Enable :stem: latexmath if math is encountered

Author: dragonstyle

src/resources/filters/quarto-post/render-asciidoc.lua

@@ -12,7 +12,16 @@ function renderAsciidoc()
     return {}
   end
 
+  local hasMath = false
+
   return {
+    Meta = function(meta)
+      meta['asciidoc-stem'] = 'latexmath'
+      return meta
+    end,
+    Math = function(el)
+      hasMath = true;
+    end,
     Cite = function(el) 
       -- If quarto is going to be processing the cites, go ahead and convert
       -- them to a native cite

src/resources/formats/asciidoc/pandoc/template.asciidoc

@@ -21,6 +21,9 @@ $endif$
 $if(asciidoc-doctype)$
 :doctype: $asciidoc-doctype$
 $endif$
+$if(asciidoc-stem)$
+:stem: $asciidoc-stem$
+$endif$
 
 $endif$
 $if(abstract)$