GREP_OPEN_PAREN   596 builtin/grep.c 	append_grep_pattern(grep_opt, "(", "command line", 0, GREP_OPEN_PAREN);
GREP_OPEN_PAREN   453 grep.c         	case GREP_OPEN_PAREN:
GREP_OPEN_PAREN   547 grep.c         	case GREP_OPEN_PAREN: fprintf(stderr, "*(*"); break;