FIX: couldn't start a 4-spaces block on the first line of a post

lib/post_creator.rb

@@ -203,7 +203,7 @@ class PostCreator
   end
 
   def setup_post
-    @opts[:raw] = TextCleaner.normalize_whitespaces(@opts[:raw]).strip
+    @opts[:raw] = TextCleaner.normalize_whitespaces(@opts[:raw]).gsub(/\s+\z/, "")
 
     post = @topic.posts.new(raw: @opts[:raw],
                             user: @user,

lib/post_revisor.rb

@@ -19,7 +19,7 @@ class PostRevisor
   def revise!(editor, new_raw, opts = {})
     @editor = editor
     @opts = opts
-    @new_raw = TextCleaner.normalize_whitespaces(new_raw).strip
+    @new_raw = TextCleaner.normalize_whitespaces(new_raw).gsub(/\s+\z/, "")
 
     # TODO this is not in a transaction - dangerous!
     return false unless should_revise?

spec/components/post_creator_spec.rb

@@ -468,7 +468,6 @@ describe PostCreator do
     end
   end
 
-
   describe "suspended users" do
     it "does not allow suspended users to create topics" do
       user = Fabricate(:user, suspended_at: 1.month.ago, suspended_till: 1.month.from_now)
@@ -479,5 +478,10 @@ describe PostCreator do
     end
   end
 
+  it "doesn't strip starting whitespaces" do
+    post = PostCreator.new(user, { title: "testing whitespace stripping", raw: "    <-- whitespaces -->    " }).create
+    post.raw.should == "    <-- whitespaces -->"
+  end
+
 end
 

spec/components/post_revisor_spec.rb

@@ -272,5 +272,12 @@ describe PostRevisor do
         }.to_not change { topic.excerpt }
       end
     end
+
+    it "doesn't strip starting whitespaces" do
+      subject.revise!(post.user, "    <-- whitespaces -->    ")
+      post.reload
+      post.raw.should == "    <-- whitespaces -->"
+    end
+
   end
 end