Ensure that column options are forwarded to widgets and so on

```{r}
#| label: fig-widget
#| fig-cap: "An htmlwidget figure"
#| fig-column: margin
#| out-width: 100%
#| echo: fenced

plotly::plot_ly(data = cars,
                type = "scatter",
                mode = "markers",
                x = ~speed,
                y = ~dist)
```

Author: dragonstyle

src/resources/filters/layout/columns-preprocess.lua

@@ -84,9 +84,18 @@ function resolveColumnClassesForCodeCell(el)
           -- no known children were discovered, apply the column classes to the cell output display itself
           if not forwarded then 
 
-            local colClasses = computeClassesForScopedColumns(el)
-            local capClasses = computeClassesForScopedCaption(el)
-            applyClasses(colClasses, capClasses, el, childEl, childEl)
+            -- figure out whether there are tables inside this element
+            -- if so, use tbl scope, otherwise treat as a fig
+            local tableCount = countTables(el)
+            local scope = 'fig'
+            if tableCount > 0 then
+              scope = 'tbl'
+            end
+
+            -- forward the classes from the proper scope onto the cell-output-display div
+            local colClasses = computeClassesForScopedColumns(el, scope)
+            local capClasses = computeClassesForScopedCaption(el, scope)
+            applyClasses(colClasses, capClasses, el, childEl, childEl, scope)
 
           end
         end

src/resources/filters/layout/html.lua

@@ -189,6 +189,14 @@ function renderHtmlFigure(el, render)
   figureDiv.attr.classes:insert("quarto-figure")
   figureDiv.attr.classes:insert("quarto-figure-" .. align)
 
+  -- also forward any column or caption classes
+  local currentClasses = el.attr.classes
+  for _,k in pairs(currentClasses) do
+    if isCaptionClass(k) or isColumnClass(k) then
+      figureDiv.attr.classes:insert(k)
+    end
+  end
+
   -- begin figure
   figureDiv.content:insert(pandoc.RawBlock("html", "<figure>"))
 

src/resources/filters/layout/layout.lua

@@ -39,6 +39,7 @@ import("../common/format.lua")
 import("../common/refs.lua")
 import("../common/layout.lua")
 import("../common/figures.lua")
+import("../common/tables.lua")
 import("../common/options.lua")
 import("../common/params.lua")
 import("../common/meta.lua")