diff --git a/project.clj b/project.clj
index 7dfa9bf..880bc08 100644
--- a/project.clj
+++ b/project.clj
@@ -1,4 +1,4 @@
-(defproject cryogen-core "0.1.12"
+(defproject cryogen-core "0.1.13-SNAPSHOT"
   :description "Cryogen's compiler"
   :url "https://github.com/lacarmen/cryogen-core"
   :license {:name "Eclipse Public License"
diff --git a/src/cryogen_core/io.clj b/src/cryogen_core/io.clj
index e8e90df..e554111 100644
--- a/src/cryogen_core/io.clj
+++ b/src/cryogen_core/io.clj
@@ -4,6 +4,15 @@
 
 (def public "resources/public")
 
+(defn re-filter [bool-fn re & other-res]
+  (let [res (conj other-res re)]
+    (reify java.io.FilenameFilter
+      (accept [this _ name]
+        (bool-fn (some #(re-find % name) res))))))
+
+(def match-re-filter (partial re-filter some?))
+(def reject-re-filter (partial re-filter nil?))
+
 (defn get-resource [resource]
   (-> resource io/resource io/file))
 
@@ -33,7 +42,17 @@
   (doseq [asset (fs/find-files "resources/templates/md" #".+(jpg|jpeg|png|gif)")]
     (io/copy asset (io/file (str public blog-prefix "/img/" (.getName asset))))))
 
-(defn copy-resources [{:keys [blog-prefix resources]}]
+(defn copy-dir [src target ignored-files]
+  (fs/mkdirs target)
+  (let [filename-filter (apply reject-re-filter ignored-files)
+        files (.listFiles (io/file src) filename-filter)]
+    (doseq [f files]
+      (let [out (io/file target (.getName f))]
+        (if (.isDirectory f)
+          (copy-dir f out ignored-files)
+          (io/copy f out))))))
+
+(defn copy-resources [{:keys [blog-prefix resources ignored-files]}]
   (doseq [resource resources]
     (let [src (str "resources/templates/" resource)
           target (str public blog-prefix "/" resource)]
@@ -41,6 +60,6 @@
         (not (.exists (io/file src)))
         (throw (IllegalArgumentException. (str "resource " src " not found")))
         (.isDirectory (io/file src))
-        (fs/copy-dir src target)
+        (copy-dir src target ignored-files)
         :else
         (fs/copy src target)))))
diff --git a/src/cryogen_core/sass.clj b/src/cryogen_core/sass.clj
index 6b3770a..93d2c2c 100644
--- a/src/cryogen_core/sass.clj
+++ b/src/cryogen_core/sass.clj
@@ -1,23 +1,18 @@
 (ns cryogen-core.sass
   (:require [clojure.java.shell :refer [sh]]
             [clojure.java.io :as io]
-            [cryogen-core.io :refer [ignore]]))
+            [cryogen-core.io :refer [ignore match-re-filter]]))
 
 (defn sass-installed?
   "Checks for the installation of Sass."
   []
   (= 0 (:exit (sh "sass" "--version"))))
 
-(defn re-filter [re]
-  (reify java.io.FilenameFilter
-    (accept [this _ name]
-      (not (nil? (re-find re name))))))
-
 (defn find-sass-files
   "Given a Diretory, gets files, Filtered to those having scss or sass
   extention. Ignores files matching any ignored regexps."
   [dir ignored-files]
-  (let [filename-filter (re-filter #"(?i:s[ca]ss$)")]
+  (let [filename-filter (match-re-filter #"(?i:s[ca]ss$)")]
     (->> (.listFiles (io/file dir) filename-filter)
          (filter #(not (.isDirectory %)))
          (filter (ignore ignored-files))