Support simple list arguments in getopts.

* share/txr/stdlib/getopts.tl (defstruct sys:opt-parsed): New
slot eff-type, appearing as an optional parameter in the boa
constructor parameter list.
(opt-desc check): Allow a type to be a cons with list
in the car position.
(sys:opt-parsed convert-type): Use the eff-type slot
if it is set instead of the type from the descriptor.
This lets us override the type for a slot, which is
key to the recursive approach to how lists are handled
in this same function.
(opthelp): Show list type options in a visual way
which suggests the use.  No details are given.

* txr.1: Documented list option type.

0 files changed, 0 insertions, 0 deletions