implement and use Draft.valid?

lib/jekyll/draft.rb

@@ -5,6 +5,14 @@ module Jekyll
     # Valid post name regex (no date)
     MATCHER = /^(.*)(\.[^.]+)$/
 
+    # Draft name validator. Draft filenames must be like:
+    # my-awesome-post.textile
+    #
+    # Returns true if valid, false if not.
+    def self.valid?(name)
+      name =~ MATCHER
+    end
+
     # Extract information from the post filename.
     #
     # name - The String filename of the post file.

lib/jekyll/site.rb

@@ -212,7 +212,7 @@ module Jekyll
 
       # first pass processes, but does not yet render post content
       entries.each do |f|
-        if Post.valid?(f)
+        if Draft.valid?(f)
           post = Draft.new(self, self.source, dir, f)
 
           if post.published && (self.future || post.date <= self.time)