Regexes can follow !

Fixes #197

src/JS.php

@@ -248,7 +248,7 @@ protected function extractRegex()
         // of the RegExp methods (a `\` followed by a variable or value is
         // likely part of a division, not a regex)
         $keywords = array('do', 'in', 'new', 'else', 'throw', 'yield', 'delete', 'return',  'typeof');
-        $before = '(?P<before>[=:,;\}\(\{&\|]|^|'.implode('|', $keywords).')';
+        $before = '(?P<before>[=:,;\}\(\{&\|!]|^|'.implode('|', $keywords).')';
         $propertiesAndMethods = array(
             // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/RegExp#Properties
             'prototype',

tests/js/JSTest.php

@@ -1126,6 +1126,12 @@ function someOtherFunction() {
             'if(!0){console.log(!0)}else{console.log(!1)}',
         );
 
+        // https://github.com/matthiasmullie/minify/issues/197
+        $tests[] = array(
+            'if(!e.allow_html_data_urls&&V.test(k)&&!/^data:image\//i.test(k))return',
+            'if(!e.allow_html_data_urls&&V.test(k)&&!/^data:image\//i.test(k))return',
+        );
+
         // known minified files to help doublecheck changes in places not yet
         // anticipated in these tests
         $files = glob(__DIR__.'/sample/minified/*.js');