Tokens to patterns?

[Maury Markowitz]

Early imperative languages like FORTRAN and BASIC are marked by a large number 
of keywords. In my bison code I have pages of %token lines for PRINT and INPUT 
etc, which I then replicate in my flex with something like PRINT { return 
PRINT; }. This seems wasteful and just the thing the system should be 
automating away, am I missing a way to “autoflex” my tokens?