/usr/share/doc/btyacc/examples/t1.y is in btyacc 3.0-5.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 | %left LO '+' '-'
%left HI '*' '/' '%'
%nonassoc UNARY
%%
expr: expr op1 expr %prec LO
| expr op2 expr %prec HI
| unary expr %prec UNARY
;
op1 : '+'
| '-'
;
op2 : '*'
| '/'
| '%'
;
unary : '+' | '-' | '*' | '&' ;
|