Here is a sample of my y file. | rval '<' rval | rval '<' '<' rval | rval '>' rval | rval '>' '>' rval
| rval LSHIFT rval | rval RSHIFT rval I'd like to allow < < and > > to work like << and >>. I thought they would be difficult but found "Context-Dependent Precedence" http://www.gnu.org/software/bison/manual/html_node/Contextual-Precedence.html However it doesnt seem to work. Writing | rval '<' '<' rval %prec LSHIFT seems to do nothing. I tried putting it here where * = "%prec LSHIFT" except i only had one at a time | * rval * '<' * '<' * rval * Every slot didnt seem to work. I didnt notice any warnings except when I had more than one %prec LSHIFT in a rule. How do I get bison to treat > > and << as >> and <<. Note: I can't make rshift >\s*> in the lexer because that would interfere with other things _______________________________________________ help-bison@gnu.org https://lists.gnu.org/mailman/listinfo/help-bison