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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"A question about flag diacritics","articleBody":"This question is somewhat related to #9 . I traced the rules with dummy tags. I realized that flag diacritics are to blame for the two derivations. I'm not sure how that's possible, but both branches of an 'if-else' are being traversed. I have a flag, which signals whether the adjective is superlative (has a (leges*)leg tag). Later down the lexicon chain I test for this flag and depending on this test I either place a -bb prefix for sure, or I place it only optionally. Now, both these branches are traversed, and on both branches the bb prefix can be derived, so I have two derivations. How can this be? Once I set a flag, its value should be determined and only one R test can succeed, or am I completely misunderstanding flag diacritics?\r\n\r\nPlease consider this partial grammar:\r\n\r\nI decide early on whether an adjective is in superlative form and I set the flag with P:\r\n\r\nLEXICON Root\r\n@P.SUPERLATIVE.YES@ Exaggerative ;\r\n@P.SUPERLATIVE.NO@  Adj ;\r\n\r\nThen, later on I test for this, when I derive the -bb postfix:\r\n\r\nLEXICON AdjectiveTag\r\n@R.SUPERLATIVE.YES@[/Adj]:0 Superlative ; ! RULE 1\r\n@R.SUPERLATIVE.NO@[/Adj]:0  SuperlativeConditional ; ! RULE 2\r\n\r\nNow, since I traced rule application I am absolutely sure that RULE 1 and RULE 2 are the two forks. Also, i traced the rules under Root, and the branch which sets SUPERLATIVE to NO never runs. So the Require Superlative disregards the value of the SUPERLATIVE flag somehow. What am I doing wrong?","author":{"url":"https://github.com/dobijan","@type":"Person","name":"dobijan"},"datePublished":"2017-11-27T09:33:40.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":4},"url":"https://github.com/10/python_nlp_2017_fall/issues/10"}