Bruce Momjian <pgman@candle.pha.pa.us> writes:
> What does #include do? Doesn't it work?
AFAICT it's only allowed in the C-code sections of gram.y, from which
it's just transposed into the output .c file (as indeed you'd want;
you wouldn't want your header files expanded when bison is run).
I'm not seeing anything that supports inclusion of a file in the
grammar-productions portion of gram.y.
regards, tom lane