diff --git a/index.js b/index.js
index 7425bdf..3bb9636 100644
--- a/index.js
+++ b/index.js
@@ -22,11 +22,20 @@ const { utils } = lib;
 class Comments extends Emitter {
   constructor(options = {}) {
     super();
-    this.options = options;
+    this.options = Object.assign({commentStart: '/*'}, options);
     this.comments = [];
     this.parsers = {};
     this.tokens = [];
     this.ast = {};
+
+    console.log(this.options)
+
+    if (this.options.commentStart) {
+      this.options.commentStart = this.options.commentStart.replace(/([\*\/\(\)])/g, "\\$1")
+    }
+    if (this.options.commentEnd) {
+      this.options.commentEnd = this.options.commentEnd.replace(/([\*\/\(\)])/g, "\\$1")
+    }
   }
 
   /**
@@ -45,7 +54,9 @@ class Comments extends Emitter {
   tokenize(input, options) {
     let opts = Object.assign({}, this.options, options);
     // this only needs to be roughly correct. the tokenizer is smarter
-    let isComment = str => /^(\s*\/\*|\*\s*@| {4,})/gm.test(str);
+    // let isComment = str => /^(\s*\/\*|\*\s*@| {4,})/gm.test(str);
+    var re = new RegExp("^(\\s*" + opts.commentStart + "|\\*\\s*@| {4,})", "gm");
+    let isComment = str => re.test(str);
     if (opts.stripStars === void 0 && input && !isComment(input)) {
       opts.stripStars = false;
     }
diff --git a/lib/utils.js b/lib/utils.js
index 139b5ce..1d9cc68 100644
--- a/lib/utils.js
+++ b/lib/utils.js
@@ -78,8 +78,8 @@ exports.last = (arr = [], n = 1) => arr[arr.length - n];
  * @return {Boolean}
  */
 
-exports.isProtectedComment = str => /^\/\*{1,2}\s*!/.test(str);;
-
+// exports.isProtectedComment = str => /^\/\*{1,2}\s*!/.test(str);;
+exports.isProtectedComment = str => /^\(\*{1,2}\s*!/.test(str);;
 /**
  * Returns true if the given comment `str` is a config comment that contains
  * `eslint`, `global`, `jshint`, `jslint` etc.
@@ -103,7 +103,8 @@ exports.isConfigComment = (str, names = '[ej]s[hl]int') => {
  */
 
 exports.isValidBlockComment = (comment, options = {}) => {
-  let regex = options.allowSingleStar ? /^\s*\/\*/ : /^\s*\/\*\*/;
+  // let regex = options.allowSingleStar ? /^\s*\/\*/ : /^\s*\/\*\*/;
+  let regex = options.allowSingleStar ? new RegExp("/^\\s*" + options.commentStart + "/") : new RegExp("/^\\s*" + options.commentStart + "\\*/");
   if (typeof comment === 'string') {
     return regex.test(comment);
   }
@@ -111,9 +112,9 @@ exports.isValidBlockComment = (comment, options = {}) => {
     case 'block':
     case 'commentblock':
     case 'blockcomment':
-      if (!options.allowSingleStar) {
-        return comment.raw[0] === '*';
-      }
+      // if (!options.allowSingleStar) {
+      //   return comment.raw[0] === '*';
+      // }
       return true;
     default: {
       return false;