diff --git a/lib/fwprettier.js b/lib/fwprettier.js
index a4434f11e..897458ac4 100644
--- a/lib/fwprettier.js
+++ b/lib/fwprettier.js
@@ -4,35 +4,40 @@ const fs = require("fs");
 
 let promise = Promise.resolve();
 let out = "";
-let code;
+let code, prettierrc;
+
+function appendCode(code) {
+  out += code.replace(/\/\*|\*\//g, "");
+}
+
 createInterface({
   input: fs.createReadStream(process.argv[2]),
   crlfDelay: Infinity,
 })
   .on("line", function (line) {
-    if (/^@[$o]/.test(line)) code = [];
-    else if (line.startsWith("@}")) {
+    const m = line.match(/^@[$o]@<.*?@>.*?@\{(@!(.*)$)?/);
+    if (m) {
+      code = [];
+      prettierrc = m[2] ? JSON.parse(m[2]) : {};
+    } else if (line.startsWith("@}")) {
       const unformatted = code.join("");
-      if (code.length < 2)
-        promise = promise.then(function () {
-          out += unformatted.replace(/\/\*|\*\//g, "");
-        });
-      else
+      if (!prettierrc) promise = promise.then(() => appendCode(unformatted));
+      else {
+        const prettierOptions = {
+          filepath: ".js",
+          trailingComma: "none",
+          ...prettierrc,
+        };
         promise = promise
-          .then(() =>
-            format(unformatted, { filepath: ".js", trailingComma: "none" }),
-          )
-          .then(
-            function (formatted) {
-              out += formatted.replace(/\/\*|\*\//g, "");
-            },
-            function () {
-              out += unformatted.replace(/\/\*|\*\//g, "");
-            },
-          );
+          .then(() => format(unformatted, prettierOptions))
+          .then(appendCode, function (err) {
+            console.error(err.message, unformatted);
+            appendCode(unformatted);
+          });
+      }
       code = undefined;
     } else if (code) {
-      code.push(line.replace(/@<.*?@>(@\(.*@\))?/g, "/*$&*/") + "\n");
+      code.push(line.replace(/@<.*?@>(@\(.*?@\))?/g, "/*$&*/") + "\n");
       return;
     }
     promise = promise.then(function () {
diff --git a/lib/number.js b/lib/number.js
index 3426c224e..b5e275c82 100644
--- a/lib/number.js
+++ b/lib/number.js
@@ -84,7 +84,9 @@ class Number {
               lineno++;
               if (this.skip(line)) return;
               if (this.meta.funnelweb)
-                line = line.replace(/^@[$o]@\<(.*?)@\>.*?@\{/, " ##fwisec $1");
+                line = line
+                  .replace(/@!.*$/, "")
+                  .replace(/^@[$o]@\<(.*?)@\>.*?@\{/, " ##fwisec $1");
               try {
                 for (
                   var m, regex = /\[.*?\]\{id=(.*?)\}/g;
@@ -195,6 +197,7 @@ class Number {
                     line = line
                       .replace(/^@!\{/, "::: funnelweb")
                       .replace(/^@!\}/, ":::")
+                      .replace(/@!.*$/, "")
                       .replace(
                         /^@[$o]@\<(.*?)@\>.*?@\{/,
                         function (m, p) {