lib/bio/shell/core.rb in bio-1.4.2 vs lib/bio/shell/core.rb in bio-1.4.3

@@ -341,9 +341,10 @@
       STDERR.print "Saving object (#{file}) ... "
       File.rename(file, "#{file}.old") if File.exist?(file)
       File.open(file, "w") do |f|
         bind = Bio::Shell.cache[:binding]
         list = eval("local_variables", bind)
+        list.collect! { |x| x.to_s }
         list -= ["_"]
         hash = {}
         list.each do |elem|
           value = eval(elem, bind)
           if value