add workaround for confluence format while we fix 4113

Author: cscheid

src/command/render/pandoc.ts

@@ -707,9 +707,13 @@ export async function runPandoc(
     formatFilterParams["custom-writer"] = allDefaults.to;
     allDefaults.to = resourcePath("filters/customwriter/customwriter.lua");
   }
-  if (allDefaults.writer?.match(/[.]lua$/)) {
-    formatFilterParams["custom-writer"] = allDefaults.writer;
-    allDefaults.writer = resourcePath("filters/customwriter/customwriter.lua");
+  if (Deno.env.get("QUARTO_ALLENMANNING_WORKAROUND_CONFLUENCE") === undefined) {
+    if (allDefaults.writer?.match(/[.]lua$/)) {
+      formatFilterParams["custom-writer"] = allDefaults.writer;
+      allDefaults.writer = resourcePath(
+        "filters/customwriter/customwriter.lua",
+      );
+    }
   }
 
   // set parameters required for filters (possibily mutating all of it's arguments