--rw-rw-r-- stallion sys  6270 Jan 12  2020 compile.go
--rw-rw-r-- stallion sys  5403 Jan 12  2020 doc.go
--rwxrwxr-x stallion sys  2428 Jan 12  2020 make_perl_groups.pl
--rw-rw-r-- stallion sys   663 Jan 12  2020 op_string.go
--rw-rw-r-- stallion sys 47256 Jan 12  2020 parse.go
--rw-rw-r-- stallion sys 14807 Jan 12  2020 parse_test.go
--rw-rw-r-- stallion sys  2403 Jan 12  2020 perl_groups.go
--rw-rw-r-- stallion sys  7660 Jan 12  2020 prog.go
--rw-rw-r-- stallion sys  1872 Jan 12  2020 prog_test.go
--rw-rw-r-- stallion sys  7854 Jan 12  2020 regexp.go
--rw-rw-r-- stallion sys  4299 Jan 12  2020 simplify.go
--rw-rw-r-- stallion sys  4105 Jan 12  2020 simplify_test.go