Udvidet Backus-Naur form: Forskelle mellem versioner
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Linje 43:
identifier = letter , { letter | digit | "_" } ;
terminal = "'" , visible_characters_no_quotes
, { visible_characters_no_quotes } , "'" | '"' , visible_characters_no_quotes
, { visible_characters_no_quotes } , '"' ; token = symbol | identifier | terminal ;
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