Mod4 { yylval.number = (1 << 6); return MODIFIER; }
Mod5 { yylval.number = (1 << 7); return MODIFIER; }
Mode_switch { yylval.number = (1 << 8); return MODIFIER; }
+$mod { yylval.number = (1 << 9); return TOKMODVAR; }
control { return TOKCONTROL; }
ctrl { return TOKCONTROL; }
shift { return TOKSHIFT; }