diff --git a/templates/modal.html b/templates/modal.html
index 537d4e0..c30d12f 100644
--- a/templates/modal.html
+++ b/templates/modal.html
@@ -41,7 +41,7 @@ <h1 class="dialog-title">Documents toolbar settings</h1>
                 <div class="_row">
                     <span>Apply to</span>
                     <input data-bind="value: name"/>
-                    <div class="muted">You can apply rules to set of files. Example: *.css</div>
+                    <div class="muted">You can apply rules to set of files. Example: *.css. Use <a href="http://www.w3schools.com/jsref/jsref_obj_regexp.asp">RegExp</a> to construct complex rules.</div>
                 </div>
                 <div class="_row">
                     <input type="checkbox" data-bind="checked: forThisProjectOnly"/>
diff --git a/viewmodels/documents.js b/viewmodels/documents.js
index 889d8fa..b0c49e8 100644
--- a/viewmodels/documents.js
+++ b/viewmodels/documents.js
@@ -220,7 +220,8 @@ define(function(require, exports, module){
 
             return _.find(rules, function(rule){
                 var query = rule.name.replace('*', ''),
-                    currentProject;
+                    currentProject, filterByFile, filterByRegex,
+                    flags, pattern, regex;
 
                 if (rule.project){
                     currentProject = self.getCurrentProjectName();
@@ -229,7 +230,18 @@ define(function(require, exports, module){
                     }
                 }
 
-                return file._name.indexOf(query) >= 0;
+                filterByFile = file._name.indexOf(query) >= 0;
+
+                if (query.indexOf('/') !== -1){
+                    flags = query.replace(/.*\/([gimy]*)$/, '$1');
+                    pattern = query.replace(new RegExp('^/(.*?)/'+flags+'$'), '$1');
+                    regex = new RegExp(pattern, flags);
+                    filterByRegex = !!file._parentPath.match(regex) || !!file._name.match(regex);
+                } else {
+                    filterByRegex = false;
+                }
+
+                return filterByFile || filterByRegex;
             });
         }