* Replace SCM_UNPACK_CAR appropriately.

[bpt/guile.git] / libguile / ChangeLog

2000-05-23  Dirk Herrmann  <D.Herrmann@tu-bs.de>

        * gc.c (free_list_length), hash.c (scm_hasher), macros.c
        (scm_macro_type), objects.c (scm_class_of), options.c
        (scm_options), print.c (scm_iprin1), strports.c (st_seek), throw.c
        (SCM_LAZY_CATCH_P):  Replace SCM_UNPACK_CAR appropriately.

2000-05-23  Dirk Herrmann  <D.Herrmann@tu-bs.de>

        * eval.c (scm_macroexp, SCM_CEVAL, scm_force), tags.h:  Replace
        SCM_UNPACK_CAR with SCM_CELL_TYPE or SCM_CELL_WORD_0.

        * eval.c (scm_force):  Add documentation.

        * eval.c (scm_force, scm_cons_source):  Don't access cells via
        SCM_{SET}?C[AD]R unless they are known to be cons cells.

2000-05-23  Dirk Herrmann  <D.Herrmann@tu-bs.de>

        * strings.h (SCM_NSTRINGP, SCM_NRWSTRINGP), tags.h
        (SCM_NDOUBLE_CELLP), vectors.h (SCM_NVECTORP):  Deprecated.

        * gc.c (scm_igc), gc.h (SCM_PTR_MASK, SCM_PTR_LT):  Removed #ifdef
        nosve #endif conditionally compiled code.

2000-05-23  Michael Livshin  <mlivshin@bigfoot.com>

        * gc.c (scm_heap_seg_data_t): fixed comment for the `span' member.

2000-05-22  Michael Livshin  <mlivshin@bigfoot.com>

        * guile-doc-snarf.in: put the preprocessed file through sed to
        trim all lines to 1024 chars.  I hope it doesn't break anybody's
        sed.  we'll see.  (note: this is lossy trimming, i.e. the spill
        isn't wrapped around but actually chopped off.  this seemed to me
        safe because the current snarfer doesn't understand multi-line
        cookies anyway.  in the long term, it would be nice not to depend
        on AWK for anything.)

        * gc.h (SCM_[SET_]CELL_{WORD,OBJECT}, SCM_VALIDATE_CELL): reverted 
        the previous change to this macros, after deciding to torture the
        snarfer instead.

2000-05-21  Michael Livshin  <mlivshin@bigfoot.com>

        * gc.h (SCM_[SET_]CELL_{WORD,OBJECT}, SCM_VALIDATE_CELL): brought
        the yucky, ugly and nasty conditional compilation back.  sorry,
        but it was either that or requiring GAWK to build Guile.
        (lots of places): removed the code that implemented the old GC
        scheme.

        * init.c (scm_boot_guile_1): removed the code conditioned on
        !GUILE_NEW_GC_SCHEME.

        * __scm.h: (GUILE_NEW_GC_SCHEME): removed.

        * gc.c (scm_protect_object, scm_unprotect_object): change the
        implementation to more efficient (at least in the time complexity
        sense).  the calls should now also be thread-safe -- I suspect
        that people expect them to be.  (thanks to Han-Wen Nienhuys)
        (lots of places): removed the code that implemented the old GC
        scheme.

        * hashtab.c (scm_hash_fn_create_handle_x): add missing
        SCM_REALLOW_INTS before return.  I really wonder about the
        possible interactions between hashtables, threads & GC.  it
        doesn't look healthy at all. 

2000-05-20  Dirk Herrmann  <D.Herrmann@tu-bs.de>

        * unif.c (scm_bit_count):  Fixed the parameter checks.  Thanks to
        Dale P. Smith.

2000-05-19  Dirk Herrmann  <D.Herrmann@tu-bs.de>

        * __scm.h (SCM_DEBUG_CELL_ACCESSES), gc.h (SCM_):  Added as a new
        debug option to verify all accesses to cells actually access
        objects on the heap.

        * gc.h (SCM_VALIDATE_CELL):  Added.  Only performs validation if
        SCM_DEBUG_CELL_ACCESSES is set to 1.

        (SCM_CELL_WORD, SCM_CELL_OBJECT, SCM_SET_CELL_WORD,
        SCM_SET_CELL_OBJECT):  Use SCM_VALIDATE_CELL to check every cell
        that is accessed.

2000-05-19  Dirk Herrmann  <D.Herrmann@tu-bs.de>

        * gh_data.c (gh_scm2chars, gh_scm2shorts, gh_scm2longs,
        gh_scm2floats, gh_scm2doubles):  Change !SCM_NIMP to SCM_IMP.

        * gc.c (scm_cellp):  Fixed and simplified.

        * throw.c (JBJMPBUF, SETJBJMPBUF, SCM_JBDFRAME, SCM_SETJBDFRAME,
        make_jmpbuf, scm_init_throw):  Now using double cells to represent
        jump buffers when using debug extensions.

        (freejb):  Removed.

2000-05-18  Dirk Herrmann  <D.Herrmann@tu-bs.de>

        * gh.h gh_data.c gh_funcs.c (gh_new_procedure*, gh_chars2byvect,
        gh_shorts2svect, gh_longs2ivect, gh_ulongs2uvect, gh_floats2fvect,
        gh_doubles2dvect, gh_doubles2scm, gh_define, gh_lookup,
        gh_module_lookup):  Accept const pointers as parameters.

        * gh.h gh_data.c (gh_int2scmb):  Deprecated.

2000-05-18  Dirk Herrmann  <D.Herrmann@tu-bs.de>

        * __scm.h (SCM_DEBUG_REST_ARGUMENT):  Renamed from
        SCM_DEBUG_REST_ARGUMENTS in order to clarify that we don't test
        the actual arguments in the list, but rather the rest argument as
        a list of arguments.

        * validate.h (SCM_VALIDATE_REST_ARGUMENT):  Added.

        * async.c (scm_noop), eval.c (scm_map, scm_for_each), list.c
        (scm_list_star, scm_append, scm_append_x), ports.c
        (scm_close_all_ports_except), ramap.c (scm_array_map_x,
        scm_array_for_each), regex-posix.c (scm_make_regexp), stacks.c
        (scm_make_stack), strings.c (scm_string_append), struct.c
        (scm_make_struct, scm_make_vtable_vtable):  Validate rest arguments.

        * dynl.c (DYNL_GLOBAL, sysdep_dynl_link, kw_global, sym_global,
        scm_dynamic_link, scm_init_dynamic_linking), dynl.h
        (scm_dynamic_link):  Removed possibility to pass flags to
        scm_dynamic_link, as it had no effect anyway.

        * filesys.c (scm_fcntl):  Made single optional rest argument into
        a standard optional argument.

        * hooks.c (scm_run_hook):  A list of rest arguments is never
        SCM_UNBNDP.

        * list.c (scm_append, scm_append_x), stacks.c (scm_make_stack),
        strings.c (scm_string_append):  Don't perform half-hearted checks
        to see whether the rest argument forms a proper list any more, use
        SCM_VALIDATE_REST_ARGUMENTS instead.

        * ports.c (scm_close_all_ports_except):  Accept empty list of rest
        arguments.

        * posix.c (scm_convert_exec_args), print.c (scm_simple_format):
        Simplify verification of rest argument.

        * stacks.c (scm_make_stack), stacks.h (scm_make_stack), throw.c
        (ss_handler, handler_message):  Make first mandatory rest argument
        of scm_make_stack into a standard mandatory argument.  

        * unif.c (scm_transpose_array, scm_enclose_array,
        scm_array_in_bounds_p), unif.h (scm_transpose_array,
        scm_enclose_array, scm_array_in_bounds_p):  Make first mandatory
        rest argument into a standard mandatory argument.

2000-05-17  Dirk Herrmann  <D.Herrmann@tu-bs.de>

        * __scm.h:  Added SCM_DEBUG as default debug option. (Thanks to
        Keisuke Nishida for the suggestion.)  Added debug option
        SCM_DEBUG_REST_ARGUMENTS.

        * eval.c (scm_map, scm_for_each):  Make sure all lists have the
        same length.  Also, removed redundant parameter checks.

2000-05-16  Dirk Herrmann  <D.Herrmann@tu-bs.de>

        * Makefile.am:  Let 'make clean' remove *.x and *.doc files.

        * __scm.h:  Improved explanation of giving options to make.

        * __scm.h (SCM_DEBUG_TYPING_STRICTNESS), tags.h
        (SCM_STRICT_TYPING, SCM_DEBUG_TYPING_STRICTNESS):  Renamed
        SCM_STRICT_TYPING to SCM_DEBUG_TYPING_STRICTNESS and moved the
        corresponding declaration and comment to __scm.h.

        * _scm.h (errno), gc.h (SCM_CELLPTR, SCM_PTR_LT), numbers.c
        (scm_remainder, scm_modulo), numbers.h (SCM_SRS, SCM_MAKINUM,
        SCM_INUM):  Removed conditionally compiled code for Turbo C.

        * gdbint.c (gdb_maybe_valid_type_p):  Eliminated call to scm_tag.
        That check can be assumed to be redundant except for very rare
        conditions that actually indicate broken heap data.

2000-05-16  Dirk Herrmann  <D.Herrmann@tu-bs.de>

        * numbers.c (scm_logcount, scm_integer_length):  Reordered
        dispatch sequence.

2000-05-15  Gary Houston  <ghouston@arglist.com>

        * stime.c (scm_strftime): don't reset TZ if zone is an empty
        string.  append a "0" to the zone for TZ.

2000-05-15  Dirk Herrmann  <D.Herrmann@tu-bs.de>

        * numbers.c (scm_logbit_p, scm_bit_extract):  Reordered dispatch
        sequence.

        (scm_bit_extract):  Fixed handling of bignums.

2000-05-15  Dirk Herrmann  <D.Herrmann@tu-bs.de>

        * async.c (scm_sys_gc_async_thunk), chars.h (SCM_ICHRP, SCM_ICHR,
        SCM_MAKICHR), continuations.h (SCM_SETJMPBUF), error.c
        (scm_sysmissing), error.h (scm_sysmissing), evalext.c
        ('serial-map), ioext.c (scm_fseek), ioext.h (scm_fseek),
        keywords.c (scm_tc16_kw, scm_init_keywords), ports.h (SCM_CRDY,
        SCM_INPORTP, SCM_OUTPORTP), ramap.c ('serial-array-copy!,
        'serial-array-map!), smob.c (scm_newsmob), smob.h (scm_smobfuns,
        scm_newsmob), tag.c (scm_tag), tag.h (scm_tag), tags.h
        (scm_tc16_flo, scm_tc_flo, scm_tc_dblr, scm_tc_dblc):  Wrapped
        deprecated code between #if (SCM_DEBUG_DEPRECATED == 0) #endif.

        * fports.c (scm_fport_buffer_add), ports.c (scm_input_port_p,
        scm_output_port_p), print.c (scm_get_print_state), validate.h
        (SCM_VALIDATE_CHAR):  Replace use of deprecated macros
        SCM_INPORTP, SCM_OUTPORTP, SCM_ICHRP by SCM_INPUT_PORT_P,
        SCM_OUTPUT_PORT_P, SCM_CHARP, respectively.

2000-05-14  Gary Houston  <ghouston@arglist.com>

        * stime.c (scm_strftime): if HAVE_TM_ZONE is not defined, hack the
        TZ environment variable so that the %Z format returns the zone
        from the input vector instead of the system default.

        from Keisuke Nishida:
        * fports.c (scm_setvbuf): minor docstring fix.
        * ports.h (scm_generic_fgets): obsolete prototype deleted.

2000-05-11  Dirk Herrmann  <D.Herrmann@tu-bs.de>

        * __scm.h:  Added new section for debugging options.

        (SCM_DEBUG_DEPRECATED):  If 1, no deprecated code is included to
        help developers to get rid of references to deprecated code.

        * numbers.[ch] (SCM_POSFIXABLE, SCM_NEGFIXABLE, SCM_UNEGFIXABLE,
        SCM_FIXABLE, SCM_FLOBUFLEN):  These macros are no longer provided
        as part of the interface and are marked as deprecated in the
        header file.

        * numbers.c (scm_make_real, scm_make_complex):  Inlined the
        corresponding macros SCM_NEWREAL and SCM_NEWCOMPLEX,
        respectively.

        * numbers.h (SCM_NEWREAL, SCM_NEWCOMPLEX, SCM_INEXP, SCM_CPLXP,
        SCM_REAL, SCM_IMAG, SCM_REALPART, scm_makdbl, SCM_SINGP,
        SCM_NO_BIGDIG, SCM_NUM2DBL, scm_dblproc):  Deprecated.

2000-05-10  Dirk Herrmann  <D.Herrmann@tu-bs.de>

        * gc.h (scm_cell, SCM_CELL_WORD, SCM_CELL_OBJECT,
        SCM_SET_CELL_WORD, SCM_SET_CELL_OBJECT):  Scheme cells now consist
        of two scm_bits_t values instead of two SCM values, because it is
        legal for cell entries to hold values that are not scheme objects.

        (SCM_SETAND_CAR, SCM_SETAND_CDR, SCM_SETOR_CAR, SCM_SETOR_CDR):
        Use SCM_SETC[AD]R to modify contents of pairs.

2000-05-10  Dirk Herrmann  <D.Herrmann@tu-bs.de>

        * numbers.c (IS_INF, isfinite):  Added FIXME comment.

        (scm_abs, scm_magnitude):  Make these two independent of each
        other.  scm_abs now reports an error if given a complex argument.

        (scm_istr2flo, scm_integer_p).  Use SCM_REAL_VALUE instead of
        SCM_REALPART if the object is known to be real.

        (scm_init_numbers):  No need to use SCM_NEWREAL macro for speed
        here.

        * numbers.h (SCM_SINGP):  Set to 0 instead of SCM_BOOL_F.

2000-05-10  Dirk Herrmann  <D.Herrmann@tu-bs.de>

        * eq.c (scm_eqv_p):  Separate handling of real and complex
        values.  Remove #ifdef SCM_BIGDIG #endif test.

        * eval.c (SCM_CEVAL, SCM_APPLY), gh_data.c (gh_scm2floats,
        gh_scm2doubles), hash.c (scm_hasher), ramap.c (scm_array_fill_int,
        ramap_rp, scm_array_map_x), random.c (vector_scale,
        vector_sum_squares), unif.c (scm_make_uve, scm_array_p,
        scm_array_set_x):  Use SCM_REAL_VALUE instead of SCM_REALPART if
        the object is known to be real.  Use SCM_COMPLEXP instead of
        deprecated SCM_CPLXP.  Use SCM_INEXACTP instead of deprecated
        SCM_INEXP.

2000-05-10  Dirk Herrmann  <D.Herrmann@tu-bs.de>

        * numbers.c:  No need to include unif.h.

        (IS_INF):  Returned to old test for now:  x == x + 1 will not work
        for large numbers due to rounding errors.
        Thanks to Kalle Olavi Niemitalo.

2000-05-09  Dirk Herrmann  <D.Herrmann@tu-bs.de>

        * numbers.c (scm_divbigdig):  Removed outdated comment.

        (scm_number_to_string, scm_string_to_number, scm_number_p,
        scm_real_p, scm_integer_p, scm_inexact_p, scm_gr_p, scm_leq_p,
        scm_geq_p, scm_make_rectangular, scm_make_polar,
        scm_inexact_to_exact):  Added comments.

        (add1, scm_init_numbers):  Removed add1.

2000-05-09  Dirk Herrmann  <D.Herrmann@tu-bs.de>

        * numbers.c (IS_INF):  The new test is x == x + 1.  The old test
        x == x/2 did not work for zero values.  Thanks to Han-Wen Nienhuys
        and Ivan Toshkov.

        (scm_number_to_string, scm_sum, scm_difference, scm_two_doubles,
        scm_num2long, scm_num2long_long, scm_num2ulong):  Reordered
        dispatch sequence.

2000-05-09  Marius Vollmer  <mvo@zagadka.ping.de>

        * scmsigs.c (take_signal): Execute SCM_ASYNC_TICK for SIGSEGV,
        SIGILL and SIGBUS signals.  These signals are not continuable and
        must be handled for real right away.

2000-05-08  Dirk Herrmann  <D.Herrmann@tu-bs.de>

        * numbers.c (scm_zero_p, scm_positive_p, scm_negative_p,
        scm_real_part, scm_imag_part, scm_magnitude,
        scm_inexact_to_exact):  Reordered dispatch sequence.

2000-05-08  Dirk Herrmann  <D.Herrmann@tu-bs.de>

        * feature.c:  No need to include "libguile/smob.h"

        (scm_loc_features, features, scm_add_feature, scm_init_feature):
        Removed variable 'scm_loc_features' as a pointer to the SCM value
        holding the features list.  Using variable 'features' instead,
        which holds the interned pair.  Thus, SCM_SETCDR can be used
        instead of pointer trickery.

2000-05-08  Dirk Herrmann  <D.Herrmann@tu-bs.de>

        * alist.c (scm_acons):  Use SCM{_SET}?_CELL_OBJECT as long as a
        cell is not known to be a valid pair.

2000-05-08  Dirk Herrmann  <D.Herrmann@tu-bs.de>

        * eval.c (ASRTSYNTAX, scm_m_body, scm_m_letrec1):  Removed
        ASRTSYNTAX.  Using SCM_ASSYNT instead.

        (scm_m_body):  Don't create a redundant cons cell.

        (scm_m_do):  Removed redundant test 'bodycheck'.

        (bodycheck):  Removed.

        * stacks.c (stack_depth, read_frame, read_frames):  Removed
        redundant calculation of size, minimized some variable scopes.

2000-05-05  Dirk Herrmann  <D.Herrmann@tu-bs.de>

        * pairs.c (scm_cons, scm_cons2):  Use SCM{_SET}?_CELL_OBJECT as
        long as a cell is not known to be a valid pair.

        (scm_pair_p):  Eliminated redundant SCM_IMP test.

2000-05-05  Dirk Herrmann  <D.Herrmann@tu-bs.de>

        * eval.c (scm_m_body, scm_macroexp, unmemocopy, scm_eval_args,
        scm_deval_args):  Eliminated redundant SCM_IMP tests.

        * hashtab.c (scm_ihashx, scm_sloppy_assx, scm_delx_x), weaks.c
        (scm_make_weak_key_hash_table, scm_make_weak_value_hash_table,
        scm_make_doubly_weak_hash_table):  Fixed critical sections.
        Thanks to Keisuke Nishida.

2000-05-05  Dirk Herrmann  <D.Herrmann@tu-bs.de>

        * numbers.c (scm_logand, scm_logior, scm_logxor, scm_logtest):
        Fixed some goto-related initialization bugs (introduced by me).

2000-05-04  Dirk Herrmann  <D.Herrmann@tu-bs.de>

        * numbers.h (SCM_INUM0):  Uses SCM_MAKINUM instead of SCM_PACK.

        * dynl.c (dynl_obj, DYNL_OBJ, get_dynl_obj):  Removed.

        (DYNL_FILENAME, DYNL_HANDLE):  Use SCM_CELL... macros instead of
        pointer trickery.

        (SET_DYNL_HANDLE):  Added.

        (scm_dynamic_object_p):  Simplified.

        (scm_dynamic_unlink, scm_dynamic_func):  Changed comment.  Deliver
        better error message when accessing unlinked dynamic objects.
        Eliminated call to get_dynl_obj.

2000-05-03  Marius Vollmer  <mvo@zagadka.ping.de>

        * scmsigs.c (orig_handlers) [!HAVE_SIGACTION]: Fix declaration to
        be an array of function pointers instead of being a pointer to an
        array returning function.  Thanks to Kalle Olavi Niemitalo!

2000-05-03  Dirk Herrmann  <D.Herrmann@tu-bs.de>

        * numbers.c (scm_divbigbig, scm_divbigint), numbers.h
        (scm_divbigbig, scm_divbigint):  Don't return zero any more to
        indicate that a division has a remainder, return SCM_UNDEFINED
        instead.  It is improbable that anyone actually used these
        functions outside of numbers.c.  For this reason and due to the
        change in behaviour the functions are static now.  Thus, if
        surprisingly there are users of these functions they will at least
        get alarmed.

        * numbers.c:  Removed #ifdef SCM_BIGDIG #endif in those functions,
        that already have a clean dispatch order.  Note: SCM_BIGDIG is
        always defined.

        * numbers.c (scm_inexact_p):  Simplified.

        * numbers.c (scm_num_eq_p, scm_less_p, scm_max, scm_min,
        scm_product, scm_num2dbl, scm_angle):  Reordered dispatch
        sequence, thereby fixing some comparisons of SCM values with
        integer constants.

        * numbers.c (scm_divide):  Division by zero of inums leads to an
        error now.  (Formerly, an infinite number was returned.)

        Respect the fact, that scm_divbigbig does now return SCM_UNDEFINED
        if a division has a remainder.

2000-05-02  Gary Houston  <ghouston@arglist.com>

        * Makefile.am (INCLUDES): add ${INCLTDL} (thanks to Tim Mooney).

2000-05-02  Dirk Herrmann  <D.Herrmann@tu-bs.de>

        * numbers.c (scm_logtest, scm_division):  Reordered dispatch
        sequence, thereby fixing some comparisons of SCM values with
        integer constants.

        * numbers.h (scm_makdbl):  Mark as deprecated at the point of
        declaration.

        * eval.c (SCM_CEVAL, SCM_APPLY), gh_data.c (gh_double2scm,
        gh_doubles2scm), numbers.c (scm_istr2flo, scm_max, scm_min,
        scm_sum, scm_difference, scm_product, scm_divide, scm_sys_expt,
        scm_sys_atan2, scm_make_rectangular, scm_make_polar,
        scm_real_part, scm_imag_part, scm_magnitude, scm_angle,
        scm_long2num, scm_long_long2num, scm_ulong2num), ramap.c
        (ramap_rp, scm_array_map_x), random.c (scm_random,
        scm_random_uniform, scm_random_normal_vector_x, scm_random_exp),
        struct.c (scm_struct_ref), unif.c (scm_array_to_list):  Replace
        call to scm_makdbl with a call to scm_make_real or
        scm_make_complex, depending on whether the imaginary part is known
        to be zero.

2000-05-01  Gary Houston  <ghouston@arglist.com>

        * scmsigs.c: fix the definition of orig_handlers for the case
        that HAVE_SIGACTION is not defined (thanks to
        Kalle Olavi Niemitalo).

        * Makefile.am: remove include_HEADERS (was libguile.h)
        libguile.h: moved to top level directory.

2000-04-28  Dirk Herrmann  <D.Herrmann@tu-bs.de>

        * numbers.c (SCM_SWAP):  Moved to the top of the file to allow for
        a wider use.

        * numbers.c (scm_modulo, scm_gcd, scm_lcm, scm_logand, scm_logior,
        scm_logxor):  Reordered dispatch sequence, thereby fixing some
        comparisons of SCM values with integer constants.

        * number.c (scm_logtest):  Removed some redundant SCM_{N}?IMP
        tests. 

2000-04-28  Dirk Herrmann  <D.Herrmann@tu-bs.de>

        * numbers.c (scm_quotient, scm_remainder):  Removed code that was
        conditionally compiled based on BADIVSGNS.  BADIVSGNS does not
        occur anywhere else throughout guile.

        * numbers.c (scm_quotient):  Fixed parameter number in error
        message.

        * numbers.c (scm_remainder):  Reordered dispatch sequence.

2000-04-25  Gary Houston  <ghouston@arglist.com>

        * posix.c (scm_execlp): docstring fix (thanks to Martin
        Grabmueller).

2000-04-25  Dirk Herrmann  <D.Herrmann@tu-bs.de>

        * eval.c (undef_object):  Made into a local static variable
        (suggested by Jost Boekemeier).

2000-04-25  Dirk Herrmann  <D.Herrmann@tu-bs.de>

        * pairs.c (cxrs, scm_init_pairs):  Simplify initialization of
        c[ad]+r functions.

        * procs.c (scm_init_iprocs), procs.h (scm_subr, scm_iproc,
        scm_dsubr, scm_init_iprocs):  Removed.

        * procs.h (SCM_SUBRF, SCM_DSUBRF):  Access the cell words
        directly instead of casting a cell to a C struct.

2000-04-22  Mikael Djurfeldt  <mdj@thalamus.nada.kth.se>

        Better modularization of GC extensions through new C level GC
        hooks:
        
        * weaks.c (scm_weaks_prehistory): New function: Add
        scm_weak_vector_gc_init to scm_before_mark_c_hook; Add
        scm_mark_weak_vector_spines to scm_before_sweep_c_hook.
        (scm_scan_weak_vectors): New function; added to
        scm_after_sweep_c_hook.

        * weaks.h (scm_weak_vectors, scm_weaks_prehistory): Added
        declarations.

        * guardians.h (scm_guardian_gc_init, scm_guardian_zombify): Are
        now static.

        * guardians.c (scm_guardian_gc_init): Turned into a hook function
        and added to scm_before_mark_c_hook.
        (scm_guardian_zombify): Turned into a hook function and added to
        scm_before_sweep_c_hook.

        * async.c (scm_sys_gc_async_thunk): Run after-gc-hook.
        Added #include "libguile/gc.h".

        * gc.h: Added #include "libguile/hooks.h".

        * gc.c: Removed #include "libguile/guardians.h".
        (scm_before_gc_c_hook, scm_before_mark_c_hook,
        scm_before_sweep_c_hook, scm_after_sweep_c_hook,
        scm_after_gc_c_hook): New C level hooks.
        (scm_after_gc_hook): New Scheme level hook.
        (scm_gc_sweep): Moved scanning of weak vectors to weaks.c.
        (scm_igc): Moved initialization of scm_weak_vectors and the call
        to scm_guardian_gc_init to respective module.
        (scm_mark_weak_vector_spines): Moved to weaks.c;
        Call to scm_guardian_zombify moved to guardians.c;
        Run scm_before_gc_c_hook, scm_before_sweep_c_hook,
        scm_after_gc_c_hook at appropriate places.
        (scm_init_gc): Initialize scm_after_gc_hook.

        * hooks.c, hooks.h (scm_make_hook_with_name): Removed deprecated
        function.

        * init.c (scm_boot_guile_1): Added `scm_init_hooks'.

        * Makefile.am: Added hooks.c, hooks.h, hooks.x.

        * feature.c, feature.h: Broke out hook code into separate files.

        * hooks.c, hooks.h: New files.

        * *.*: Change includes so that they always use the "prefixes"
        libguile/, qt/, guile-readline/, or libltdl/.
        (Thanks to Tim Mooney.)

        * Makefile.am (INCLUDES): Removed THREAD_CPPFLAGS and INCLTDL.
        (DEFS): Added.  automake adds -I options to DEFS, and we don't
        want that.
        Removed all -I options except for the root source directory and
        the root build directory.

        * numbers.c (scm_odd_p, scm_even_p): Use SCM_WRONG_TYPE_ARG
        instead of SCM_ASSERT (0, ...).  (Some compilers will complain
        about control reaching end of function otherwise, and, besides,
        the new code is not less clear.)

        * gc.c (scm_must_malloc, scm_must_realloc, scm_must_free): Added
        calls to malloc debugging functions. 

        * init.c (scm_boot_guile_1): Added calls to debug-malloc init
        functions.

        * Makefile.am: Added debug-malloc.c, debug-malloc.h,
        debug-malloc.x.

        * debug-malloc.c, debug-malloc.h: New files.

2000-04-20  Dirk Herrmann  <D.Herrmann@tu-bs.de>

        * numbers.c (scm_exact_p, scm_odd_p, scm_even_p):  Added
        documentation strings.

        * numbers.c (scm_exact_p, scm_odd_p, scm_even_p, scm_abs,
        scm_quotient):  Reordered dispatch sequence to first handle
        immediates, second handle bignums and finally handle generic
        functions respectively signal wrong type arguments.  Hopefully
        this will allow for easier separation when goops is integrated.

2000-04-19  Dirk Herrmann  <D.Herrmann@tu-bs.de>

        * gc.c (which_seg):  Use SCM2PTR to convert a non immediate SCM
        variable into a pointer to a heap cell.

        * gc.c (scm_mark_locations, scm_cellp, init_heap_seg,
        scm_unhash_name):  Remove redundant cast to SCM_CELLPTR.

2000-04-19  Dirk Herrmann  <D.Herrmann@tu-bs.de>

        * print.c (scm_iprin1):  Don't assign zero to SCM values, use
        SCM_UNDEFINED instead.

        * weaks.c (scm_make_weak_vector):  Fix assignment of zero to a
        vector element.  (Still to be improved)

2000-04-19  Dirk Herrmann  <D.Herrmann@tu-bs.de>

        * eval.c (undef_cell):  Removed, replaced by:

        (undef_object):  Added to replace undef_cell.

        (scm_lookupcar, scm_lookupcar1):  Use undef_object.

        * eval.c (scm_lookupcar, scm_lookupcar1, scm_m_atfop,
        scm_m_atbind, CHECK_EQVISH, SCM_CEVAL), procs.h (SCM_SETCODE):
        Don't perform arithmetic operations with SCM values.

        * eval.c (scm_lookupcar, scm_lookupcar1, scm_m_atfop,
        scm_m_atbind, scm_eval_args, scm_deval_args, SCM_CEVAL):  Use
        symbolic names for the tc3 type codes.

        * eval.c (scm_m_define, SCM_CEVAL, SCM_APPLY):  Remove redundant
        cast to SCM.

        * eval.c (scm_eval_args, scm_deval_args, SCM_CEVAL):  Made the
        access of the struct vcell element explicit.

2000-04-19  Mikael Djurfeldt  <mdj@thalamus.nada.kth.se>

        * struct.c (scm_struct_free_light, scm_struct_free_standard,
        scm_struct_free_entity): Use `scm_must_free' instead of `free'.

        * procs.c (scm_make_subr_opt): Tell scm_must_realloc that we're
        realloc:ing scm_subr_table ("what" instead of "who").

        * numbers.c (scm_adjbig): Ditto.

2000-04-18  Dirk Herrmann  <D.Herrmann@tu-bs.de>

        * unif.c (l2ra):  Don't eliminate the call to scm_array_set_x
        itself, as was done in the previous 'patch'.  (Thanks to Radey
        Shouman)

2000-04-18  Dirk Herrmann  <D.Herrmann@tu-bs.de>

        * options.c (scm_options), read.c (recsexpr):  Remove redundant
        SCM_IMP test.

        * print.c (scm_iprin1):  Made the access of the struct vcell
        element explicit.

        * print.h (SCM_PRINT_CLOSURE):  Added call to SCM_PACK.

        * ramap.c (scm_ra_eqp, ra_compare), unif.c
        (scm_uniform_vector_ref, scm_cvref, rapr1):  Separated accesses to
        unsigned long and signed long arrays and clarified the way the
        access is performed.

        * ramap.c (scm_array_map_x, raeql), read.c (scm_lreadr), stacks.c
        (narrow_stack), unif.c (scm_cvref, scm_uniform_array_read_x,
        scm_raprin1):  Use SCM_EQ_P to compare SCM values.

        * strings.c (scm_makstr):  Treat the msymbol slots as a field of
        scm_bits_t values.

        * struct.h (SCM_SET_VTABLE_DESTRUCTOR):  Treat the struct data as
        a field of scm_bits_t values.

        * unif.c (l2ra):  Don't test result of scm_array_set_x against
        zero:  It is always SCM_UNSPECIFIED.

2000-04-18  Mikael Djurfeldt  <mdj@mdj.nada.kth.se>

        * script.c (scm_compile_shell_switches): Also enable
        record-positions when given the --debug option.  (Thanks to Diego
        Dainese.)

2000-04-18  Dirk Herrmann  <D.Herrmann@tu-bs.de>

        * print.c (ENTER_NESTED_DATA, print_circref, scm_iprlist):
        Compare SCM's with SCM_EQ_P.

        * print.c (scm_make_print_state), srcprop.c
        (scm_source_properties):  Use valid scheme object to initialize
        SCM variable.

        * print.c (scm_iprin1):  Remove redundant calls to SCM_UNPACK.

2000-04-17  Dirk Herrmann  <D.Herrmann@tu-bs.de>

        * struct.c (scm_alloc_struct, scm_struct_free_0,
        scm_struct_free_light, scm_struct_free_standard,
        scm_struct_free_entity, scm_make_struct, scm_make_vtable_vtable),
        struct.h (scm_struct_free_t, scm_alloc_struct, scm_struct_free_0,
        scm_struct_free_light, scm_struct_free_standard,
        scm_struct_free_entity):  Struct data regions (and thus also
        vtable data regions) are now C arrays of scm_bits_t elements.

        * gc.c (scm_gc_mark, scm_gc_sweep, scm_unhash_name):  Made the
        mixup of glocs and structs explicit.

        * gc.c (scm_unprotect_object):  Compare SCM's with SCM_EQ_P.

2000-04-17  Dirk Herrmann  <D.Herrmann@tu-bs.de>

        * eval.c (scm_unmemocar):  Use macros to test for gloc cell.
        Minimize scope of variable 'ir'.

        * eval.h (SCM_IFRAME, SCM_IDIST), weaks.h (SCM_IS_WHVEC_ANY):
        Added missing call to SCM_UNPACK.

2000-04-17  Mikael Djurfeldt  <mdj@thalamus.nada.kth.se>

        * validate.h (SCM_VALIDATE_INUM_RANGE_COPY,
        SCM_VALIDATE_NUMBER_COPY): New macros.

2000-04-16  Mikael Djurfeldt  <mdj@mdj.nada.kth.se>

        * script.c (scm_compile_shell_switches): Added --debug option.

2000-04-16  Mikael Djurfeldt  <mdj@thalamus.nada.kth.se>

        * vectors.c (scm_vector_set_x): Return SCM_UNSPECIFIED (as
        specified by R5RS).

2000-04-15  Mikael Djurfeldt  <mdj@thalamus.nada.kth.se>

        * ports.h (SCM_INPUT_PORT_P, SCM_OUTPUT_PORT_P): New macros.
        (SCM_INPORTP, SCM_OUTPORTP): Marked as deprecated.

        * validate.h (SCM_VALIDATE_INPUT_PORT, SCM_VALIDATE_OUTPUT_PORT):
        New macros.
        Cleanup of code layout.

        * ports.c, ports.h (close-input-port, close-output-port): New R5RS
        procedures.

2000-04-13  Dirk Herrmann  <D.Herrmann@tu-bs.de>

        * continuations.c (scm_make_cont, scm_dynthrow):  Completely
        separated implementations for defined (CHEAP_CONTINUATIONS) and
        !defined (CHEAP_CONTINUATIONS).  Also, now using memcpy for stack
        copying.

        * continuations.c (grow_stack):  Renamed from grow_throw.

        * continuations.c (copy_stack_and_call):  New static function.

        * continuations.c (scm_dynthrow):  Simplified and made static.

        * continuations.h (scm_dynthrow):  Made static.

2000-04-13  Mikael Djurfeldt  <mdj@thalamus.nada.kth.se>

        * unif.c, unif.h (shared-array-root, shared-array-offset,
        shared-array-increments): New primitives.

2000-04-12  Dirk Herrmann  <D.Herrmann@tu-bs.de>

        * gc.c (scm_gc_sweep):  Simplify the computation of freed memory
        size for msymbols.

        * symbols.h (SCM_SLOTS, SCM_SYMBOL_FUNC, SCM_SYMBOL_PROPS,
        SCM_SYMBOL_HASH):  The msymbol slots are now a field of scm_bits_t
        values.

        * symbols.h (SCM_SET_SYMBOL_FUNC, SCM_SET_SYMBOL_PROPS):  New
        macros.

        symbols.c (scm_intern_obarray_soft, msymbolize, scm_symbol_fset_x,
        scm_symbol_pset_x):  Use them.

        * symbols.c (scm_symbol_hash):  Unpack to access SCM raw data. 

2000-04-12  Dirk Herrmann  <D.Herrmann@tu-bs.de>

        * ports.c (scm_port_print):  The port data is read as raw data.

        * ports.h (SCM_TC2PTOBNUM, SCM_PTOBNUM):  Fix SCM/scm_bits_t
        mismatch.

2000-04-11  Dirk Herrmann  <D.Herrmann@tu-bs.de>

        * eval.c (SCM_CEVAL), objects.c (scm_mcache_lookup_cmethod,
        scm_make_subclass_object), objects.h (SCM_CLASS_FLAGS,
        SCM_ENTITY_PROCEDURE, SCM_ENTITY_SETTER), struct.c
        (scm_struct_init, scm_struct_vtable_p, scm_make_struct,
        scm_struct_ref, scm_struct_set_x), struct.h (SCM_STRUCT_DATA):
        The struct data is now an array of scm_bits_t variables.

        * objects.h (SCM_SET_ENTITY_PROCEDURE):  New macro.

        objects.c (scm_set_object_procedure_x):  Use it.

        * struct.c (scm_struct_init):  Unused variable 'data' removed.

        (scm_struct_vtable_p):  Redundant SCM_IMP tests removed.

2000-04-11  Dirk Herrmann  <D.Herrmann@tu-bs.de>

        * objects.h (SCM_OBJ_CLASS_FLAGS, SCM_OBJ_CLASS_REDEF), struct.h
        (SCM_STRUCT_VTABLE_DATA, SCM_STRUCT_LAYOUT, SCM_STRUCT_VTABLE,
        SCM_STRUCT_PRINTER):  The struct vtable data is now an array of
        scm_bits_t variables.

        * struct.h (SCM_SET_STRUCT_LAYOUT):  New macro.

        struct.c (scm_make_vtable_vtable):  Use it.

2000-04-11  Dirk Herrmann  <D.Herrmann@tu-bs.de>

        * symbols.c (scm_sym2vcell, scm_sym2ovcell_soft, scm_sym2ovcell,
        scm_intern_obarray_soft, scm_sysintern0,
        scm_string_to_obarray_symbol, scm_intern_symbol,
        scm_unintern_symbol, scm_symbol_binding, scm_symbol_interned_p,
        scm_symbol_bound_p, scm_symbol_set_x):  Don't use C operators to
        compare SCM values.

2000-04-11  Dirk Herrmann  <D.Herrmann@tu-bs.de>

        * numbers.c (scm_quotient, scm_modulo):  Reordered to handle the
        case of immediate numbers parameters first.  Also, only use
        decoded numbers for numerical comparison.
        
2000-04-10  Mikael Djurfeldt  <mdj@thalamus.nada.kth.se>

        * objects.h: Don't redeclare scm_call_generic_0 and
        scm_apply_generic.  (Thanks to Tal Tversky.)

2000-04-10  Dirk Herrmann  <D.Herrmann@tu-bs.de>

        * hash.c (scm_hasher):  Use symbolic names for the tc3 constants.
        Unpack SCM value to use it as a switch parameter.  Don't cast SCM
        values to int values.

2000-04-10  Mikael Djurfeldt  <mdj@mdj.nada.kth.se>

        * coop.c (mother): Handled EINTR (the wait has been interrupted by
        a signal).

2000-04-07  Dirk Herrmann  <D.Herrmann@tu-bs.de>

        * __scm.h (SCM_WTA_DISPATCH_[012n]):  To test whether a SCM value
        contains a raw zero value it has to be unpacked.

        * debug.c (with_traps_inner, scm_with_traps):  Passing SCM values
        via void * requires unpacking / packing.

        * stacks.h (SCM_STACKP):  Remove unnecessary SCM_NIMP test and use
        SCM_EQ_P to compare SCM values.

        * stacks.h (SCM_FRAME_VOID_P, SCM_FRAME_REAL_P, SCM_FRAME_PROC_P,
        SCM_FRAME_EVAL_ARGS_P, SCM_FRAME_OVERFLOW_P):  Remove unnecessary
        call to SCM_UNPACK.

        * tags.h (SCM_NECONSP):  Define in terms of SCM_ECONSP

        * tags.h (SCM_ECONSP):  Clarify the test for glocs.  This is still
        quite ugly.

2000-04-05  Michael Livshin  <mlivshin@bigfoot.com>

        * async.[ch]: unexpose low-level async access macros (thanks to
        Dirk Herrmann).

        * validate.h: move async validation macros to async.c (nobody else
        needs them anyway), and rename them.

2000-04-04  Michael Livshin  <mlivshin@bigfoot.com>

        * async.h: kill the scm_async_t struct.  having a heap cell
        pretending to be a C struct is not helthy, and is not needed here
        anyway, as asyncs happily fit in one heap cell.

        * async.c: reflect the fact that asyncs are now represented by
        single heap cell each.

2000-04-04  Gary Houston  <ghouston@arglist.com>

        * error.c (scm_syserror): save errno before doing anything else,
        since it's used in two expressions and may get mutated (thanks to
        Dirk Herrmann).

2000-04-04  Dirk Herrmann  <D.Herrmann@tu-bs.de>

        * debug.c (scm_procedure_source, scm_procedure_environment),
        gsubr.c (scm_make_gsubr_with_generic, scm_gsubr_apply), procs.c
        (scm_procedure, scm_setter):  Return valid scheme value as dummy.

        * filesys.c (scm_readdir, scm_rewinddir, scm_closedir,
        scm_dir_print, scm_dir_free), numbers.h (SCM_COMPLEX_REAL,
        SCM_COMPLEX_IMAG), regex-posix.h (SCM_RGX), throw.c (JBJMPBUF,
        SETJBJMPBUF, JBJMPBUF, SETJBJMPBUF, freejb, print_lazy_catch,
        scm_ithrow), unif.c (scm_uniform_vector_ref, scm_cvref,
        scm_array_set_x, rapr1), unif.h (SCM_ARRAY_V, SCM_ARRAY_BASE),
        vectors.h (SCM_VELTS, SCM_VELTS_AS_STACKITEMS, SCM_SETVELTS):  Use
        SCM_{SET_}?CELL_WORD* to access cell entries with raw data.

        * filesys.c (scm_closedir), numbers.c (scm_addbig), numbers.h
        (SCM_SETNUMDIGS), throw.c (JBACTIVE, SCM_JBDFRAME,
        SCM_SETJBDFRAME): Read and modify data bits in cell entry #0 using
        SCM_{SET_}?CELL_WORD_0.

        * filesys.c (fill_select_type, retrieve_select_type, scm_select),
        numbers.c (scm_gcd, scm_lcm, scm_integer_expt, scm_zero_p,
        scm_product, scm_divide), posix.c (scm_getgrgid), ramap.c
        (scm_array_fill_int, racp), throw.c (scm_catch, scm_lazy_catch,
        scm_ithrow), unif.c (scm_make_uve, scm_array_p,
        scm_transpose_array, scm_array_set_x, scm_bit_set_star_x,
        scm_bit_count_star, l2ra), variable.c (prin_var,
        scm_make_variable, scm_make_undefined_variable,
        scm_builtin_variable), vectors.c (scm_vector_set_length_x),
        vports.c (sf_flush, sf_close):  Don't use C operators to compare
        SCM values.

        * numbers.c (scm_odd_p, scm_even_p), variable.c (prin_var):  Must
        unpack SCM values to access their raw contents.

        * numbers.c (big2str):  Eliminate unnecessary casts to SCM.

        * numbers.h (SCM_NEWREAL), regex-posix.h (SCM_RGXP), vports.c
        (scm_make_soft_port):  Use SCM_{SET_}?CELL_TYPE to access the cell
        type information.

        * throw.c (printjb):  Eliminated unnecessary unpack.

        * variable.c (make_vcell_variable):  Smob data is of type
        scm_bits_t.

2000-04-04  Mikael Djurfeldt  <mdj@mdj.nada.kth.se>

        * print.c: Removed promise to rewrite printer code before next
        release.  :)

2000-04-03  Mikael Djurfeldt  <mdj@mdj.nada.kth.se>

        * iselect.c (add_fd_sets): Insert empty statement after label.
        (Thanks to Tim Mooney.)

2000-04-03  Michael Livshin  <mlivshin@bigfoot.com>

        * guardians.c (scm_guardian_zombify): mark all zombies in a
        separate loop after processing all the currently known live
        guardians, so as to not introduce order dependencies (thanks to
        Gary Houston).  note that the order problems are still there if
        some guardians are themselves zombies, but that's a sick case that
        I'm not going to worry about.
        also, make another outer loop to process zombified
        guardians (which are uncovered while marking zombies).

2000-04-03  Dirk Herrmann  <D.Herrmann@tu-bs.de>

        * evalext.c (scm_definedp, scm_m_undefine), gc.c
        (scm_mark_weak_vector_spines, scm_gc_sweep), hashtab.c
        (scm_hashq_ref, scm_hashv_ref, scm_hash_ref, scm_hashx_ref),
        keywords.c (scm_make_keyword_from_dash_symbol), lang.c
        (scm_nil_eq), lang.h (SCM_NILP, SCM_NIL2EOL), load.c
        (scm_primitive_load), modules.c (scm_module_full_name), objects.c
        (scm_class_of, scm_mcache_lookup_cmethod, scm_make_class_object),
        ports.c (scm_close_all_ports_except), ports.h (SCM_EOF_OBJECT_P),
        print.c (scm_iprin1, scm_prin1, scm_iprlist, scm_simple_format),
        print.h (SCM_PRINT_STATE_P), procprop.c (scm_i_procedure_arity,
        scm_stand_in_scm_proc, scm_procedure_property,
        scm_set_procedure_property_x), procs.c
        (scm_procedure_documentation), read.c (scm_lreadr, scm_lreadparen,
        scm_lreadrecparen, scm_read_hash_extend), script.c
        (scm_compile_shell_switches), srcprop.c (scm_source_property,
        scm_set_source_property_x), srcprop.h (SCM_WHASHFOUNDP), stacks.c
        (read_frame, NEXT_FRAME, read_frames, narrow_stack,
        scm_make_stack, scm_stack_id), strop.c (scm_i_index,
        scm_string_index, scm_string_rindex), struct.c (scm_struct_init),
        validate.h (SCM_VALIDATE_BOOL_COPY, SCM_VALIDATE_INUM_DEF,
        SCM_VALIDATE_INUM_DEF_COPY, SCM_VALIDATE_PROC,
        SCM_VALIDATE_ARRAY):  Don't use C operators to compare SCM values.

        * feature.c (make_hook), keywords.c
        (scm_make_keyword_from_dash_symbol), macros.c (scm_makacro,
        scm_makmacro, scm_makmmacro), print.c (scm_iprin1,
        scm_printer_apply, scm_port_with_print_state):  Smob data is of type
        scm_bits_t.

        * feature.c (print_hook), gc.c (scm_object_address), hash.c
        (scm_ihashq, scm_ihashv), print.c (scm_iprin1, scm_ipruk), smob.c
        (freeprint), struct.c (scm_print_struct):  Must unpack
        SCM values to access their raw contents.

        * fluids.c (apply_thunk, scm_with_fluids), hashtab.c (fold_proc,
        scm_hash_fold), load.c (load, scm_primitive_load):  Passing SCM
        values via void * requires unpacking / packing.

        * fports.c (scm_fport_buffer_add, scm_setvbuf), procs.h
        (SCM_SUBRNUM, SCM_SET_SUBRNUM), srcprop.h (SRCPROPBRK, SRCBRKP):
        Read and modify data bits in cell entry #0 using
        SCM_{SET_}?CELL_WORD_0.

        * fports.c (scm_fdes_to_port), gc.c (scm_gc_for_newcell,
        scm_gc_sweep, init_heap_seg), init.c (start_stack), ports.c
        (scm_void_port), procs.c (scm_make_subr_opt,
        scm_make_procedure_with_setter), root.c (scm_internal_cwdr),
        smob.c (scm_make_smob), strports.c (scm_mkstrport):  Use
        SCM_SET_CELL_TYPE to write the cell type information.

        * gc.c (scm_gc_mark):  Use SCM_CELL_OBJECT* to access SCM values
        from cells that are no scheme pairs.

        * gc.c (scm_gc_sweep), mallocs.c (prinmalloc), mallocs.h
        (SCM_MALLOCDATA, SCM_SETMALLOCDATA), print.c (scm_ipruk), random.h
        (SCM_RSTATE), root.h (SCM_ROOT_STATE), smob.c (scm_smob_free),
        srcprop.c (freesrcprops), srcprop.h (SRCPROPPOS, SRCPROPFNAME,
        SRCPROPCOPY, SRCPROPPLIST), struct.c (scm_make_struct,
        scm_make_vtable_vtable):  Use SCM_{SET_}?CELL_WORD* to access cell
        entries with raw data.

        * gc.c (scm_init_storage), sort.c (applyless), strop.c
        (scm_string_to_list):  Eliminate unnecessary casts to SCM.

        * mallocs.c (scm_malloc_obj):  Store result of malloc as raw
        data.

        * ports.c (scm_close_all_ports_except):  Duplicate documentation
        text removed.

        * print.c (scm_iprin1):  Use SCM_ITAG3.

        * procs.h (SCM_SET_SUBRNUM):  Fix shift direction.

        * snarf.h (SCM_GPROC, SCM_GPROC1, SCM_SYMBOL, SCM_GLOBAL_SYMBOL,
        SCM_KEYWORD, SCM_GLOBAL_KEYWORD, SCM_VCELL, SCM_GLOBAL_VCELL,
        SCM_VCELL_INIT, SCM_GLOBAL_VCELL_INIT):  Don't initialize globals
        and static variables at their point of declaration, but rather in
        the init function.

        * tags.h (SCM_PACK):  Automatically cast to scm_bits_t.

2000-04-02  Gary Houston  <ghouston@arglist.com>

        * guardians.c (TCONC_IN, scm_make_guardian): set the CDR of the
        empty tconc pair to SCM_EOL instead of SCM_BOOL_F, avoiding the
        use of an improper list (which breaks g_print.  g_print isn't
        used).
        guardians.c: Added more comments and modified the make-guardian
        docstring.  Reordered a few procedures.

2000-04-01  Dirk Herrmann  <D.Herrmann@tu-bs.de>

        * eval.c (scm_lookupcar1, scm_lookupcar, scm_m_case, scm_m_cond,
        scm_m_lambda, iqq, scm_m_define, scm_m_expand_body, unmemocopy,
        SCM_CEVAL), procs.h (SCM_TOP_LEVEL):  Don't use C operators to
        compare SCM values.

        (scm_makprom):  Smob data is of type scm_bits_t.

2000-03-31  Dirk Herrmann  <D.Herrmann@tu-bs.de>

        * backtrace.c (display_error_body), debug.c (scm_procedure_source,
        scm_reverse_lookup), dynl.c (scm_dynamic_link):  Don't use C
        operators to compare SCM values.

        * debug.c (scm_make_debugobj), debug.h (SCM_DEBUGOBJ_FRAME,
        SCM_SET_DEBUGOBJ_FRAME):  Update SCM_{SET_}?DEBUGOBJ_FRAME to
        access raw cell data with SCM_{SET_}?CELL_WORD_1.

        * debug.c (scm_make_debugobj):  Don't use SCM_SETCAR to set types.

        * debug.c (scm_make_memoized), dynl.c (scm_dynamic_link):  Smob
        data is of type scm_bits_t.

2000-03-31  Dirk Herrmann  <D.Herrmann@tu-bs.de>

        * gdbint.c (gdb_maybe_valid_type_p), guardians.c (TCONC_EMPTYP,
        scm_guardian_zombify):  Use SCM_EQ_P to compare SCM values.

        * guardians.c (GUARDIAN):  Use SCM_CELL_WORD_1 for raw data.

2000-03-31  Dirk Herrmann  <D.Herrmann@tu-bs.de>

        * ports.h (scm_port):  Change type of stream member to scm_bits_t.

        * gdbint.c (unmark_port, remark_port), ports.c (scm_markstream),
        strports.c (st_resize_port, scm_mkstrport), vports (sf_flush,
        sf_write, sf_fill_input, sf_close, scm_make_soft_port):  Since
        streams are now of type scm_bits_t, SCM streams have to be
        unpacked/packed.

        * ports.h (SCM_SETPTAB_ENTRY, SCM_SETSTREAM):  Cast input to
        scm_bits_t.

2000-03-31  Mikael Djurfeldt  <mdj@thalamus.nada.kth.se>

        * coop-defs.h (struct coop_t): Added `sto'-field again because of
        binary compatibility---let's remove it next time we alter some
        major structure.

        * coop.c (coop_quitting_p, coop_cond_create, coop_mutex_create,
        coop_mother, coop_child): New variables.
        (mother): New function.
        (coop_create): New thread spawning mechanism which uses a "mother
        thread".  The "dummy" pthreads aren't healthy enough to give birth
        to new threads since Linux threads thinks they are asleep.

        * coop-defs.h (struct coop_t): Removed dummy_mutex.

        * coop-defs.h, coop-threads.c (struct coop_t): Eliminate
        `sto'-field when GUILE_PTHREAD_COMPAT is enabled.

2000-03-30  Dirk Herrmann  <D.Herrmann@tu-bs.de>

        * arbiters.c (scm_make_arbiter), async.c (scm_async), dynwind.c
        (scm_internal_dynamic_wind):  Smob data is always of type
        scm_bits_t.

        * arbiters.c (SCM_ARB_LOCKED, SCM_LOCK_ARB, SCM_UNLOCK_ARB):
        Access the locking information in cell entry 0 with
        SCM_{SET_}?CELL_WORD_0 instead of SCM_*CAR.

        * async.c (scm_run_asyncs):  Use SCM_NULLP to test for the empty
        list.

        * dynwind.c (scm_dowinds):  Use SCM_EQ_P to compare SCM values.

        * ports.h (SCM_PTAB_ENTRY, SCM_SETPTAB_ENTRY):  Access the ptab
        entry data using SCM_{SET_}?CELL_WORD_1 instead of SCM_{SET}?CDR.

2000-03-29  Dirk Herrmann  <D.Herrmann@tu-bs.de>

        * alist.c (scm_sloppy_assq, scm_assq), eq.c (scm_eq_p, scm_eqv_p,
        scm_equal_p), list.c (scm_ilength, scm_last_pair, scm_reverse,
        scm_sloppy_memq, scm_delq_x, scm_delq1_x), tags.h (SCM_UNBNDP):
        Don't use C operators == and != to compare SCM values, use
        SCM_EQ_P instead.

        * boolean.c (scm_boolean_p):  Use SCM_BOOLP to determine whether a
        SCM value is equal to #t or #f.

        * eq.c (scm_eqv_p, scm_equal_p):  Don't use SCM_CAR to access the
        cell type entry of non immediate objects of unknown type.  Use
        SCM_CELL_TYPE instead.

        * gh_data.c (gh_scm2bool, gh_module_lookup), list.c
        (scm_sloppy_memv, scm_sloppy_member, scm_delv_x, scm_delete_x,
        scm_delv1_x, scm_delete1_x), scmsigs.c (scm_sigaction):  Use
        SCM_FALSEP and SCM_TRUE_P to compare SCM values against #f and
        #t.

        * list.c (scm_listify):  Use SCM_UNBNDP to test for an unbound
        scheme value.

2000-03-29  Mikael Djurfeldt  <mdj@thalamus.nada.kth.se>

        * coop-threads.c (scm_call_with_new_thread, scm_spawn_thread,
        scm_make_mutex, scm_make_condition_variable): Cast data to
        scm_bits_t in SCM_SET_CELL_WORD and SCM_NEWSMOB macros.

        * coop.c (coop_create): Set `specific' field, not `data' to NULL.

2000-03-29  Dirk Herrmann  <D.Herrmann@tu-bs.de>

        * smob.h (SCM_NEWSMOB, SCM_NEWSMOB2, SCM_NEWSMOB3, SCM_SMOB_DATA,
        SCM_SET_SMOB_DATA, SCM_TC2SMOBNUM, SCM_SMOBNUM):  To access smob
        data, use SCM_{SET_}?CELL_TYPE or SCM_{SET_}?WORD_[1-3].

        Note that this implies that smob data has always to be passed as
        values of type scm_bits_t.

2000-03-29  Mikael Djurfeldt  <mdj@thalamus.nada.kth.se>

        * threads.c (scm_init_threads): Pass 0 size to scm_make_smob_type
        for scm_tc16_thread.  As the current COOP threads are written, GC
        is not supposed to manage storage for threads.

        * error.c (scm_error): Don't try to throw an error if
        scm_gc_heap_lock is true.

        * coop.c (coop_finish): New function.  Called at exit.
        (coop_aborthelp): Free thread structures when threads die.
        Finished LinuxThreads compatibility support => COOP threads now
        mesh with LinuxThreads.

        * coop-threads.c (scm_call_with_new_thread, scm_spawn_thread):
        Changed SETCDR --> SET_CELL_WORD_1.

        * coop-threads.c (scheme_launch_thread): Set word 1 of handle to 0
        when thread dies.

2000-03-29  Dirk Herrmann  <D.Herrmann@tu-bs.de>

        * boolean.h (SCM_TRUE_P):  New macro.

        * boolean.h (SCM_FALSEP, SCM_NFALSEP, SCM_BOOLP), pairs.h
        (SCM_NULLP, SCM_NNULLP):  Use SCM_EQ_P to compare SCM values.

2000-03-28  Dirk Herrmann  <D.Herrmann@tu-bs.de>

        * continuations.h (SCM_CONTREGS, SCM_SET_CONTREGS):  New macros to
        access continuation data.

        (SCM_SETJMPBUF):  Deprecated.  Use SCM_SET_CONTREGS instead.

        (SCM_JMPBUF, SCM_DYNENV, SCM_THROW_VALUE, SCM_BASE, SCM_SEQ,
        SCM_DFRAME):  Use SCM_CONTREGS instead of SCM_CHARS to access
        continuation data.

        * continuations.c (scm_make_cont), init.c (start_stack),
        root.c (scm_internal_cwdr):  Use SCM_SET_CONTREGS instead of
        SCM_SETJMPBUF.

2000-03-28  Dirk Herrmann  <D.Herrmann@tu-bs.de>

        * symbols.h (SCM_LENGTH, SCM_SETLENGTH):  Access the length field
        of strings and symbols by using SCM_{SET_}?CELL_WORD_0.

        (SCM_CHARS, SCM_UCHARS, SCM_SETCHARS):  Use SCM_{SET_}?CELL_WORD_1
        to access the char * field of strings and symbols.

2000-03-27  Dirk Herrmann  <D.Herrmann@tu-bs.de>

        * gc.h (SCM_NEWCELL, SCM_NEWCELL2):  Use SCM_SET_CELL_TYPE to set
        the type entry of a new cell.  Added a comment about things to
        remember when updating the list of free cells.

        (SCM_FREEP, SCM_MARKEDP):  Use SCM_CELL_TYPE to access the type
        entry of a cell.

2000-03-27  Dirk Herrmann  <D.Herrmann@tu-bs.de>

        * pairs.h (SCM_CAR, SCM_CDR, SCM_SETCAR, SCM_SETCDR):  Use
        SCM_CELL_OBJECT and SCM_SET_CELL_OBJECT.  This change implies that
        with strict type checking enabled these macros will only work if
        given valid SCM parameters.

        (SCM_GCCDR):  Moved to tags.h.

        * tags.h (SCM_GCCDR):  Moved here from pairs.h.

2000-03-26  Dirk Herrmann  <D.Herrmann@tu-bs.de>

        * tags.h (SCM2PTR, PTR2SCM):  Moved to gc.h.

        * pairs.h (scm_cell, SCM_CELLPTR, SCM_CELL_WORD*, SCM_CELL_OBJECT*,
        SCM_SET_CELL_WORD*, SCM_SET_CELL_OBJECT*, SCM_CELL_TYPE,
        SCM_SET_CELL_TYPE, SCM_PTR_LT, SCM_PTR_MASK, SCM_PTR_GT,
        SCM_PTR_LE, SCM_PTR_GE, SCM_CELL_WORD_LOC, SCM_NEWCELL,
        SCM_NEWCELL2):  Moved to gc.h.

        (SCM_CARLOC, SCM_CDRLOC, SCM_SETAND_CAR, SCM_SETAND_CDR,
        SCM_SETOR_CAR, SCM_SETOR_CDR):  Moved to gc.h.  These names should
        be changed, though, since the macros are not only pair related.

        (SCMPTR):  Deleted.

        * gc.h (SCM2PTR, PTR2SCM, scm_cell, SCM_CELLPTR, SCM_CELL_WORD*,
        SCM_CELL_OBJECT*, SCM_SET_CELL_WORD*, SCM_SET_CELL_OBJECT*,
        SCM_CELL_TYPE, SCM_SET_CELL_TYPE, SCM_PTR_LT, SCM_PTR_MASK,
        SCM_PTR_GT, SCM_PTR_LE, SCM_PTR_GE, SCM_CELL_WORD_LOC,
        SCM_NEWCELL, SCM_NEWCELL2, SCM_CARLOC, SCM_CDRLOC, SCM_SETAND_CAR,
        SCM_SETAND_CDR, SCM_SETOR_CAR, SCM_SETOR_CDR):  Moved here from
        tags.h and pairs.h.

2000-03-25  Dirk Herrmann  <D.Herrmann@tu-bs.de>

        * tags.h (SCM_STRICT_TYPING):  New macro that, if defined,
        activates strict compile time type checking for variables of
        type SCM.
        (SCM, SCM_PACK, SCM_UNPACK):  Define according to whether
        SCM_STRICT_TYPING or SCM_VOIDP_TEST are defined.
        (SCM_EQ_P):  Defined as a macro equivalent for eq?.

2000-03-25  Dirk Herrmann  <D.Herrmann@tu-bs.de>

        * tags.h (SCM_POINTERS_MUNGED):  Removed.

        * gc.c (scm_gc_sweep, init_heap_seg):  Removed use of
        SCM_POINTERS_MUNGED, thus fixing some illegal casts to SCM.

2000-03-24  Dirk Herrmann  <D.Herrmann@tu-bs.de>

        * pairs.h (SCM_CELL_OBJECT, SCM_CELL_OBJECT_[0-3],
        SCM_SET_CELL_OBJECT, SCM_SET_CELL_OBJECT_[0-3], SCM_CELL_TYPE,
        SCM_SET_CELL_TYPE):  Added a set of low level macros for accessing
        cell entries.
        (SCM_CELL_WORD_[0-3]): Renamed from the SCM_CELL_WORD[0-3].

        * procs.h, procs.c:  Instead of SCM_{SET_}?CELL_WORD[12], use the
        newly introduced SCM_{SET_}?CELL_OBJECT_[12] macros.

2000-03-23  Mikael Djurfeldt  <mdj@mdj.nada.kth.se>

        * tags.h: Disabled definition of SCM_VOIDP_TEST.

        Defining SCM as void * introduces problems which haven't been
        handled yet.  Developers who work with these issues can enable it
        in their working copies.

        Disabling this definition exposes a set of newly introduced and
        older misuses of types which causes warning messages during
        compilation.  We'll fix this successively.

        * gc.c (scm_mark_locations): Changed * (SCM **) X --> * (SCM *) X
        in order to obtain a value of type SCM.
        (scm_cellp): Updated with new changes to scm_mark_locations.

        * continuations.h (SCM_SETJMPBUF): Cast second arg into SCM.

        * continuations.c (scm_make_cont): Removed cast of size_t into
        long.

        * symbols.h (SCM_SETCHARS): Cast second arg into SCM.

2000-03-22  Dirk Herrmann  <D.Herrmann@tu-bs.de>

        * numbers.h (SCM_SETNUMDIGS):  Use SCM_BIGSIZEFIELD macro for
        shifting, not constant.  Thanks to Dale P. Smith.

        * numbers.c (scm_sum, scm_difference):  Don't test a SCM value
        for being less than zero.  Decode it to a C value first.  Again,
        thank you Dale.

2000-03-22  Dirk Herrmann  <D.Herrmann@tu-bs.de>

        * numbers.h, ramap.c, struct.h, vectors.h:  Don't use SCM2PTR for
        non scheme values.  If raw data is stored in SCM variables, it has
        to be accessed using SCM_UNPACK until a better solution is found.

2000-03-22  Mikael Djurfeldt  <mdj@mdj.nada.kth.se>

        * tags.h (SCM_ECONSP, SCM_NECONSP): More corrections of
        pointer-arithmetic induced by the SCM_PACK/UNPACK change.

        * print.c (scm_iprin1): SCM_PACK/UNPACK corrections.

        * gc.c (scm_gc_sweep): SCM_PACK/UNPACK corrections.

        * eval.c (SCM_CEVAL, scm_unmemocar): SCM_PACK/UNPACK corrections.

        * dynwind.c (scm_swap_bindings): SCM_PACK/UNPACK corrections.

        * async.c, __scm.h: Removed lots of the old async click logic.  It
        is possible to reinsert it by defining GUILE_OLD_ASYNC_CLICK in
        __scm.h.  Let's try this out and dump the old code after the
        threads reorganization.
        (set-tick-rate, set-switch-rate): Conditionally removed.

2000-03-21  Mikael Djurfeldt  <mdj@mdj.nada.kth.se>

        * gc.c (scm_gc_mark): Bugfix 1: The recent SCM_PACK/UNPACK change
        made SCM values into pointers.  This turned an arithmetic
        computation of the address of the vcell into a pointer-arithmetic
        one, thereby screwing up marking of structs.
        Bugfix 2: Removed incompletely introduced loop variable `j' used
        when protecting the tail array of a struct.

2000-03-21  Dirk Herrmann  <D.Herrmann@tu-bs.de>

        * struct.h (SCM_STRUCT_DATA):  Don't cast SCM values to pointers.

2000-03-21  Dirk Herrmann  <D.Herrmann@tu-bs.de>

        * symbols.h, symbols.c (scm_strhash):  Declare the string
        parameter as constant, since it is not modified.

        * symbols.c (scm_intern_obarray_soft,
        scm_sysintern0_no_module_lookup):  Can now pass constant strings
        to scm_strhash without need for casting.

2000-03-21  Dirk Herrmann  <D.Herrmann@tu-bs.de>

        * vectors.h (SCM_VELTS, SCM_VELTS_AS_STACKITEMS):  Don't cast SCM
        values to pointers.  Use SCM2PTR instead.

2000-03-21  Dirk Herrmann  <D.Herrmann@tu-bs.de>

        * async.c (scm_set_tick_rate, scm_set_switch_rate):  Don't unpack
        results of SCM_INUM.

2000-03-21  Mikael Djurfeldt  <mdj@thalamus.nada.kth.se>

        * init.c (scm_boot_guile_1): Renamed GUILE_GC_TRIGGER_1 -->
        GUILE_MIN_YIELD_1, GUILE_GC_TRIGGER_2 --> GUILE_MIN_YIELD_2.
        GUILE_MIN_YIELD_X now take *positive* fractions of heap size.

        * gc.c, gc.h (SCM_MIN_YIELD_1, SCM_MIN_YIELD_2,
        min_yield_fraction, min_yield, adjust_min_yield): Renamed from
        SCM_GC_TRIGGER_1, SCM_GC_TRIGGER_2, gc_trigger_fraction,
        gc_trigger, adjust_gc_trigger.

        * gc.c (alloc_some_heap): Further improvement of minimal heap size
        prediction.
        (SCM_MAX): New macro.
        (scm_freelist_t): New field: collected_1. Previous amount of
        collected cells.
        (gc_sweep_freelist_finish): Trigger based on two last values of
        freelist->collected to avoid unnecessary allocation due to
        temporary peaks.
        (SCM_INIT_HEAP_SIZE_1, SCM_GC_TRIGGER_1, SCM_GC_TRIGGER_2):
        Adjusted to 45000 cells, 40% and 40%.  Gives quick startup
        without extra heap allocation.

2000-03-20  Dirk Herrmann  <D.Herrmann@tu-bs.de>

        * numbers.h (SCM_MAKINUM):  The parameter to SCM_MAKINUM should
        already be a C value.  No need to unpack it.

        * numbers.c (scm_long_long2num):  Cast the parameter to scm_bits_t
        if we know it fits into an inum.

        * ramap.c (ramap_rp):  An scm_tc7_[ui]vect object does point to a
        field of long values.  In contrast, SCM_VELTS accesses a field of
        SCM values.

2000-03-20  Mikael Djurfeldt  <mdj@mdj.nada.kth.se>

        * gc.c (scm_gc_stats): Inserted explanation of local_scm_mtrigger
        etc.
        (scm_gc_yield_1): New variable: Holds previous yield.  Used to
        make better judgements.
        (gc_sweep_freelist_finish): Inserted explanation of use of
        gc_trigger.

        * print.h, stacks.h, options.c, options.h: Changed C++
        commentaries to C.

2000-03-20  Dirk Herrmann  <D.Herrmann@tu-bs.de>

        * tags.h (SCM2PTR, PTR2SCM):  Use SCM_PACK / SCM_UNPACK correctly.

        * numbers.h (SCM_INUMP, SCM_MAKINUM, SCM_INUM0, SCM_COMPLEX_REAL,
        SCM_COMPLEX_IMAG, SCM_NUMP, SCM_BDIGITS):  Use SCM_PACK /
        SCM_UNPACK / SCM2PTR correctly.

2000-03-20  Mikael Djurfeldt  <mdj@mdj.nada.kth.se>

        * gc.c (adjust_gc_trigger): Improved documentation.
        (alloc_some_heap): Since gc_trigger is used against
        freelist->collected, this is the value which should be used to
        predict minimum growth.

2000-03-20  Dirk Herrmann  <D.Herrmann@tu-bs.de>

        * eval.h:  Fix mixup of packed/unpacked SCM values.  (Thanks
        Thien-Thi Nguyen for the patch.)

2000-03-20  Dirk Herrmann  <D.Herrmann@tu-bs.de>

        * numbers.c (scm_ash):  Fixed typing problems with the second
        parameter and added some documentation.  (Thanks Thien-Thi Nguyen
        for indicating the problem.)

2000-03-19  Mikael Djurfeldt  <mdj@mdj.nada.kth.se>

        * gc.c, gc.h (scm_gc_yield): New variable.
        (adjust_gc_trigger): Use scm_gc_yield.
        (alloc_some_heap): Use scm_gc_yield instead of
        scm_gc_cells_collected.

        * coop-threads.c: Addd #include "root.h", #include "strings.h".

        * debug.c: Added #include "root.h".  (Thanks to Thien-Thi Nguyen.)

        * gc.c (scm_gc_for_newcell, adjust_gc_trigger): Improved GC
        trigger adjustmeant: Take yield (freed cells) for all freelists
        into account.
        (SCM_INIT_HEAP_SIZE_1, SCM_GC_TRIGGER_1, SCM_GC_TRIGGER_2): Tuned
        to 50000 cell heap with 45% trigger.
        (scm_gc_cells_collected): Reintroduced.
        (SCM_HEAP_SIZE): New macro.
        (scm_gc_sweep): Reintroduced correct computation of
        scm_cells_allocated.
        (scm_freelist_t): Corrected commentary for field `cluster_size':
        Clustersize counts objects, not cells;  New member
        `clusters_allocated'.

2000-03-19  Michael Livshin  <mlivshin@bigfoot.com>

        * *.[hc]: add Emacs magic at the end of file, to ensure GNU
        indentation style.

2000-03-19  Mikael Djurfeldt  <mdj@thalamus.nada.kth.se>

        * threads.h: Added #include "libguile/throw.h".  (Thanks to
        Thien-Thi Nguyen.)

2000-03-18  Michael Livshin  <mlivshin@bigfoot.com>

        * tags.h: (SCM_DOUBLE_CELLP, SCM_NDOUBLE_CELLP): new macros (bad
        names, anyone got any better ones?)

        * gc.h: (typedef struct scm_freelist_t) remove from here.

        * gc.c: (CELL_UP, CELL_DN) made these macros take additional
        parameter (the span).
        (CLUSTER_SIZE_IN_BYTES, ALIGNMENT_SLACK) new macros.
        (typedef struct scm_freelist_t) moved here from gc.h, it had no
        business being externally visible.
        (typedef struct scm_heap_seg_data_t) renamed from
        scm_heap_seg_data, to be style-compliant.
        (scm_mark_locations) if the possible pointer points to a
        double-cell, check that it's properly aligned.
        (init_heap_seg) align double-cells properly, work with the
        assumption that the segment size divides cleanly by cluster size.
        (round_to_cluster_size) new function.
        (alloc_some_heap, make_initial_segment) use round_to_cluster_size
        to satisfy the new init_heap_seg invariant.

2000-03-18  Dirk Herrmann  <D.Herrmann@tu-bs.de>

        * _scm.h:  Don't include async.h everywhere...

        * eq.c eval.c iselect.c: ... only include it here.

2000-03-18  Dirk Herrmann  <D.Herrmann@tu-bs.de>

        * _scm.h:  Don't include root.h everywhere...

        * async.c continuations.c eq.c eval.c evalext.c feature.c gc.c
        gdbint.c gsubr.c ioext.c keywords.c lang.c load.c macros.c
        numbers.c objprop.c ports.c print.c procprop.c ramap.c read.c
        srcprop.c stackchk.c stacks.c strports.c symbols.c unif.c
        variable.c vectors.c vports.c: ... only include it here.

2000-03-17  Dirk Herrmann  <D.Herrmann@tu-bs.de>

        * _scm.h:  Don't include strings.h everywhere...

        * backtrace.c dynl.c error.c feature.c filesys.c fports.c gc.c
        gdbint.c ioext.c load.c net_db.c numbers.c objects.c options.c
        ports.c posix.c print.c procs.c random.c read.c regex-posix.c
        simpos.c socket.c stacks.c stime.c strop.c strports.c struct.c
        symbols.c unif.c vectors.c version.c vports.c: ... only include it
        here.

2000-03-17  Dirk Herrmann  <D.Herrmann@tu-bs.de>

        * _scm.h:  Don't include ports.h everywhere...

        * arbiters.c backtrace.c debug.c dynl.c dynwind.c eval.c feature.c
        fluids.c gc.c gdbint.c guardians.c hash.c keywords.c mallocs.c
        numbers.c objects.c print.c read.c root.c smob.c srcprop.c
        stackchk.c strports.c struct.c throw.c variable.c:  ... only
        include it here.

2000-03-17  Dirk Herrmann  <D.Herrmann@tu-bs.de>

        * _scm.h:  Don't include vectors.h everywhere...

        * eq.c eval.c filesys.c gc.c gsubr.c guardians.c hash.c hashtab.c
        keywords.c net_db.c numbers.c objects.c posix.c print.c procprop.c
        procs.c ramap.c random.c read.c scmsigs.c socket.c sort.c stime.c
        strports.c symbols.c unif.c vports.c weaks.c:  ... only include it
        here.

2000-03-17  Dirk Herrmann  <D.Herrmann@tu-bs.de>

        * genio.h:  removed.  (Only content was '/* delete me */'.)

        * Makefile.am arbiters.c backtrace.c debug.c dynl.c dynwind.c
        error.c filesys.c fluids.c gc.c gsubr.c guardians.c keywords.c
        libguile.h mallocs.c numbers.c print.c random.c read.c root.c
        srcprop.c stackchk.c struct.c threads.c throw.c variable.c:
        Removed reference to genio.h

2000-03-17  Mikael Djurfeldt  <mdj@thalamus.nada.kth.se>

        * gc.c, gc.h: Cleanup of the change of 2000-03-15.
        Cluster sizes are now independent of GC trigger values.
        GUILE_GC_TRIGGER_n can now specify a relative trigger value:
        A negative integer gives fraction of total heap size in percent.
        (SCM_GC_TRIGGER_1, SCM_GC_TRIGGER_2): Default values set to -40.

        * init.c (scm_boot_guile_1): Introduced new variable
        GUILE_MAX_SEGMENT_SIZE; New environment variable names:
        GUILE_INIT_SEGMENT_SIZE_1, GUILE_GC_TRIGGER_1,
        GUILE_INIT_SEGMENT_SIZE_2, GUILE_GC_TRIGGER_2

2000-03-16  Mikael Djurfeldt  <mdj@mdj.nada.kth.se>

        * __scm.h (GC_FREE_SEGMENTS): Disable this until we have made
        freeing of segment work with the new GC scheme.  (Thanks to
        Michael Livshin.)  Oops, also happened to make GUILE_NEW_GC_SCHEME
        the default, but I'll let this change stay in CVS Guile since this
        code is not expected to contain serious bugs.

2000-03-16  Mikael Djurfeldt  <mdj@thalamus.nada.kth.se>

        * gc.c, gc.h (scm_map_free_list): Define also if GUILE_DEBUG is
        defined.
        (scm_free_list_length): New procedure (GUILE_DEBUG).
        Fixed a small but serious bug introduced by the previous change.

        * gc.c (scm_gc_sweep): Moved variable n_objects to inner sweep
        loop and declare as register.

        * gc.c (scm_gc_sweep): Sigh... forgot to clear private freelists
        after GC.

Wed Mar 15 08:27:04 2000  Greg J. Badros  <gjb@cs.washington.edu>

        * fluids.c: Docstring patch from Keisuke Nishida.  Some
        reindentation, too, and a couple formals renamed.  Should
        fluid-set! return UNSPECIFIED instead of a value?

Wed Mar 15 08:24:58 2000  Greg J. Badros  <gjb@cs.washington.edu>

        * Makefile.am: Separate out DOT_X_FILES and DOT_DOC_FILES, and
        generate the latter from the concrete listing of the former.  Then
        make guile-procedures.txt depend on DOT_DOC_FILES instead of
        *.doc, so that rebuilding it works.

Wed Mar 15 08:12:14 2000  Greg J. Badros  <gjb@cs.washington.edu>

        * libguile.h: Include libguile/validate.h.  Thanks Keisuke Nishida!

        * guile-snarf.awk.in: Replace docstring line-ending \n" and \n\n"
        with nothing and \n, respectively. Thanks Keisuke Nishida for
        noticing this problem.

2000-03-15  Mikael Djurfeldt  <mdj@mdj.nada.kth.se>

        * __scm.h (GUILE_NEW_GC_SCHEME): Define this if you want to test a
        new way of allocating heap.  It makes Guile fast, but still
        contains bugs.

        * gc.c, gc.h, pairs.h, init.c: Implementation of a new way of
        allocating heap.  The basic idea is to trigger GC every Nth
        allocated cell and grow heap when free list runs out.  The scheme
        has been extended so that GC isn't triggered until all remaining
        cells are used.  The implementation is also prepared for
        development in the direction of POSIX threads.

        * gc.c (SCM_EXPHEAP): In order to grow by a factor of 1.5,
        SCM_EXPHEAP should return half of the heap size.

2000-03-14  Mikael Djurfeldt  <mdj@thalamus.nada.kth.se>

        The following change to init.c is only enabled if Guile was
        configured with --enable-guile-debug.

        * init.c (scm_i_getenv_int): New function.
        (scm_boot_guile_1): Use the environment variables
        GUILE_INIT_HEAP_SIZE, GUILE_INIT_HEAP_SIZE2 to select heap size if
        they exist.  (This may be replaced by a Scheme level mechanism in
        the future.)

        * objprop.c (s_scm_set_object_property_x): Use scm_assq instead of
        scm_assoc.  (Thanks to Keisuke Nishida.)

2000-03-14  Mikael Djurfeldt  <mdj@mdj.nada.kth.se>

        * eval.c, lang.c, lang.h (scm_lisp_nil, scm_lisp_t): Renamed from
        scm_nil, scm_t.  (Thanks to Keisuke Nishida.)

2000-03-14  Mikael Djurfeldt  <mdj@thalamus.nada.kth.se>

        * init.c (scm_boot_guile_1): Use same initial segment size for
        1-word and 2-word segments.  Having the smaller size causes Guile
        to GC too often.  Obviously something needs to be done to allow
        for a smaller 2-word segment without this to happen.  (The amount
        of heap for each type should be automatically adapted to the
        application somehow.)

        [Almost all of these changes should be documented in the NEWS
        file.]

        * gc.h (scm_freelist_t): New type.

        * pairs.h (SCM_NEWCELL, SCM_NEWCELL2): Use new style freelists.

        * gc.c (SCM_INIT_HEAP_SIZE): Changed from 32768 --> 40000 so that
        all of Guile basics fits into one segment and there suitable room
        for work.
        (SCM_EXPHEAP): Now takes an argument.  Grow by a factor of 1.5
        instead of 2.
        (scm_freelist, scm_freelist2): Now of type scm_freelist_t.
        Freelists now contains information about object span, cells
        collected and amount of cells in heap segments belonging to the
        list.
        (scm_heap_size, scm_gc_cells_collected): Removed.

        * init.c (scm_boot_guile_1): Make 2-word segment 8K (512 cells).

        * Makefile.am (libguile_la_LDFLAGS): Bumped library version
        number.

        * __scm.h eq.c, eval.c, gc.c, gc.h, gh_data, hash.c, numbers.c,
        numbers.h, objects.c, ramap.c, random.c, unif.c, unif.h: Extensive
        rewrite of handling of real and complex numbers.
        (SCM_FLOATS, SCM_SINGLES): These #ifdef conditionals have been
        removed along with the support for floats.  (Float vectors are
        still supported.)

        * tags.h (scm_tcs_bignums): Removed.
        (scm_tc16_bigpos, scm_tc16_bigneg): Replaced by scm_tc16_big.
        Use SCM_BIGSIGN(x) to test for sign!
        (scm_tc16_big): The new bignum type.
        (SCM_REAL_PART, SCM_IMAG_PART): Removed.

        * numbers.h (SCM_BIGSIGN): Sign moved to bit 16.
        (scm_makdbl): Deprecated.
        (SCM_NEWREAL, SCM_NEWCOMPLEX): New macros.
        (SCM_SINGP): Deprecated.
        (SCM_FLO): Removed.
        (SCM_INEXP, SCM_CPLXP): Deprecated.
        (SCM_INEXACTP, SCM_COMPLEXP): New macros.
        (SCM_COMPLEX_REAL, SCM_COMPLEX_IMAG): Renamed from
        SCM_REAL, SCM_IMAG (and now only valid for complex numbers).
        (SCM_REAL, SCM_IMAG): New, *deprecated*, selectors which work both
        for doubles and complex numbers.
        (SCM_REAL_VALUE): New selector for doubles.
        (scm_double_t, scm_complex_t): New types.
        (scm_dbl): Removed.

        * numbers.c (scm_floprint, scm_floequal): Removed.
        (scm_print_real, scm_print_complex, scm_real_equalp,
        scm_complex_equalp): New functions.

        * unif.c (scm_makflo): Removed.

        * smob.h (SCM_SMOB_PREDICATE): New macro.
        (SCM_NEWSMOB2, SCM_RETURN_NEWSMOB2, SCM_NEWSMOB3,
        SCM_RETURN_NEWSMOB3): New macros.

1999-11-21  Michael Livshin  <mlivshin@bigfoot.com>

        The following changes implement primitive support for double cells
        (i.e. four-word cells) and change the representation of some
        things to multi-cells instead of cons+malloc.  (Applied and
        modified by mdj.)

        * pairs.h (SCM_NEWCELL2): double-cell variants of SCM_NEWCELL.
        (SCM_CELL_WORD, SCM_CELL_WORDLOC, SCM_SET_CELL_WORD): primitive
        multi-cell access macros (used by the ones below).
        (SCM_CELL_WORD[0-3], SCM_SET_CELL_WORD[0-3]): multi-cell access
        macros.

        * gc.c (scm_freelist2): multi-cell freelists.
        (inner_map_free_list): map_free_list, parameterized on ncells.
        "nn cells in segment mm" was misleading for ncells > 1; changed to
        "objects".  still print cells too, though.
        (scm_map_free_list): rewritten using inner_map_free_list.
        (scm_check_freelist): get freelist as parameter, since now we have
        more than one.
        (scm_debug_newcell2): multi-cell variants of
        scm_debug_newcell.
        (scm_gc_for_newcell): take ncells and freelist pointer as
        parameters.
        (scm_gc_mark): add case for tc7_pws (procedures with setters are
        now double cells).
        (scm_gc_sweep): don't free the float data, since it's not malloced
        anymore.
        (init_heap_seg): didn't understand what n_new_objects stood for,
        so changed to n_new_cells.
        (make_initial_segment): new function, makes an initial segment
        according to given ncells.
        (scm_init_storage): call make_initial_segment, for ncells={1,2,3}.

        * numbers.c (scm_makdbl): no malloc'ing needed, so the
        {DEFER,ALLOW}_INTS thing removed.

        * numbers.h (struct scm_dbl): changed to represent a double cell,
        with the number in the second half.

        * dynwind.c: changed the wind-guards representation to double
        cell.

        * procs.c, procs.h: changed the procedure-with-setter representation
        to double cell.

        * async.c, async.h: made async representation a double cell.

        * dynl.c: made dynamic_obj representation a double cell.

2000-03-13  Gary Houston  <ghouston@arglist.com>

        * ports.c (flush_void_port): renamed to flush_port_default.
        (end_input_void_port): renamed to end_input_default.

        * init.c (scm_standard_stream_to_port): create a void port instead
        of opening /dev/null if the standard file descriptors are bad.
        advantages: no portability problems, doesn't waste a file descriptor,
        simplifies the code (thanks to Marius for the idea).

        * vports.c (s_scm_make_soft_port): call scm_port_non_buffer.

        * void ports: make reading from a void port give EOF instead of
        segv:
        * ports.c (s_scm_sys_make_void_port): modified docstring.
        (fill_input_void_port): new proc.
        (scm_init_ports): set up fill_input_void_port.
        * ports.c (scm_port_non_buffer): new proc.
        (scm_void_port): call scm_port_non_buffer.

        * fports.c (scm_setvbuf): docstring: remove the fcntl documentation
        which was incorrectly appended.

2000-03-13  Mikael Djurfeldt  <mdj@mdj.nada.kth.se>

        * guile-doc-snarf.in: Don't use absolute path for `sed'.  (Note
        that we can't use autoconf for this.  Autoconf itself relies on
        the existence of `sed' somewhere on your path.)  (Thanks to Dirk
        Herrman.)

2000-03-13  Mikael Djurfeldt  <mdj@thalamus.nada.kth.se>

        * Makefile.am (libguile_la_SOURCES): Moved iselect.c here from
        EXTRA_libguile_la_SOURCES.

        * iselect.h: Always declare scm_internal_select.

        * iselect.c (scm_internal_select): Added SCM_ASYNC_TICK at the
        end.  Also let scm_internal_select be a real function also when
        not using threads.

        * __scm.h (SCM_TICK): Oops! Forgot to put SCM_ASYNC_TICK here...

2000-03-13  Mikael Djurfeldt  <mdj@mdj.nada.kth.se>

        * __scm.h (SCM_ALLOW_INTS, SCM_REALLOW_INTS): Removed call to
        SCM_ASYNC_TICK.  (This is a preparation for POSIX threads support,
        and kind of an experiment: Will this cause problems?)

Sun Mar 12 13:26:30 2000  Greg J. Badros  <gjb@cs.washington.edu>

        * Makefile.am: Added *.doc to DISTCLEANFILES.

2000-03-12  Gary Houston  <ghouston@arglist.com>

        * fports.c (scm_fdes_to_port): call fcntl F_GETFL to test that
        the fdes is valid before doing anything else.  check that
        the file descriptor supports the modes required.
        (scm_fport_buffer_add): don't throw an error if fstat doesn't
        work: just use the default buffer size.

        * throw.c: change an outdated comment about scm_internal_catch
        BODY: it doesn't take a jumpbuf arg.

        * init.c (scm_standard_stream_to_port): install a handler in case
        scm_fdes_to_port throws an error.  don't check here whether the
        file descriptor is valid, since scm_fdes_to_port will do that.
        set the revealed count depending on whether the port got the
        standard file descriptor.
        (stream_body_data): new type.
        (stream_body, stream_handler): new procs.

2000-03-12  Mikael Djurfeldt  <mdj@thalamus.nada.kth.se>

        * stacks.c, stacks.h, struct.c, tags.h, unif.c (scm_bits_t):
        Renamed from SCMWORD.

        * tags.h (SCM_NCELLP): Removed (SCMWORD).

        * arbiters.c (SCM_ARB_LOCKED): Use SCM_UNPACK_CAR.

        * async.c, boolean.h, debug.c, dynl.c, dynwind.c, eval.c, eval.h,
          feature.h, filesys.h, fluids.h, fports.c, fports.h, gc.c, gc.h,
          hash.c, keywords.h, macros.c, numbers.c, numbers.h, objects.c,
          objects.h, options.c, pairs.h, ports.c, ports.h, print.c,
          procs.h, ramap.c, read.c, smob.c, smob.h, srcprop.h, stacks.c,
          stacks.h, strports.c, struct.c, struct.h, tag.c, tags.h,
          throw.c, unif.c, unif.h, variable.h, vectors.h, weaks.c,
          weaks.h (SCM_PACK, SCM_UNPACK, SCM_UNPACK_CAR): Renamed from
          SCM_ASSCM, SCM_ASWORD, SCM_CARW).

        * numbers.h (SCM_SRS, SCM_INUM): Corrected SCM_ASSCM/ASWORD fixes.

        * alist.c, eval.c, net_db.c, posix.c, print.c, snarf.h, struct.c,
        tags.h: Fixed copyright notices.

        * struct.c, coop-threads.c: SCM_ASSCM/ASWORD fixes.

2000-03-12  Marius Vollmer  <mvo@zagadka.ping.de>

        * init.c (scm_standard_stream_to_port): Check whether the file
        descriptor is valid and substitute "/dev/null" when not.

2000-03-12  Mikael Djurfeldt  <mdj@thalamus.nada.kth.se>

        * coop-defs.h (struct timespec): Conditionally defined.

        * coop.c (coop_condition_variable_timed_wait_mutex): Use ETIMEDOUT
        instead of ETIME.

        * readline.c (match_paren): Bugfix: First arg to select is not
        number of descriptors but the number of the highest descriptor +
        1.

        This is a preliminary attempt at a cleanup of the threads support
        code.  It moves things to better places, makes arguments more
        consistent with the POSIX API (which is used in GNOME's glib), and
        adds new functionality.

        * readline.c (scm_init_readline): Added new arg to scm_init_mutex.

        * coop-defs.h (scm_mutex_trylock): New macro: alias for
        coop_mutex_trylock.
        (scm_cond_init): Changed definition to
        coop_new_condition_variable_init.

        * coop.c: #include <errno.h>
        (coop_timeout_qinsert): Moved here from iselect.c
        (coop_new_mutex_init, coop_new_condition_variable_init): New
        functions.  The strange names are temporary.  Use scm_mutex_init
        and scm_cond_init instead.
        (coop_mutex_trylock): New function.  Uses errno.h:EBUSY.  errno.h
        is ANSI C, but should we check for individual error codes in
        configure.in?
        (coop_condition_variable_timed_wait_mutex): New function.
        (coop_key_create, coop_setspecific, coop_getspecific,
        coop_key_delete): New functions.

        * iselect.c (coop_timout_qinsert): Moved to coop.c

2000-03-11  Mikael Djurfeldt  <mdj@thalamus.nada.kth.se>

        * pairs.h (SCM_SETAND_CAR, SCM_SETAND_CDR, SCM_SETOR_CAR,
        SCM_SETOR_CDR): Corrected SCM_ASSCM/WORD fixes.

        * tags.h (SCM_VOIDP_TEST): Renamed from VOIDP_TEST.
        Layout cleanups.

        * objects.h (SCM_CLASS_FLAGS, SCM_OBJ_CLASS_FLAGS,
        SCM_SET_CLASS_INSTANCE_SIZE), struct.h (SCM_STRUCT_VTABLE_DATA),
        proc.h (SCM_CLOSCAR): SCM_ASSCM/WORD fixes.

        * eval.c (scm_lookupcar1): Inserted SCM_ASWORD in expressions
        dealing with ilocs.

2000-03-11  Dale P. Smith  <dpsm@en.com>, applied by Greg J. Badros, <gjb@cs.washington.edu>

        * numbers.c (scm_copy_big_dec, scm_copy_smaller, scm_big_ior,
        scm_big_xor, scm_big_and, scm_big_test): Added new lowlevel bignum
        logical functions from SCM.

        (logand, logior, logxor, logtest, logbit?): Extended scheme
        logical functions to use bignums from SCM.

        (lognot): Removed call to `SCM_VALIDATE_INUM' that prevented
        lognot from using bignums.

Thu Mar  9 11:33:25 2000  Greg J. Badros  <gjb@cs.washington.edu>

        * vectors.h (SCM_VELTS_AS_STACKITEMS): Added this macro to help in
        eliminating some warnings.

        * unif.c, strports.c, print.c, options.c: Fix some warnings on
        mis-use of SCM/long

        * gc.c, gc.h: Added scm_return_first_int(), and added comment re:
        what the scm_return_first* functions do.

2000-03-09  Han-Wen Nienhuys  <hanwen@cs.uu.nl>, applied by Greg J. Badros, <gjb@cs.washington.edu>

       * libguile/*.[ch]: make a distinction between SCM as a generic
       name for a Scheme object (now a void*), and SCM as 32 bit word for
       storing tags and immediates (now a long int).  Introduced
       SCM_ASWORD and SCM_ASSCM for conversion. Fixed various dubious
       code in the process: arbiter.c (use macros), unif.c (scm_array_p),

Wed Mar  8 10:15:59 2000  Greg J. Badros  <gjb@cs.washington.edu>

        * numbers.c:  Use SCM_VALIDATE_LONG_COPY, and longs, not ints, in
        various logXXX primitives.  Thanks Eric Moore!

Tue Mar  7 08:05:22 2000  Greg J. Badros  <gjb@cs.washington.edu>

        * run-test, remaining-docs-needed:  Added these scripts.  The
        second one is only temporary until the docstring additions are
        complete.   run-test may best live on, but is here mostly for
        convenience and awareness for now.

        * hash.c: Docs, minor cleanup patch from Dirk Herrman.

Thu Mar  2 16:06:58 2000  Greg J. Badros  <gjb@cs.washington.edu>

        * error.h, error.c: Added `scm_wrong_type_arg_msg' to support
        displaying the expected type.  Use SCM_LISTn in a couple places
        instead of scm_cons-ing by hand.

        * __scm.h: Added SCM_ASSERT_TYPE macro.

        * validate.h, scm_validate.h: Added the former, as a renamed
        version of the latter with SCM_ASSERT_TYPE used in
        SCM_MAKE_VALIDATE (instead of just SCM_ASSERT)

        * Makefile.am: Rename scm_validate.h to validate.h.

        * *.c, *.h: Include validate.h, not scm_validate.h (old name's
        prefix was superfluous).

Thu Mar  2 15:33:12 2000  Greg J. Badros  <gjb@cs.washington.edu>

        * hashtab.c: Improved documentation for lots of functions.  Added
        handwritten docs for `hash-fold'.

Thu Mar  2 15:13:25 2000  Greg J. Badros  <gjb@cs.washington.edu>

        * list.c: Added hand-written docs for `del{q,v,ete}1!'.

Thu Mar  2 12:38:30 2000  Greg J. Badros  <gjb@cs.washington.edu>

        * list.c: Moved append docs to append! Thanks Dirk Hermann.  Also,
        added append docs from R4RS.

        * strings.c: Docstring typo fix, + eliminate unneeded IMP tests.
        Thanks Dirk Hermann!

        * chars.h: Provide SCM_CHARP, SCM_CHAR, SCM_MAKE_CHAR and
        deprecate SCM_ICHRP, SCM_ICHR, SCM_MAKICHR.  Thanks Dirk Hermann!

        * *.h, *.c: Use SCM_CHARP, SCM_CHAR, SCM_MAKE_CHAR throughout.
        Drop use of SCM_P for function prototypes... assume an ANSI C
        compiler.  Thanks Dirk Hermann!

Sat Feb 19 12:20:12 2000  Greg J. Badros  <gjb@cs.washington.edu>

        * ports.c: Made `set-port-column!' and `set-port-line!' each
        return SCM_UNSPECIFIED instead of a (not-scheme-object) integer
        that caused a seg fault.  Also fixed `set-port-column!'s
        docstring.  Thanks Han-Wen Nienhuys for finding the bug!

Sun Feb 13 19:11:42 2000  Greg J. Badros  <gjb@cs.washington.edu>

        * arbiters.c, eq.c, gc.c, guardians.c, list.c, ports.c, print.c,
        regex-posix.c, scmsigs.c, stime.c, strings.c, variable.c, stime.c,
        strings.c, variable.c:  Added lots of documentation, cleaned up
        some existing documentation.  Occasionally changed formal params
        to match docs.  Also folded an #ifdef into the inners of a
        primitive instead of having two copies of the primitive
        (`get-internal-real-time', from stime.c)

Sun Feb 13 18:12:19 2000  Greg J. Badros  <gjb@cs.washington.edu>

        * ports.c: Added docs for primitives missing them.  Written by
        hand.

Sun Feb 13 09:40:36 2000  Greg J. Badros  <gjb@cs.washington.edu>

        * guile-doc-snarf.in: Use ${AWK} -f guile-func-name-check, not
        just execing guile-func-name-check.  Thanks Michael Livshin!

Thu Feb 10 11:43:23 2000  Greg J. Badros  <gjb@cs.washington.edu>

        * guile-snarf.awk.in: Tweak to work with Sun/HP awk, removed some
        dead code.  Patch from Michael Livshin.

        * guile-doc-snarf.in: Tweak to work with Sun/HP sh.  Patch from
        Michael Livshin.

2000-02-09  Gary Houston  <ghouston@arglist.com>

        * init.c (scm_init_standard_ports): when stdout is a tty, make the
        current-output-port unbuffered by default.  this is less confusing
        for interactive use.  it was line-buffered because of a
        performance problem with unbuffered ports, but I think it will be
        OK now.

2000-02-08  Gary Houston  <ghouston@arglist.com>

        * __scm.h: don't define long_long or ulong_long if HAVE_LONG_LONGS
        is not defined.

        * stime.c (scm_localtime, scm_mktime): if neither HAVE_TM_ZONE nor
        HAVE_TZNAME are defined, use an empty string instead of giving two
        spurious compile-time errors.

Tue Feb  8 13:57:46 2000  Greg J. Badros  <gjb@cs.washington.edu>

        * ports.c: Doc patches from Richard Kim.  Pasted from MIT Scheme.
        Thanks Richard!

Mon Feb  7 09:07:31 2000  Greg J. Badros  <gjb@cs.washington.edu>

        * macros.c: Doc patches from Richard Kim.  Pasted from scm.texi.

Sun Feb  6 20:26:21 2000  Greg J. Badros  <gjb@cs.washington.edu>

        * pairs.c: Doc patches from Richard Kim.  Pasted from MIT Scheme
        (which is GNU GPL'd).

2000-01-31  Gary Houston  <ghouston@arglist.com>

        * strings.h: don't use SCM_P.  don't include <string.h>.
        * error.c, gh_data.c, ports.c, script.c, strop.c: include <string.h>.

        * strings.c (scm_string_ref): make the 2nd argument compulsory.
        previously it defaulted to zero for no good reason that I can see.
        use a local variable for SCM_INUM (k).  replace
        SCM_VALIDATE_INUM_DEF with SCM_VALIDATE_INUM_COPY.

        (scm_makfromstr): cosmetic changes.

        (scm_string): Accept only chars in the list, not strings, for
        conformance to R5RS (particularly for list->string, which is
        supposed to be the inverse of string->list.)  remove
        SCM_DEFER_INTS/SCM_ALLOW_INTS, which is unnecessary since
        scm_makstr handles the cell allocation.  when reporting wrong-type
        arg, don't report the position as 1.

        * posix.c (scm_init_posix): intern PIPE_BUF if it's defined.

2000-01-29  Gary Houston  <ghouston@arglist.com>

        * posix.c (scm_pipe): rewrote the docstring.

        * filesys.c (scm_select, retrieve_select_type, get_element,
        fill_select_type, set_element): modified so that Scheme
        "select" tests port buffers for the ability to provide input
        or accept output.  Previously only the underlying file descriptors
        were checked.  Rewrote the docstring.

Thu Jan 27 10:14:25 2000  Greg J. Badros  <gjb@cs.washington.edu>

        * vectors.c, symbols.c, strorder.c: Documentation cut and pasted
        from Gregg Reynolds.  Thanks Gregg!

Thu Jan 27 09:59:38 2000  Greg J. Badros  <gjb@cs.washington.edu>

        * strop.c (scm_i_index): Obfuscated commented-out SCM_DEFINE by
        adding "x" prefix to the line so that guile-func-name-check
        doesn't complain unnecessarily.

Wed Jan 26 17:33:52 2000  Greg J. Badros  <gjb@cs.washington.edu>

        * throw.c: Factor out an #ifdef/#else/#endif choice more finely
        for maintainability.

        * strop.c: Documentation added by Gregg A. Reynolds.   Pasted in
        from qdocs, RnRs.

Wed Jan 26 10:02:11 2000  Greg J. Badros  <gjb@cs.washington.edu>

        * tag.c:  Added doc for `tag', but mark as deprecated since Mikael
        suggests removing tag.c altogether (and using a new `class-of'
        instead).

        * strings.c:  Added documentation from Gregg A. Reynolds.  Edited
        a bit by me to use FOO instead of @var{foo} and to have the
        summary come before preconditions on input.  Also dropped trailing
        (rnrs) note.

        * gsubr.c: Do not use SCM_DEFINE for `gsubr-apply'. Register the
        function with scm_make_subr_opt w/ last arg of 0 so it is not
        visible at the Scheme level. Mikael says that this is the right
        thing because the first arg to the proc is the guts of a compiled
        closure and shouldn't be exposed to the Scheme level.

Tue Jan 25 17:15:47 2000  Greg J. Badros  <gjb@cs.washington.edu>

        * sort.c: typo in comment fixed.

        * keywords.c: Added documentation.

        * guardians.c: Added documentation (could be better).

        * gc.c: Added docs for gc-set-debug-check-freelist.

        * eq.c: Added docs for eq?, eqv? equal? abridged from R4RS.

        * boolean.c: Added docs for `not', `boolean?' (by hand).

Tue Jan 25 13:28:56 2000  Greg J. Badros  <gjb@cs.washington.edu>

        * random.c: Added documentation, from SLIB page:
        http://angela.ctrl-c.liu.se/~calle/scheme/slib_toc.html

Mon Jan 24 17:50:20 2000  Greg J. Badros  <gjb@cs.washington.edu>

        * variable.c, version.c:  Added documentation, written by hand
        since I could not find anything already written that was
        relevant.

2000-01-23  Gary Houston  <ghouston@arglist.com>

        * filesys.c (scm_chown): omit port/fdes support if HAVE_FCHOWN is
        not defined (thanks to Richard Y. Kim).

Thu Jan 20 13:00:38 2000  Greg J. Badros  <gjb@cs.washington.edu>

        * Makefile.in: Removed, this is auto-generated.

Thu Jan 20 11:33:47 2000  Dirk Hermann <dirk@ida.ing.tu-bs.de> --applied 01/20/00 gjb

        * list.c: Put some variable initialization code at the point of
        declaration; Added a comment for list*; Formatting changes.

        * load.c: use SCM_NNULLP to make sure the end of a list is not
        reached yet.

2000-01-18  Mikael Djurfeldt  <mdj@mdj.nada.kth.se>

        * backtrace.c (scm_display_error_message): Bugfix: Don't use
        result of scm_list_p as C boolean.
        (scm_display_error_message, scm_set_print_params_x): Use new
        validation macros. (Thanks to Dirk Herrmann.)

        * net_db.c (scm_resolv_error): Cast result from hstrerror.

        * strports.c (st_end_input): Inserted parenthesis to get operator
        grouping correct.

        * list.h (scm_init_list): Removed SCM_P around prototypes.

        * fports.c, list.c, numbers.c, ports.c, stime.c, symbols.c,
        filesys.c, posix.c: Converted docstrings to ANSI C format and
        escaped " occurring inside string literals.

Tue Jan 18 13:21:08 2000  Mikael Djurfeldt  <mdj@r11n07-s.pdc.kth.se>

        * posix.c (scm_mknod): Escape " occuring inside docstring.

2000-01-18  Mikael Djurfeldt  <mdj@mdj.nada.kth.se>

        * alist.c, chars.c, debug.c, dynl.c, dynwind.c, error.c, eval.c,
           evalext.c, filesys.c, gc.c, hash.c, hashtab.c, ioext.c,
           keywords.c, list.c, load.c, macros.c, net_db.c, numbers.c,
           objprop.c, ports.c, posix.c, print.c, procprop.c, procs.c,
           ramap.c, regex-posix.c, root.c, scmsigs.c, simpos.c, socket.c,
           stacks.c, stime.c, strings.c, strop.c, strports.c, struct.c,
           symbols.c, throw.c, unif.c, vectors.c, version.c, vports.c,
           weaks.c: Converted docstrings to ANSI C format.

        * filesys.c (scm_chmod), simpos.c (scm_system), version
        (scm_version), vports (scm_make_soft_port): Escape " occuring
        inside docstring.

Mon Jan 17 11:41:22 2000  Greg J. Badros  <gjb@cs.washington.edu>

        * scm_validate.h: Added SCM_VALIDATE_ULONG_COPY,
        SCM_VALIDATE_LONG_COPY

        * numbers.c: Use SCM_VALIDATE_ULONG_COPY, instead of
        SCM_VALIDATE_INUM_COPY to let bigger numbers be used.  Rename a
        couple of formal arguments (and fix their uses) to make arguments
        match the documentation.

2000-01-14    <mstachow@alum.mit.edu>

        * Makefile.am: Augment path when running guile-doc-snarf so
        guile-func-name-check is found.

Fri Jan 14 09:34:55 2000  Greg J. Badros  <gjb@cs.washington.edu>

        * scm_validate.h (SCM_NUM2LONG_DEF): Fix this macro to just use
        def, not SCM_MAKINUM(def);  thanks Janis Bzerins!

Wed Jan 12 00:06:53 2000  Greg J. Badros  <gjb@cs.washington.edu>

        * net_db.c (s_scm_inet_makeaddr): Use SCM_NUM2ULONG since that's
        the way guile-1.3.4 worked, but #if 0 out the version using
        SCM_VALIDATE_INUM_COPY for stricter testing.

Tue Jan 11 18:24:18 2000  Greg J. Badros  <gjb@cs.washington.edu>

        * guile-doc-snarf.in: Use new $fullfilename for running
        guile-func-name-check, and put "$fullfilename" and "$filename" in
        quotes at uses to make sure re-splitting on whitespace does not
        occur (so filenames w/ embedded whitespace would work okay, though
        I sure hope we never have to deal with that! :-) ).  Thanks to
        Mikael for pointing out the source_dir != build_dir was broken.

Tue Jan 11 17:42:40 2000  Greg J. Badros  <gjb@cs.washington.edu>

        * scm_validate.h: Added SCM_NUM2LONG_DEF macro.  Make
        SCM_OUT_OF_RANGE use SCM_MAKINUM, not scm_long2num.  Added
        SCM_COERCE_ROSTRING macro.  Added SCM_VALIDATE_NONEMPTYLIST
        macro.  Fix SCM_VALIDATE_STRINGORSUBSTR macro to not use SLOPPY
        variants.

        * ports.c (scm_port_closed_p): Validate that the arg is a PORT,
        then return whether it's an open port (was validating that it was
        an open port -- this was a bug I introduced back in December, but
        my careful reading of diffs caught it).

        * numbers.c: Recombine the two conditional-compilation paths for
        all the log* primitives -- they were split based on #ifndef
        scm_long2num;  factored out a SCM_LOGOP_RETURN macro, and fixed
        some bugs and inconsistencies in the two sets of implementations.
        (scm_lognot) Fixed *atrocious* re-use of a SCM as an integer!

        * ioext.c: Use SCM_ASSERT_RANGE in a couple places, and
        SCM_VALIDATE_INUM_COPY once where it should've been used.

        * fluids.c (scm_internal_with_fluids): Use
        SCM_VALIDATE_LIST_COPYLEN.

        * filesys.c: Use SCM_NUM2LONG instead of SCM_VALIDATE_INUM_COPY;
        this is questionable as it relaxes type safety, but other changes
        were useful and all SCM_NUM2LONG's should probably be
        revisited. Use SCM_OUT_OF_RANGE, SCM_WRONG_TYPE_ARG.

        * evalext.c: line-break change on 1 line.

        * eval.c (nconc2last): Takes a non-empty list as its first
        argument, not just a list.

        * dynl.c: Use new SCM_COERCE_ROSTRING macro.

Tue Jan 11 15:44:23 2000  Greg J. Badros  <gjb@cs.washington.edu>

        * dynl.c, feature.c, filesys.c, fports.c, list.c, load.c,
        net_db.c, sort.c, stacks.c, unif.c: Use SCM_WTA, SCM_MISC_ERROR
        where possible.

        * symbols.c (scm_sysintern0): Fixed the function name in a
        scm_misc_error invocation.

        * print.c (scm_simple_format): Do not need SCM_COERCE_SUBSTR, and
        use scm_return_first to ward off latent GC bug that Mikael caught.

        * async.c: Use SCM_VALIDATE_ASYNC_COPY one place where it wasn't
        used before but should've been.

2000-01-12  Mikael Djurfeldt  <mdj@thalamus.nada.kth.se>

        * snarf.h (SCM_PROC1): Replaced SCM (*) (...) with
        SCM_FUNC_CAST_ARBITRARY_ARGS.

Tue Jan 11 13:44:07 2000  Greg J. Badros  <gjb@cs.washington.edu>

        * guile-func-name-check.in: Added this script to statically check
        #define FUNC_NAME, #undef FUNC_NAME in the source.

        * sort.c, posix.c: Fix #undef FUNC_NAME lines to not have trailing
        redundant comment, semicolon; caught by new guile-func-name-check
        script.

        * debug.c: Fix mistaken #define FUNC_NAME for scm_make_iloc.
        Caught by new guile-func-name-check-script.

        * Makefile.am: Added guile-func-name-check to bin_SCRIPTS

        * ramap.c: Fix #if 0'd out code to be syntactically acceptable to
        guile-func-name-check.

        * guile-doc-snarf.in: Run guile-func-name-check on the file before
        doing the snarf.

Tue Jan 11 11:31:10 2000  Greg J. Badros  <gjb@cs.washington.edu>

        * fports.c, ports.c, ports.h, strports.c, vports.c: Make write
        port function take const void*, not void*.

Tue Jan 11 11:18:07 2000  Greg J. Badros  <gjb@cs.washington.edu>

        * scm_validate.h, chars.c, ports.c, print.c, read.c, strings.c,
        strop.c: Use SCM_VALIDATE_ICHR, SCM_VALIDATE_ICHR_COPY instead of
        SCM_VALIDATE_CHAR, SCM_VALIDATE_CHAR_COPY.  Change made for
        consistency with the other macros dealing with immediate
        characters.  (Similar to INT -> INUM change a week or so ago).

Tue Jan 11 10:41:46 2000  Greg J. Badros  <gjb@cs.washington.edu>

        * dynl.c, error.c, eval.c, feature.c, filesys.c, fports.c, list.c, load.c,
        net_db.c, read.c, socket.c: Update error messages to use ~A for
        %s, ~S for %S to work with new `simple-format' format and be
        standardized better.

        * print.h, print.c (scm_simple_format): Added `simple-format'
        primitive.  It's the old scm_display_error, with ARGS now a rest
        parameter, and the destination first instead of last (and a couple
        new capabilities inspired by `format' -- #t as destination means
        current-output-port, #f means return the formatted text as a
        string.

        * gh.h, gh_data.c, ports.h, ports.c: Added some missing const specifications.

        * backtrace.c (scm_display_error_message): Rewrote to use
        scm_simple_format() procedure.

        * __scm.h: Added commented-out #define of GUILE_DEBUG_FREELIST

2000-01-09  Marius Vollmer  <mvo@zagadka.ping.de>

        Finally applied the libltdl patch from Thomas Tanner, with slight
        modifications.

        * DYNAMIC-LINKING: Removed because it is obsolete.
        * dynl.c: Use ANSI prototypes.
        (sysdep_dynl_link): Use lt_dlopenext instead of lt_dlopen.
        * scmconfig.h.in: Do not change, as it is automatically generated.

    1999-07-25  Thomas Tanner  <tanner@ffii.org>

            * dynl-dl.c, dynl-dld.c, dynl-shl.c, dynl-vms.c: deleted
            (obsolete)
            * Makefile.am: likewise, add INCLTDL (libltdl headers) to
            INCLUDES, set dlpreopened files in LDFLAGS, link libguile
            against libltdl
            * dynl.c: use libltdl if DYNAMIC_LINKING is enabled,
            * guile.c: register preloaded modules
            * scmconfig.h.in: remove obsolete symbols

2000-01-09  Gary Houston  <ghouston@arglist.com>

        * These changes should make it unnecessary to call tzset from
        Scheme after modifying the TZ environment variable, even if the
        system date facilities cache the value.
        * stime.c (setzone, scm_localtime): added comments.
        (tzset): don't define a noop tzset macro if HAVE_TZSET not defined.
        (setzone): don't call tzset.
        (restorezone): call tzset only if HAVE_TZSET is defined.
        (scm_tzset): don't define if HAVE_TZSET not defined.  Change the
        doc string to indicate that this procedure isn't likely to do
        anything useful.
        (scm_localtime, scm_strftime, scm_mktime): call tzset if
        LOCALTIME_CACHE is defined.

2000-01-09  Mikael Djurfeldt  <mdj@thalamus.nada.kth.se>

        * posix.c (scm_sync): Return SCM_UNSPECIFIED.

2000-01-09  Gary Houston  <ghouston@arglist.com>

        * eval.c: define scm_unbound_variable_key ('unbound-variable).
        scm_lookupcar1: throw an error with key 'unbound-variable instead
        of 'misc-error when an unbound variable is encountered.

        * filesys.c (scm_mkdir, scm_rmdir, scm_getcwd, scm_select,
        scm_symlink, scm_readlink, scm_lstat),
        posix.c (scm_setpgid, scm_setsid, scm_ctermid, scm_tcgetpgrp,
        scm_tcsetpgrp, scm_uname, scm_setlocale, scm_mknod, scm_nice,
        scm_sync),
        simpos.c (scm_system),
        stime.c (scm_times, scm_strptime):
        move the HAVE_XXX feature tests out of the procedure bodies.
        don't use SCM_SYSMISSING.
        scm_validate.h (SCM_SYSMISSING): removed.
        error.h, error.c (scm_sysmissing): comment that this is deprecated.
        see ChangeLog entry for 1999-12-28.

Sat Jan  8 19:52:04 2000  Greg J. Badros  <gjb@cs.washington.edu>

        * scm_validate.h (SCM_VALIDATE_BOOL_COPY): Fix typo.

Sat Jan  8 17:06:46 2000  Greg J. Badros  <gjb@cs.washington.edu>

        * backtrace.c: Fix spelling typo in a comment.

        * snarf.h: Use new SCM_DOCS macro to encapsulate the non SCM_INIT
        text.  Reformatted some of the expansions.

Fri Jan  7 15:50:46 2000  Greg J. Badros  <gjb@cs.washington.edu>

        * scm_validate.h (SCM_OUT_OF_RANGE): Use scm_out_of_range_pos to
        report the position of the argument.

        * error.h, error.c (scm_out_of_range_pos):  Added this function to
        take extra "pos" argument, the position number of the errant
        argument.

        * debug.c: Use SCM_OUT_OF_RANGE instead of scm_out_of_range.

        * snarf.h: Use SCM_HERE and SCM_INIT as names, not SCM_NOTSNARF
        and SCM_SNARFING.  Also put the %%% in the SCM_INIT since Mikael
        prefers that and I'm reasonably indifferent.

Fri Jan  7 15:03:32 2000  Greg J. Badros  <gjb@cs.washington.edu>

        * snarf.h: Factor out differences between C++ and non-C++ into
        SCM_FUNC_CAST_ARBITRARY_ARGS macro.  Modify all the snarf macro
        definitions to use SCM_NOTSNARF and SCM_SNARFING macros (like
        Mikael's macros, below, but changed names and SCM_SNARFING no
        longer expands to include %%% -- that must appear in the argument
        so that the token appears at the call-site as a reminder).

2000-01-07  Mikael Djurfeldt  <mdj@thalamus.nada.kth.se>

        * snarf.h (SCM_INSITU, SCM_INIT): New snarf macros for use in user
        snarf macro definitions.

2000-01-06  Mikael Djurfeldt  <mdj@mdj.nada.kth.se>

        * chars.c (scm_integer_to_char): Use Greg's nice
        SCM_VALIDATE_INUM_RANGE macro for argument checking for closer
        adherence to R5RS.

Thu Jan  6 11:48:49 2000  Greg J. Badros  <gjb@cs.washington.edu>

        * *.c, snarf.h: Replace GUILE_PROC1 with SCM_DEFINE1 throughout.

Thu Jan  6 11:22:53 2000  Greg J. Badros  <gjb@cs.washington.edu>

        * Makefile.am (ETAGS_ARGS): Switch to SCM_DEFINE, SCM_DEFINE1
        instead of GUILE_PROC.

Thu Jan  6 11:21:49 2000  Greg J. Badros  <gjb@cs.washington.edu>

        * alist.c: Do not report mismatch errors on some uses of `tmp' (do
        this by using SCM_ARG2 instead of `2' in the SCM_VALIDATE_CONS
        macro call.

Thu Jan  6 09:54:33 2000  Dirk Herrmann <dirk@ida.ing.tu-bs.de> --gjb applied

        * scm_validate.h: Remove some redundant NIMP tests.

        * alist.c: minimize scope of the tmp variables, and initialize
        them when declared. The strange SCM_NIMP tests are replaced by
        SCM_CONSP tests that more closely reflect the intended semantics.
        However, we don't get a performance penalty here, because the
        SCM_CONSP test was performed by the ALISTCELL test anyway.  * The
        extremely ugly use of ASRTGO macros was removed: The calls to
        ASRTGO were not encapsulated by "#ifndef SCM_RECKLESS", but got a
        label parameter that only exists when SCM_RECKLESS is not defined.
        This works, because ASRTGO itself is defined in a way that it only
        makes use of the label parameter if SCM_RECKLESS is not defined
        (shudder!).  Does guile make at all use of the possibility to
        define SCM_RECKLESS?  * Codesize is likely to be reduced, since
        instead of two calls to SCM_ASSERT performed by the ALISTCELL test
        we now only get one test.

        * list.c: Use SCM_NNULLP, not SCM_NIMP as appropriate.  Also use
        SCM_NULLP instead of SCM_IMP.  Drop use of "register" keyword on
        some variables in `list?'.  Fix `reverse' and `reverse!'
        primitives to handle improper lists better.

Wed Jan  5 11:24:53 2000  Greg J. Badros  <gjb@cs.washington.edu>

        * *.[ch]: Whitespace changes -- added space after SCM_VALIDATE_*
        macros and SCM_DEFINE macros to match GNU coding standards.

Wed Jan  5 11:04:24 2000  Greg J. Badros  <gjb@cs.washington.edu>

        * *.[ch]: Replace GUILE_PROC w/ SCM_DEFINE.

Wed Jan  5 10:59:06 2000  Greg J. Badros  <gjb@cs.washington.edu>

        * *.[ch]:  Replace SCM_VALIDATE_INT w/ SCM_VALIDATE_INUM for
        better consistency with the names of other SCM_VALIDATE_ macros
        and better conformance to guile naming policy.

Wed Jan  5 10:50:39 2000  Greg J. Badros  <gjb@cs.washington.edu>

        * ports.c (s_scm_close_all_ports_except): Use SCM_ARG1 in a
        SCM_VALIDATE instead of 1 to avoid a check on the argument (since
        it's not the actual name of the formal).

        * guile-snarf.awk.in: Do argument/number mismatch checking and
        print warnings in an Emacs compile-mode parseable format.

        * struct.c: Use SCM_ASSERT_RANGE instead of SCM_ASSERT w/
        SCM_OUTOFRANGE as 3rd argument.

        * random.c: Fix argument/number mismatch (that I introduced :-( ).

        * __scm.h: Do not #define SCM_ARG* when snarfing;
        lets us distinguish between 1 and SCM_ARG1 when snarfing as only
        the former (using the number) requires the argument to match the
        formal in the current argument snarfing check.

        * snarf.h: Give new definition of SCM_ASSERT when in
        snarfing mode to output a lexically-identifiable sequence that the
        guile-snarf.awk script uses to verify argument/position matching.

        * ramap.c: Remove extraneous #undef FUNC_NAME.

Wed Jan  5 08:36:38 2000  Greg J. Badros  <gjb@cs.washington.edu>

        * guile-doc-snarf.awk.in: Removed -- guile-snarf.awk.in is the
        current version of the same functionality; it writes the .x output
        to stdout instead of directly into the file.

Wed Jan  5 08:15:04 2000  Greg J. Badros  <gjb@cs.washington.edu>

        * unif.c, symbols.c, strings.c, stacks.c, random.c, print.c,
        posix.c:  Eliminated a bunch of SCM_NIMP(..)s that are now
        redundant with the safer macros.  Patch from Dirk Hermann applied
        by hand. Thanks Dirk!

        * scm_validate.h: Added SCM_VALIDATE_VECTOR_OR_DVECTOR for some
        uses in random.c.

        * ramap.c: whitespace change.

Tue Jan  4 14:21:35 2000  Greg J. Badros  <gjb@cs.washington.edu>

        * options.c, objects.c, keywords.c, gc.c: Some redundant SCM_NIMP
        removals from Dirk Hermann.

        * alist.c: Rename formals to match the parameter names in the
        documentation, updates to documentation.  Thanks Dirk Hermann!

2000-01-04  Mikael Djurfeldt  <mdj@mdj.nada.kth.se>

        * eval.c (SCM_CEVAL): Reverse order of
        scm_stack_checking_enabled_p and SCM_STACK_OVERFLOW_P
        (Thanks to Brad Knotwell.)

Mon Jan  3 08:30:02 2000  Greg Harvey  <Greg.Harvey@thezone.net> (applied --01/03/00 gjb)

        * gc.c (scm_debug_newcell): Added SCM_SETCAR of the newly
        allocated cell.

        * pairs.h: Added a comment about the need for the SCM_SETCAR in
        SCM_NEWCELL macro.

Mon Jan  3 08:25:19 2000  Greg J. Badros  <gjb@cs.washington.edu>

        * dynl-vms.c, debug.c, coop-threads.c, backtrace.c, eval.c: More
        SCM_NIMP tests that were redundant are now eliminated.  Patches
        from Dirk Hermann applied by hand.

The ChangeLog continues in the file: "ChangeLog-1996-1999"