fucked up migrations again..

migrations.moon

@@ -46,12 +46,14 @@ import Tracks, Tags from require "models"
     for name, count in pairs tags
       Tags\create { :name, :count }
   [6]: =>
+    return true -- formerly a bad migration
+  [7]: =>
     -- WARNING: removes all tags!
     for track in *Tracks\select "*"
       tags = ""
       for field in *{"artist", "mood", "link", "genre"}
         if track[field] and #track[field] > 0
-          tags ..= " #{field}:#{track[field]}"
+          tags ..= " #{field}:#{track[field]\gsub "%s+", "_"}"
       if #tags > 0
         track.tags = process_tags "untagged" .. tags
       else