Refactor handout.typ

lib/typst/local/handout/0.1.0/lib.typ

@@ -45,6 +45,16 @@
   show list: set block(spacing: 0.5em, below: 1em)
   set heading(numbering: (..nums) => nums.pos().at(0))
 
+  show ref: it => {
+    import "object.typ": ref_obj
+
+    // Custom impl for object references
+    let x = ref_obj(it)
+    if (x != none) { return x }
+
+    // Use default `ref` implementation otherwise
+    return it
+  }
 
   set list(
     tight: false,
@@ -60,16 +70,6 @@
     ]
   }
 
-  show ref: it => {
-    // Custom impl for object references
-    let x = _ref_obj(it)
-    if (x != none) { return x }
-
-    // Use default `ref` implementation otherwise
-    return it
-  }
-
-
   //
   // Begin content
   //

lib/typst/local/handout/0.1.0/object.typ

@@ -40,7 +40,6 @@
   // This can be viewed directly with `#context query(<label>).first().value`,
   // Or referenced with `@label` (we define a custom renderer for this metadata later)
   if label_name != none {
-    //let label_name = "obj:" + label_name
     let meta = (
       "obj_meta_ref_kind": kind,
       // "obj_content": obj_content,
@@ -51,9 +50,9 @@
   }
 }
 
-// `ref` implementation for object meta-references,
+// `ref` implementation for object meta-references.
-// see `show: ref`.
+// Returns `none` if `it` is not object metadata.
-#let _ref_obj(it) = {
+#let ref_obj(it) = {
   let magic_key = "obj_meta_ref_kind"
   if not (
     it.element != none
@@ -73,7 +72,7 @@
 
   // Produces text like "Problem 2",
   // which takes you to the referenced object when clicked.
-  link(v.label, [#obj_type #obj_count])
+  return link(v.label, [#obj_type #obj_count])
 }
 
 /// Factory function for objects.

src/Advanced/Tropical Polynomials/parts/02 cubic.typ

@@ -153,7 +153,7 @@ What are the roots of the following polynomial?
 #v(1fr)
 #pagebreak() // MARK: page
 
-#problem()
+#problem(label: "findci")
 If
 $
   f(x) = c_0 #tp c_1 x #tp c_2 x^2 #tp ... #tp c_n x^n
@@ -183,7 +183,7 @@ Find a formula for each $C_i$ in terms of $c_0, c_1, ..., c_n$.
 
 
 #problem()
-With the same setup as the previous problem, \
+With the same setup as @findci, \
 find formulas for the roots $r_1, r_2, ..., r_n$.
 
 #solution([