diff --git a/src/syntax/lexer.rs b/src/syntax/lexer.rs
index 0bf7966fd..b79b4c7f4 100644
--- a/src/syntax/lexer.rs
+++ b/src/syntax/lexer.rs
@@ -191,15 +191,15 @@ impl Lexer<'_> {
             ':' => SyntaxKind::Colon,
             '=' => {
                 self.s.eat_while('=');
-                if self.space_and_more() {
+                if self.space_or_end() {
                     SyntaxKind::HeadingMarker
                 } else {
                     self.text()
                 }
             }
-            '-' if self.space_and_more() => SyntaxKind::ListMarker,
-            '+' if self.space_and_more() => SyntaxKind::EnumMarker,
-            '/' if self.space_and_more() => SyntaxKind::TermMarker,
+            '-' if self.space_or_end() => SyntaxKind::ListMarker,
+            '+' if self.space_or_end() => SyntaxKind::EnumMarker,
+            '/' if self.space_or_end() => SyntaxKind::TermMarker,
 
             _ => self.text(),
         }
@@ -363,13 +363,8 @@ impl Lexer<'_> {
         alphanum(prev) && alphanum(next)
     }
 
-    fn space_and_more(&self) -> bool {
-        let mut s = self.s;
-        if !s.at(char::is_whitespace) {
-            return false;
-        }
-        s.eat_while(|c: char| c.is_whitespace() && !is_newline(c));
-        !s.done() && !s.at(is_newline)
+    fn space_or_end(&self) -> bool {
+        self.s.done() || self.s.at(char::is_whitespace)
     }
 }
 
diff --git a/src/syntax/parser.rs b/src/syntax/parser.rs
index afb207b68..5933d481b 100644
--- a/src/syntax/parser.rs
+++ b/src/syntax/parser.rs
@@ -157,7 +157,7 @@ fn emph(p: &mut Parser) {
 fn heading(p: &mut Parser) {
     let m = p.marker();
     p.assert(SyntaxKind::HeadingMarker);
-    whitespace(p);
+    whitespace_line(p);
     markup(p, false, usize::MAX, |kind| {
         kind == SyntaxKind::Label || kind == SyntaxKind::RightBracket
     });
@@ -168,7 +168,7 @@ fn list_item(p: &mut Parser) {
     let m = p.marker();
     p.assert(SyntaxKind::ListMarker);
     let min_indent = p.column(p.prev_end());
-    whitespace(p);
+    whitespace_line(p);
     markup(p, false, min_indent, |kind| kind == SyntaxKind::RightBracket);
     p.wrap(m, SyntaxKind::ListItem);
 }
@@ -177,7 +177,7 @@ fn enum_item(p: &mut Parser) {
     let m = p.marker();
     p.assert(SyntaxKind::EnumMarker);
     let min_indent = p.column(p.prev_end());
-    whitespace(p);
+    whitespace_line(p);
     markup(p, false, min_indent, |kind| kind == SyntaxKind::RightBracket);
     p.wrap(m, SyntaxKind::EnumItem);
 }
@@ -186,18 +186,18 @@ fn term_item(p: &mut Parser) {
     let m = p.marker();
     p.assert(SyntaxKind::TermMarker);
     let min_indent = p.column(p.prev_end());
-    whitespace(p);
+    whitespace_line(p);
     markup(p, false, usize::MAX, |kind| {
         kind == SyntaxKind::Colon || kind == SyntaxKind::RightBracket
     });
     p.expect(SyntaxKind::Colon);
-    whitespace(p);
+    whitespace_line(p);
     markup(p, false, min_indent, |kind| kind == SyntaxKind::RightBracket);
     p.wrap(m, SyntaxKind::TermItem);
 }
 
-fn whitespace(p: &mut Parser) {
-    while p.current().is_trivia() {
+fn whitespace_line(p: &mut Parser) {
+    while !p.newline() && p.current().is_trivia() {
         p.eat();
     }
 }
diff --git a/tests/ref/basics/enum.png b/tests/ref/basics/enum.png
index 5ccdb1ad0..8e48076b8 100644
Binary files a/tests/ref/basics/enum.png and b/tests/ref/basics/enum.png differ
diff --git a/tests/ref/basics/heading.png b/tests/ref/basics/heading.png
index 9cb4d0985..b4f996659 100644
Binary files a/tests/ref/basics/heading.png and b/tests/ref/basics/heading.png differ
diff --git a/tests/ref/basics/list.png b/tests/ref/basics/list.png
index b6b8ed3e6..6db5fb711 100644
Binary files a/tests/ref/basics/list.png and b/tests/ref/basics/list.png differ
diff --git a/tests/ref/basics/terms.png b/tests/ref/basics/terms.png
index e186ec8c8..5c6957954 100644
Binary files a/tests/ref/basics/terms.png and b/tests/ref/basics/terms.png differ
diff --git a/tests/typ/basics/enum.typ b/tests/typ/basics/enum.typ
index 02eb03c25..fd845c2b0 100644
--- a/tests/typ/basics/enum.typ
+++ b/tests/typ/basics/enum.typ
@@ -55,9 +55,10 @@
 + B
 
 ---
-// Lone plus is not an enum.
+// Edge cases.
 +
-No enum
+Empty
++Nope
 
 ---
 // Error: 22-24 invalid numbering pattern
diff --git a/tests/typ/basics/heading.typ b/tests/typ/basics/heading.typ
index d843a2e82..3d6370366 100644
--- a/tests/typ/basics/heading.typ
+++ b/tests/typ/basics/heading.typ
@@ -1,11 +1,5 @@
 // Test headings.
 
----
-#show heading: it => text(blue, it.title)
-
-=
-No heading
-
 ---
 // Different number of equals signs.
 
@@ -50,3 +44,10 @@ multiline.
 = Heading
 ===== Heading 🌍
 #heading(level: 5)[Heading]
+
+---
+// Edge cases.
+#set heading(numbering: "1.")
+=
+Not in heading
+=Nope
diff --git a/tests/typ/basics/list.typ b/tests/typ/basics/list.typ
index 1c111dcb8..3fd9ddb1d 100644
--- a/tests/typ/basics/list.typ
+++ b/tests/typ/basics/list.typ
@@ -1,9 +1,5 @@
 // Test bullet lists.
 
----
--
-No list
-
 ---
 _Shopping list_
 #list[Apples][Potatoes][Juice]
@@ -52,3 +48,9 @@ _Shopping list_
 #set list(marker: [-])
 - Bare hyphen
 - is not a list
+
+---
+// Edge cases.
+-
+Not in list
+-Nope
diff --git a/tests/typ/basics/terms.typ b/tests/typ/basics/terms.typ
index 204defbff..578644233 100644
--- a/tests/typ/basics/terms.typ
+++ b/tests/typ/basics/terms.typ
@@ -1,10 +1,5 @@
 // Test term list.
 
----
-/
-No: list \
-/No: list
-
 ---
 // Test with constructor.
 #terms(
@@ -46,3 +41,12 @@ No: list \
 / A: One letter
 / BB: Two letters
 / CCC: Three letters
+
+---
+/ Term:
+Not in list
+/Nope
+
+---
+// Error: 8 expected colon
+/ Hello