lib/slop/option.rb in slop-4.0.0 vs lib/slop/option.rb in slop-4.1.0

@@ -1,9 +1,10 @@
 module Slop
   class Option
     DEFAULT_CONFIG = {
-      help: true
+      help: true,
+      tail: false,
     }
 
     # An Array of flags this option matches.
     attr_reader :flags
 
@@ -45,11 +46,11 @@
     # It's used in the Parser.
     def ensure_call(value)
       @count += 1
 
       if value.nil? && expects_argument? && !suppress_errors?
-        raise Slop::MissingArgument, "missing argument for #{flag}"
+        raise Slop::MissingArgument.new("missing argument for #{flag}", flags)
       end
 
       @value = call(value)
       block.call(@value) if block.respond_to?(:call)
     end
@@ -105,9 +106,20 @@
     end
 
     # Returns true if this option should be displayed in help text.
     def help?
       config[:help]
+    end
+
+    # Returns true if this option should be added to the tail of the help text.
+    def tail?
+      config[:tail]
+    end
+
+    # Returns 1 if this option should be added to the tail of the help text.
+    # Used for sorting.
+    def tail
+      tail? ? 1 : -1
     end
 
     # Returns the help text for this option (flags and description).
     def to_s(offset: 0)
       "%-#{offset}s  %s" % [flag, desc]