``` Prg_ . Prg' ::= "prg" ; ``` Happy does not like the grammar BNFC creates for it: ```haskell Prg' :: { Prg' } Prg' : 'prg' { Test.Abs.Prg_ } ``` ``` Test/Par.y: Parse error ``` According to the Happy specification, identifiers for non-terminals may not use the apostrophe character: https://www.haskell.org/happy/doc/html/sec-grammar-files.html#sec-lexical-rules
Happy does not like the grammar BNFC creates for it:
According to the Happy specification, identifiers for non-terminals may not use the apostrophe character:
https://www.haskell.org/happy/doc/html/sec-grammar-files.html#sec-lexical-rules