lib/invokr/errors.rb in invokr-0.9.5 vs lib/invokr/errors.rb in invokr-0.9.6

@@ -2,11 +2,11 @@
   class InputError < ArgumentError
     attr :missing_args
 
     def initialize missing_args
       @missing_args = missing_args
-      missing_args.map! do |arg| "`#{arg}'" end
+      missing_args.map! do |arg| display arg end
     end
 
     def message
       @message ||= build_message
     end
@@ -19,9 +19,16 @@
 
     def concat_missing_args
       return missing_args.first if missing_args.size == 1
       last_arg = missing_args.pop
       "#{missing_args.join ', '} and #{last_arg}"
+    end
+
+    def display arg
+      list = Array(arg).map do |arg| "`#{arg}'" end
+      str = list * " or "
+      str.insert 0, "either " if list.size > 1
+      str
     end
   end
 
   class BadArgumentsError < ArgumentError
     attr :builder, :args