70239..48a9e17 100644
--- a/magnetar_mmm_parser/src/lib.rs
+++ b/magnetar_mmm_parser/src/lib.rs
@@ -195,6 +195,7 @@ fn space(input: Span) -> IResult<Span, Token> {
 struct Context;
 
 impl Context {
+    #[inline]
     const fn partial<'a>(
         &self,
         func: impl Fn(&Self, Span<'a>) -> IResult<Span<'a>, Token<'a>> + 'static,
@@ -278,22 +279,25 @@ impl Context {
     }
 
     fn tag_block_math<'a>(&self, input: Span<'a>) -> IResult<Span<'a>, Token<'a>> {
+        let start = &tag("\\[");
+        let end = &tag("\\]");
+
         let (input, _) = opt(line_ending)(input)?;
 
         if input.get_column() != 0 {
             return fail(input);
         }
 
-        let (input, _) = tag("\\[")(input)?;
+        let (input, _) = start(input)?;
         let (input, _) = opt(line_ending)(input)?;
 
         let (input, math_span) = recognize(many1_count(tuple((
-            not(tuple((opt(line_ending), tag("\\]")))),
+            not(tuple((opt(line_ending), end))),
             not_line_ending,
         ))))(input)?;
 
         let (input, _) = opt(line_ending)(input)?;
-        let (input, _) = tag("\\]")(input)?;
+        let (input, _) = end(input)?;
         let (input, _) = many0(space)(input)?;
         let (input, _) = not(not_line_ending)(input)?;
         let (input, _) = opt(line_ending)(input)?;