HelenOS sources

lc_minus          158 uspace/app/sbi/src/lex.c 	{ lc_minus,	"-" },
lc_minus          492 uspace/app/sbi/src/lex.c 		lex->current.lclass = lc_minus;
lc_minus          277 uspace/app/sbi/src/p_expr.c 	while (lcur_lc(parse) == lc_plus || lcur_lc(parse) == lc_minus) {
lc_minus          285 uspace/app/sbi/src/p_expr.c 		case lc_minus:
lc_minus          370 uspace/app/sbi/src/p_expr.c 	case lc_minus:
lc_minus          379 uspace/app/sbi/src/p_expr.c 		case lc_minus:
HelenOS homepage, sources at GitHub