Support curried arguments in umethod and umeth.

* share/txr/stdlib/struct.tl (umeth): accept variadic
arguments. Evaluate them using the dwim brackets
and pass to umethod. The (fun umethod) trick is
used to refer to the umethod in the function namespace
even if it is shadowed by a variable.

* struct.c (struct_init): Update registration of umethod to
reflect its new variadic argument signature.
(umethod_args_fun): New static function.
(umethod): Return a function based on umethod_fun,
as before, if there are no variadic args. Otherwise,
use umethod_args_fun which deals with them.

* struct.h (umethod): Declaration updated.

* tests/012/oop.tl: Modest testcase for umeth
with curried argument.

* tests/012/oop.expected: Updated.

* txr.1: Updated documentation of umeth and umethod.

1 files changed, 1 insertions, 1 deletions

diff --git a/struct.h b/struct.h
index 3923a2f2..5d116807 100644
--- a/struct.h
+++ b/struct.h
@@ -52,6 +52,6 @@ val struct_type(val strct);
 val method(val strct, val slotsym);
 val super_method(val strct, val slotsym);
 val uslot(val slot);
-val umethod(val slot);
+val umethod(val slot, struct args *);
 val method_name(val fun);
 void struct_init(void);