FIX: word_count wasn't working with non-latin sentences

lib/post_creator.rb

@@ -172,7 +172,7 @@ class PostCreator
   def self.before_create_tasks(post)
     set_reply_info(post)
 
-    post.word_count = post.raw.scan(/\w+/).size
+    post.word_count = post.raw.scan(/[[:word:]]+/).size
     post.post_number ||= Topic.next_post_number(post.topic_id, post.reply_to_post_number.present?)
 
     cooking_options = post.cooking_options || {}

lib/post_revisor.rb

@@ -229,7 +229,7 @@ class PostRevisor
     end
 
     @post.last_editor_id = @editor.id
-    @post.word_count     = @fields[:raw].scan(/\w+/).size if @fields.has_key?(:raw)
+    @post.word_count     = @fields[:raw].scan(/[[:word:]]+/).size if @fields.has_key?(:raw)
     @post.self_edits    += 1 if self_edit?
 
     remove_flags_and_unhide_post

spec/components/post_creator_spec.rb

@@ -595,12 +595,12 @@ describe PostCreator do
 
   describe "word_count" do
     it "has a word count" do
-      creator = PostCreator.new(user, title: 'some inspired poetry for a rainy day', raw: 'mary had a little lamb, little lamb, little lamb. mary had a little lamb')
+      creator = PostCreator.new(user, title: 'some inspired poetry for a rainy day', raw: 'mary had a little lamb, little lamb, little lamb. mary had a little lamb. Здравствуйте')
       post = creator.create
-      expect(post.word_count).to eq(14)
+      expect(post.word_count).to eq(15)
 
       post.topic.reload
-      expect(post.topic.word_count).to eq(14)
+      expect(post.topic.word_count).to eq(15)
     end
   end
 

spec/components/post_revisor_spec.rb

@@ -278,14 +278,14 @@ describe PostRevisor do
 
     describe 'with a new body' do
       let(:changed_by) { Fabricate(:coding_horror) }
-      let!(:result) { subject.revise!(changed_by, { raw: "lets update the body" }) }
+      let!(:result) { subject.revise!(changed_by, { raw: "lets update the body. Здравствуйте" }) }
 
       it 'returns true' do
         expect(result).to eq(true)
       end
 
       it 'updates the body' do
-        expect(post.raw).to eq("lets update the body")
+        expect(post.raw).to eq("lets update the body. Здравствуйте")
       end
 
       it 'sets the invalidate oneboxes attribute' do
@@ -306,9 +306,9 @@ describe PostRevisor do
       end
 
       it "updates the word count" do
-        expect(post.word_count).to eq(4)
+        expect(post.word_count).to eq(5)
         post.topic.reload
-        expect(post.topic.word_count).to eq(4)
+        expect(post.topic.word_count).to eq(5)
       end
 
       context 'second poster posts again quickly' do