Fix and simplify reference supplements

- Fixes #873 by properly handling `none` supplement for`ref`.
- Fixes #523 by adding a `supplement` parameter to `math.equation`
- In the future, we can remove supplement functions in favor of show-set rules with fine-grained selectors. Currently, this is not possible because show-set + synthesis doesn't play well together

1 files changed, 12 insertions, 0 deletions

diff --git a/src/model/styles.rs b/src/model/styles.rs
index 2f33ef92..7ebb766c 100644
--- a/src/model/styles.rs
+++ b/src/model/styles.rs
@@ -463,6 +463,12 @@ impl Cast for LocatableSelector {
     }
 }
 
+impl From<LocatableSelector> for Value {
+    fn from(value: LocatableSelector) -> Self {
+        value.0.into()
+    }
+}
+
 /// A selector that can be used with show rules.
 ///
 /// Hopefully, this is made obsolete by a more powerful showing mechanism in the
@@ -518,6 +524,12 @@ impl Cast for ShowableSelector {
     }
 }
 
+impl From<ShowableSelector> for Value {
+    fn from(value: ShowableSelector) -> Self {
+        value.0.into()
+    }
+}
+
 /// A show rule transformation that can be applied to a match.
 #[derive(Clone, PartialEq, Hash)]
 pub enum Transform {