fix(math): Fix underover error with sub wider than base but no sup

Fix error produced by underover when sub is wider than base and there is no sup
sile-typesetter · Sep 22, 2021 · bc87393 · bc87393
1 parent 75b6748
commit bc87393
Showing 1 changed file with 5 additions and 1 deletion.
diff --git a/packages/math/base-elements.lua b/packages/math/base-elements.lua
@@ -672,10 +672,14 @@ elements.underOver = pl.class({
         widest = self.sub
         a = self.base
         b = self.sup
-      else
+      elseif self.sup then
         widest = self.sup
         a = self.base
         b = self.sub
+      else
+        widest = self.sub
+        a = self.base
+        b = nil
       end
     else
       if self.sup and self.base.width > self.sup.width then