diff --git a/Build/build-reject-domainset.ts b/Build/build-reject-domainset.ts
index 1b618502..224f7373 100644
--- a/Build/build-reject-domainset.ts
+++ b/Build/build-reject-domainset.ts
@@ -82,9 +82,9 @@ export const buildRejectDomainSet = task(import.meta.main, import.meta.path)(asy
       const [type, value] = line.split(',');
 
       if (type === 'DOMAIN-KEYWORD') {
-        domainKeywordsSet.add(value.trim());
+        domainKeywordsSet.add(value);
       } else if (type === 'DOMAIN-SUFFIX') {
-        domainSets.add(`.${value.trim()}`); // Add to domainSets for later deduplication
+        domainSets.add('.' + value); // Add to domainSets for later deduplication
       }
     }
 
diff --git a/Build/trim-source.ts b/Build/trim-source.ts
new file mode 100644
index 00000000..ea23f697
--- /dev/null
+++ b/Build/trim-source.ts
@@ -0,0 +1,47 @@
+import path from 'path';
+import { fdir as Fdir } from 'fdir';
+import { readFileByLine } from './lib/fetch-text-by-line';
+
+const sourceDir = path.resolve(import.meta.dir, '../Source');
+
+(async () => {
+  const promises: Array<Promise<unknown>> = [];
+
+  const paths = await new Fdir()
+    .withFullPaths()
+    // .exclude((dirName, dirPath) => {
+    //   if (dirName === 'domainset' || dirName === 'ip' || dirName === 'non_ip') {
+    //     return false;
+    //   }
+    //   console.error(picocolors.red(`[build-comman] Unknown dir: ${dirPath}`));
+    //   return true;
+    // })
+    .filter((filepath, isDirectory) => {
+      if (isDirectory) return true;
+
+      const extname = path.extname(filepath);
+      if (extname === '.js' || extname === '.ts') {
+        return false;
+      }
+
+      return true;
+    })
+    .crawl(sourceDir)
+    .withPromise();
+
+  for (let i = 0, len = paths.length; i < len; i++) {
+    const fullPath = paths[i];
+    promises.push(trimFileLines(fullPath));
+  }
+
+  return Promise.all(promises);
+})();
+
+async function trimFileLines(file: string) {
+  let result = '';
+  for await (const line of readFileByLine(file)) {
+    result += line.trim() + '\n';
+  }
+
+  return Bun.write(file, result);
+}