Parsing rule not working for similar words

[senyan]

Having a rule like following

        rule a
          'sponser' /  'sponsered' / 'sponsers'
        end

It works if I do parser.parse('sponser') but not working for parser.parse('sponsered') or parser.parse('sponsers').

Please let me know if it is just something I did not do properly.

[cjheath]

Treetop, like all packrat parsers, choose the first option that matches and never considers another. Change the order and it will work.

[senyan]

yeah,

        rule a
          'sponsored' /  'sponsors' / 'sponsor'
        end

this works. Thanks.

[cjheath]

Oh, and you might want to spell "sponsor" correctly. "sponser" isn't a word.

[senyan]

Hehe, definetely.