refactor: move show-strong-with-alert to per-slide level and fix #123

Author: OrangeX4

src/core.typ

@@ -1685,8 +1685,16 @@
     self = utils.merge-dicts(self, config)
   }
   assert(bodies.named().len() == 0, message: "unexpected named arguments:" + repr(bodies.named().keys()))
-  let setting-with-auto-offset-for-heading(body) = {
+  let setting-fn(body) = {
     set heading(offset: self.at("slide-level", default: 0)) if self.at("auto-offset-for-heading", default: true)
+    show: body => {
+      if self.at("show-strong-with-alert", default: true) {
+        show strong: self.methods.alert.with(self: self)
+        body
+      } else {
+        body
+      }
+    }
     setting(body)
   }
   let composer-with-side-by-side(..args) = {
@@ -1810,7 +1818,7 @@
     )
     header = page-preamble(self) + header
     set page(..(self.page + page-extra-args + (header: header, footer: footer)))
-    setting-with-auto-offset-for-heading(subslide-preamble(self) + composer-with-side-by-side(..conts))
+    setting-fn(subslide-preamble(self) + composer-with-side-by-side(..conts))
   } else {
     // render all the subslides
     let result = ()
@@ -1825,7 +1833,7 @@
       // update the counter in the first subslide only
       result.push({
         set page(..(self.page + page-extra-args + (header: new-header, footer: footer)))
-        setting-with-auto-offset-for-heading(subslide-preamble(self) + composer-with-side-by-side(..conts))
+        setting-fn(subslide-preamble(self) + composer-with-side-by-side(..conts))
       })
     }
     // return the result

src/slides.typ

@@ -34,15 +34,6 @@
     body => body
   }
 
-  show: body => {
-    if self.at("show-strong-with-alert", default: true) {
-      show strong: self.methods.alert.with(self: self)
-      body
-    } else {
-      body
-    }
-  }
-
   show: body => {
     if self.at("scale-list-items", default: none) != none {
       magic.scale-list-items(scale: self.at("scale-list-items", default: none), body)