Show warnings from eval

crates/typst-eval/src/lib.rs

@@ -105,7 +105,7 @@ pub fn eval_string(
     span: Span,
     mode: EvalMode,
     scope: Scope,
-) -> SourceResult<Value> {
+) -> SourceResult<(Value, Sink)> {
     let mut root = match mode {
         EvalMode::Code => parse_code(string),
         EvalMode::Markup => parse(string),
@@ -158,7 +158,7 @@ pub fn eval_string(
         bail!(flow.forbidden());
     }
 
-    Ok(output)
+    Ok((output, sink))
 }
 
 /// Evaluate an expression.

crates/typst-library/src/foundations/mod.rs

@@ -297,5 +297,18 @@ pub fn eval(
     for (key, value) in dict {
         scope.bind(key.into(), Binding::new(value, span));
     }
-    (engine.routines.eval_string)(engine.routines, engine.world, &text, span, mode, scope)
+    let (result, sink) = (engine.routines.eval_string)(
+        engine.routines,
+        engine.world,
+        &text,
+        span,
+        mode,
+        scope,
+    )?;
+
+    for warning in sink.warnings() {
+        engine.sink.warn(warning);
+    }
+
+    Ok(result)
 }

crates/typst-library/src/model/bibliography.rs

@@ -1004,7 +1004,8 @@ impl ElemRenderer<'_> {
             EvalMode::Math,
             Scope::new(),
         )
-        .map(Value::display)
+        // TODO: propagate warnings
+        .map(|(result, _sink)| Value::display(result))
         .unwrap_or_else(|_| TextElem::packed(math).spanned(self.span))
     }
 

crates/typst-library/src/routines.rs

@@ -59,7 +59,7 @@ routines! {
         span: Span,
         mode: EvalMode,
         scope: Scope,
-    ) -> SourceResult<Value>
+    ) -> SourceResult<(Value, Sink)>
 
     /// Call the closure in the context with the arguments.
     fn eval_closure(

tests/suite/foundations/eval.typ

@@ -52,3 +52,9 @@ _Tiger!_
 #eval(mode: "math", "f(a) = cases(a + b\, space space x >= 3,a + b\, space space x = 5)")
 
 $f(a) = cases(a + b\, space space x >= 3,a + b\, space space x = 5)$
+
+--- issue-6067-eval-warnings ---
+// Test that eval shows warnings from the executed code.
+// Warning: 7-11 no text within stars
+// Hint: 7-11 using multiple consecutive stars (e.g. **) has no additional effect
+#eval("**", mode: "markup")