Add renderers tableCaptionContext* to extensions.pipe_tables writer

markdown.dtx

@@ -29567,8 +29567,13 @@ M.extensions.pipe_tables = function(table_captions, table_attributes) -- luachec
 %
 % \end{markdown}
 %  \begin{macrocode}
-      function self.table(rows, caption)
+      function self.table(rows, caption, attributes)
         if not self.is_writing then return "" end
+        if attributes ~= nil then
+          table.insert(buf,
+                       "\\markdownRendererTableAttributeContextBegin\n")
+          table.insert(buf, self.attributes(attributes))
+        end
         local buffer = {"\\markdownRendererTable{",
           caption or "", "}{", #rows - 1, "}{", #rows[1], "}"}
         local temp = rows[2] -- put alignments on the first row
@@ -29587,6 +29592,10 @@ M.extensions.pipe_tables = function(table_captions, table_attributes) -- luachec
           end
           table.insert(buffer, "}")
         end
+        if attributes ~= nil then
+          table.insert(buf,
+                       "\\markdownRendererTableAttributeContextEnd{}")
+        end
         return buffer
       end
     end, extend_reader = function(self)