lib/rbbt/tsv/change_id.rb in rbbt-util-5.14.35 vs lib/rbbt/tsv/change_id.rb in rbbt-util-5.14.36

@@ -87,11 +87,11 @@
   end
 
   def self.translation_index(files, target = nil, source = nil, options = {})
     return nil if source == target
     options = Misc.add_defaults options.dup, :persist => true
-    fields = source ? [source] : nil
+    fields = (source and not source.empty?) ? [source] : nil
     files.each do |file|
       if TSV === file
         all_fields = file.all_fields
         target = file.fields.first if target.nil?
         if (source.nil? or all_fields.include? source) and all_fields.include? target
@@ -115,10 +115,10 @@
 
         other_all_fields = TSV === other_file ? other_file.all_fields : TSV.parse_header(other_file).all_fields 
 
         common_field = (all_fields & other_all_fields).first
 
-        if common_field and (source.nil? or all_fields.include? source) and other_all_fields.include? target 
+        if common_field and (source.nil? or source.empty? or all_fields.include? source) and other_all_fields.include? target 
 
           index = Persist.persist_tsv(nil, Misc.fingerprint(files), {:files => files, :source => source, :target => target}, :prefix => "Translation index", :persist => options[:persist]) do |data|
 
             index = TSV === file ? 
               file.index(options.merge(:target => common_field, :fields => fields)) :