removed. values and call-with-values are now primitives and
the other two were only exported by accident. don't define
*values-rtd* record type or handle multiple values in
scm-style-repl.
* values.c, values.h: new files. use a struct to contain multiple
values, similar to the previous Scheme-level implementation.
* Makefile.am: add values.c, values.h, values.x.
* continuations.c (continuation_apply): support R5RS multiple value
continuations.
* init.c: call scm_init_values.
* struct.h: define SCM_SET_STRUCT_PRINTER.
custom tc7 type. This will make it easier to support R5RS
multiple value continuations, without the use of a Scheme-level
wrapper.
* continuations.c (scm_tc16_continuation, continuation_mark,
continuation_free, continuation_print, continuation_apply):
new SMOB support.
(scm_make_continuation): new procedure, replaces scm_make_cont
with a different interface.
(copy_stack_and_call, scm_dynthrow, scm_init_continuations): rewritten.
(CHEAP_CONTINUATIONS): removed non-working code completely.
(scm_call_continuation): removed.
* continuations.h (struct scm_contregs): add num_stack_items and
stack fields. previously stack was stored following this struct:
use a tail array instead.
(SCM_CONTINUATIONP): new macro.
(SCM_CONTINUATION_LENGTH, SCM_SET_CONTINUATION_LENGTH):
rewritten.
(SCM_SET_CONTREGS): removed.
* tags.h: removed scm_tc7_contin (was tag 61).
* debug.c, gc.c, hash.c, print.c, procprop.c, procs.c:
removed scm_tc7_contin support.
* eval.c: use scm_make_continuation instead of scm_make_cont.
don't set jump buffers here. remove scm_tc7_contin support.
* init.c, root.c: create SMOB continuation for rootcont instead
of scm_tc7_contin. call scm_init_continuations before
scm_init_root.
* root.c: remove support for static jmpbuf. It's not used by
default and I broke it. create SMOB continuation for rootcont.
* stacks.c: use SCM_CONTINUATIONP.
(fport_flush, fport_close): silently ignore I/O errors when
closing a port during gc. it's better than aborting in scm_error.
* throw.c (scm_handle_by_message): remove obsolete comment.
* popen.scm (open-process): bug fix: don't use
close-all-ports-except to close ports in the child process, since
it causes port buffers to be flushed. they may be flushed again
in the parent, causing duplicate output. use a more elaborate
method for setting up the child descriptors (thanks to David
Pirotte for the bug report).
standard file descriptors 0, 1, 2 in the child process
are now set up from current-input-port etc., where possible.
* ports.c (scm_port_for_each): new proc. implements port-for-each,
which applies a procedure to each port in the port table.
ports.h: declare scm_port_for_each.
* ioext.c (scm_dup2): new proc. implements "dup2" which is a simple
wrapper for the dup2 system call (unlike dup->fdes or
primitive-move->fdes).
* ioext.h: declare scm_dup2.
* filesys.c (scm_close_fdes): new proc. implements "close-fdes"
which is a simple wrapper for close system call (unlike scm_close).
* filesys.h: declare for scm_close_fdes.
