bin/fasta_util in fasta_util-0.4.0 vs bin/fasta_util in fasta_util-0.5.0

@@ -61,10 +61,10 @@
   method_option :defline_grep,  :aliases => '-d', :type => :string,  :default => '', :desc => "A regular expression, used to search the entry's definition line."
   method_option :definitions_file, :aliases => '-f', :type => :string, :default => '', :desc => "A file with definitions to match, one per line."
   def filter(filename)
     invoke :filecheck
     invoke :filecheck, [options.definitions_file]
-    requested_definitions = File.open(options.definitions_file).map{|definition| definition.strip}
+    requested_definitions = File.open(options.definitions_file).map{|definition| definition.strip} if options.definitions_file
     Bio::FlatFile.open(filename).each do |entry|
       passed = true
       passed &&= (entry.length >= options.length_cutoff)
       passed &&= (entry.definition.match(Regexp.new(options.defline_grep)))
       passed &&= (requested_definitions.include? entry.definition)