diff --git a/src/parse/tests.rs b/src/parse/tests.rs
index f8b9dcbb1..9a0a4ce6d 100644
--- a/src/parse/tests.rs
+++ b/src/parse/tests.rs
@@ -251,23 +251,6 @@ fn test_parse_raw() {
         errors: [S(8..8, "expected backtick(s)")]);
 }
 
-#[test]
-fn test_parse_escape_sequences() {
-    // Basic, mostly tested in tokenizer.
-    t!(r"\[" Text("["));
-    t!(r"\u{1F3D5}" nodes: [S(0..9, Text("🏕"))], spans: true);
-
-    // Bad value.
-    t!(r"\u{FFFFFF}"
-        nodes: [Text(r"\u{FFFFFF}")],
-        errors: [S(0..10, "invalid unicode escape sequence")]);
-
-    // No closing brace.
-    t!(r"\u{41*"
-        nodes: [Text("A"), Strong],
-        errors: [S(5..5, "expected closing brace")]);
-}
-
 #[test]
 fn test_parse_groups() {
     // Test paren group.
diff --git a/src/parse/tokens.rs b/src/parse/tokens.rs
index 7741d27f8..85fc49780 100644
--- a/src/parse/tokens.rs
+++ b/src/parse/tokens.rs
@@ -179,7 +179,7 @@ impl<'s> Tokens<'s> {
                 // Parenthesis.
                 '[' | ']' | '{' | '}' => true,
                 // Markup.
-                '*' | '_' | '#' | '~' | '`' => true,
+                '*' | '_' | '#' | '~' | '`' | '$' => true,
                 // Escaping.
                 '\\' => true,
                 _ => false,
@@ -279,7 +279,7 @@ impl<'s> Tokens<'s> {
                 // Parenthesis.
                 '[' | ']' | '{' | '}' |
                 // Markup.
-                '*' | '_' |  '~' | '#' | '`' => {
+                '*' | '_' | '#' | '~' | '`' | '$' => {
                     let start = self.s.index();
                     self.s.eat_assert(c);
                     Token::Text(&self.s.eaten_from(start))
@@ -447,19 +447,19 @@ mod tests {
     use Token::{Ident, *};
     use TokenMode::{Code, Markup};
 
-    fn Raw(text: &str, backticks: usize, terminated: bool) -> Token {
+    const fn Raw(text: &str, backticks: usize, terminated: bool) -> Token {
         Token::Raw(TokenRaw { text, backticks, terminated })
     }
 
-    fn Math(formula: &str, inline: bool, terminated: bool) -> Token {
+    const fn Math(formula: &str, inline: bool, terminated: bool) -> Token {
         Token::Math(TokenMath { formula, inline, terminated })
     }
 
-    fn UnicodeEscape(sequence: &str, terminated: bool) -> Token {
+    const fn UnicodeEscape(sequence: &str, terminated: bool) -> Token {
         Token::UnicodeEscape(TokenUnicodeEscape { sequence, terminated })
     }
 
-    fn Str(string: &str, terminated: bool) -> Token {
+    const fn Str(string: &str, terminated: bool) -> Token {
         Token::Str(TokenStr { string, terminated })
     }
 
@@ -505,7 +505,7 @@ mod tests {
         ('/', None, "//", LineComment("")),
         ('/', None, "/**/", BlockComment("")),
         ('/', Some(Markup), "*", Star),
-        ('/', Some(Markup), "_", Underscore),
+        ('/', Some(Markup), "$ $", Math(" ", true, true)),
         ('/', Some(Markup), r"\\", Text(r"\")),
         ('/', Some(Markup), "#let", Let),
         ('/', Some(Code), "(", LeftParen),
@@ -740,6 +740,7 @@ mod tests {
         t!(Markup: r"\#" => Text("#"));
         t!(Markup: r"\~" => Text("~"));
         t!(Markup: r"\`" => Text("`"));
+        t!(Markup: r"\$" => Text("$"));
 
         // Test unescapable symbols.
         t!(Markup[" /"]: r"\a"   => Text(r"\"), Text("a"));
diff --git a/tests/ref/escaping.png b/tests/ref/escaping.png
new file mode 100644
index 000000000..fedd3e588
Binary files /dev/null and b/tests/ref/escaping.png differ
diff --git a/tests/ref/headings.png b/tests/ref/headings.png
index b16e38a6b..3deecf8f3 100644
Binary files a/tests/ref/headings.png and b/tests/ref/headings.png differ
diff --git a/tests/typ/escaping.typ b/tests/typ/escaping.typ
new file mode 100644
index 000000000..a562dcc0c
--- /dev/null
+++ b/tests/typ/escaping.typ
@@ -0,0 +1,32 @@
+// Test basic symbol escapes.
+
+// Escapable
+\\ \/ \[ \] \{ \} \* \_ \# \~ \` \$
+
+// No need to escape.
+( ) = ;
+
+// Unescapable.
+\a \: \; \( \)
+
+// Escaped comments.
+\//
+\/\* \*\/
+\/* \*/
+
+---
+// Test unicode escapes.
+//
+// error: 5:1-5:11 invalid unicode escape sequence
+// error: 8:6-8:6 expected closing brace
+
+\u{1F3D5} == 🏕
+
+// Bad sequence.
+\u{FFFFFF}
+
+// Missing closing brace.
+\u{41*Bold*
+
+// Escaped escape sequence.
+\\u\{ABC\}
diff --git a/tests/typ/headings.typ b/tests/typ/headings.typ
index 88c76ad38..3a1157462 100644
--- a/tests/typ/headings.typ
+++ b/tests/typ/headings.typ
@@ -17,12 +17,14 @@
 ---
 // Is no heading.
 //
-// error: 4:1-4:6 unexpected invalid token
+// error: 8:1-8:6 unexpected invalid token
 
 \# No heading
 
 Text with # hashtag
 
+Nr#1
+
 #nope
 
 ---
diff --git a/tests/typeset.rs b/tests/typeset.rs
index f3c411519..2b342c5bc 100644
--- a/tests/typeset.rs
+++ b/tests/typeset.rs
@@ -213,14 +213,14 @@ fn test_part(i: usize, src: &str, env: &SharedEnv) -> (bool, Vec<Frame>) {
         ok = false;
 
         for diag in &diags {
-            if ref_diags.binary_search(diag).is_err() {
+            if !ref_diags.contains(diag) {
                 print!("    Unexpected | ");
                 print_diag(diag, &map);
             }
         }
 
         for diag in &ref_diags {
-            if diags.binary_search(diag).is_err() {
+            if !diags.contains(diag) {
                 print!("    Missing    | ");
                 print_diag(diag, &map);
             }