Add commenter:<any|none> metatags.

app/logical/post_query_builder.rb

@@ -238,7 +238,13 @@ class PostQueryBuilder
 
     if q[:commenter_ids]
       q[:commenter_ids].each do |commenter_id|
-        relation = relation.where("posts.id IN (?)", Comment.unscoped.where("creator_id = ?", commenter_id).select("post_id").uniq)
+        if commenter_id == "any"
+          relation = relation.where("posts.last_commented_at is not null")
+        elsif commenter_id == "none"
+          relation = relation.where("posts.last_commented_at is null")
+        else
+          relation = relation.where("posts.id":  Comment.unscoped.where(creator_id: commenter_id).select(:post_id).distinct)
+        end
       end
       has_constraints!
     end

app/models/tag.rb

@@ -443,8 +443,15 @@ class Tag < ActiveRecord::Base
 
           when "commenter", "comm"
             q[:commenter_ids] ||= []
-            user_id = User.name_to_id($2)
-            q[:commenter_ids] << user_id unless user_id.blank?
+
+            if $2 == "none"
+              q[:commenter_ids] << "none"
+            elsif $2 == "any"
+              q[:commenter_ids] << "any"
+            else
+              user_id = User.name_to_id($2)
+              q[:commenter_ids] << user_id unless user_id.blank?
+            end
 
           when "noter"
             q[:noter_ids] ||= []