Automatically display value in more places

src/eval/mod.rs

@@ -354,7 +354,7 @@ fn eval_code(
                     break;
                 }
 
-                let tail = to_content(eval_code(ctx, scp, exprs)?).at(span)?;
+                let tail = eval_code(ctx, scp, exprs)?.display();
                 Value::Content(tail.styled_with_map(styles))
             }
             Expr::Show(show) => {
@@ -364,12 +364,12 @@ fn eval_code(
                     break;
                 }
 
-                let tail = to_content(eval_code(ctx, scp, exprs)?).at(span)?;
+                let tail = eval_code(ctx, scp, exprs)?.display();
                 Value::Content(tail.styled_with_entry(entry))
             }
             Expr::Wrap(wrap) => {
-                let tail = to_content(eval_code(ctx, scp, exprs)?).at(span)?;
+                let tail = eval_code(ctx, scp, exprs)?;
-                scp.top.def_mut(wrap.binding().take(), Value::Content(tail));
+                scp.top.def_mut(wrap.binding().take(), tail);
                 wrap.body().eval(ctx, scp)?
             }
 
@@ -386,14 +386,6 @@ fn eval_code(
     Ok(output)
 }
 
-/// Extract content from a value.
-fn to_content(value: Value) -> StrResult<Content> {
-    let ty = value.type_name();
-    value
-        .cast()
-        .map_err(|_| format!("expected remaining block to yield content, found {ty}"))
-}
-
 impl Eval for ContentBlock {
     type Output = Content;
 

src/library/layout/page.rs

@@ -159,7 +159,7 @@ impl Marginal {
             Self::Content(content) => Some(content.clone()),
             Self::Func(func, span) => {
                 let args = Args::from_values(*span, [Value::Int(page as i64)]);
-                func.call(ctx, args)?.cast().at(*span)?
+                Some(func.call(ctx, args)?.display())
             }
         })
     }

src/library/structure/list.rs

@@ -217,7 +217,7 @@ impl Label {
             Self::Content(content) => content.clone(),
             Self::Func(func, span) => {
                 let args = Args::from_values(*span, [Value::Int(number as i64)]);
-                func.call(ctx, args)?.cast().at(*span)?
+                func.call(ctx, args)?.display()
             }
         })
     }

src/model/recipe.rs

@@ -1,7 +1,7 @@
 use std::fmt::{self, Debug, Formatter};
 
 use super::{Content, Interruption, NodeId, Show, ShowNode, StyleChain, StyleEntry};
-use crate::diag::{At, TypResult};
+use crate::diag::TypResult;
 use crate::eval::{Args, Func, Regex, Value};
 use crate::library::structure::{EnumNode, ListNode};
 use crate::syntax::Span;
@@ -87,7 +87,7 @@ impl Recipe {
             Args::from_values(self.span, [arg()])
         };
 
-        self.func.call(ctx, args)?.cast().at(self.span)
+        Ok(self.func.call(ctx, args)?.display())
     }
 
     /// What kind of structure the property interrupts.

tests/typ/structure/enum.typ

@@ -45,6 +45,11 @@
    [Red], [Green], [Blue],
 )
 
+---
+#set enum(label: n => n > 1)
+. A
+. B
+
 ---
 // Lone dot is not a list.
 .
@@ -56,8 +61,3 @@
 ---
 // Error: 18-24 invalid pattern
 #set enum(label: "(())")
-
----
-// Error: 18-28 expected content, found boolean
-#set enum(label: n => false)
-. A

tests/typ/style/show-node.typ

@@ -76,7 +76,6 @@ Another text.
 }
 
 ---
-// Error: 18-22 expected content, found integer
 #show heading as 1234
 = Heading
 

tests/typ/style/wrap.typ

@@ -25,8 +25,8 @@ A [_B #wrap c in [*#c*]; C_] D
 Forest
 
 ---
+// Ok, whatever.
 {
-  // Error: 3-24 expected remaining block to yield content, found integer
   wrap body in 2 * body
   2
 }