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Simplify the Lemon and RE2C modules

Original work adapted from commits:
b1844be9cc097d86eac1e70beb0c247c35d01f0c
92cb70de2b60c9dd9e9300009897a5f025acb94d
C
Chris HORLER committed
22c437d45eceaaeaa98956abb4b54244aa2c3b15
Parent: 5ea56aa