Resolve #1141: Add hint for missing numbering, improve hint format consistency (#1456)

library/src/meta/reference.rs

@@ -180,7 +180,7 @@ impl Show for RefElem {
         let numbering = refable
             .numbering()
             .ok_or_else(|| {
-                eco_format!("cannot reference {} without numbering", elem.func().name())
+                eco_format!("cannot reference {0} without numbering - did you mean to use `#set {0}(numbering: \"1.\")`?", elem.func().name())
             })
             .at(span)?;
 

src/eval/cast.rs

@@ -242,7 +242,7 @@ impl CastInfo {
             if parts.iter().any(|p| p == "length");
             if !matching_type;
             then {
-                write!(msg, ": a length needs a unit – did you mean {i}pt?").unwrap();
+                write!(msg, ": a length needs a unit - did you mean {i}pt?").unwrap();
             }
         };
 

src/eval/scope.rs

@@ -72,7 +72,7 @@ impl<'a> Scopes<'a> {
 #[cold]
 fn unknown_variable(var: &str) -> EcoString {
     if var.contains('-') {
-        eco_format!("unknown variable: {} – if you meant to use subtraction, try adding spaces around the minus sign.", var)
+        eco_format!("unknown variable: {} - if you meant to use subtraction, try adding spaces around the minus sign.", var)
     } else {
         eco_format!("unknown variable: {}", var)
     }

src/syntax/parser.rs

@@ -1060,7 +1060,7 @@ fn for_loop(p: &mut Parser) {
     p.assert(SyntaxKind::For);
     pattern(p);
     if p.at(SyntaxKind::Comma) {
-        p.expected("keyword `in`. did you mean to use a destructuring pattern?");
+        p.expected("keyword `in` - did you mean to use a destructuring pattern?");
         if !p.eat_if(SyntaxKind::Ident) {
             p.eat_if(SyntaxKind::Underscore);
         }

tests/typ/compiler/for.typ

@@ -92,7 +92,7 @@
 
 ---
 // Destructuring without parentheses.
-// Error: 7 expected keyword `in`. did you mean to use a destructuring pattern?
+// Error: 7 expected keyword `in` - did you mean to use a destructuring pattern?
 #for k, v in (a: 4, b: 5) {
   dont-care
 }

tests/typ/compiler/hint.typ

@@ -2,7 +2,7 @@
 // Ref: false
 
 ---
-// Error: 1:17-1:19 expected length, found integer: a length needs a unit – did you mean 12pt?
+// Error: 1:17-1:19 expected length, found integer: a length needs a unit - did you mean 12pt?
 #set text(size: 12)
 
 ---
@@ -11,12 +11,17 @@
   a = 1-a
   a = a -1
 
-  // Error: 7-10 unknown variable: a-1 – if you meant to use subtraction, try adding spaces around the minus sign.
+  // Error: 7-10 unknown variable: a-1 - if you meant to use subtraction, try adding spaces around the minus sign.
   a = a-1
 }
 
 ---
 #{
-  // Error: 3-6 unknown variable: a-1 – if you meant to use subtraction, try adding spaces around the minus sign.
+  // Error: 3-6 unknown variable: a-1 - if you meant to use subtraction, try adding spaces around the minus sign.
   a-1 = 2
 }
+
+---
+= Heading <intro>
+// Error: 1:20-1:26 cannot reference heading without numbering - did you mean to use `#set heading(numbering: "1.")`?
+Can not be used as @intro