Add backslash to ignore chars to avoid backtrack

Author: blakeembrey

index.js

@@ -24,7 +24,7 @@ var PATH_REGEXP = new RegExp([
   // "/:test(\\d+)?" => ["/", "test", "\d+", undefined, "?", undefined]
   // "/route(\\d+)"  => [undefined, undefined, undefined, "\d+", undefined, undefined]
   // "/*"            => ["/", undefined, undefined, undefined, undefined, "*"]
-  '([\\/.])?(?:(?:\\:(\\w+)(?:\\(((?:\\\\.|[^()])+)\\))?|\\(((?:\\\\.|[^()])+)\\))([+*?])?|(\\*))'
+  '([\\/.])?(?:(?:\\:(\\w+)(?:\\(((?:\\\\.|[^\\\\()])+)\\))?|\\(((?:\\\\.|[^\\\\()])+)\\))([+*?])?|(\\*))'
 ].join('|'), 'g')
 
 /**

test.ts

@@ -1910,6 +1910,25 @@ var TESTS: Test[] = [
       [{ foo: 'a', bar: 'b' }, '/a/b']
     ]
   ],
+  [
+    '/:foo(test\\)/bar',
+    null,
+    [
+      {
+        name: 'foo',
+        prefix: '/',
+        delimiter: '/',
+        optional: false,
+        repeat: false,
+        partial: true,
+        asterisk: false,
+        pattern: '[^\\/]+?'
+      },
+      '(test)/bar'
+    ],
+    [],
+    []
+  ],
   [
     '/:remote([\\w-.]+)/:user([\\w-]+)',
     null,