Touch up docs

2 files changed, 11 insertions, 9 deletions

diff --git a/src/eval/library.rs b/src/eval/library.rs
index a92d8bd1..13825d7e 100644
--- a/src/eval/library.rs
+++ b/src/eval/library.rs
@@ -91,13 +91,13 @@ pub struct LangItems {
     pub math_attach: fn(
         base: Content,
         // Positioned smartly.
-        top: Option<Content>,
-        bottom: Option<Content>,
+        t: Option<Content>,
+        b: Option<Content>,
         // Fixed positions.
-        topleft: Option<Content>,
-        bottomleft: Option<Content>,
-        topright: Option<Content>,
-        bottomright: Option<Content>,
+        tl: Option<Content>,
+        bl: Option<Content>,
+        tr: Option<Content>,
+        br: Option<Content>,
     ) -> Content,
     /// A base with an accent: `arrow(x)`.
     pub math_accent: fn(base: Content, accent: char) -> Content,
diff --git a/src/eval/mod.rs b/src/eval/mod.rs
index e8e1af51..68163bf6 100644
--- a/src/eval/mod.rs
+++ b/src/eval/mod.rs
@@ -48,8 +48,9 @@ use unicode_segmentation::UnicodeSegmentation;
 use crate::diag::{
     bail, error, At, SourceError, SourceResult, StrResult, Trace, Tracepoint,
 };
+use crate::model::ShowableSelector;
 use crate::model::{
-    Content, Introspector, Label, Recipe, Selector, StabilityProvider, Styles, Transform,
+    Content, Introspector, Label, Recipe, StabilityProvider, Styles, Transform,
     Unlabellable, Vt,
 };
 use crate::syntax::ast::AstNode;
@@ -1428,8 +1429,9 @@ impl Eval for ast::ShowRule {
     fn eval(&self, vm: &mut Vm) -> SourceResult<Self::Output> {
         let selector = self
             .selector()
-            .map(|sel| sel.eval(vm)?.cast::<Selector>().at(sel.span()))
-            .transpose()?;
+            .map(|sel| sel.eval(vm)?.cast::<ShowableSelector>().at(sel.span()))
+            .transpose()?
+            .map(|selector| selector.0);
 
         let transform = self.transform();
         let span = transform.span();