*** empty log message ***

[bpt/guile.git] / libguile / ChangeLog

1998-07-26  Jim Blandy  <jimb@zwingli.cygnus.com>

        * Makefile.am: Adjust for new thread configuration system.
        (INCLUDES): Include the value of THREAD_CPPFLAGS.
        (guile_LDADD, check_ldadd): THREAD_LIBS_LOCAL has been renamed from
        THREAD_LIBS.
        (THREAD_LIBS): Definition deleted; automake will generate such
        things automatically.
        * Makefile.in: Regenerated.

1998-07-23  Jim Blandy  <jimb@zwingli.cygnus.com>

        Simplify smob and port marking; set the mark bit in the generic
        marking code, and make marker routines only responsible for
        turning up outgoing pointers.
        * gc.c (scm_gc_mark): Set the mark bit on ports and smobs here,
        before calling the marking function.  Don't call the marking
        function if it's zero.
        * markers.c (scm_mark0): Just return #f.  This function isn't
        necessary at all now, but it's harmless to call it.  We'll leave
        it in so other folks' code doesn't croak at link time.
        (scm_markcdr): Don't call SCM_SETGC8MARK.
        * async.c (mark_async): Don't call SCM_SETGC8MARK.
        * dynl.c (mark_dynl_obj): Same.
        * root.c (mark_root): Same.
        * srcprop.c (marksrcprops): Same.
        * unif.c (markra): Same.
        * variable.c (scm_markvar): Same.
        * ports.c (scm_markstream): Same.
        (void_port_ptob): Specify zero for our marking function.
        * debug.c (debugobjsmob): Same.
        * dynwind.c (guardsmob): Same.
        * filesys.c (dir_smob): Same.
        * fluids.c (fluid_smob): Same.
        * fports.c (scm_fptob, scm_pipob): Same.
        * mallocs.c (mallocsmob): Same.
        * regex-posix.c (regex_t_smob): Same.
        * smob.c (freecell, flob, bigob): Same.
        * threads.c (thread_smob, mutex_smob, condvar_smob): Same.
        * throw.c (jbsmob, lazy_catch_funs): Same.

1998-07-17  Mikael Djurfeldt  <mdj@barbara.nada.kth.se>

        * eval.c (scm_copy_tree): Reverted last change: `eval' uses
        scm_copy_tree on code in order not to let memoized code to leak
        out.  Thus, scm_copy_tree needs to copy vectors as well since
        quasiquote can introduce evaluated code also inside vector
        constants.

1998-07-17  Mikael Djurfeldt  <mdj@barbara.nada.kth.se>

        * eval.c (scm_copy_tree): Removed ability to copy vectors.

        * gh_data.c, gh.h (gh_ints2scm, gh_longs2ivect,
        gh_ulongs2uvect): New procedures.  (Complements gh_doubles2scm and
        gh_doubles2dvect.)

        * unif.c: Say that ivect and uvect are of type signed and unsigned
        long instead of int in commentary so that it correctly describes
        the implementation.

1998-07-12  Mikael Djurfeldt  <mdj@barbara.nada.kth.se>

        * stime.c: Removed declaration of strptime.  (It should be
        declared by the system headers.  If it turns out that some systems
        don't, we'll handle that then.)  (Thanks to Greg Troxel.)

        * stime.h: Renamed TIMEH --> STIMEH

        * backtrace.c (scm_display_error, scm_display_backtrace): In order
        to increase portability, don't use structure assignment.
        (Thanks to Nicolas Neuss.)

        * iselect.c: Use LONG_MAX instead of ULONG_MAX for increased
        portability.
        (finalize_fd_sets): Added empty statement after last case label.
        (Thanks to Nicolas Neuss.)

        * gc.c (scm_igc): Changed //-comment into /*-comment.  (Thanks to
        Nicolas Neuss.)

Sat Jul 11 22:08:21 1998  Mikael Djurfeldt  <mdj@totoro.red-bean.com>

        * init.c, readline.c: OK, I won't have these readline.x bug
        reports anymore.  We've had them since April.  The current reason
        is a completely unintelligible failure of totoro.red-bean.com to
        do the test for rl_getc_function in libreadline correctly.  This
        kludge overrides the test if we're on totoro so that the snapshot
        generation process can work.

        * readline.c: Define a strdup replacement if not existent on system.

1998-07-12  Mikael Djurfeldt  <mdj@barbara.nada.kth.se>

        * vectors.c, vectors.h (scm_make_vector): Removed third argument.
        This change makes scm_make_vector R5RS compatible.  We cannot keep
        the third argument since people want to be able to deduce the form
        of the C function call only by looking at R5RS.  (At the same time
        we have removed some unnecessary complexity!)

        * eval.c, filesys.c, fluids.c, gc.c, gh_data.c, init.c, kw.c,
        net_db.c, posix.c, print.c, regex-posix.c, scmsigs.c, socket.c,
        stime.c, symbols.c, unif.c, vectors.c, weaks.c: Removed third
        argument in call to scm_make_vector.
        
1998-07-02  Mikael Djurfeldt  <mdj@mdj.nada.kth.se>

        * numbers.h (SCM_NUM2DBL): New macro.  Complements SCM_NUMBERP.
        This macro is useful in applications.

1998-06-21  Mikael Djurfeldt  <mdj@barbara.nada.kth.se>

        * load.c (scm_internal_parse_path): Renamed from scm_parse_path.
        (scm_parse_path, scm_search_path): New Scheme level procedures.

        * load.h (scm_internal_parse_path, scm_parse_path,
        scm_search_path): Declared.

1998-06-18  Mikael Djurfeldt  <mdj@mdj.nada.kth.se>

        * filesys.c (dirname, basename): New procedures.

        * init.c (scm_boot_guile_1): Removed condition around
        scm_init_options.

        * dynwind.c: #include "genio.h"; #include "smob.h"; Implemented a
        new data type (guards) for representation of C level guards and
        data on the wind chain.
        (scm_internal_dynamic_wind): New function.

        * dynwind.h: Declare scm_internal_dynamic_wind.
        
        * root.h (scm_root_state): Added scm_cur_loadp.

        * root.c (mark_root): Added comment about cur_loadp.

        * load.c: #include "dynwind.h";
        (scm_primitive_load): Use scm_inner_dynamic_wind to update
        scm_cur_loadp.

        * init.c (scm_init_standard_ports): Initialize scm_def_loadp.

        * ports.c (current-load-port): New procedure.

1998-06-09  Mikael Djurfeldt  <mdj@mdj.nada.kth.se>

        * ioext.c (scm_isatty_p): Accept any kind of data as argument.  If
        not a tty, return #f.

        * regex-posix.c (scm_regexp_exec): Free malloced memory.  (Thanks
        to Julian Satchell and Roland Kaufmann.)

        * gh.h (gh_memv, gh_member): Fixed typos in macro definitions.
        (gh_write):  Added declaration.  (Thanks to Eiichi Takamori.)

1998-06-07  Mikael Djurfeldt  <mdj@barbara.nada.kth.se>

        * debug.h, debug.c (scm_start_stack): New function.  Implements
        the guts of old scm_m_start_stack.

        * debug.c (scm_m_start_stack): Use scm_start_stack.

        * init.c (scm_start_stack, scm_restart_stack): Renamed to
        start_stack and restart_stack.  (These have static scope.)

1998-05-19  Mikael Djurfeldt  <mdj@mdj.nada.kth.se>

        * readline.c (rl_cleanup_after_signals, rl_free_line_state): New
        readline functions to come in release 2.3.  (Thanks to Chet
        Ramey.)
        (handle_errors): Use the above functions.

1998-05-12  Mikael Djurfeldt  <mdj@mdj.nada.kth.se>

        * readline.c: Improvements for readline support: Handle errors
        better; Implement before-read-hook.

1998-05-11  Mikael Djurfeldt  <mdj@mdj.nada.kth.se>

        * init.c (scm_boot_guile_1), readline.c: Test for
        HAVE_RL_GETC_FUNCTION instead of HAVE_LIBREADLINE.  (Need to
        assure that we have version >= 2.1.)

1998-05-11  Mikael Djurfeldt  <mdj@kenneth>

        * readline.c (scm_add_history): Bugfix: Do strdup before giving
        away the string to add_history.
        (completion_function): Do completion for readline. (Thanks to
        Andrew Archibald.)
        (scm_filename_completion_function): New procedure: Filename
        completer.
        (current_input_getc): New function.  Use this one instead of
        standard getc from readline.

        * throw.c, throw.h (scm_handle_by_throw): New function: This
        handler throws errors to next handler on the dynwind chain.

1998-05-09  Mikael Djurfeldt  <mdj@kenneth>

        * scmsigs.c (scm_usleep): Bugfix: Don't define j if it isn't
        used.

1998-05-03  Mikael Djurfeldt  <mdj@mdj.nada.kth.se>

        * procprop.c (scm_i_procedure_arity): New function.  Returns arity
        of procedure.
        (scm_procedure_properties): Modified to return arity together with
        other properties.
        (scm_procedure_property): Added the read-only property `arity'.
        (scm_set_procedure_property_x): It is an error to set the `arity'
        property.

        * gsubr.h, gsubr.c: Moved macros from gsubr.c to gsubr.h and added
        prefix SCM_; Made f_gsubr_apply global and added prefix scm_.

        * procprop.h (scm_sym_arity): New symbol.

        * objects.c (scm_set_object_procedure_x): New procedure: Use this
        to set the dispatch procedure of an operator or entity object.

        * objects.h (SCM_METACLASS_OPERATOR_LAYOUT, SCM_ENTITY_LAYOUT):
        Made procedure slots read-only.

        * eval.c (SCM_CEVAL): Moved scm_tc7_contin case above
        scm_tcs_cons_gloc case in zero args switch; Fixed args
        construction for operators in scm_tcs_cons_gloc case in two args
        switch.

1998-05-02  Mikael Djurfeldt  <mdj@mdj.nada.kth.se>

        * fluids.c: Removed use of assert.h (in order to avoid
        __eprintf).

        * Makefile.am (libguile_la_LDFLAGS): Added -export-dynamic.

        * dynl.c (maybe_drag_in_eprintf): Disabled through #ifdef 0.

        * eval.c (SCM_CEVAL): Do more thorough argument checking.  This
        change makes the evaluator safer at the cost of evaluation speed.
        It handles the case when the user has added a non-immediate
        improper end of the application form, e.g., `(+ 0 . x)'.
        (Earlier only cases like `(+ 0 . 0)' were handled.)  I've tried to
        minimize the extra cost as much as possible.  The new code is
        enclosed in #ifdef CAUTIOUS regions.  NOTE: This also fixes the
        problem with structs planted directly in the code (e.g. by a
        macro).  This no longer causes segmentation fault.  (Thanks to
        Eric Hanchrow.)
        
        * eval.c, eval.h (scm_eval_args, scm_deval_args): Take one extra
        arg `proc' in order to be able to throw errors; New argument
        checking code.

        * Removed extra #include "debug.h"

1998-04-25  Mikael Djurfeldt  <mdj@kenneth>

        * scmsigs.c: Declare usleep as returning void on some systems.
        (scm_usleep): Return SCM_INUM0 on those systems. (Thanks to Julian
        Satchell.)

        * coop.c (usleep): Return void on some systems.

1998-04-20  Mikael Djurfeldt  <mdj@mdj.nada.kth.se>

        * Makefile.am (libguile_la_LDFLAGS): Removed redundant -rpath.

        * coop.c: Changed return type of usleep to int.

        * scmsigs.c (scm_usleep): New procedure; Declare usleep if it
        isn't found in the OS.

        * iselect.h: #define scm_internal_select select if GUILE_ISELECT
        isn't enabled.  (Thought that I had made this change ages ago...)

        * iselect.c: Declare bzero if not defined by OS.

1998-04-19  Mikael Djurfeldt  <mdj@mdj.nada.kth.se>

        * dynl.c (scm_must_free_argv): Fixed memory leak due to negated
        condition.  (Thanks to John Tobey.)

        * continuations.c (scm_make_cont), debug.c (scm_make_memoized,
        scm_make_debugobj), eval.c (scm_makprom): SCM_DEFER/ALLOW_INTS -->
        A section.

        * __scm.h: Start the long-term project of moving to POSIX threads.
        Phase 1: Classification of all critical sections.
        (SCM_ENTER_A_SECTION, SCM_EXIT_A_SECTION): New macros: Delimiters
        for A sections.  (See comments in __scm.h for details.)

        * dynl.c: Only check that HAVE_DLOPEN is defined before loading
        dynl-dl.c; Test on HAVE_LIBDLD instead of HAVE_DLD.

1998-04-18  Mikael Djurfeldt  <mdj@mdj.nada.kth.se>

        * Makefile.am (BUILT_SOURCES): Added cpp_err_symbols.c,
        cpp_sig_symbols.c, libpath.h and versiondat.h to BUILT_SOURCES
        (libpath.h, versiondat.h): Replaced dependency on Makefile with
        dependencies on $(srcdir)/Makefile.in
        $(top_builddir)/config.status in order to avoid circularity.

        * script.c (scm_compile_shell_switches): Bugfix: Don't discount i
        from argc if argc was 0 initially.

        * Makefile.am (Makefile.am): Replaced THREAD_LIBS --> GUILE_LIBS
        in generation of libpath.h.

1998-04-15  Mikael Djurfeldt  <mdj@nada.kth.se>

        * Makefile.am (libguile_la_LDFLAGS): Bumped version number of
        libguile from 2 to 3.

1998-04-14  Mikael Djurfeldt  <mdj@nada.kth.se>

        * Makefile.am: Added .x-dependencies to variable BUILT_SOURCES.

1998-04-13  Mikael Djurfeldt  <mdj@kenneth>

        * ports.c (scm_port_line, scm_set_port_line_x, scm_port_column,
        scm_set_port_column_x, scm_port_filename,
        scm_set_port_filename_x): Removed optional arguments.  Added
        proper argument checking.

        * eval.c, eval.h, coop.c (scm_eval_stack, SCM_EVAL_STACK): Measure
        stack size in machine words.

        * unif.c (scm_uniform_vector_ref, scm_cvref, scm_array_set_x,
        rapr1): Use SCM_UCHARS instead of SCM_CHARS for strings.  (Thanks
        to Ole Myren Röhne.)

1998-04-12  Mikael Djurfeldt  <mdj@kenneth>

        * socket.c: Check for HAVE_UNIX_DOMAIN_SOCKETS instead of
        UNIX_DOMAIN_SOCKETS.  (Thanks to Lauri Alanko.)

        * gc.c (scm_gc_sweep): Count cells correctly.  (Thanks to Ben
        Caradoc-Davies.)

        * eval.c (SCM_CEVAL, SCM_APPLY): In SCM_IM_APPLY and in the
        procedure apply: Copy argument lists before pushing them unto the
        environment so that the environment won't get mutated due to
        manipulation of procedure arguments.  This should perhaps be
        regarded as a temporary solution until someone finds a more
        efficient one.  (Thanks to Maciej Stachowiak.)

1998-04-10  Mikael Djurfeldt  <mdj@kenneth>

        * script.c (scm_compile_shell_switches): Use "guile" as default
        zero arg if argc is NULL.

1998-04-02  Mikael Djurfeldt  <mdj@nada.kth.se>

        * script.c (scm_compile_shell_switches): Allow NULL argv if argc
        is zero.  (Thanks to Dirk Herrmann.)

1998-03-30  Mikael Djurfeldt  <mdj@nada.kth.se>

        * ports.c (scm_add_to_port_table): First line is now line 0
        (was 1).  (Interface changed according to suggestion by Per
        Bothner.)

        * backtrace.c (display_header): Add 1 to line and column numbers
        when presenting them to the user.

        * eval.h, eval.c, debug.h, debug.c (scm_evaluator_traps): Moved
        from debug.c --> eval.c

        * eval.h, eval.c (scm_eval_options_interface): New options
        interface.
        (SCM_EVAL_STACK): New option: Size of newly created stacks,
        i.e. stacks for new threads.
        
        * coop.c (COOP_STKSIZE): Use SCM_EVAL_STACK.

        * eval.c (unsafe_setjmp): Removed with #if 0.

        * gsubr.c (scm_gsubr_apply): Added dummy return to avoid compiler
        warning.

        * eval.c, numbers.c, unif.c, srcprop.c: Added a few curly braces
        to avoid compiler warnings.

        * dynl-dl.c (sysdep_dynl_func): Only define usymb if needed.

1998-03-28  Mikael Djurfeldt  <mdj@nada.kth.se>

        * throw.c (handler_message): Print message on current error port
        instead of default error port.  (Thanks to Maciej Stachowiak.)

Mon Mar  2 21:35:02 1998  Gary Houston  <ghouston@actrix.gen.nz>

        * ports.c (scm_add_to_port_table): allocate in units of 
        struct scm_port_table *, not struct scm_port_table.
        * posix.c (scm_close_pipe): remove the port from the port table
        and mark as closed.
        Thanks to Rob Engle for both fixes.

1998-02-06  Mikael Djurfeldt  <mdj@mdj.nada.kth.se>

        * iselect.h, iselect.c, coop.c, coop-threads.c, coop-threads.h,
        coop-defs.h, throw.c, backtrace.c: Added new copyright year 1998.

1998-02-02  Mikael Djurfeldt  <mdj@mdj.nada.kth.se>

        * throw.h: Removed jmpbuf arg in scm_catch_body_t.

        * backtrace.c (display_error_body, display_backtrace_body),
        coop-threads.c (scheme_body_bootstrip, c_body_bootstrip),
        gh_eval.c (eval_str_wrapper, eval_file_wrapper), init.c
        (invoke_main_func), root.c (cwdr_body), throw.c (cwss_body,
        scm_body_thunk, hbpca_body): Removed the second jmpbuf arg on body
        functions.

        * throw.c (scm_internal_catch, scm_internal_lazy_catch): Bodies
        don't receive the jmpbuf arg anylonger.
        (scm_catch): Don't accept a #f tag.
        (scm_throw): Check that key is a symbol.
        (scm_ithrow): Don't take a jmpbuf as key.  Don't check key arg.

Fri Jan 30 22:28:07 1998  Mikael Djurfeldt  <mdj@kenneth>

        * async.c (async_pending): Removed declaration.

1998-01-30  Mikael Djurfeldt  <mdj@mdj.nada.kth.se>

        *  dynwind.c (scm_wind_chain): New debug function.

        * coop-threads.c (scheme_launch_data, scheme_body_bootstrip,
        scheme_handler_bootstrip, scheme_launch_thread, c_launch_data,
        c_body_bootstrip, c_handler_bootstrip, c_launch_thread): Add an
        extra layer of functions around the body and handler of a thread.
        This extra layer makes sure that the handler is called in the
        dynamic context of the surround (= empty dynwind list), but under
        the *dynamic root* of the body.  We can not use the dynamic root
        of the surround since that root belongs to another thread => stack
        is not handled correctly.  It may seem ugly to use this extra
        layer, but the extra cost in terms of execution time is really
        negligible compared to the total amount of time required to create
        a thread, and it would reduce maintainability to duplicate the
        crucial and complicated steps performed by cwdr.

        * __scm.h (SCM_ASYNC_TICK): Removed thread switching code.
        (SCM_ALLOW_INTS): Added thread switching code before interrupts
        get re-enabled.  The important effect of this is that interrupts
        are blocked during thread switching so that thread data structures
        don't risk getting messed up by an unfortunate signal.
        (SCM_REDEFER_INTS, SCM_REALLOW_INTS): It turned out that gcc-2.8.0
        seems to do more aggressive optimization which actually move
        instructions around in these macros in a fatal way.  Therefore:
        Introduce Anthony's SCM_FENCE macro!  (And I who thought he was
        just superstitious...)
        (SCM_TICK): Maybe do a context switch and take care of asyncs.
        This macro should be used instead of SCM_ASYNC_TICK since the
        latter doesn't do context switches any more.

        * eval.c (scm_eval, scm_deval), eq.c (scm_equal_p): Use SCM_TICK
        instead of SCM_ASYNC_TICK.

        * coop.c, iselect.c: Since thread switches are now performed with
        interrupts masked, we can't use the old mechanism of delivering
        signals immediately when they arrive.  Signals must instead be
        delivered when the asyncs run *after* the end of the critical
        section in scm_internal_select.  But this also means after context
        switch so that the signal will be delivered to a different thread.
        To avoid this, I have changed the protocol of
        coop_wait_for_runnable_thread and friends so that they are allowed
        to return the original thread.  So, if a signal arrives during
        scm_internal_select, we won't any longer be forced do a context
        switch, but can remain in the same thread and deliver the signal
        to it.

        * async.c, async.h (asyncs_pending): Renamed asyncs_pending -->
        scm_asyncs_pending and made it global.

        * iselect.c: Small fixes.

        * coop.c (coop_mutex_init, coop_mutex_lock, coop_mutex_unlock,
        coop_condition_variable_init, coop_condition_variable_wait,
        coop_condition_variable_signal): Changed return type from `void'
        to `int'.  This is to adhere closer to the pthreads interface.
        This, in turn, is part of an attempt to provide C versions of the
        mutex and condition variable primitives which can be part of a
        frontend to COOP or pthreads.

        * coop.c (coop_mutex_destroy, coop_condition_variable_wait_mutex,
        coop_condition_variable_destroy): New functions.
        
        * coop-threads.c (scm_wait_condition_variable): Use
        coop_condition_variable_wait_mutex.

        * coop-threads.h, coop-defs.h (coop_q_t, coop_m, coop_c):
        Definitions moved to coop-defs.h.

        * coop-defs.h (scm_mutex_init, scm_mutex_lock, scm_mutex_unlock,
        scm_mutex_destroy, scm_cond_init, scm_cond_wait, scm_cond_signal,
        scm_cond_destroy): New C interface to mutecis and cond vars.

1998-01-24  Mikael Djurfeldt  <mdj@mdj.nada.kth.se>

        * error.c (scm_wta): Added support for SCM_ARG6 and SCM_ARG7.

        * iselect.c: Now several threads can wait on the same file
        descriptor.  The behaviour is compatible with OS select: All
        threads waiting for the fd return with the same status.

1998-01-23  Mikael Djurfeldt  <mdj@mdj.nada.kth.se>

        * coop-threads.c, threads.h (scm_spawn_thread): New function.
        Can spawn a thread from application C code.

1998-01-20  Mikael Djurfeldt  <mdj@mdj.nada.kth.se>

        * gh.h, gh_data.c (gh_doubles2scm, gh_doubles2dvect,
        gh_doubles2scm): New functions.

1998-01-15  Mark Galassi  <rosalia@nis.lanl.gov>

        * gh_eval.c (gh_eval_str): cleanup -- threw out the old
        commented-out version of gh_eval_str()

Sun Jan  4 02:23:36 1998  Gary Houston  <ghouston@actrix.gen.nz>

        * socket.c (scm_bind): free soka after use.

Sat Jan  3 20:55:07 1998  Gary Houston  <ghouston@actrix.gen.nz>

        * stime.c (tzvar): new variable.
        (setzone, restorezone, scm_localtime, scm_mktime, scm_strftime):
        avoid memory leaks when allocating.

1998-01-03  Jim Blandy  <jimb@totoro.red-bean.com>

        * iselect.h: Some systems require <sys/types.h> to get the FD_SET
        macro definitions.

        * gc.c, tags.h: Doc fixes.

1998-01-02  Mikael Djurfeldt  <mdj@mdj.nada.kth.se>

        * eval.c (macro-eval!): Removed.  This function was a design bug.
        It allowed memoized code to leak out to the scheme level.  Most
        things that you could do with `macro-eval!' can be done with
        `local-eval'.

1997-12-20  Tim Pierce  <twp@skepsis.com>

        * fports.c (scm_pipob): Use scm_generic_fgets for line i/o, since
        scm_fgets now depends on ftell(3) to know how many bytes were
        read.  Sigh.

1997-12-15  Tim Pierce  <twp@skepsis.com>

        * gh_data.c (gh_scm2newstr, gh_get_substr): Use RO macros for
        dealing with strings.

1997-12-13  Tim Pierce  <twp@skepsis.com>

        Make %read-line more suitable for implementing read-line efficiently.
        * ioext.c (scm_read_line): Strip the terminating newline from a
        string, and return a cons of the string and its terminator.

        * fports.c, fports.h (scm_fgets): Add `len' argument.  The length
        of the string that is read is stored in this memory location.
        * ports.c, ports.h (scm_generic_fgets, fgets_void_port): Same.
        * genio.c, genio.h (scm_do_read_line): Update caller.
        * ports.h (scm_ptobfuns): Update typedef.
        * fports.c (scm_fptob, scm_pipob): Update struct.

1997-12-08  Mikael Djurfeldt  <mdj@mdj.nada.kth.se>

        * filesys.c (set_element): Return file descriptor.
        (fill_select_type): Return the highest file descriptor.
        (scm_select): Tell select about the highest file descriptor.  On
        some systems the SELECT_SET_SIZE can be as much as 128 bytes.
        Therefore the extra overhead for calculating the maximum fd seems
        to be more than compensated.  Is this correct?  In any case,
        scm_internal_select will be much faster with this info.
        (scm_select, fill_select_type, set_element): Don't accept any kind
        of object in the file descriptor list or vector.

1997-12-07  Mikael Djurfeldt  <mdj@mdj.nada.kth.se>

        * iselect.c (finalize_fd_sets): Bugfix.

1997-12-06  Mikael Djurfeldt  <mdj@mdj.nada.kth.se>

        * filesys.c (scm_select): Don't use SCM_DEFER_INTS/SCM_ALLOW_INTS
        when using scm_internal_select (since we might switch to another
        thread).

Sun Dec  7 01:43:56 1997  Gary Houston  <ghouston@actrix.gen.nz>

        * simpos.c (scm_system): always define: use sysmissing if not
        available.  Check for HAVE_SYSTEM instead of _Windows (does
        Windows lack system or does it have an unusable one?).
        Check for error conditions -1 and 127.  Use SCM_DEFER_INTS.
        Let the argument be optional: if not supplied, call system(NULL).

        * ports.c (scm_close_port): relax the type check from OPPORTP to
        PORTP; closing a closed port is allowed.

1997-12-04  Tim Pierce  <twp@ppp39.Nantucket.net>

        * fports.c (scm_fgets): Return if the last char in a chunk is
        newline.  When fgets returns a string whose length is `size-1', it
        is ambiguous whether a whole line was retrieved, so we must check
        explicitly whether a line terminator is present.

1997-12-04  Mikael Djurfeldt  <mdj@mdj.nada.kth.se>

        * print.h (SCM_COERCE_OUTPORT): Check that the object is a pair
        before taking the CDR. (Thanks to Harald Meland.)

        * filesys.c (scm_stat): Slightly optimized.

Wed Dec  3 12:23:06 1997  Jim Blandy  <jimb@totoro.red-bean.com>

        * ports.c (scm_close_port): Make sure the port is open before
        trying to close it.

        * guile-snarf.in: Pass args through to gcc in a way that preserves
        whitespace boundaries.  (Thanks to Greg Badros.)

1997-12-02  Tim Pierce  <twp@skepsis.com>

        * stacks.c (scm_frame_procedure): Reverse the logic in the return
        statement.  (Thanks to Doug Evans for pointing this out.)

1997-12-01  Tim Pierce  <twp@skepsis.com>

        * scmconfig.h.in: Regenerated for USCORE change in ../acconfig.h.

Sun Nov 30 11:29:18 1997  Mikael Djurfeldt  <mdj@kenneth>

        * coop-defs.h (struct coop_t): Renamed errno --> _errno to prevent
        errno macro expansion of this field name.  (errno is a C
        preprocessor macro on some systems.)

1997-11-29  Tim Pierce  <twp@skepsis.com>

        * iselect.c: Doc fix.

Sat Nov 29 01:16:53 1997  Mikael Djurfeldt  <mdj@kenneth>

        * init.c (scm_start_stack): Removed initialization of
        scm_the_last_stack_var.

        * backtrace.h: Declare scm_the_last_stack_var.

        * backtrace.c: Define scm_the_last_stack_var.

        * root.c (mark_root): Don't mark the_last_stack_var.

        * root.h (scm_root_state): Removed the_last_stack_var.

        * throw.c: Added #include "fluids.h"
        (ss_handler): `the-last-stack' is now a fluid.

        * (backtrace.h, backtrace.c, throw.c): Renamed the_last_stack_var
        --> the_last_stack_fluid.
        
        * backtrace.c: Added #include "fluids.h"
        (scm_init_backtrace): Initialize `the-last-stack' to a fluid.
        (scm_backtrace): `the-last-stack' is now a fluid.

        * init.c (scm_boot_guile_1): Moved call to scm_init_backtrace
        after scm_init_fluids.

1997-11-28  Tim Pierce  <twp@skepsis.com>

        * iselect.c: #ifdef USE_THREADS around thread-related includes.

        * dynl-dl.c (sysdep_dynl_func): Check both USCORE and
        DLSYM_ADDS_USCORE to decide whether to add an underscore.

1997-11-28  Mikael Djurfeldt  <mdj@mdj.nada.kth.se>

        * iselect.c (coop_next_runnable_thread,
        coop_wait_for_runnable_thread): Disable interrupts so that no
        async is executed before a potential error_revive.
        (scm_internal_select): Disable interrupts during the parts of the
        code which manipulate the sleep queue and the file descriptors.

1997-11-27  Mikael Djurfeldt  <mdj@mdj.nada.kth.se>

        * Makefile.am: Added iselect.c and iselect.h.

        * coop.c (coop_qinit): Initialize fields used by
        scm_internal_select.
        (coop_qget, coop_qget, coop_tmp_queue): Made global.
        (coop_next_runnable_thread): If GUILE_ISELECT enabled, use
        replacement in iselect.c.
        (coop_mutex_lock, coop_condition_variable_wait, coop_abort,
        coop_join): If GUILE_ISELECT enabled, use
        coop_wait_for_runnable_thread instead of
        coop_next_runnable_thread.
        (usleep, sleep): New replacements for system functions if
        GUILE_ISELECT is enabled.

        * coop-threads.h: Declare coop_wait_for_runnable_thread.

        * coop-defs.h (coop_t): Added fields used by scm_internal_select.

        * filesys.c: Added #include "iselect.h".  Moved FD-macros to
        iselect.h.  Implement Scheme level `select' using
        scm_internal_select.  (See NEWS.)

        * genio.c (scm_getc): Block with scm_internal_select.  (See NEWS.)

        * init.c: Call scm_init_iselect.

        * iselect.h, iselect.c: New files.  Implements
        scm_internal_select.  (See NEWS.)

1997-11-27  Tim Pierce  <twp@skepsis.com>

        Fix a memory leak in scm_read_line and a type cast bug in the ptob.
        * fports.c (scm_fgets): Use malloc/free rather than scm_must_malloc
        and scm_must_free, since ultimately the string returned will be copied
        by scm_makfrom0str anyway.  Also, read any characters that may have
        been pushed onto the port with scm_ungetc.
        * ports.c (scm_generic_fgets): Same as for scm_fgets.
        * ioext.c (scm_read_line): Free string after Guilifying it.
        * ports.h (scm_ptobfuns): fgets method returns a char *, not a char.

1997-11-26  Anthony Green  <green@hoser.cygnus.com>

        * gh_data.c (gh_set_substr): Strings can be longer than 256 bytes.

        * gh.h: Safely wrap prototypes for c++ usage.

1997-11-25  Mark Galassi  <rosalia@cygnus.com>

        * gh_test_repl.c (main_prog): changed invocation of gh_repl() to
        gh_repl (argc, argv).

1997-11-24  Mark Galassi  <rosalia@nis.lanl.gov>

        * gh_init.c (gh_repl): modified gh_repl() to accept argc and argv
        and to invoke scm_shell().
        (gh_launch_pad): took out the loading of boot-9.scm from here,
        since it is probably best to let the user control that.  In fact,
        gh_repl() now invokes scm_shell() which does that.

1997-11-23  Mark Galassi  <rosalia@cygnus.com>

        * gh_test_repl.c (main_prog): added argc and argv to the gh_repl()
        invocation.

1997-11-22  Tim Pierce  <twp@twp.tezcat.com>

        * dynl-dl.c (sysdep_dynl_func): Fix memory leak created by
        yesterday's underscore patch.  (Thanks to Marius Vollmer for
        spotting this.)

1997-11-21  Tim Pierce  <twp@twp.tezcat.com>

        * dynl-dl.c (sysdep_dynl_func): Prepend symb with underscore if
        DLSYM_ADDS_USCORE is not defined.

1997-11-17  Mark Galassi  <rosalia@nis.lanl.gov>

        * gh_data.c (gh_uniform_vector_length): 
        (gh_uniform_vector_ref): started implementing the uniform types in
        the gh_ interface.

1997-11-06  Mikael Djurfeldt  <mdj@nada.kth.se>

        * regex-posix.c (scm_free_regex_t): Return size of regex_t instead
        of 0; size_t --> scm_size_t.  Thanks to Bernard Urban.

1997-10-26  Mikael Djurfeldt  <mdj@nada.kth.se>

        * scmconfig.h.in: Updated (HAVE_LIBTERMCAP was added when
        configure.in was changed).

Sun Oct 26 02:20:11 1997  Jim Blandy  <jimb@totoro.red-bean.com>

        * Makefile.am (modinclude_HEADERS): Include readline.h here.
        * Makefile.in: Regenerated.

1997-10-25  Marius Vollmer  <mvo@zagadka.ping.de>

        * print.h (SCM_COERCE_OPORT): Renamed to SCM_COERCE_OUTPORT.  An
        OPORT is an `open' port, not an output port.

        * filesys.c (scm_close, set_element, get_element, scm_chown,
        scm_chmod, scm_stat, scm_truncate_file, scm_fcntl, scm_fsync): Use
        SCM_COERCE_OUTPORT to cope with the printstate/port magic.
        * ports.c (scm_port_revealed, scm_set_port_revealed_x,
        scm_close_port, scm_port_line, scm_set_port_line_x,
        scm_port_column, scm_set_port_column_x, scm_port_filename,
        scm_set_port_filename_x, scm_port_mode,
        scm_close_all_ports_except, scm_set_current_output_port,
        scm_set_current_error_port): Likewise
        * ioext.c (scm_redirect_port, scm_dup_to_fdes, scm_freopen,
        scm_ftell, scm_fileno, scm_isatty_p, scm_primitive_move_to_fdes):
        Likewise
        * posix.c (scm_ttyname, scm_tcgetpgrp, scm_tcsetpgrp): Likewise
        * backtrace.c (display_backtrace_body): Likewise
        * fports (scm_setvbuf): Likewise
        * socket.c (scm_getsockopt, scm_setsockopt, scm_shutdown,
        scm_connect, scm_bind, scm_listen, scm_accept, scm_getsockname,
        scm_getpeername, scm_send, scm_sendto): Likewise
        * unif.c (scm_uniform_array_write): Likewise

Sat Oct 25 02:52:58 1997  Jim Blandy  <jimb@totoro.red-bean.com>

        Minor problems with substring-related tag changes.
        * symbols.h (SCM_SUBSTRP): Don't mask off the S bit; that's
        exactly what we want to leave in to detect substrings.
        (SCM_ROSTRINGP, ROUCHARS): Formatting tweaks.
        * tags.h: Fix diagrams and comments describing the S tag bit;
        remove vestigial remarks about the D tag bit.
        (SCM_TYP7, SCM_TYP7S): Rephrased for readability.
        * strings.c: Formatting tweaks.

        * load.c (scm_init_load_path): Check GUILE_LOAD_PATH environment
        variable first; then SCHEME_LOAD_PATH, with a warning message.
        (scm_parse_path): New function.
        * script.c: Doc fixes.

Thu Oct 23 01:02:03 1997  Jim Blandy  <jimb@totoro.red-bean.com>

        Readline support, from Daniel Risacher.
        * readline.c, readline.h: New files.
        * init.c: #include "readline.h".
        (scm_boot_guile_1): Call scm_init_readline, if we have it.
        * Makefile.am (libguile_la_SOURCES): Include readline.c.
        * Makefile.in: Regenerated.
        * scmconfig.h.in: Regenerated, after change to ../configure.

1997-10-20  Mark Galassi  <rosalia@nis.lanl.gov>

        * gh.h: gh_vector_set -> gh_vector_set_x

1997-10-20  Mark Galassi  <rosalia@nis.lanl.gov>

        * gh_data.c (gh_vector_set_x): changed name to make it consistent
        with the ! -> _x mapping when going from Scheme to C.

1997-10-19  Mark Galassi  <rosalia@cygnus.com>

        * gh.h (gh_reverse): 
        (gh_list_tail): 
        (gh_list_ref): 
        (gh_memq): 
        (gh_memv): 
        (gh_member): 
        (gh_assq): 
        (gh_assv): 
        (gh_assoc): added these gh_ functions implemented as macros.

        * gh_predicates.c (gh_null_p): 
        (gh_string_equal_p): added these two missing predicates.

        * gh_list.c (gh_append): 
        (gh_append2): 
        (gh_append3): 
        (gh_append4): 
        (gh_set_car_x): 
        (gh_set_cdr_x): added these routines as I go through and try to
        complete the picture R4RS functions that should be mirrored in the
        gh_ interface.

Sat Oct 18 01:52:51 1997  Mikael Djurfeldt  <mdj@mdj.nada.kth.se>

        * tags.h (scm_tc7_substring): Changed the comment and code to
        conform with the changes below.  Folks!  We have suddenly two new
        free tc7 codes!!!  Jummy, jummy!

Tue Oct 14 22:03:06 1997  Tom Tromey  <tromey@cygnus.com>

        * Makefile.in: Rebuilt.
        * Makefile.am (libguile_la_SOURCES): Removed extchrs.c,
        mbstrings.c.
        (modinclude_HEADERS): Removed extchrs.h, mbstrings.h.
        * unif.c (scm_vector_set_length_x): Don't handle multibyte
        strings.
        * tag.c (scm_utag_mb_string, scm_utag_mb_substring): Removed.
        (scm_tag): Don't handle multibyte strings.
        * read.c: Don't include mbstrings.h.
        (scm_lreadr): Don't handle multibyte ports.
        * kw.c: Don't include mbstrings.h.
        * init.c: Don't include mbstrings.h.
        (scm_boot_guile_1): Don't init mbstrings module.
        * hash.c (scm_hasher): Don't handle mbstrings.
        * gscm.c (gscm_run_scm): Don't init mbstrings module.
        * gc.c (scm_gc_mark): Don't handle mbstrings.
        (scm_gc_sweep): Likewise.
        * eval.c (SCM_CEVAL): Don't handle mbstrings.
        * eq.c (scm_equal_p): Use SCM_TYP7S, not SCM_TYP7SD.
        * tags.h (SCM_TYP7SD): Removed.
        (SCM_TYP7D): Removed.
        (scm_tc7_mb_string): Removed.
        (scm_tc7_mb_substring): Removed.
        * print.c (scm_iprin1): Handle char printing directly.  Don't
        handle mbstrings.
        Don't include "mbstrings.h".
        * symbols.c (scm_intern_obarray_soft, scm_string_to_symbol,
        scm_string_to_obarray_symbol, msymbolize): Don't set symbol's
        multi-byte flag.
        Don't include "mbstrings.h".
        * symbols.h (SCM_SYMBOL_MULTI_BYTE_STRINGP): Removed.
        (SCM_SYMBOL_SLOTS): Define as 4.
        (SCM_ROSTRINGP): Use SCM_TYP7S, not SCM_TYP7SD.
        * arbiters.c, backtrace.c, debug.c, dynl.c, eval.c, fluids.c,
        gc.c, gsubr.c, ioext.c, kw.c, mallocs.c, numbers.c, ports.c,
        print.c, read.c, regex-posix.c, root.c, srcprop.c, stackchk.c,
        struct.c, threads.c, throw.c, unif.c, variable.c: Use new
        ("gen"-less) I/O function names.
        * ports.c (scm_add_to_port_table): Don't set port's
        representation.
        * ports.h (scm_port_representation_type): Removed.
        (scm_string_representation_type): Removed.
        (struct scm_port_table ): Removed representation field.
        (SCM_PORT_REPRESENTATION): Removed.
        (SCM_SET_PORT_REPRESENTATION): Removed.
        * genio.h: Use new function names.
        * genio.c: Don't include "extchrs.h".
        (scm_gen_putc, scm_gen_puts, scm_gen_write, scm_get_getc):
        Removed.
        (scm_putc, scm_puts, scm_lfwrite): No longer static.
        (scm_getc): No longer static; handle line and column changes.
        (scm_ungetc): Renamed from scm_gen_ungetc.
        (scm_do_read_line): Renamed from scm_gen_read_line.
        * libguile.h: Don't include "extchrs.h" or "mbstrings.h"
        * extchrs.h, extchrs.c, mbstrings.h, mbstrings.c: Removed.

1997-10-12  Mark Galassi  <rosalia@cygnus.com>

        * gh_test_repl.c (c_vector_test): same as gh_test_c.c

        * gh_test_c.c (c_vector_test): some improvements on the vector
        routines test.

        * gh.h (gh_vector): this used to exist but do the wrong thing.
        Now it (almost) does the right thing, though it takes a list
        instead of the individual arguments.  I need to see how it could
        be done right.
        (gh_list_to_vector): added this function as a macro.  Corresponds
        to Scheme's (list->vector ...).
        (gh_vector_to_list): added this function as a macro.  Corresponds
        to Scheme's (vector->list ...).

        * gh_data.c (gh_vector_ref): renamed from gh_vref to
        gh_vector_ref, so that it resembles the Scheme routines more.
        (gh_vector_set): renamed from gh_vset to gh_vector_set, so that it
        resembles the Scheme routines more.
        (gh_make_vector): this used to be (stupidly) called gh_vector().
        This is the right name, since it does the same thing as the Scheme
        (make-vector ...) procedure.

Sun Oct 12 14:41:39 1997  Mikael Djurfeldt  <mdj@kenneth>

        * ports.h: #include "libguile/print.h"

        * eval.c (SCM_CEVAL, scm_apply): Completed GOOPS support code;
        Some indentation fixes.

        * objects.h (SCM_METACLASS_STANDARD_LAYOUT): Printer field is no
        longer a user field; New field: class_flags.

        * objets.c, objects.h: New metaclass: scm_metaclass_operator.

Tue Oct  7 09:37:24 1997  Mark Galassi  <rosalia@cygnus.com>

        * gh_data.c (gh_bool2scm): new function which replaces
        gh_int2scmb(), which is now tagged as obsolete.

1997-10-03  Mikael Djurfeldt  <mdj@nada.kth.se>

        * print.h (SCM_PRINT_STATE_P): Removed SCM_NIMP test.  (NIMP
        macros should by convention not test for NIMPness.)
        (SCM_COERCE_OPORT): Adjust indentation.

        * print.c (scm_valid_oport_value_p): Adjusted indentation; Added
        SCM_NIMP test before SCM_PRINT_STATE_P.

        * struct.c, struct.h, gc.c: Renamed:
        scm_struct_i_layout        --> scm_vtable_index_layout
        scm_struct_i_vcell         --> scm_vtable_index_vcell
        scm_struct_i_vtable        --> scm_vtable_index_vtable
        scm_struct_i_printer       --> scm_vtable_index_printer
        scm_struct_i_vtable_offset --> scm_vtable_offset_user
        
        * struct.c (scm_print_struct): Use new printer slot; Default
        printing: Also output hex code of vtable so that type identity
        will be indicated as well.
        (scm_init_struct): Updated required_vtable_fields to "pruosrpw";
        Removed struct_printer_var; Removed struct-vtable-offset;
        (vtable-index-layout, vtable-index-vtable, vtable-index-printer,
        vtable-offset-user): New constants.

        * struct.h (scm_struct_i_vtable_offset): Bumped from 3 to 4.
        (scm_struct_i_printer, SCM_STRUCT_PRINTER): New slot in vtables.
        If this slot contains a procedure, use that to print structures of
        the type represented by this vtable.

        * print.c (scm_iprin1): Don't print arguments of macro
        transformers.  (They are always: exp env.); Bugfix: Unmemoize
        transformer source with correct environment.

1997-10-02  Marius Vollmer  <mvo@zagadka.ping.de>

        Streamlining of call-with-dynamic-root:
        
        * root.c (cwdr_inner_body, cwdr_body): Remove "inner" from name,
        there is now only one catch.
        (cwdr_outer_body): Removed.
        (cwdr_handler): New function.
        (scm_internal_cwdr): New function to perform the function of cwdr
        but take args that are more useful to C code.  Also, the handler
        is now invoked *outside* of the new dynamic root, like the docs
        say.  We no longer have to catch absolutely all errors, the caller
        is responsible for using a handler that does not throw, if he
        wants that.
        (cwdr): Reimplemented in terms of scm_internal_cwdr.
        * root.h (scm_internal_cwdr): New prototype.

        Even more but risky streamlining:
        
        * root.c (USE_STACKJMPBUF): New define to activate a stack-based
        allocation of the jumpbuf of a root continuation.  The changes
        below are controlled by it.  They are now deactivated.
        (scm_internal_cwdr): Allocate the scm_contregs on the stack.  Set
        the JMPBUF of the scm_rootcont to NULL before returning.

        * gc.c (scm_gc_sweep): Free the SCM_VELTS of a scm_tc7_contin only
        when they are non-NULL.
        (scm_gc_mark): Likewise, mark only when non-NULL.

        Make dynamic linking work on Dec Unix. (Thanks to Clark McGrew)
        * dynl.c: Include "dynl-dl.c" also when HAVE_DLOPEN is defined.

        * gc.c (scm_done_malloc): New function.
        gc.h (scm_done_malloc): New prototype.
        
        * print.h (SCM_PRINT_STATE_P, SCM_COERCE_OPORT): New macros.
        (struct scm_print_state) [revealed]: New field.
        (scm_print_state_vtable): Make visible to the outside world for
        type checking purposes.
        (scm_valid_oport_value_p): New prototype.
        
        * print.c (scm_valid_oport_value_p): New function to check whether
        a certain value is acceptable as a port argument.
        (scm_print_state_vtable): New variable.
        (scm_free_print_state): Set `revealed' field to false.
        (scm_iprin1): Call user supplied closure printer with
        scm_printer_apply.  Print in the traditional way when there isn't
        one or when it returns #f.
        (scm_prin1, scm_display, scm_write, scm_newline, scm_write_char):
        Accept a port/print-state pair in addition to just a port.
        (scm_prin1): Don't return the print_state to the pool when it has
        been `revealed'.
        (scm_printer_apply): Set `revealed' field of print_state to true.
        (scm_init_print): Set scm_print_state_vtable.
        (print_state_fluid, print_state_fluid_num): Removed.
        
        * throw.h (scm_handle_by_proc_catching_all): New prototype
        throw.c (scm_handle_by_proc_catching_all): New function
        
Mon Sep 29 23:54:09 1997  Jim Blandy  <jimb@totoro.red-bean.com>

        * Makefile.in: Regenerated with automake 1.2c.

Sun Sep 28 21:35:42 1997  Radey Shouman  <shouman@zianet.com>

        * ramap.c (scm_array_index_map_x): Fixed for zero-rank arguments,
        was looping endlessly.

Sun Sep 28 00:04:29 1997  Jim Blandy  <jimb@totoro.red-bean.com>

        * strports.c (scm_eval_string): Don't close the port.

        * stime.c (bdtime2c): Use SCM_LENGTH, not scm_vector_length; the
        former returns a nice normal integer.  (Thanks to Daniel
        Risacher.)

Sat Sep 27 20:19:34 1997  Jim Blandy  <jimb@totoro.red-bean.com>

        * Makefile.am (libpath.h): Include the value of the THREAD_LIBS
        makefile variable as a build parameter called LIBS.  The
        build-guile program will use this, for the time being.
        * Makefile.in: Regenerated.

        Thanks to Shiro Kawai:
        * gc.c (scm_gc_mark): Pass NULL to scm_wta as the subroutine name.
        * ports.h (scm_ptobfuns): The fgets method returns a char *, not
        an SCM.

        * Makefile.in: Regenerated with automake 1.2a.

        * script.c (scm_compile_shell_switches): If we hit the -c or --
        arguments, don't set the car of (command-line) to scm_usage_name,
        the prettified name of the guile executable; give it the full
        path, the way shells usually handle $0. 

Wed Sep 24 22:09:52 1997  Mikael Djurfeldt  <mdj@mdj.nada.kth.se>

        * ramap.c (scm_array_map): Renamed to scm_array_map_x.  Removed
        Scheme-level name `array-map' and renamed `serial-array-map' to
        `serial-array-map!'.

        * backtrace.c: Introduced exception handlers which now enclose
        `display-error' and `display-backtrace' so that error reporting
        won't get into infinite loops if an error occurs during displaying
        of the error.  This can very easily happen with user supplied
        print call-back routines.

Tue Sep 23 12:43:17 1997  Mikael Djurfeldt  <mdj@mdj.nada.kth.se>

        * ramap.c: Added alias `array-map!' for `array-map'.  (Probably,
        the names `serial-array-map' and `array-map' should be removed.)

Mon Sep 22 01:21:54 1997  Mikael Djurfeldt  <mdj@kenneth>

        * init.c (scm_boot_guile_1): Added scm_init_objects ().
        Added #include "objects.h"

        * eval.c (scm_makprom): Added SCM_DEFER_INTS and SCM_ALLOW_INTS.
        Add #include "feature.h".

        * Makefile.am (libguile_la_SOURCES): Added objects.c.
        (modinclude_HEADERS): Added objects.h.

        * ports.h (SCM_EOF_OBJECT_P): New macro predicate.
        This test is needed at many places in the code and should be
        abstracted.  (Motivated by the need of this test in libguiletk.)

        * ports.c (scm_eof_object_p), vports.c (sfgetc), strports.c
        (scm_eval_string), load.c (scm_primitive_load,
        scm_read_and_eval_x), gh_eval.c (gh_eval_str):
        Use SCM_EOF_OBJECT_P.

        * eval.c (scm_init_eval): Add feature `delay'.

Tue Sep 16 02:12:02 1997  Mikael Djurfeldt  <mdj@mdj.nada.kth.se>

        * scmhob.h: Removed.

Mon Sep 15 20:42:03 1997  Mikael Djurfeldt  <mdj@mdj.nada.kth.se>

        * list.h (SCM_LISTn): New macros.  Make list creation in C code
        prettier.  The idea comes from STk.

        * sequences.h, sequences.c, append.h, append.c: Removed.  These
        files implemented non-R4RS operations which would encourage
        non-portable programming style and less easy-to-read code.

        * Makefile.am (sequences.h, sequences.c, append.h, append.c):
        Removed.
        
        * libguile.h, eval.c, init.c, stime.c, unif.c: Removed #include
        sequences.h, #include append.h.

        * init.c (scm_boot_guile_1): Removed calls to scm_init_append and
        scm_init_sequences.

        * gh.h, gh_list.c: Renamed gh_list_length --> gh_length.

        * list.h, list.c: Renamed scm_list_length --> scm_length, scm

        * stime.c (bdtime2c): Changed scm_obj_length --> scm_vector_length.

Sat Sep 13 00:21:41 1997  Mikael Djurfeldt  <mdj@mdj.nada.kth.se>

        * eval.c: Added #include "objects.h"

        * tags.h (scm_tc16_object, scm_tc16_entity): Smobtags for objects
        and entities.

        * smob.c (scm_smob_prehistory): Create two objectsmobs with
        adjacent smob numbers.

Thu Sep 11 00:59:17 1997  Mikael Djurfeldt  <mdj@mdj.nada.kth.se>

        * procprop.h: Added declaration of scm_i_inner_name.

        * gsubr.c: New global symbol scm_i_inner_name.

        * debug.c (scm_procedure_name): Try procedure property
        `inner-name' if `name' fails.

        * print.c (scm_iprin1): Use scm_macro_name.

        * eval.c (scm_m_define): Give names to macros as well; Only the
        first top-level definition gives a procedure/macro a name.
        Otherwise confusing names can turn up in backtraces.
        (SCM_CEVAL): SCM_IM_DEFINE: Set `inner-name' property instead of
        `name'; Give names to macros as well.

        * procs.c (scm_closure_p), print.c (scm_iprin1), eval.c
        (scm_macro_transformer): Use SCM_CLOSUREP instead of
        scm_closure_p.

Wed Sep 10 20:52:18 1997  Mikael Djurfeldt  <mdj@mdj.nada.kth.se>

*       * eval.c (macro?, macro-type, macro-name, macro-transfomer): New
        procedures;
        (prinmacro): Removed.  The code has been moved/merged into print.c
        in order to decrease code redundancy.  We want macros to print in
        a way equivalent to procedures, and it would be silly to duplicate
        the required code.  (We don't want to maintain two places.)
        (macrosmob): Print field is now a NULL pointer.
        
        * eval.h (scm_macro_p, scm_macro_type, scm_macro_name,
        scm_macro_transformer): New prototypes.
        (scm_tc16_macro): Declared.

*       * print.c (scm_iprin1): Added code for printing of macros.  Macros
        are now printed in a way equivalent to procedures.

Sat Sep  6 12:20:42 1997  Mikael Djurfeldt  <mdj@kenneth>

        * procs.h (scm_closure_p): Added declaration.

Fri Sep  5 13:36:14 1997  Mikael Djurfeldt  <mdj@mdj.nada.kth.se>

        * gc.c (scm_gc_mark): Fixed "rogue pointer in heap" message:
        Shouldn't pass "heap" as the subr name.

Tue Sep  2 18:14:30 1997  Jim Blandy  <jimb@totoro.red-bean.com>

        * gh_predicates.c (gh_boolean_p, gh_symbol_p, gh_char_p,
        gh_vector_p, gh_pair_p, gh_number_p, gh_string_p, gh_procedure_p,
        gh_list_p, gh_inexact_p, gh_exact_p, gh_eq_p, gh_eqv_p,
        gh_equal_p): Use SCM_NFALSEP, instead of testing against
        SCM_BOOL_T.  Any non-false value is true.

Tue Sep  2 00:27:07 1997  Mikael Djurfeldt  <mdj@mdj.nada.kth.se>

        * symbols.h (scm_builtin_bindings, scm_builtin_weak_bindings,
        scm_gensym): Added prototypes.

        * symbols.c (scm_gensym): New function.  This will speed up
        certain types of applications (such as macro systems) which
        generate lots of symbols.

Mon Sep  1 22:30:33 1997  Mikael Djurfeldt  <mdj@mdj.nada.kth.se>

        * numbers.c (logand, logior, logxor): Handle 0 or 1 arguments.

Sat Aug 30 18:56:19 1997  Gary Houston  <ghouston@actrix.gen.nz>

        * unif.c (scm_shap2ra): tighten the checking of the array dimension
        specifier, since (2) or (2 . 3) would cause SEGV.
        (scm_transpose_array): more argument checking fixes.

Thu Aug 28 23:48:53 1997  Jim Blandy  <jimb@totoro.red-bean.com>

        * Makefile.in: Regenerated.

Wed Aug 27 17:44:44 1997  Jim Blandy  <jimb@totoro.red-bean.com>

        * Makefile.in: Regenerated, so it uses "tar", not "gtar".

Mon Aug 25 13:47:25 1997  Mikael Djurfeldt  <mdj@mdj.nada.kth.se>

        * error.c, error.h (scm_error_callback): Removed (see NEWS).

Sun Aug 24 01:25:35 1997  Mikael Djurfeldt  <mdj@kenneth>

        * regex-posix.c: If <regex.h> can't be found, try <rxposix.h> or
        <rx/rxposix.h>.  (This is in order to accomodate for the GNU Rx
        library.)

        * ramap.c (scm_ra_matchp, scm_array_fill_int, racp, ramap_1,
        ramap_2o, scm_array_index_map_x, raeql_1, scm_array_equal_p),
        unif.c (scm_vector_set_length_x, scm_uniform_vector_length,
        scm_array_p, scm_array_rank, scm_array_dimensions,
        scm_enclose_array, scm_array_in_bounds_p, scm_uniform_vector_ref,
        scm_cvref, scm_array_set_x, scm_array_contents, scm_array_to_list,
        scm_array_prototype): Added case scm_tc7_wvect.

Sat Aug 23 18:45:44 1997  Gary Houston  <ghouston@actrix.gen.nz>

        * errno.h: prototype for scm_strerror.
        * error.c (scm_strerror): new procedure.

Mon Aug 18 14:58:22 1997  Mikael Djurfeldt  <mdj@mdj.nada.kth.se>

        * list.c (scm_list_append_x): Allow non-pair as last argument.
        This is consistent with the R4RS append and is probably the
        correct behaviour as specified by R2RS.  (Thanks to Radey Shouman)

Sat Aug 16 18:42:15 1997  Gary Houston  <ghouston@actrix.gen.nz>

        * stime.h: prototype for scm_times.
        * stime.c (scm_times): new procedure.
        * ioext.c (scm_fseek): if the first argument is a file descriptor
        call lseek.
        (scm_ftell): if the first argument is a file descriptor call lseek
        (sic).
        * filesys.h: prototypes for scm_open_fdes, scm_fsync.
        * filesys.c (scm_chmod): if the first argument is a file descriptor,
        call fchmod.
        (scm_chown): if the first argument is a port or file descriptor,
        call fchown.
        (scm_truncate_file): new procedure.
        Add DEFER/ALLOW INTS to a few other procedures.
        (scm_fsync): new procedure.
        (scm_open_fdes): new procedure.
        (scm_open): use scm_open_fdes.  If mode isn't specified, 666 will
        now be used.
        (scm_fcntl): the first argument can now be a file descriptor.  The
        third argument is now optional. 

        * posix.c (scm_execl, scm_execlp): make the filename argument
        compulsory, since omitting it causes SEGV.
        (scm_sync): return unspecified instead of #f.
        (scm_execle): new procedure.
        (environ_list_to_c): new procedure.
        (scm_environ): use environ_list_to_c.  disable interrupts.
        (scm_convert_exec_args): take pos and subr arguments and
        improve error checking.

1997-08-14  Mikael Djurfeldt  <mdj@mdj.nada.kth.se>

        * stacks.c (scm_make_stack), coop-threads.c, mit-pthreads.c
        (scm_call_with_new_thread): Bugfix: SCM_WNA should go as third
        argument to SCM_ASSERT.  Furthermore, the name of the function
        should be passed as first argument when signalling
        SCM_WNA. (Thanks to Thomas Morgan)

        * gsubr.c (scm_gsubr_apply): From Radey Shouman
        <shouman@zianet.com>: "The switch in scm_gsubr_apply that
        dispatches on the number of actual args has a default case
        reporting an internal error.  This is a vestige from a version
        that mallocated a SCM vector to hold the arguments.  In the
        current version this check is too late: if it ever happens we will
        have already overstepped the bounds of the array.

        Also, the patch [...] adds a check for too many actual arguments."

        mdj: Removed check for "internal programming error".

Wed Aug 13 15:38:44 1997  Mikael Djurfeldt  <mdj@mdj.nada.kth.se>

        * gh_io.c (gh_write): New function.

        * gh_eval.c (catch_with_saved_stack): Removed.  Replaced by:
        throw.c (scm_internal_stack_catch): New sibling to the other catch
        functions.  Code moved from gh_eval.c.
        throw.h: Added header.
        gh_eval.c (gh_eval_str_with_stack_saving_handler): Renamed call to
        scm_internal_stack_catch.

Tue Jul 29 01:03:08 1997  Gary Houston  <ghouston@actrix.gen.nz>

        * ioext.h: fix up prototypes.
        * ioext.c (scm_dup_to_fdes): renamed from scm_primitive_dup2.
        Scheme name is now dup->fdes.
        (scm_dup_to_fdes): make the second argument optional and
        fold in the functionality of scm_primitive_dup.
        (scm_primitive_dup): deleted.

Mon Jul 28 05:24:42 1997  Gary Houston  <ghouston@actrix.gen.nz>

        * fports.h (SCM_P): prototypes for scm_setvbuf, scm_setfileno.
        * fports.c (scm_setbuf0): don't disable the setbuf if MSDOS or
        ultrix are defined.  Use setvbuf instead of setbuf.
        (scm_setvbuf): new procedure.
        (scm_init_fports): intern _IOFBF, _IOLBF, _IONBF.
        (scm_setfileno): moved from ioext.c.
        (scm_fgets): cast SCM_STREAM to (FILE *), remove unused lp variable.
        (top of file): Delete 25 lines of probably obsolete CPP hair for MSDOS.

Sun Jul 27 10:54:01 1997  Marius Vollmer  <mvo@zagadka.ping.de>

        * fluids.c (scm_fluid_p): New function.
        * fluids.h (scm_fluid_p): New prototype.

Sat Jul 26 21:33:37 1997  Marius Vollmer  <mvo@zagadka.ping.de>

        * print.c (scm_iprin1): Enter printed structures into the print
        state as nested data while they are printed.
        (print_state_fluid, print_state_fluid_num): New variables.
        (scm_init_print): Initialize them.
        (scm_iprin): If print_state_fluid carries a print_state, use that
        instead of creating a new one.
        (scm_printer_apply, apply_stub, struct apply_data): New
        definitions to help with calling printer functions written in
        Scheme.
        * print.h (scm_printer_apply): New prototype.

        * struct.c (scm_print_struct): Use scm_printer_apply to call the
        user defined struct printer.
        
        * dynwind.c (scm_dowinds): Handle fluids on the wind list.
        * fluids.h (scm_internal_with_fluids, scm_with_fluids,
        scm_swap_fluids, scm_swap_fluids_reverse): New prototypes.
        * fluids.c (scm_internal_with_fluids, scm_with_fluids,
        scm_swap_fluids, scm_swap_fluids_reverse): New functions.

Fri Jul 25 12:05:46 1997  Marius Vollmer  <mvo@zagadka.ping.de>

        * fluids.c (scm_fluid_ref, scm_fluid_set_x): Fixed use of
        SCM_ASSERT: arg comes before pos.

Fri Jul 25 17:00:38 1997  Mikael Djurfeldt  <mdj@mdj.nada.kth.se>

        * eval.c (scm_apply): Handle the case when a tc7_sybr_2 is applied
        to a list of length zero correctly.

Wed Jul 23 16:17:46 1997  Tim Pierce  <twpierce@bio-5.bsd.uchicago.edu>

        Supply an `fgets' method for port objects to do fast line i/o.
        * ioext.c (scm_read_line): New function.
        * genio.c (scm_gen_read_line): New function.
        * fports.c (scm_fgets): New function.
        (scm_fptob, scm_pipob): Add scm_fgets method.
        * ports.c (fgets_void_port, scm_generic_fgets): New functions.
        (void_port_ptob): Add void fgets method.
        (scm_newptob): Initialize fgets method from ptob struct.
        * ports.h (scm_ptobfuns): Add fgets method.
        * vports.c (scm_sfptob): Supply generic fgets method.
        * strports.c (scm_stptob): Supply generic fgets method.

Mon Jul 21 04:03:42 1997  Gary Houston  <ghouston@actrix.gen.nz>

        * ioext.h: removed scm_duplicate_port prototype.

        * ioext.c (scm_primitive_dup2): return the new file descriptor
        instead of SCM_UNSPECIFIED, since similarity to scm_primitive_dup
        is convenient.
        (scm_fdopen): bug fix: don't try to make port unbuffered until its
        stream has been set.
        (scm_duplicate_port): deleted, there's now an implementation in
        boot-9.scm.
        (scm_primitive_dup2): do nothing if newfd == oldfd.

Sun Jul 20 03:55:49 1997  Gary Houston  <ghouston@actrix.gen.nz>

        * filesys.c (scm_close): oops, don't call SCM_INUM twice on the
        argument.

        * ioext.h: new prototypes.
        * ioext.c (scm_primitive_dup, scm_primitive_dup2): new procedures.

        * fluids.c (next_fluid_num): don't do
        SCM_THREAD_CRITICAL_SECTION_START/END unless USE_THREADS is defined.

        * ports.h: prototypes too.
        * ports.c (scm_mode_bits, scm_port_mode): moved from fports.c.

        * fports.h: prototype too.
        * fports.c (scm_evict_ports): moved from ioext.c.

Sat Jul 19 04:56:52 1997  Gary Houston  <ghouston@actrix.gen.nz>

        * ports.c (scm_close_port): return a boolean instead of unspecified.
        throw an error if an error other than EBADF occurs.

        * filesys.h: scm_close prototype.
        * filesys.c (scm_close): new procedure, can close file descriptors
        and ports (scsh compatible).

        * ports.c (scm_flush_all_ports): SCM_PROC incorrectly allowed an
        optional argument.

Fri Jul 18 11:19:53 1997  Marius Vollmer  <mvo@zagadka.ping.de>

        * fluids.c, fluid.h: New files.
        * Makefile.am (libguile_la_SOURCES): Added "fluids.c".
        (modinclude_HEADERS): Added "fluids.h"
        
        * init.c: Include "fluids.h".  (scm_boot_guile_1): Added call to
        scm_init_fluids to initialize the fluid machine.
        (scm_start_stack): Initialize the fluids of the first root with
        scm_make_initial_fluids.

        * root.h: Added "fluids" member to scm_root_state.
        * root.c: Include "fluids.h".  (scm_mark_root): Mark "fluids".
        (scm_make_root): Call scm_copy_fluids to make fluid bindings
        unique for the new root when it has a parent.
        
        * smob.h: Include "libguile/print.h" to make scm_print_state
        visible.

        * dynl.c (free_dynl_obj): New function to free the dynamic object
        data. (dynl_smob): Use it.
        * dynl.c (scm_dynamic_link): Moved allocating of the memory for
        the dynamic object data below the linking of the object to avoid
        memory leak when the linking code throws an error.  Now the code
        leaks a whole dynamically linked library when must_malloc throws,
        but that should be much less likely.

Fri Jul 11 00:19:47 1997  Jim Blandy  <jimb@floss.red-bean.com>

        Changes to compile under gnu-win32, from Marcus Daniels:
        * stime.c (tzset): If tzset isn't provided, make it a NOP.
        (scm_localtime): Change SCM_EOF to SCM_EOL.
        (scm_mktime): Likewise.
        * socket.c: Don't include sys/un.h unless autoconf tells
        us Unix domain sockets are available.
        (scm_fill_sockaddr): Ignore Unix domain code.
        (scm_addr_vector): Likewise.
        (scm_init_addr_buffer): Likewise.
        (scm_socketpair): Don't include unless socketpair was
        found during autoconf.
        * simpos.c (SYSTNAME): Treat cygwin like Unix.
        * scmsigs.c (scm_pause): Don't include unless pause was found
        during autoconf.
        * posix.c (scm_getgroups): Don't include unless support function
        was found during autoconf (in this case, getgroups).
        (scm_setpwent): For setpwent.
        (scm_setegid): For setegid.
        * net_db.c (scm_inet_netof): Don't include unless support
        function was found during autoconf (in this case, inet_netof).
        (scm_lnaof): For inet_lnaof.
        (scm_inet_makeaddr): For inet_makeaddr.
        (scm_getnet): For getnetent, getnetbyname, getnetbyaddr.
        (scm_getproto): For getprotoent.
        (scm_getserv): For getservent.
        (scm_sethost): For sethostent, endhostent.
        (scm_setnet): For setnetent, endnetent.
        (scm_setproto): For setprotoent, endprotoent.
        (scm_setserv): For setservent, endservent.
        * scmconfig.h.in: Regenerated.

Thu Jul 10 00:22:24 1997  Jim Blandy  <jimb@floss.red-bean.com>

        * stime.c (scm_localtime, scm_mktime): Pass SCM_EOL to
        scm_misc_error, not SCM_EOF.

        * error.c (scm_wta): Pass SCM_EOL to scm_misc_error as the list of
        arguments for formatting the error message, not SCM_BOOL_F.  I
        think this is left over from the (eq? '() #f) days.

        * read.c (recsexpr): Give this a dummy definition if
        DEBUG_EXTENSIONS isn't #defined.

Fri Jul  4 23:42:17 1997  Marius Vollmer  <mvo@zagadka.ping.de>

        * coop-threads.c (scm_wait_condition_variable): Lock mutex again
        after waiting.

Thu Jul  3 16:31:24 1997  Marius Vollmer  <mvo@zagadka.ping.de>

        * root.c (cwdr_outer_body): Bugfix: Pass `c' instead of `&c' to
        scm_internal_catch.

Sat Jun 28 16:14:09 1997  Tim Pierce  <twp@twp.tezcat.com>

        * Makefile.am (libguile_la_LIBADD): Remove @ALLOCA@, since
        alloca.lo will be included in @LIBLOBJS@.  Something better than
        this should be possible.
        * Makefile.in: Regenerated.

Sat Jun 28 03:40:15 1997  Gary Houston  <ghouston@actrix.gen.nz>

        * simpos.h: prototype for scm_primitive_exit.
        * simpos.c (scm_primitive_exit): new procedure, terminates the 
        process without unwinding the stack.

Sat Jun 28 03:45:25 1997  Tim Pierce  <twp@twp.tezcat.com>

        * regex-posix.c (scm_make_regexp): Make `flags' a variable-length
        argument and logior its components together, so the user doesn't
        have to do this explicitly.  Also, if regexp/basic is supplied, then
        turn off REG_EXTENDED.
        (scm_init_regex_posix): New regexp/basic symbol.
        (REG_BASIC): #define this if it is not already present.

Fri Jun 27 20:36:35 1997  Tim Pierce  <twpierce@bio-5.bsd.uchicago.edu>

        * Makefile.am (libguile_la_LIBADD): Include @ALLOCA@.
        (MOSTLYCLEANFILES): New target, changed from CLEANFILES.
        (CLEANFILES): New target, clean versiondat.h, libpath.h.
        (DISTCLEANFILES): New target, clean *.x.
        * Makefile.in: Regenerated.

Tue Jun 24 00:29:07 1997  Jim Blandy  <jimb@floss.red-bean.com>

        * script.c (scm_compile_shell_switches): Add 1997 to copyright
        years in usage message.

        * Makefile.am (libguile_la_LDFLAGS): Bump library version.
        * Makefile.in: Regenerated.

        * regex-posix.c (scm_init_regex_posix): Delete the regexp/nosub
        flag; I don't think we support it.
        (scm_make_regexp): Make sure the user doesn't pass the
        regexp/nosub flag.

        * regex-posix.c (scm_make_regexp, scm_regexp_exec): Add optional
        FLAGS arguments.
        (scm_init_regex_posix): Define constants for the REG_mumble flags;
        name them according to the SCSH convention: regexp/mumble.

        * regex-posix.h (scm_make_regexp, scm_regexp_exec): Update prototypes.

Mon Jun 23 18:44:49 1997  Jim Blandy  <jimb@floss.red-bean.com>

        * Makefile.am (libpath.h): Include the values of all the standard
        Makefile directory variables.  Print a message, but don't print
        all the commands.
        (versiondat.h): Print a message, but don't print all the commands.
        * load.c: #include "alist.h".
        (init_build_info): New function.
        (scm_init_load): Call it.
        * Makefile.in: Regenerated.

Sun Jun 22 19:12:58 1997  Jim Blandy  <jimb@floss.red-bean.com>

        * root.c: Establish a reliable catch-all handler for the new root.
        After all the Scheme handler function might signal an error too,
        and we don't want to lose that.
        (cwdr_inner_body): Renamed from cwdr_body.
        (cwdr_outer_body): New function, to establish the user's handler,
        and pass control to cwdr_inner_body.
        (cwdr): Establish the reliable catch-all handler here, and pass
        control to cwdr_outer_body.
        (struct cwdr_body_data): New field, handler, to allow cwdr to pass
        the user's handler through to cwdr_outer_body.
        * throw.c (scm_handle_by_message): Move guts into....
        (handler_message): New static function.
        (scm_handle_by_message_noexit): New function.
        * throw.h (scm_handle_by_message_noexit): New prototype.

        * __scm.h: (SCM_FENCE): New macro: optimizer will not move code
        across this.  Only works on GCC.  Otherwise, we hope for the best.
        (SCM_DEFER_INTS, SCM_ALLOW_INTS): Use FENCE appropriately.  I have
        the feeling that real thread systems will not need this...

Sun Jun 22 15:46:35 1997  Jim Blandy  <jimb@floss.red-bean.com>

        Try to detect when people are using one version of libguile and a
        different version of ice-9.  People have been skewing things and
        sending in bug reports.
        * Makefile.am (versiondat.h): New file to generate.
        * version.c: #include "versiondat.h", to get version info.
        (scm_libguile_config_stamp): New function.
        * script.c: #include "version.h".
        (scm_compile_switches): Call scm_version to get version number.
        * scmconfig.h.in, Makefile.in: Regenerated.
        * Makefile.in: Regenerated.

        * Makefile.am (ETAGS_ARGS): Catch SCM_PROC, etc. so we can find
        primitive definitions under their Scheme names.

        * Makefile.am (libguile_la_LDFLAGS): Update library version to
        1:2.  Helps avoid confusion between installed and uninstalled libs.

        * scmconfig.h.in: Regenerated.  (Needed after June 3 change to
        ../configure.in.)

        * gdb_interface.h (GDB_INTERFACE): Remove semicolon and trailing
        backslash from definition; this should be used like: GDB_INTERFACE;

Sun Jun 22 04:00:32 1997  Gary Houston  <ghouston@actrix.gen.nz>

        * ioext.c (scm_duplicate_port): bug fix: don't try to make the
        new port unbuffered until its stream has been set.

Sat Jun 21 18:44:03 1997  Gary Houston  <ghouston@actrix.gen.nz>

        * ports.h: new prototype.
        * ports.c (scm_flush_all_ports): new procedure, scsh compatible.

Sat Jun 21 00:25:03 1997  Jim Blandy  <jimb@floss.red-bean.com>

        Make things compile neatly under Sun's C compiler.
        * dynl.c (scm_dynamic_func): Cast return value from sysdep_dynl_func.
        * extchrs.c (xmbtowc): Make the second arg a normal char, not
        unsigned, because that's what the ANSI function takes.
        * extchrs.h (xmbtowc): Corresponding change to prototype.
        * genio.c (scm_gen_getc): Make buf plain chars.  Nobody wants
        uchars here.
        * mbstrings.c (scm_mb_ilength): Use ANSI arg syntax.  Make DATA
        argument plain char *.
        * strings.c (scm_string): Use SCM_ROCHARS, since c is a plain
        char.
        * tag.c (scm_tag): Remove unreachable statement.
        * unif.c (scm_array_to_list): If we want to shift a 1 bit to the
        top of the word, it should be unsigned.

        * eval.c (scm_lookupcar1): Don't declare var2 unless USE_THREADS
        is defined, to avoid warnings; it's only used in the
        conflict-checking code.  Which might go away anyway.
        (SCM_CEVAL): All goto's targeting the `dispatch' label are in
        conditionals; put the label definition in an #if too, to stifle
        warnings.

        * Makefile.am (EXTRA_DIST): Include ChangeLog-gh and
        ChangeLog-threads in the distribution.
        * Makefile.in: Regenerated.

Fri Jun 20 10:03:41 1997  Tim Pierce  <twpierce@bio-5.bsd.uchicago.edu>

        * guile-snarf.in: Changed regexp to support CPPs that insert
        whitespace between lexical tokens (which munges the `%%%' snarf
        cookie).

Tue Jun 17 13:49:56 1997  Tim Pierce  <twpierce@bio-5.bsd.uchicago.edu>

        * load.c (scm_init_load_path): Append $(datadir)/guile to
        %load-path, so modules do not have to be installed in Guile's
        current version directory.

Mon Jun 16 17:20:55 1997  Marius Vollmer  <mvo@zagadka.ping.de>

        * dynl.c (scm_dynamic_call, scm_dynamic_args_call): Wrap dynamic
        function call in SCM_DEFER_INTS/SCM_ALLOW_INTS.
        (scm_dynamic_link, scm_dynamic_unlink, scm_dynamic_func): Always
        call the sysdep functions with deferred ints.
        * dynl.c, dynl-dl.c, dynl-dld.c, dynl-shl.c (sysdep_dynl_link,
        sysdep_dynl_unlink, sysdep_dynl_func): Expect to be called with
        deferred interrupts and insert SCM_ALLOW_INTS before throwing an
        error.

        * dynl.c (scm_dynamic_unlink, scm_dynamic_call): Return
        SCM_UNSPECIFIED.

Sat Jun 14 19:00:58 1997  Gary Houston  <ghouston@actrix.gen.nz>

        * scmsigs.c (sys_deliver_signals): add a comment about a probable bug.

Wed Jun 11 00:33:00 1997  Jim Blandy  <jimb@floss.red-bean.com>

        * Makefile.in: Regenerated after xtra_PLUGIN_guile_libs change in
        ../configure.in.

Sun Jun  8 14:37:26 1997  Marius Vollmer  <mvo@zagadka.ping.de>

        * eval.c (scm_lookupcar1): New procedure to cope with a race
        condition during lookup (when using threads).
        (scm_lookupcar): Implement in terms of scm_lookupcar1.
        (SCM_CEVAL): Use scm_lookupcar1 instead of scm_lookupcar in one
        place.

Fri Jun  6 19:05:07 1997  Jim Blandy  <jimb@totoro.cyclic.com>

        * regex-posix.c (scm_regexp_exec): Use the `start' argument if
        supplied.  (Change from Tim Pierce.) 

Thu Jun  5 16:38:19 1997  Marius Vollmer  <mvo@zagadka.ping.de>

        * struct.c (init_struct): Forget to mention this in the "Wed Jun 4
        23:47:01 1997" changelog: Slots are now initialized with `#f' by
        default and not `()'.  `#f' is the canonical non-value in Scheme,
        right?

Wed Jun  4 23:47:01 1997  Marius Vollmer  <mvo@zagadka.ping.de>

        * struct.c (struct_printer): New variable that holds a handle on
        the Scheme variable *struct-printer*.  This variable can be set by
        Scheme code to override the printing of structures.
        (scm_print_struct): If struct_printer is set, call it.  If it is
        not set, or returns #f, print the structure in the old fashion.
        Include "eval.h" for scm_apply.
        
Tue Jun  3 23:01:39 1997  Marius Vollmer  <mvo@zagadka.ping.de>

        * struct.c (scm_struct_ref, scm_struct_set_x): Use
        scm_struct_i_n_words to get the number of fields, not
        -scm_struct_n_extra_words.

        On the route to fancier struct printing:
        * struct.c (scm_print_struct): New function to print a structure.
        Include "genio.h" to support it.  This function doesn't do
        anything interesting right now, but I think it should be here
        anyway.
        * struct.h: Include "print.h" and add prototype for
        scm_print_struct.
        * print.c (scm_iprin1): Call scm_print_struct instead of trying to
        print structures ourself.
        
Sun Jun  1 07:58:41 1997  Gary Houston  <ghouston@actrix.gen.nz>

        * scmsigs.c (sys_deliver_signals): bug fix: reset got_signal[i]
        before applying the handler in case it doesn't return.

Sat May 31 18:57:51 1997  Gary Houston  <ghouston@actrix.gen.nz>

        * scmsigs.h, async.h: updated.
        
        * _scm.h: if HAVE_RESTARTS is defined then don't use a SYSCALL
        loop.

        * posix.c (scm_uname): interpret only negative values as an error.
        Solaris normally returns a positive value.

        * script.c (scm_compile_shell_switches): if we are not going into
        an interactive repl, set scm_mask_ints to zero so that asyncs can
        run.

        * simpos.c (scm_system):  don't ignore/unignore signals around
        the "system" call.

        * posix.c (scm_open_pipe): don't ignore/unignore signals around
        the "popen" call.

        * init.c (scm_boot_guile_1): don't call scm_init_signals, it's
        done in boot-9.scm instead.

        * scmsigs.c, async.c: Major rewriting of signal handling code.
        (scm_sigaction): new procedure.
        (scm_sleep): don't wrap sleep in SCM_SYSCALL, it would mess up the
        timing.
        (scm_raise): return unspecified, throw error on failure.

Thu May 29 02:47:36 1997  Jim Blandy  <jimb@floss.cyclic.com>

        * regex-posix.c (scm_init_regex_posix): Register the "regex"
        feature, to help boot-9.scm decide whether to import the regex
        module. 

Thu May 29 02:19:40 1997  Jim Blandy  <jimb@floss.cyclic.com>

        * eval.c: Include scmconfig.h at the beginning of the file so that
        HAVE_ALLOCA_H may properly be defined.  Thanks to Bill Janssen for
        pointing this out.

        * regex-posix.c: #include "_scm.h" before conditionally #including
        <regex.h>; the former defines HAVE_REGCOMP.

        * regex-posix.c: #include <regex.h> conditionally, so the file is
        CPP'able (for dependency scanning) even on systems that don't have
        a <regex.h> header.

Tue May 27 23:48:38 1997  Jim Blandy  <jimb@floss.cyclic.com>

        Add new R4RS-compliant syntax for keywords.
        * read.c (scm_lreadr): Recognize `#:' as a prefix for keywords,
        regardless of the setting of the `keywords' read option.
        * kw.c (prin_kw): Print keywords using the `#:' syntax, so they
        can be re-read no matter what the setting of the `keywords' read
        option.

Tue May 27 22:47:31 1997  Tim Pierce  <twp@twp.tezcat.com>

        Add support for POSIX regular expressions.
        
        * regex-posix.c, regex-posix.h: New files. (Some code
        is taken liberally from rx/rgx.c in the old Guile dist.)

        * init.c: Include regex-posix.h.
        (scm_boot_guile_1): Call scm_init_regex_posix.
        
        * Makefile.am (EXTRA_libguile_la_SOURCES, modinclude_HEADERS):
        Add regex-posix.[ch] sources.
        * Makefile.in: Regenerated.
        
        * scmconfig.h.in: Add HAVE_REGCOMP macro.  (automake is supposed
        to do this automatically?  It didn't for me, bleh.)
        
Mon May 26 18:51:29 1997  Jim Blandy  <jimb@floss.cyclic.com>

        * fports.c (print_pipe_port): New function.
        (scm_fptob): Use print_pipe_port instead of scm_prinport; the
        latter doesn't even take the right arguments.

        * Makefile.am: Increment shared lib revision number.  I think
        sometimes the uninstalled Guile finds the installed shared lib;
        Gord says doing this might help.  As things turned out, I can't
        say whether it does.
        * Makefile.in: Regenerated.

        * gh_init.c (gh_enter): Cast c_main_prog to a void * before
        passing it as the closure argument to scm_boot_guile.  (Bill
        Janssen)
        
        * ports.c (print_void_port, putc_void_port, puts_void_port,
        write_void_port, flush_void_port, getc_void_port, close_void_port,
        noop0): Use ANSI prototypes instead of K&R declarations, so the
        initialization of void_port_ptob gets aggressively type-checked.
        Fix arguments of print_void_port and write_void_port.  (Bill
        Janssen)

        * COPYING, __scm.h, _scm.h, alist.c, alist.h, append.c, append.h,
        appinit.c, arbiters.c, arbiters.h, async.c, async.h, backtrace.c,
        backtrace.h, boolean.c, boolean.h, chars.c, chars.h,
        continuations.c, continuations.h, coop-defs.h, coop-threads.c,
        coop-threads.c.cygnus, coop-threads.h, coop-threads.h.cygnus,
        coop.c, debug.c, debug.h, dynl-dl.c, dynl-dld.c, dynl-shl.c,
        dynl-vms.c, dynl.c, dynl.h, dynwind.c, dynwind.h, eq.c, eq.h,
        error.c, error.h, eval.c, eval.h, extchrs.h, feature.c, feature.h,
        filesys.c, filesys.h, fports.c, fports.h, fsu-pthreads.h, gc.c,
        gc.h, gdbint.c, gdbint.h, genio.c, genio.h, gh.h, gh_data.c,
        gh_eval.c, gh_funcs.c, gh_init.c, gh_io.c, gh_list.c,
        gh_predicates.c, gh_test_c.c, gh_test_repl.c, gscm.c, gscm.h,
        gsubr.c, gsubr.h, guile.c, hash.c, hash.h, hashtab.c, hashtab.h,
        init.c, init.h, ioext.c, ioext.h, kw.c, kw.h, libguile.h, list.c,
        list.h, load.c, load.h, mallocs.c, mallocs.h, markers.c,
        markers.h, mbstrings.c, mbstrings.h, mit-pthreads.c,
        mit-pthreads.h, net_db.c, net_db.h, numbers.c, numbers.h,
        objprop.c, objprop.h, options.c, options.h, pairs.c, pairs.h,
        ports.c, ports.h, posix.c, posix.h, print.c, print.h, procprop.c,
        procprop.h, procs.c, procs.h, putenv.c, ramap.c, ramap.h, read.c,
        read.h, root.c, root.h, scmhob.h, scmsigs.c, scmsigs.h, script.c,
        script.h, sequences.c, sequences.h, simpos.c, simpos.h, smob.c,
        smob.h, snarf.h, socket.c, socket.h, srcprop.c, srcprop.h,
        stackchk.c, stackchk.h, stacks.c, stacks.h, stime.c, stime.h,
        strings.c, strings.h, strop.c, strop.h, strorder.c, strorder.h,
        strports.c, strports.h, struct.c, struct.h, symbols.c, symbols.h,
        tag.c, tag.h, tags.h, threads.c, threads.h, throw.c, throw.h,
        unif.c, unif.h, variable.c, variable.h, vectors.c, vectors.h,
        version.c, version.h, vports.c, vports.h, weaks.c, weaks.h: New
        address for FSF.

Mon May 26 12:37:30 1997  Jim Blandy  <jimb@floss.cyclic.com>

        * script.c (scm_find_executable): Use prototype-style definition
        here; apparently it's not quite right to have const in a prototype
        and then use a K&R declaration.  I wonder if stuff like this will
        go away if we compile with -Wrequire-prototypes, or whatever that
        is...  (Bernard URBAN)

        * scmhob.h: New text from Bernard URBAN.

Sat May 17 17:14:36 1997  Jim Blandy  <jimb@floss.cyclic.com>

        * script.c: Don't #define const on hpux.  Configure takes care of
        this.  (Thanks to Larry Schwimmer.)

        * script.c: Use the HAVE_UNISTD_H symbol provided by autoconf to
        decide whether to #include <unistd.h>, instead of listing a bunch
        of systems.  Don't #include stdio twice.  Removed dyked-out
        definition of scm_find_impl_file.

Fri May 16 03:06:08 1997  Jim Blandy  <jimb@floss.cyclic.com>

        * Makefile.am (libguile_la_LDFLAGS): Update libguile's shared
        library version info to 1:0.
        * Makefile.in: Regenerated.

        * backtrace.c, backtrace.h, debug.c, debug.h, eq.c,
        gdb_interface.h, gdbint.c, gdbint.h, gh_data.c, gh_init.c,
        gh_io.c, gh_list.c, gh_predicates.c, gh_test_c.c, gh_test_repl.c,
        init.c, net_db.c, options.c, options.h, ports.c, print.c, read.c,
        script.h, snarf.h, srcprop.c, srcprop.h, stacks.c, stacks.h,
        throw.c: Update copyright years; these files have been worked on
        significantly in 1997, but only had copyright years for 1996.
        Also, change name of copyright holder on some from Mikael
        Djurfeldt to Free Software Foundation; he has signed papers
        assigning the changes to the FSF.
        
        * script.c (scm_shell_usage): Pass FATAL to exit.  There's no
        reason not to give the user the option.

        * net_db.c (scm_gethost, scm_getnet, scm_getproto, scm_getserv):
        Return #f on end-of-file when scanning table (i.e. when called
        with no arguments).  Try to catch errors, when we can.
        * posix.c (scm_getgrgid, scm_getpwuid): Same.
        
        * script.h (scm_shell_usage, scm_compile_shell_switches): New
        external declarations.  These are useful.

Thu May 15 05:21:36 1997  Gary Houston  <ghouston@actrix.gen.nz>

        * posix.c: don't include <sys/select.h> or define macros for
        select, since they were not used in this file.

        * filesys.c (scm_select): make the fifth parameter microseconds,
        not milliseconds.  let the fourth parameter be either a real value
        or an integer or #f.  The first, second and third arguments can
        now be vectors: the type of the corresponding return set will be
        the same.
        (set_element, get_element): new static procedures.

Wed May 14 12:18:12 1997  Jim Blandy  <jimb@floss.cyclic.com>

        * strports.c (scm_eval_string): New function.
        (scm_eval_0str): Trivially re-implemented in terms of
        scm_eval_string.
        * strports.h (scm_eval_string): New extern decl.

        * net_db.c (h_errno): Add extern decl for this.

        * fports.c (local_pclose): New function.
        (scm_pipob): Use it in the initializer here.

        From Tim Pierce:
        * net_db.c (scm_gethost, scm_getproto, scm_getnet, scm_getserv):
        Use a meaningful error message when signalling an error.  For
        this, scm_gethost must check h_errno rather than errno.

Tue May 13 16:40:06 1997  Jim Blandy  <jimb@floss.cyclic.com>

        * Makefile.in: Regenerated, using automake-1.1p.

Tue May 13 04:34:52 1997  Gary Houston  <ghouston@actrix.gen.nz>

        * socket.c (scm_addr_vector): use SCM_UNDEFINED in scm_listify,
        not SCM_UNSPECIFIED.

        * script.c (scm_compile_shell_switches): don't append (quit) if
        interactive.
        (scm_shell): call scm_exit_status and exit on the result of the
        evaluation.

Mon May 12 17:23:58 1997  Jim Blandy  <jimb@floss.cyclic.com>

        Ensure that shared substrings are handled properly when passed to
        a system call or other foreign function.  Many thanks to Tim
        Pierce!
        * symbols.h (SCM_COERCE_SUBSTR): new macro.
        * filesys.c (scm_chmod, scm_rename, scm_delete_file, scm_mkdir,
        scm_rmdir, scm_opendir, scm_chdir, scm_symlink, scm_readlink,
        scm_lstat), ports.c (scm_sys_make_void_port), posix.c (scm_utime,
        scm_putenv, scm_setlocale, scm_mknod), stime.c (setzone,
        scm_strftime), vports.c (scm_make_soft_port), backtrace.c
        (scm_display_error_message): use RO macros when strings may be RO.
        * error.c (scm_error_scm), filesys.c (scm_chown, scm_chmod,
        scm_rename, scm_delete_file, scm_mkdir, scm_rmdir, scm_opendir,
        scm_chdir, scm_symlink, scm_readlink, scm_lstat), ioext.c
        (scm_freopen, scm_duplicate_port, scm_fdopen), net_db.c
        (scm_gethost, scm_getnet, scm_getproto, scm_getserv), ports.c
        (scm_sys_make_void_port), posix.c (scm_getgrgid, scm_utime,
        scm_setlocale, scm_mknod), stime.c (setzone, scm_strptime,
        scm_strftime), vports.c (scm_make_soft_port): use
        SCM_COERCE_SUBSTR to make sure shared substrings are
        null-terminated.

Mon May 12 15:33:10 1997  Jim Blandy  <jimb@totoro.cyclic.com>

        * error.c (scm_error): Add newline to error message.

        * init.c (scm_init_standard_ports): Doc fix.

Thu May  8 14:38:01 1997  Marius Vollmer  <mvo@zagadka.ping.de>

        * dynl-shl.c: Completely replaced with new code from Bernard
        URBAN.

        * script.c (scm_ice_9_already_loaded): New variable.
        (scm_compile_shell_switches): Use it.

Mon May  5 20:35:08 1997  Gary Houston  <ghouston@actrix.gen.nz>

        * filesys.c (scm_input_waiting_p): add missing third argument to
        scm_misc_error.

        * stime.c (scm_localtime): copy the result of localtime before
        calling gmtime in case they share a buffer.
        (scm_localtime, scm_mktime): throw an error if neither HAVE_TM_ZONE
        nor HAVE_TZNAME.

Fri May  2 19:07:11 1997  Gary Houston  <ghouston@actrix.gen.nz>

        * eq.c (scm_equal_p): use SCM_TYP7SD (y) not SCM_TYP7SD (x).
        
Thu May  1 17:01:45 1997  Jim Blandy  <jimb@floss.cyclic.com>

        * Makefile.am (check-local): New target, which causes 'make check'
        to run gh_test_c and gh_test_repl, with some trivial input.
        * Makefile.in: Rgnrtd.

Tue Apr 29 19:00:40 1997  Marius Vollmer  <mvo@zagadka.ping.de>

        * dynl.c (print_dynl_obj): Indicate whether the dynamic object has
        been unlinked.

Mon Apr 28 06:10:14 1997  Gary Houston  <ghouston@actrix.gen.nz>

        * async.c (scm_sys_tick_async_thunk): commented out.  I'm not
        sure how this was supposed to work.
        (scm_async_click): don't send SCM_TICK_SIGNAL.
        (scm_init_async): don't initialize %tick-thunk.

        * the following change doesn't affect the Scheme interface:
        gc-thunk is called at the end of garbage collection.  however it's
        no longer implemented by pretending it's a signal.
        
        * gc.c (scm_gc_end): don't call scm_take_signal.  instead mark the
        system async corresponding to scm_gc_thunk.
        * async.h: declare scm_gc_async.
        * async.c (scm_sys_gc_async_thunk): apply the thunk named by
        gc-thunk directly, instead of going through a signal handler.
        (scm_gc_async): new variable, points to the GC system-async.
        (scm_init_async): save the GC async as scm_gc_async instead
        of using system_signal_asyncs.
        (scm_gc_vcell): new variable, stores the gc-thunk vcell.

Mon Apr 28 19:14:44 1997  Jim Blandy  <jimb@floss.cyclic.com>

        * Makefile.am (libpath.h, cpp_err_symbols.c, cpp_sig_symbols.c):
        Don't screw up if we're interrupted.
        * Makefile.in: Regeneradet.

Sun Apr 27 17:57:15 1997  Jim Blandy  <jimb@floss.cyclic.com>

        * aclocal.m4: Removed; unnecessary, given changes of Apr 24.

        * Makefile.am (modincludedir): Use "ice-9" instead of "@module@";
        we're not using AM_INIT_GUILE_MODULE any more.
        * Makefile.in: Reneregated.

Thu Apr 24 00:41:08 1997  Jim Blandy  <jimb@floss.cyclic.com>

        Functions for finding variable bindings, grace à Tim Pierce.
        * gh_data.c (gh_lookup, gh_module_lookup): New functions.
        * gh.h (gh_lookup, gh_module_lookup): New prototypes.

        Get 'make dist' to work again.
        * Makefile.am (EXTRA_DIST): Remove PLUGIN files.
        * Makefile.in: Regenerated, like a surry without a fringe on top.

        Changes for reduced Guile distribution: one configure script,
        no plugins.
        * configure.in, configure: Removed.
        * acconfig.h, acinclude.m4: Moved to parent directory, where the
        real configure script lives.
        * Makefile.in, scmconfig.h.in: Regenerated.

        * init.c: #include "script.h", to get prototype for script.c's
        init function.

Wed Apr 23 21:25:39 1997  Jim Blandy  <jimb@floss.cyclic.com>

        * gh_data.c (gh_scm2newstr, gh_symbol2newstr): Use
        scm_must_malloc, not raw malloc.

        * script.c (scm_compile_shell_switches): Dyke out debugging output
        code.

Mon Apr 21 05:00:32 1997  Gary Houston  <ghouston@actrix.gen.nz>

        * eq.c (scm_equal_p): use "SCM_TYP7SD", not "SCM (TYP7SD".

        * stime.c: include both <sys/times.h> and <sys/timeb.h> if the
        system has them.  Hope this is safe.  Previously
        sys/timeb.h was included if HAVE_FTIME was defined or if
        HAVE_SYS_TIMEB_H was defined but HAVE_SYS_TIMES_H was not,
        but IRIX iris 5.3 apparently has ftime but not sys/timeb.h.

        * ioext.c (scm_setfileno): add missing third argument to
        scm_misc_error call.

Sun Apr 20 15:09:31 1997  Jim Blandy  <jimb@totoro.cyclic.com>

        * eq.c (scm_equal_p): Correctly compare strings of different
        varieties.  (Thanks to Tim Pierce.)

Sat Apr 19 03:59:02 1997  Jim Blandy  <jimb@floss.cyclic.com>

        * read.c (skip_scsh_block_comment): SCSH says the !# that ends a
        #! block comment must occur on a line all by itself.

        Move most of the guts of shell command processing into libguile,
        so guile.c can be very small (and eventuallly auto-generated.  (I
        mean, generated mechanically, not self-generated.  Hmm.))
        * guile.c, script.c, script.h: New source files.
        * init.c (scm_boot_guile_1): Call scm_init_script.
        * libguile.h: #include "script.h".
        * Makefile.am (bin_PROGRAMS, guile_SOURCES, guile_LDADD): New
        targets, for new executable.
        (libguile_la_SOURCES): Mention script.c.
        (modinclude_HEADERS): Add script.h.
        * configure.in: Always check for -lm, -lsocket, -lnsl, whether or
        not dynamic linking is enabled.  This is because we're generating
        executables now.  Move CY_AC_WITH_THREADS call after those, so the
        values of cy_cv_threads_libs captures the libs chosen above.
        * Makefile.in, configure, aclocal.m4: Regenerated.

        * Makefile.am (EXTRA_DIST): Don't distribute gscm.c or gscm.h.
        We don't maintain this interface any more, and it just confuses
        people.

        * alloca.c: #include <scmconfig.h>, not <config.h>.
        * Makefile.am (EXTRA_libguile_la_SOURCES): Mention alloca.c, so
        it'll get included in disties.

Thu Apr 17 17:45:10 1997  Jim Blandy  <jimb@totoro.cyclic.com>

        * gscm.c, gscm.h: These aren't supported any more, and shouldn't
        be distributed, because they confuse people.
        * Makefile.am (EXTRA_DIST): Remove gscm.c, gscm.h.

Sat Apr 19 11:56:18 1997  Tim Pierce  <twp@twp.tezcat.com>

        * configure.in: check for presence of gethostent (not present on
        OpenBSD by default).
        * net_db.c (scm_gethost): Check HAVE_GETHOSTENT.
        * configure, scmconfig.h.in: Regenerated.

Wed Apr 16 17:52:38 1997  Jim Blandy  <jimb@floss.cyclic.com>

        * backtrace.c (scm_backtrace): Split message string across
        newlines properly.  GCC is more tolerant of this than other
        compilers.

Mon Apr 14 20:20:14 1997  Jim Blandy  <jimb@floss.cyclic.com>

        Merge threads directory into libguile.
        * coop-defs.h, coop-threads.c, coop-threads.h, coop.c, threads.c,
        threads.h: New source files.
        * Makefile.am (EXTRA_libguile_la_SOURCES): Add threads.c.
        (noinst_HEADERS): Add coop-threads.c, coop-threads.h, coop.c
        here; see comment.
        (modinclude_HEADERS): Add threads.h, coop-defs.h.
        (EXTRA_DIST): Add fsu-pthreads.h, mit-pthreads.c, mit-pthreads.h,
        coop-threads.c.cygnus, coop-threads.h.cygnus.
        * configure.in: If we're using threads, include threads.o in
        LIBOBJS.
        * _scm.h, libguile.h: threads.h lives in this directory now.
        * fsu-pthreads.h, mit-pthreads.c, mit-pthreads.h,
        coop-threads.c.cygnus, coop-threads.h.cygnus: New files, not
        currently used, but brought along for information's sake.
        * ChangeLog-threads: log from old 'threads' directory.
        * Makefile.in, configure: Rebuilt.

Mon Apr 14 20:15:29 1997  Jim Blandy  <jimb@totoro.cyclic.com>

        * stime.c (scm_mktime): #ifndef HAVE_TM_ZONE, Use lt.tm_zone, not
        lt->tm_zone.

Mon Apr 14 01:32:57 1997  Jim Blandy  <jimb@floss.cyclic.com>

        * gh_init.c (gh_standard_handler): Return SCM_BOOL_F, not garbage.

        Merge GH interface library into libguile.
        * gh.h, gh_data.c, gh_eval.c, gh_funcs.c, gh_init.c, gh_io.c,
        gh_list.c, gh_predicates.c, gh_test_c.c, gh_test_repl.c: New files.
        * Makefile.am (libguile_la_SOURCES): Add gh_data.c, gh_eval.c,
        gh_funcs.c, gh_init.c, gh_io.c, gh_list.c, gh_predicates.c.  Move
        _scm.h to ...
        (EXTRA_libguile_la_SOURCES): ... here.
        (pkginclude_HEADERS): Add variable, to get gh.h installed.
        (THREAD_LIBS, check_ldadd, check_PROGRAMS, gh_test_c_SOURCES,
        gh_test_c_LDADD, gh_test_repl_SOURCES, gh_test_repl_LDADD):
        New variables, describing how to build the gh test programs.
        * configure.in: Check for -lm, -lsocket, -lnsl; we need this to
        build the test programs, and we probably should have been linking
        libguile.la against them all along, to support AIX shared libs.
        Add cflags for threads to CFLAGS; add libs for threads to new
        variable THREAD_LIBS, used in Makefile.am.
        * ChangeLog-gh: log from old `gh' subdirectory. 
        * Makefile.in, configure, scmconfig.h.in: Rebuilt.

Sun Apr 13 23:03:55 1997  Jim Blandy  <jimb@floss.cyclic.com>

        * acconfig.h: Undo change of Apr 9; including the definition of
        PACKAGE in the guile headers conflicts with applications' own
        definitions.
        * scmconfig.h.in: Regenerated.

Fri Apr 11 14:12:13 1997  Jim Blandy  <jimb@floss.cyclic.com>

        * filesys.c (scm_fcntl): New function from Roland McGrath.
        (scm_init_filesys): New symbols for use with fcntl.
        * filesys.h: Added prototype.

        * eval.c (SCM_APPLY): Set debug apply frame argument list correctly
        when PROC is receiving no arguments.

Fri Apr 11 19:39:32 1997  Jim Blandy  <jimb@totoro.cyclic.com>

        * filesys.c (S_ISSOCK): Define this if it's missing, but we do
        have S_IFSOCK.  This is the case under Ultrix.

        * posix.c (scm_status_exit_val, scm_status_exit_val,
        scm_status_term_sig, scm_status_stop_sig): Modified to work with
        Ultrix versions of WIFSTOPPED, etc., which assume that their
        arguments are lvalues (hmm).

Thu Apr 10 15:10:07 1997  Jim Blandy  <jimb@floss.cyclic.com>

        * eval.c: Doc fixes.

        * throw.c: Doc fixes; rearranged.

        * putenv.c: #include "libguile/scmconfig.h", not <config.h>.

Wed Apr  9 18:01:20 1997  Jim Blandy  <jimb@floss.cyclic.com>

        * acconfig.h: Added entry for PACKAGE.
        * scmconfig.h.in: Regenerated.

        Changes to work with automake-1.1n, which has better libtool support.
        * Makefile.am: Use lib_LTLIBRARIES instead of lib_PROGRAMS.
        Use libguile_la_LIBADD instead of libguile_la_LDADD.  (What's the
        difference here?)
        (libguile_la_SOURCES, modinclude_HEADERS, EXTRA_DIST): Format for
        readability.
        * Makefile.in: Rebuild.

Wed Apr  9 09:08:54 1997  Gary Houston  <ghouston@actrix.gen.nz>

        * stime.c (scm_mktime): take an optional zone argument.
        (scm_localtime): check putenv return value.
        (scm_strftime, scm_strptime): moved from posix.c.  move #include
        sequences.h too.
        stime.h, posix.h: update prototypes.
        (bdtime2c, setzone, restorezone): new static procedures.
        (scm_mktime, scm_strftime): use them.
        (scm_strftime): don't call mktime before strftime.  Use
        filltime for return value.
        (filltime): convert NULL zname to #f.
        (scm_strptime): return a count of characters consumed, not
        the remaining string.

Sun Apr  6 05:44:11 1997  Gary Houston  <ghouston@actrix.gen.nz>

        * stime.c (scm_localtime): check HAVE_TM_ZONE and HAVE_TZNAME.
        (scm_mktime): likewise.
        Declare *tzname[].
        Uncomment localtime and mktime.

        * configure.in: add AC_STRUCT_TIMEZONE.

Sat Apr  5 23:56:40 1997  Gary Houston  <ghouston@actrix.gen.nz>

        * stime.c (scm_init_stime): don't define ticks/sec.
        (scm_gettimeofday): renamed from scm_time_plus_ticks (avoids multiple
        return value problem and is still portable.)

Sat Apr  5 17:59:24 1997  Jim Blandy  <jimb@floss.cyclic.com>

        * cpp_err_symbols.in: Renamed from cpp_err_symbols, to avoid
        make's implicit cpp_err_symbols: cpp_err_symbols.c rule.
        * cpp_sig_symbols.in: Renamed from cpp_sig_symbols.
        * Makefile.am (check_errnos, check_signals, cpp_sig_symbols.c,
        cpp_err_symbols.c): Corresponding changes.
        * Makefile.in: Regenerated.

Sat Apr  5 02:39:02 1997  Gary Houston  <ghouston@actrix.gen.nz>

        * posix.c (scm_putenv): don't check HAVE_PUTENV.
        * Makefile.am (EXTRA_libguile_la_SOURCES): add putenv.c.
        * configure.in: move putenv from AC_CHECK_FUNCS to AC_REPLACE_FUNCS.
        * putenv.c: new file, from sh-utils 1.12.

        * posix.c (scm_environ): use malloc in place of scm_must_malloc
        since allocation isn't for Scheme objects.
        (scm_putenv): copy strings before placing in the environment.

        * stime.c (scm_current_time): throw an error if time returns -1,
        instead of returning #f.
        (scm_get_internal_real_time, scm_get_internal_real_time): use
        scm_long2num for return value instead of SCM_MAKINUM.

        * stime.h: prototypes updated.

        * stime.c (scm_time_in_msec): apparently unused, deleted.

Fri Apr  4 08:53:41 1997  Gary Houston  <ghouston@actrix.gen.nz>

        * configure.in: check for gettimeofday.

        * stime.c (scm_time_plus_ticks): new procedure, an scsh interface
        which may be more usefully portable than a gettimeofday interface.

Wed Apr  2 17:11:39 1997  Jim Blandy  <jimb@totoro.cyclic.com>

        * Makefile.am (EXTRA_DIST): It's cpp_err_symbols, not
        cpp_err_signals.
        * Makefile.in: Regenerated.

Mon Mar 31 03:22:37 1997  Gary Houston  <ghouston@actrix.gen.nz>

        * stime.c (filltime): recovered static procedure.
        (scm_localtime, scm_gmtime, scm_mktime, scm_tzset): recovered from
        an earlier Guile.

        * posix.h: add prototype for scm_close_pipe, remove prototypes for
        scm_open_input_pipe, scm_open_output_pipe, change scm_mknod prototype.

        * posix.c (scm_mknod): split the mode argument into type and perms
        arguments, like the extra fields returned by stat.

        * fports.c (scm_pipob): set the close, free and print procedures.
        (scm_close_pipe): new procedure.

        * posix.c (scm_open_input_pipe, scm_open_output_pipe): deleted,
        define them in boot-9.scm

Wed Mar 26 04:10:32 1997  Gary Houston  <ghouston@actrix.gen.nz>

        * ioext.c (scm_setfileno): throw a runtime error if SET_FILE_FD_FIELD
        wan't defined.  Don't include fd.h.

        * Previously fd.h was regenerated whenever configure was run,
        forcing a couple of files to be recompiled.

        * fd.h.in: deleted, SET_FILE_FD_FIELD moved to ioext.c.
        * configure.in: AC_DEFINE FD_SETTER instead of HAVE_FD_SETTER.
        Check for _fileno as well as _file.
        Don't output fd.h.
        * ioext.c: don't fd.h.
        * acconfig.h: remove duplicate HAVE_FD_SETTER and change the
        other to FD_SETTER.

        * Change the stratigy for getting information about errno
        (and now signal number) values, e.g., ENOSYS, SIGKILL.  Instead of
        generating lists of symbols during the build process, which will
        not always work, include comprehensive lists in the distribution.
        To help keep the lists up to date, the "check_signals" and
        "check_errnos" make targets can be used.
        
        * configure.in: don't check for a command to extract errno codes.
        * Makefile.am: update file lists, remove errnos.list and errnos.c
        targets, add cpp_err_symbols.c, cpp_sig_symbols.c, check_signals,
        check_errnos targets.
        (CLEANFILES): remove errnos.c and errnos.list, add
        cpp_err_symbols_here cpp_err_symbols_diff cpp_err_symbols_new
        cpp_sig_symbols_here cpp_sig_symbols_diff cpp_sig_symbols_new
        * errnos.default: deleted.
        * cpp_signal.c: new file.
        * cpp_errno.c: renamed from errnos_get.c.
        * cpp_err_symbols, cpp_sig_symbols: new files.
        * cpp_cnvt.awk: renamed from errnos_cnvt_awk.
        * error.c (scm_init_error): #include cpp_err_symbols instead of
        errnos.c.
        * posix.c (scm_init_posix): don't intern signal symbols.  #include
        cpp_sig_symbols.c.

Tue Mar 25 04:51:10 1997  Gary Houston  <ghouston@actrix.gen.nz>

        * strop.c (scm_i_index): allow the lower bound to be equal to the
        length of the string, so a null string doesn't always give an error.

        * posix.h: new prototypes.
        * posix.c (scm_status_exit_val, scm_status_term_sig,
        scm_status_stop_sig): new functions, as in scsh.  They break down
        process status values as returned by waitpid.

Sat Mar 22 18:16:29 1997  Gary Houston  <ghouston@actrix.gen.nz>
        
        * net_db.c (scm_gethost): don't check HAVE_GETHOSTENT, since 
        configure doesn't know about it.

Fri Mar 21 23:49:28 1997  Mikael Djurfeldt  <mdj@mdj.nada.kth.se>

        * snarf.h, backtrace.c: Name change SCM_GLOBAL --> SCM_VCELL.

        * snarf.h: Added new macros SCM_GLOBAL_SYMBOL and SCM_GLOBAL_VCELL
        which defines C variables with global linkage.

Mon Mar 17 05:57:11 1997  Mikael Djurfeldt  <mdj@mdj.nada.kth.se>

        * snarf.h (SCM_PROC1): Bugfix: Use (void) rather than (...) for
        zero arg subrs.

Sun Mar 16 11:43:49 1997  Mikael Djurfeldt  <mdj@floss.cyclic.com>

        * eval.c (safe_setjmp): Temporarily use old setjmp until someone
        has time to check why this doesn't work well with continuations.

Sun Mar 16 05:09:55 1997  Jim Blandy  <jimb@totoro.cyclic.com>

        * Fix shell syntax error; some shells won't tolerate 
        multiple "fi" statements on a single line.  (Thanks to Fred Fish.)

Sat Mar 15 01:11:40 1997  Gary Houston  <ghouston@actrix.gen.nz>

        * posix.c (scm_uname): throw an error if uname fails instead
        of returning errno.

        * error.h (scm_errno, scm_perror): obsolete prototypes removed.

        * error.c (err_head, scm_errno, scm_perror): obsolete procedures
        removed.

        * async.c (scm_ints_disabled): definition moved from error.c.

Sat Mar 15 00:06:08 1997  Mikael Djurfeldt  <mdj@mdj.nada.kth.se>

        * acconfig.h: Removed PACKAGE.

        * scmconfig.h.in: Regenerated.

        * snarf.h: g++ says it's non-portable not to specify the first
        argument in a varargs declaration.  I introduced the first
        argument by using preprocessor conditionals.

Thu Mar 13 21:28:25 1997  Gary Houston  <ghouston@actrix.gen.nz>

        * ioext.c (scm_read_delimited_x): use RO string macros for delims.
        (scm_freopen): use RO string macros for filename and modes.
        (scm_duplicate_port, scm_fdopen): use RO string macros for modes.

        * posix.c (scm_getgrgid): simplify conversion of name to C string.
        (scm_mknod): use RO string macros for path.

        * socket.c (scm_fill_sockaddr, scm_send, scm_sendto):
        use SCM_ROSTRINGP, SCM_ROCHARS, SCM_ROLENGTH.
        
        * net_db.c (scm_gethost, scm_getnet, scm_getproto, scm_getserv):
        use SCM_ROSTRINGP and SCM_ROCHARS.

Thu Mar 13 18:31:33 1997  Mikael Djurfeldt  <mdj@mdj.nada.kth.se>

        * unif.c (scm_array_set_x): Cast ICHR (obj) to char if storing in
        a scm_tc7_byvect.

        * ramap.c (scm_ra_matchp, scm_array_fill_int, racp,
        scm_array_index_map_x, raeql_1, scm_array_equal_p): Completed
        support for byte vectors.

        * print.c (scm_iprin1): Limit number of vector elements printed
        according to pstate->length.

Thu Mar 13 00:12:35 1997  Gary Houston  <ghouston@actrix.gen.nz>

        * backtrace.c (scm_display_error_message): don't segv if message
        is an immediate.

        * error.h: prototype for scm_error_scm.

        * error.c (scm_error_scm): new procedure, reimplements scm-error
        in C and uses scm_error.

Tue Mar 11 03:51:00 1997  Gary Houston  <ghouston@actrix.gen.nz>

        * read.c (scm_read_hash_extend): make scm_read_hash_procedures a 
        pointer to the Scheme variable read-hash-procedures and intern it
        in scm_init_read. Modify scm_read_hash_extend and 
        scm_get_hash_procedure to use the pointer.

Mon Mar 10 06:28:54 1997  Gary Houston  <ghouston@actrix.gen.nz>        

        * read.h (SCM_N_READ_OPTIONS): increase SCM_N_READ_OPTIONS to 4.
        (SCM_KEYWORD_STYLE): defined.

        * read.c (scm_read_opts): add a keywords option.  This isn't a
        boolean option, in case someone wants to add support for DSSSL
        keywords too.
        Setup scm_keyword_prefix symbol.
        (scm_lreadr): Only process keywords if SCM_KEYWORD_STYLE is
        set to 'prefix.
        I've left keyword support disabled by default, since it doesn't
        seem to break the module system and it gives R4RS standard behaviour.
        It can be reactivated with (read-set! keywords 'prefix).

Sun Mar  9 14:14:39 1997  Mikael Djurfeldt  <mdj@mdj.nada.kth.se>

        * arbiters.c (scm_make_arbiter): Bugfix: Must SCM_DEFER_INTS
        before constructing arbiter.

        * eval.c (scm_m_define): Bugfix: Check that the object is a
        closure before setting the procedure property!

        * ports.h: Removed prototype for scm_ungetc_char_ready_p.

        * ports.c: Removed `ungetc-char-ready?'.

Sat Mar  8 00:27:05 1997  Gary Houston  <ghouston@actrix.gen.nz>

        * read.c (scm_init_read): intitialise scm_read_hash_procedures
        (idea from Mikael: make it a pair so scm_permanent object only
        called once.)
        (scm_read_hash_extend): don't call scm_permanent_object.
        (ideas from Mikael): if chr is already in the list, replace its
        procedure instead of appending it again.  If proc is #f, remove
        it from the list.
        (scm_get_hash_procedure): take CDR of scm_read_hash_procedures.

        * strports.c (scm_read_0str, scm_eval_0str): update scm_read usage.

        * gdbint.c (gdb_read): update scm_lreadr usage.

        * load.h: update prototypes.

        * load.c (scm_primitive_load, scm_read_and_eval_x,
        scm_primitive_load_path): remove case_insensitive_p, sharp arguments.

        * read.h: add prototype for scm_read_hash_extend.  Change args for
        other prototypes.
        
        * read.c (scm_read_hash_procedures): new variable.
        (scm_read_hash_extend): new procedure.
        (scm_get_hash_procedure): new procedure.
        (scm_lreadr): use scm_get_hash_procedure instead of an argument
        for extended # processing.
        (scm_read, scm_lreadr, scm_lreadrecparen, scm_lreadparen,
        scm_read_token): remove case_i, sharp arguments.  Change callers.

Fri Mar  7 08:58:21 1997  Gary Houston  <ghouston@actrix.gen.nz>

        * read.h (SCM_N_READ_OPTIONS): increase to 3.
        (SCM_CASE_INSENSITIVE_P): define.

        * read.c: add case-insensitive option to scm_read_opts.
        (scm_read_token): use SCM_CASE_INSENSITIVE_P instead of an argument
        to determine whether to convert symbol case.
        (default_case_i): definition removed.
        * read.c (scm_read_token): if case_i, downcase ic before doing
        anything with it.

Sat Mar  8 03:49:03 1997  Mikael Djurfeldt  <mdj@mdj.nada.kth.se>

        * configure.in: Added configuration option `guile-debug'.
        Configure with --enable-guile-debug if you want a bunch of extra
        functions used for debugging when developing Guile.

        * acconfig.h: Added new preprocessor symbol GUILE_DEBUG.

        * procs.c (make-cclo): New undocumented debugging procedure: Make
        compiled closure with internal procedure PROC and length LENGTH.
        Only compiled if GUILE_DEBUG is defined.

        * debug.c: Only include `debug-hang' if GUILE_DEBUG is defined.

        * print.c: Put #ifdef GUILE_DEBUG around `current-pstate'.

        * ports.c: Changed preprocessor symbol DEBUG --> GUILE_DEBUG.

        * eval.c (SCM_CEVAL): Added code sections for handling of rpsubrs
        with 3 or more args internally to the evaluator.

Fri Mar  7 19:38:18 1997  Mikael Djurfeldt  <mdj@mdj.nada.kth.se>

        * eval.c (SCM_CEVAL): Added code sections for handling of asubrs
        with 3 or more args internally to the evaluator.  This is mainly
        because we don't want to pass entry and exit points of the
        debug support twice, but it also seems to increase the speed of
        the evaluator for such calls (e. g. (+ 1 2 3)).

        * backtrace.c (scm_display_application): New procedure:
        display-application; Set fancy printing parameters individually
        for different types of display (backtrace, error, application).
        (These should of course be customizable!)

        * debug.h (SCM_RESET_DEBUG_MODE): Bugfix: The old code didn't
        clear the CHECK-flags.

Thu Mar  6 00:53:02 1997  Mikael Djurfeldt  <mdj@mdj.nada.kth.se>

        * tags.h, eval.c (iqq): Fixes to comments about SCM_ECONSP.

Wed Mar  5 23:31:21 1997  Mikael Djurfeldt  <mdj@mdj.nada.kth.se>

        * tags.h (SCM_ECONSP, SCM_NECONSP): Bugfix: Discriminate structs
        from pairs with a GLOC in the car.

        * symbols.c (msymbolize): Bugfix: Also initialize SCM_SYMBOL_HASH,
        otherwise `symbol-hash' will behave badly.
        (scm_symbol_hash): Bugfix: Must msymbolize if tc7_ssymbol, othwise
        we get segmentation fault!

        * symbols.c: Added #include "weaks.h".  New functions:
        `builtin-bindings' and `builtin-weak-bindings'.  (These will be
        moved to an extraneous library when we split libguile.)

Tue Mar  4 19:50:07 1997  Mikael Djurfeldt  <mdj@mdj.nada.kth.se>

        * filesys.c (scm_stat): stat now takes fport arguments too as
        documented in the manual.

Mon Mar  3 07:11:33 1997  Mikael Djurfeldt  <mdj@mdj.nada.kth.se>

        * debug.c (scm_single_step): Bugfix: Call continuation with
        scm_call_continuation instead of throwing to it.

Mon Mar  3 09:07:56 1997  Gary Houston  <ghouston@actrix.gen.nz>

        * ports.c (scm_char_ready_p): bug fix: in SCM_PROC char-ready's
        argument wasn't declared to be optional.

Sun Mar  2 16:34:40 1997  Mikael Djurfeldt  <mdj@mdj.nada.kth.se>

        * stime.c (scm_init_stime): Add feature "current-time".

Sun Mar  2 06:37:31 1997  Gary Houston  <ghouston@actrix.gen.nz>

        * throw.h: prototype for scm_exit_status.
        * throw.c (scm_handle_by_message): if a 'quit is caught, use its
        args to derive an exit status.  Allows (quit) to work from a
        script.
        (scm_exit_status): new function.
        #include "eq.h".

Sat Mar  1 00:09:15 1997  Mikael Djurfeldt  <mdj@mdj.nada.kth.se>

        * eval.c (scm_deval): Removed some old code.
        (ENTER_APPLY): Bugfix: Reset apply-frame trap on trap as is done
        with the others.
        (ENTER_APPLY, scm_deval): Reset trace flag on apply-frame and
        exit-frame traps.

        * symbols.c (msymbolize): Bugfix: Must initialize property list to
        SCM_EOL.

        * procs.c: Introduce the existent C function scm_thunk_p at the
        Scheme level as well.

Wed Feb 26 12:53:58 1997  Mikael Djurfeldt  <mdj@mdj.nada.kth.se>

        * symbols.c, symbols.h (scm_symbol_value0): New function.  Can be
        used from C to easily lookup the value of a symbol in the current
        module.

Tue Feb 25 00:14:10 1997  Mikael Djurfeldt  <mdj@mdj.nada.kth.se>

        * unif.c (scm_init_unif): Added #include "unif.x".  (There are two
        scm_init_unif in this file.  This will also fix a previous problem
        with guile-snarf.)

        * configure.in: Added AM_MAINTAINER_MODE

Fri Feb 21 23:07:26 1997  Mikael Djurfeldt  <mdj@mdj.nada.kth.se>

        * gdb_interface.h (GDB_INTERFACE): Added some (void *) casts to
        avoid warnings.

Fri Feb 21 18:00:38 1997  Marius Vollmer  <mvo@zagadka.ping.de>

        * Makefile.am (EXTRA_libguile_la_SOURCES): New variable to hold
        source files that are not always included in libguile but should
        have their dependencies calculated by automake.  This variable is
        recognized by automake, no further magic is needed.
        (libguile_la_DEPENDENCIES): Changed to @LIBLOBJS@.  Libtool wants
        to deal exclusively with *.lo files, as it seems.  The *.o files
        are built automatically when the corresponding *.lo file gets
        built.

Wed Feb 19 14:04:23 1997  Jim Blandy  <jimb@floss.cyclic.com>

        * list.h (scm_list_cdr_ref): Delete prototype; function no longer
        exists.

Thu Feb 13 21:44:07 1997  Gary Houston  <ghouston@actrix.gen.nz>

        * unif.c (scm_array_set_x): minor change to argument error checking.

Tue Feb 11 18:19:47 1997  Jim Blandy  <jimb@floss.cyclic.com>

        * Makefile.am (libguile_la_SOURCES): Remove backtrace.c, debug.c,
        inet_aton.c, srcprop.c, stacks.c, and strerror.c from this list.
        They should only be included in the library at configure.in's
        discretion.
        (libguile_la_LDADD): Include the appropriate .lo files here.
        (libguile_la_DEPENDENCIES): List the corresponding .o files here,
        so we know when to build them (and their .lo bretheren).
        * configure.in (LIBLOBJS): New substituted variable.  We let
        configure decide which .o files to include in LIBOBJS, and then
        put the corresponding list of .lo files in LIBLOBJS.  The latter
        is what we pass to libtool.
        * Makefile.in, configure: regenerated.

Mon Feb 10 00:08:08 1997  Mikael Djurfeldt  <mdj@kenneth>

        * symbols.c (scm_sysintern0): New function.  Contains the core of
        old scm_sysintern but doesn't take a second value argument.
        (scm_sysintern): Now uses scm_sysintern0.
        (scm_sysintern_no_module_lookup): Renamed to
        scm_sysintern0_no_module_lookup and doesn't take a second value
        argument any longer.

        * symbols.h (scm_sysintern0: Added declaration.
        
        * options.c (scm_init_opts): Use scm_sysintern0 instead of
        scm_sysintern when interning option keys.  Otherwise we risk
        destroying the values of already interned variables.

        * symbols.c (scm_sym2vcell): Bugfix: Treat definedp as
        scheme-level boolean (use SCM_NFALSEP).

        * backtrace.c (scm_init_backtrace): Make Scheme-level variable
        `the-last-stack'.
        (scm_backtrace): New function. (C version of old function from
        boot-9.scm) Motivation: Make it possible to display backtraces
        without depending on boot-9.scm.  (I'm uncertain if this
        motivation is good enough...)

        * root.h (scm_root_state): Add member the_last_stack_var.
        (scm_the_stack_var): Defined to scm_root->the_last_stack_var.

        * root.c (mark_root): Mark scm_the_last_stack_var.

        * init.c (scm_start_stack): Initialize scm_the_last_stack_var to
        SCM_BOOL_F.

Sun Feb  9 18:04:41 1997  Mikael Djurfeldt  <mdj@kenneth>

        * throw.c (mark_lazy_catch, free_lazy_catch): Removed.
        1. mark_lazy_catch didn't mark the smob.
        2. Both functions above have standard variants:
        (lazy_catch_funs): Changed mark_lazy_catch --> scm_mark0,
        free_lazy_catch --> scm_free0.

Fri Feb  7 17:30:26 1997  Jim Blandy  <jimb@floss.cyclic.com>

        * throw.c (scm_internal_lazy_catch): New function.
        (scm_lazy_catch): Rewritten to use it.
        (scm_ithrow): Handle the new lazy catch representation.
        Use SCM_LAZY_CATCH_P, instead of assuming that any wind list entry
        that doesn't have a jmpbuf is a lazy catch clause.
        (tc16_lazy_catch, struct lazy_catch, mark_lazy_catch,
        free_lazy_catch, print_lazy_catch, lazy_catch_funs,
        make_lazy_catch, SCM_LAZY_CATCH_P): Support funs, including a new
        smob.
        (scm_init_throw): Register the new lazy-catch smob type.
        * throw.h (scm_internal_lazy_catch): decl for new function.

        * throw.c (scm_internal_catch): Doc fixes.

        * alloca.c: New file, needed to support the AC_FUNC_ALLOCA call in
        configure.in.  Including this might cause problems if applications
        that link against libguile include their own copies of alloca, but
        if they're using autoconf, they should be adding libguile to LIBS
        before calling AC_FUNC_ALLOCA anyway, in which case they'll find
        the copy in libguile, and things will be okay.  (I think.)

Thu Feb  6 03:10:32 1997  Gary Houston  <ghouston@actrix.gen.nz>

        * strop.c (scm_string_upcase_x, scm_string_downcase_x): moved from
        unif.c.
        strop.h: move prototypes too.

Wed Feb  5 08:33:00 1997  Gary Houston  <ghouston@actrix.gen.nz>

        * posix.c (scm_init_posix): don't intern EINTR since it's now done
        elsewhere.

        * ioext.c (scm_init_ioext): don't intern stat macros, S_IRUSR
        etc.  I deleted them from filesys.c long ago, but didn't
        notice they were here too (although ineffective since 
        sys/stat.h wasn't included).

Tue Feb  4 18:17:50 1997  Tom Tromey  <tromey@cygnus.com>

        * eval.c: Don't define alloca in GCC case.  gcc will automatically
        use __builtin_alloca if appropriate.

Tue Feb  4 16:57:40 1997  Jim Blandy  <jimb@floss.cyclic.com>

        * eval.c (safe_setjmp): New function: trivial wrapper for setjmp.
        (SCM_CEVAL, SCM_APPLY): Call it, instead of setjmp, to make sure
        that values of automatic variables are preserved.  See comments
        for safe_setjmp for details.

        Change from Thomas Morgan:
        * variable.c: Include eq.h.
        (var_equal): New function.
        (variable_smob): Use var_equal as the discriminator for variables.

        * throw.c (s_throw): Remove extraneous declaration.

        * configure.in: Call AC_FUNC_ALLOCA, to see if we have alloca.
        * eval.c: Add necessary CPP cruft to support that.
        * configure, Makefile.in, scmconfig.h.in: regenerated.

        Change from Thomas Morgan:
        * procprop.c (scm_procedure_properties): Convert the Scheme
        boolean returned by scm_procedure_p into a C boolean before using
        it as a condition for SCM_ASSERT.
        (scm_procedure_property): Likewise.

        * simpos.c (SYSTNAME): Accept both 'unix' and '__unix' as
        indications of Unixness.
        * stime.c: Same.

Tue Feb  4 05:07:35 1997  Gary Houston  <ghouston@actrix.gen.nz>

        * net_db.c (scm_lnaof): change scheme name from lnaof to inet-lnaof.

Mon Feb  3 06:12:37 1997  Gary Houston  <ghouston@actrix.gen.nz>

        * read.c (scm_lreadr): use scm_misc_error to improve one of the 
        "unknown # object" error messages.

        * strop.c (scm_i_index, scm_i_rindex): combine into one procedure
        (scm_i_index) and declare it static.  Add a 'direction' argument
        to indicate what way the search should go.
        (scm_i_index): throw out-of-range error instead of wrong-type-arg
        if indices are bad.
        (scm_string_index, scm_string_rindex): adjust usage of scm_i_index.
        strop.h: remove scm_i_index, scm_i_rindex prototypes.

Fri Jan 31 04:33:11 1997  Gary Houston  <ghouston@actrix.gen.nz>

        * ioext.c, ioext.h: remove obsolete _sys_ from 9 procedure names.
        
        * posix.c (scm_fork): Scheme name changed from fork to primitive-fork,
        to avoid clash with various scsh forks.

Thu Jan 30 20:14:09 1997  Mikael Djurfeldt  <mdj@syk-0606.pdc.kth.se>

        The following two changes (ramap.c, throw.c) are motivated by the
        apparent unportability of forward declarations of static arrays of
        the form `static foo bar[];'.
        
        * ramap.c (scm_array_fill_x): Moved above scm_array_fill_int.
        (ra_rpsubrs, ra_asubrs): Moved to the top of array code.

        * throw.c (scm_throw): Moved above scm_ithrow.

        * options.h: Removed the extern declarations of scm_yes_sym and
        scm_no_sym since these are static.

Fri Jan 24 06:16:32 1997  Gary Houston  <ghouston@actrix.gen.nz>

        * ports.c: add SCM_PROC declarations for pt-size and pt-member.

        * Makefile.am: remove AWK=@AWK@.
        Add a rule for generating errnos.list.
        (CLEANFILES): put errnos.list here instead of in DISTCLEANFILES.

        * configure.in: add AC_SUBST(AWK) and AC_SUBST(ERRNO_EXTRACT).
        don't extract errnos, just set a variable (avoids the
        need to recompile error.c just because configure is run.)
        
        * unif.h: update prototypes.
        * unif.c (scm_uniform_array_read,write): change the offset and
        length arguments to start and end, for consistency.

        * __scm.h: uncomment SCM_ARG6 and SCM_ARG7, I needed SCM_ARG6.

        * ioext.h: update prototypes.
        * ioext.c (scm_read_delimited_x): replaces scm_read_line and
        scm_read_line_x, it's a more general procedure using an
        interface from scsh.  read-line and read-line! are now defined
        in boot-9.scm.
        Note that the new read-line trims the terminator
        by default, previously it was appended to the returned string.  An
        optional argument specifies how to process the terminator (scsh
        compatible).  For the old behaviour: (read-line port 'concat).
        scm_read_line, scm_read_line_x: deleted.  (read-line port 'split)
        returns a pair, but is converted to multiple values if the scsh
        module is loaded.

        socket.h: update prototypes.
        * socket.c (scm_recvfrom): for consistency with other procedures,
        take start and end as separate optional arguments.
        (scm_recv, scm_recvfrom): don't allow the second argument
        to be a size, only a buffer.  Change the scheme names to
        recv! and recvfrom!.  Don't return the buffer.

        * ioext.h, posix.h: move prototypes too.
        * ioext.c, posix.c (scm_read_line, scm_read_line_x, scm_write_line:
        moved back from posix.c to ioext.c.  Also move #includes of "genio.h"
        "read.h" and "unif.h".
        * ioext.c: include "chars.h"

Mon Jan 20 19:54:49 1997  Marius Vollmer  <mvo@zagadka.ping.de>

        * dynl.c: The dynamic linking and module registration functions
        are now defined even when dynamic linking is not available for the
        host system.  Some of their functionality can be done without
        dynamic linking; when it's really needed, they throw errors.

Thu Jan 16 16:39:29 1997  Marius Vollmer  <mvo@zagadka.ping.de>

        * configure.in: Only define DYNAMIC_LINKING when one of the system
        dependent functions is detected.
        * dynl.c (scm_dynamic_func): New function to get the address of a
        function in a dynamic object.
        (scm_dynamic_call, scm_dynamic_args_call): Accept the values
        produced by scm_dynamic_func as the thing to call.

Sun Jan 12 21:09:42 1997  Marius Vollmer  <mvo@zagadka.ping.de>

        * dynl.c, dynl-dl.c, dynl-dld.c, dynl-shl.c: Restructured.
        (scm_register_module_xxx, scm_registered_modules,
        scm_clear_registered_modules): New functions.

Sat Jan 11 21:37:15 1997  Marius Vollmer  <mvo@zagadka.ping.de>

        * symbols.c (scm_sysintern): Renamed to
        scm_sysintern_no_module_lookup.
        (scm_sysintern): New function to take the place of the old
        scm_sysintern. It uses the current toplevel lookup closure to give
        the symbol its value.  This is a temporary hack to put packages
        like gtcltk into their own module.
        (scm_can_use_top_level_lookup_closure_var): New variable to tell
        us whether `scm_top_level_lookup_closure_var' has been initialized
        and is usable.
        * eval.c (scm_init_eval): Set it.

Sat Jan 18 00:03:31 1997  Gary Houston  <ghouston@actrix.gen.nz>

        * fports.c (scm_open_file): pass errno to scm_syserror_msg.
        * filesys.h: update prototypes.  Remove macros: SCM_FD_P, SCM_FD_FLAGS,
        SCM_FD.
        * filesys.c (scm_sys_stat, scm_sys_lstat): pass errno to
        scm_syserror_msg.
        (scm_sys_read_fd, scm_sys_write_fd, scm_sys_close, scm_sys_lseek,
        scm_sys_dup): deleted: FD capability will be added to other
        procedures.
        Remove support for the FD object type: scm_tc16_fd, scm_fd_print,
        scm_fd_free, fd_smob, scm_intern_fd.
        (scm_open): renamed from scm_sys_open.  Return a port instead of
        an FD object.  Make the mode argument optional.
        (scm_sys_create): deleted, it's just a special case of open.
        (scm_init_filesys): move interning of constants O_CREAT etc.,
        here (were previously using SCM_CONST_LONG macro).
        Add missing constants: O_RDONLY, O_WRONLY, O_RDWR, O_CREAT.
        don't newsmob fd.
        (numerous _sys_ procedures): remove gratuitous _sys_ from names.
        include "fports.h" and <stdio.h>
        (scm_stat, scm_select): don't support FD objects.

        * error.h: adjust scm_syserror_msg prototype.
        * error.c (scm_syserror_msg): take an extra argument for errno.
        Using the global value didn't always work, since it could be
        reset by procedure calls in the message or args arguments.

        * fports.c (scm_setbuf0): call setbuf even if FIONREAD is not defined.
        I don't understand why the check was there (and what about the
        ultrix check?)
        
        * strop.c (scm_string_copy): allow shared substrings to be copied.

        * unif.h: corresponding change to prototypes.
        * unif.c (scm_uniform_array_read_x, scm_uniform_array_write_x):
        recognize two new optional arguments: offset and length.  Allow
        the port argument to be an integer (file descriptor, for scsh).
        Include <unistd.h> for "read" prototype.

Tue Jan 14 02:42:02 1997  Gary Houston  <ghouston@actrix.gen.nz>

        * socket.c: don't include filesys.h.

Mon Jan 13 03:47:04 1997  Gary Houston  <ghouston@actrix.gen.nz>

        * Makefile.am: add AWK=@AWK@ (?)

        * Makefile.am (EXTRA_DIST): add errnos_cnvt.awk, errnos.default,
        errnos_get.c.
        Add a rule to generate errnos.c from errnos.
        * error.c (scm_init_error): include errnos.c.
        * errnos_cnvt.awk: new file, converts the list of errno codes to
        C expressions.
        * errnos_get.c: new file.
        * errnos.default: new file, contains errnos to try if they can't
        be extracted from errno.h.
        * configure.in: if using GCC, try and extract errno codes from
        errno.h.
        Added AC_PROG_AWK.

Sat Jan 11 14:47:00 1997  Marius Vollmer  <mvo@zagadka.ping.de>

        * configure.in: Replaced AC_PROG_RANLIB with AM_PROG_LIBTOOL.
        * Makefile.am: Made libguile into a libtool library.
        * PLUGIN/guile.config: Removed "-L ../libguile" from xtra_cflags.
        Set libtool_libs to indicate that libguile is a libtool library.
        See guile/ChangeLog for details.
        * .cvsignore: ignore "*.lo", the libtool library objects.

Wed Jan  8 06:54:54 1997  Gary Houston  <ghouston@actrix.gen.nz>

        * net_db.c (scm_getserv): add missing SCM_ALLOW_INTS.
        use htons in getservbyport argument.

Tue Jan  7 18:11:24 1997  Jim Blandy  <jimb@floss.cyclic.com>

        * ports.h (SCM_PTOBNUM): Removed extraneous semicolon.
        * smob.h: (SCM_PTOBNUM): Removed entirely; this definition is a
        duplicate.

        * objprop.c (scm_object_property): No need to take the CDR of the
        value returned by scm_object_properties, since Aug 20 change.

        * configure.in: When checking for struct linger, #include
        <sys/types.h> as well as <sys/socket.h>.  I've never known
        <sys/types.h> to cause any portability problems, and Solaris's
        <sys/socket.h> needs it.
        * configure: Rebuilt.

        I think the Sun compiler has chosen a perverse way to interpret
        ANSI declarations combined with K&R definitions.  We'll
        appease it a little bit.  But when it invades France, we fight.
        * print.c (scm_iprlist): Change 'tlr' argument to an int.
        * print.h (scm_iprlist): Here too.
        * numbers.c (scm_divbigdig): Change definition to match
        declaration in numbers.h.
        * unif.c (scm_makflo): Change definition to match declaration in
        unif.h.

        * init.c (scm_boot_guile): Don't return the value of
        scm_boot_guile_1.  This function doesn't return a value;
        scm_boot_guile_1 doesn't return a value (or return at all).

        * eval.c (unmemocopy): Add a semicolon to appease the Sun
        compiler.

        * simpos.c (SYSTNAME): Add case for AIX; otherwise it won't
        compile.  I have a feeling this function is a bad idea anyway ---
        one should always test for features, not systems.

        * smob.h (SCM_SMOBNUM, SCM_PTOBNUM): Remove extraneous
        semicolons.  Only pure luck kept this from being noticed earlier.

Tue Jan  7 15:04:06 1997  Mikael Djurfeldt  <mdj@kenneth>

        * socket.c (scm_recvfrom): Added missing semicolon.

Mon Jan  6 20:39:08 1997  Gary Houston  <ghouston@actrix.gen.nz>

        * socket.c (scm_recvfrom): allow buff_or_size to be a list containing
        the buffer and start and end positions for scsh networking
        implementation.

Sun Jan  5 13:53:53 1997  Jim Blandy  <jimb@floss.cyclic.com>

        * configure.in: Revert previous change to this file; the problem
        is due to transient automake weirdness.
        * configure: Rebuilt.

        * Makefile.am (EXTRA_DIST): Distribute PLUGIN/guile.libs.in, not
        PLUGIN/guile.libs.  configure generates the latter from the former.
        * Makefile.in: Rebuilt.
        
        * configure.in: Call AM_PROG_INSTALL; the automake manual says we
        need this if we install scripts, like guile-snarf.
        * configure: Rebuilt.

Thu Jan  2 01:56:38 1997  Marius Vollmer  <mvo@zagadka.ping.de>

        * Makefile.am (EXTRA_DIST): Added DYNAMIC-LINKING

Sat Dec 28 19:14:01 1996  Gary Houston  <ghouston@actrix.gen.nz>

        * socket.c (scm_addr_vector): fix faulty scm_listify.

Sat Dec 28 13:55:58 1996  Marius Vollmer  <mvo@zagadka.ping.de>

        * read.c (scm_lreadr): Encountering EOF after skipping a SCSH
        style block comment is no longer considered an error.
        
Fri Dec 27 13:44:23 1996  Marius Vollmer  <mvo@zagadka.ping.de>

        * PLUGIN/guile.libs.in: New file.
        * PLUGIN/guile.libs: Removed from repository.
        * configure.in: Create PLUGIN/guile.libs from
        PLUGIN/guile.libs.in.  This is for including additonal libraries
        needed for dynamic linking.
        * Makefile.am (EXTRA_DIST): Distribute PLUGIN/guile.libs.in
        instead of PLUGIN/guile.libs.
        
        * Makefile.am: Added explicit dependency "dynl.o: dynl.x".
        
Sun Dec 22 23:06:14 1996  Jim Blandy  <jimb@floss.cyclic.com>

        * list.c (scm_delq_x, scm_delv_x, scm_delete_x): Delete all
        occurrences of the given element from the list, not just the
        first.  This is how the Emacs Lisp functions behave, how the
        analogous Common Lisp functions behave, and (I believe) how the
        older Maclisp functions worked.  I realize that this change may
        break code, but it seemed better to break it before the Guile
        release than after.

        * gc.c (scm_protect_object, scm_unprotect_object): New functions.
        Their prototypes were already present in gc.h, but they weren't
        implemented.
        (scm_init_storage): Initialize scm_protects.
        * root.c (scm_protects): New element of scm_sys_protects.

        * net_db.h (scm_init_net_db): Fix spelling from scm_init_netdb.

Sat Dec 21 15:38:32 1996  Jim Blandy  <jimb@floss.cyclic.com>

        * libguile.h: Added #include "libguile/net_db.h".

        * libguile.h: Don't #include "libguile/libpath.h", contrary to Oct
        30 change.  That file is only meant for communication between the
        configuration process and load.c.  If code linked against libguile
        wants to get at the paths mentioned in libpath.h, it can call
        functions declared in load.h.

Sat Dec 21 14:50:42 1996  Mikael Djurfeldt  <mdj@mdj.nada.kth.se>

        * libguile.h: Removed #include "libguile/fdsocket.h"

        * net_db.c: Added #include <sys/socket.h>.

Sat Dec 21 00:33:03 1996  Gary Houston  <ghouston@actrix.gen.nz>

        * filesys.c (scm_input_waiting_p): use select in preference to
        FIONREAD, since the latter doesn't detect EOF.
        Throw error if neither select nor FIONREAD available.

        * socket.c (scm_connect): take a port, not a fd object.
        (scm_fill_sockaddr): throw an error if fam is not recognised.
        (scm_bind): use scm_fill_sockaddr.
        (scm_listen): take a port, not a fd object.
        (scm_accept): take and return a port.  return #f in the car if
        address can't be got
        (scm_sock_fd_to_port): new procedure.
        (scm_socket): use scm_sock_fd_to_port.
        (scm_addr_vector): throw error if unrecognised address type.
        take an extra argument with the calling procedure name.
        (scm_getsockname): take a port.  return #f if address can't be got.
        (scm_getpeername): take a port.  return #f if address can't be got.
        (scm_recvfrom): take a port.  return #f for address component if can't
        be got.
        (scm_sendto, scm_socketpair, scm_getsockopt scm_shutdown, 
        scm_setsockopt, scm_recv, scm_send): take a port not a fd object.

Fri Dec 20 23:06:53 1996  Jim Blandy  <jimb@floss.cyclic.com>

        * throw.c (scm_internal_catch): Make body funcs and handler funcs
        use separate data pointers, to allow them to be designed
        independently and reused.
        (scm_body_thunk, scm_handle_by_proc, scm_handle_by_message):
        Renamed from catch_body, catch_handler, and uncaught_throw; made
        generically useful.
        (struct scm_catch_body_data): Renamed from catch_body_data; moved
        to throw.h.
        (scm_catch): Use the above.
        (scm_throw): Don't bother printing a message for an uncaught
        throw; we establish a default handler in init.
        * throw.h (scm_internal_catch): Prototype updated.
        (scm_body_thunk, scm_handle_by_proc, scm_handle_by_message): New
        decls.
        (struct scm_body_thunk_data): New structure, used as data
        argument to scm_body_thunk.
        * init.c (struct main_func_closure): New structure, packaging up
        the data to pass to the user's main function.
        (scm_boot_guile): Create one.  Pass it to scm_boot_guile_1.
        (scm_boot_guile_1): Pass it through to invoke_main_func.  Use
        scm_internal_catch to establish a catch-all handler, using
        scm_handle_by_message.  This replaces the special-case code in
        scm_throw.
        (invoke_main_func): Body function for scm_internal_catch; invoke
        the user's main function, using the main_func_closure pointer to
        decide what to pass it.
        * root.c (struct cwdr_body_data): Remove handler_proc member.
        (cwdr): Use scm_handle_by_proc instead of cwdr_handler.
        (cwdr_handler): Removed.

Thu Dec 19 00:00:26 1996  Gary Houston  <ghouston@actrix.gen.nz>

        * socket.h (SCM_P): update bind prototype.
        * socket.c (scm_init_socket): intern PF_UNSPEC, PF_UNIX, PF_INET.
        include "feature.h".
        (scm_socket): return a port, not a file descriptor object.
        include "fports.h" and <unistd.h>
        (scm_bind): take a port, not a file descriptor object.
        take an extra argument for address args.

        * net_db.c (scm_init_net_db): intern INADDR_ANY, INADDR_BROADCAST,
        INADDR_NONE, INADDR_LOOPBACK.

Tue Dec 17 22:58:26 1996  Gary Houston  <ghouston@actrix.gen.nz>

        * init.c: include net_db.h and not fdsocket.h.
        (scm_boot_guile_1): call scm_init_net_db and not scm_init_fdsocket.

        * Makefile.am: corresponding changes.
        * socket.h: renamed from fdsocket.h, fix names.
        * net_db.h: renamed from socket.h, fix names.
        * socket.c: renamed from fdsocket.c.
        remove _sys from procedure names.
        (scm_init_socket): rename from scm_init_fdsocket.  include socket.x.
        add "socket" to features list.
        * net_db.c: renamed from socket.c.
        remove _sys from procedure names.
        (scm_init_net_db): rename from scm_init_socket.  include net_db.x.
        add "net-db" to features list.
        include "net_db.h".  don't include <sys/socket.h> or
        <sys/un.h>.

Thu Dec 19 14:03:24 1996  Mikael Djurfeldt  <mdj@mdj.nada.kth.se>

        * tags.h (scm_tags): Removed comma at end of last enumerator.

Thu Dec 19 02:54:59 1996  Jim Blandy  <jimb@floss.cyclic.com>

        Don't use GCC extensions to allocate space for debugging frames.
        (Here he goes again!  Why do we put up with this?!)
        * debug.h (scm_debug_frame): Make the 'vect' member a pointer to
        an scm_debug_info structure, not an in-line array of them.  Add
        'info' member, to say how many vect elements we've used, for eval
        frames.
        * eval.c (SCM_CEVAL): Use alloca to allocate space for vect.  Use
        a new variable debug_info_end to mark the end of vect, instead of
        the address of the 'info' pointer itself.
        [DEVAL] (ENTER_APPLY, SCM_CEVAL, SCM_APPLY): Remove casts of
        &debug to scm_debug_frame *; debug is a real scm_debug_frame now.
        (SCM_APPLY): Explicitly allocate space for debug.vect. 
        * debug.c (scm_m_start_stack): Same, for vframe.vect.
        * stacks.c: Adjusted for new debug frame structure.
        (RELOC_INFO, RELOC_FRAME): New macros.
        (stack_depth, read_frames): Use them, and new scm_debug_frame
        element 'info', instead of magically knowing that eval frames have
        an info pointer sitting after vect.
        (scm_make_stack, scm_stack_id, scm_last_stack_frame): Use
        RELOC_FRAME.
        (scm_init_stacks): Formatting tweaks.

Wed Dec 18 14:57:57 1996  Jim Blandy  <jimb@floss.cyclic.com>

        Give GCC more control flow information, so it can be sure that
        variables aren't used uninitialized.
        * error.h (scm_error, scm_syserror, scm_syserror_msg,
        scm_sysmissing, scm_num_overflow, scm_out_of_range,
        scm_wrong_num_args, scm_wrong_type_arg, scm_memory_error,
        scm_misc_error): Tell GCC that these functions never return.
        * struct.c (scm_struct_ref, scm_struct_set_x): If we can't figure
        out the field type, call abort if SCM_ASSERT returns, to placate
        the optimizer.
        * stacks.c (scm_make_stack, scm_last_stack_frame): abort if
        scm_wta ever returns.  We can't handle this case anyway, and this
        gives the optimizer more information.
        * unif.c (scm_uniform_vector_ref, scm_array_set_x): Abort if
        scm_wta ever returns.

        In some cases, the code is fine, but GCC isn't smart enough to
        figure that out; this usually happens when one variable is only
        initialized and used when a particular condition holds true, and
        we know that condition will never change within a given invocation
        of the function.  In this case, we simply initialize the variables
        to placate the compiler, hopefully to a value which will cause a
        crash if it is ever actually used.
        * print.c (scm_iprin1): Initialize mw_pos.
        * read.c (scm_lreadrecparen): Initialize tl2, ans2.
        * throw.c (scm_ithrow): Initialize dynpair.
        * unif.c (scm_uniform_vector_ref): Initialize cra.
        * struct.c (init_struct): Initialize prot.
        * mbstrings.c (scm_print_mb_symbol): Initialize mw_pos and inc.

        * strports.c (scm_eval_0str): Don't return uninitialized garbage
        if EXPR contains no expressions.

Wed Dec 18 11:43:22 1996  Jim Blandy  <jimb@totoro.cyclic.com>

        * eval.c, debug.h: Revert changes of Dec 16 and Nov 21.  They
        cause an infinite loop (???).  So much for the algebraic
        equivalency of variable-sized arrays and alloca...

Tue Dec 17 20:29:03 1996  Marius Vollmer  <mvo@zagadka.ping.de>

        * backtrace.c (scm_display_error): Bugfix: scm_procedure_p returns
        a SCM boolean, not a C boolean.

Sat Dec 14 23:21:45 1996  Marius Vollmer  <mvo@zagadka.ping.de>

        * gc.c (SCM_MTRIGGER_HYSTERESIS): New memory management parameter.
        (scm_must_malloc, scm_must_realloc): Added a hysteresis to the
        rules for raising scm_mtrigger. Previously, unfortunate but not
        unlikely circumstances could result in almost constant invokation
        of the gc. Now, this situations should be less likely, but they
        are not prevented completely.

Tue Dec 17 16:19:07 1996  Jim Blandy  <jimb@totoro.cyclic.com>

        * numbers.c (scm_fuck): Procedure removed; looks like old test
        code.
        * numbers.h: Prototype removed.
        
Mon Dec 16 18:20:32 1996  Jim Blandy  <jimb@totoro.cyclic.com>

        * debug.h (scm_debug_frame): Change `vect' member from an in-line
        array to a pointer, to match my Nov 21 change in eval.c.

Fri Dec 13 16:12:14 1996  Mikael Djurfeldt  <mdj@mdj.nada.kth.se>

        * libguile.h: Added #include "libguile/backtrace.h", #include
        "libguile/stacks.h".
        
        * strings.c (scm_string scm_make_string scm_string_ref
        scm_string_set_x scm_string_equal_p scm_string_append):
        Bugfix according to scm patch from Aubrey Jaffer:
        Corrected long-standing
        (not (eqv? (integer->char 128)
                   (string-ref (make-string 1 (integer->char 128)) 0)))
        bug found by John Kozak <jk@noontide.demon.co.uk>.

        * strports.c, strports.h: Make scm_eval_0str return the value of
        the last expression evaluated (previously, it returned void).

        * strports.c, strports.h: New function: scm_read_0str.  Does what
        it sounds like.

Tue Dec 10 23:38:43 1996  Gary Houston  <ghouston@actrix.gen.nz>

        * simpos.c (scm_getenv): return #f if string can't be found in the
        environment instead of throwing an exception, for compatibility
        with numerous other systems.

Mon Dec  9 23:23:35 1996  Tom Tromey  <tromey@cygnus.com>

        * Makefile.am (.c.x): Use guile-snarf.
        * configure.in (AC_OUTPUT): Generate guile-snarf; make it
        executable.
        * guile-snarf.in: New file, resurrected from old guile-snarf.sh.

Mon Dec  9 18:36:50 1996  Jim Blandy  <jimb@duality.gnu.ai.mit.edu>

        * backtrace.c (scm_display_error_message): Made non-static, and
        renamed from display_error_message.
        * backtrace.h (scm_display_error_message): Added extern decl.
        * throw.c (uncaught_throw): Use it to display the error message.

Mon Dec  9 10:10:38 1996  Tom Tromey  <tromey@cygnus.com>

        * inet_aton.c: Use #if 0, not #ifdef 0.

Mon Dec  9 06:36:48 1996  Gary Houston  <ghouston@actrix.gen.nz>

        * ioext.c (scm_sys_ftell): use scm_long2num instead of SCM_MAKINUM
        to convert the returned value.
        (scm_sys_fseek): use scm_num2long instead of SCM_INUM to convert
        the offset argument.

Sun Dec  8 21:06:38 1996  Jim Blandy  <jimb@duality.gnu.ai.mit.edu>

        Add new interface to catch/throw, usable from C as well as
        Scheme.
        * throw.h (scm_catch_body_t, scm_catch_handler_t): New types.
        (scm_internal_catch): New function, replaces...
        (scm_catch_apply): Deleted.
        * throw.c (scm_catch_apply): Deleted; replaced with a more general
        mechanism which is a bit more code, but can be used nicely from C
        and implement the Scheme semantics as well.
        (scm_internal_catch): This is the replacement; it's named after
        the analogous function in Emacs.
        (scm_catch): Reimplemented in terms of the above.
        (struct catch_body_data, catch_body, catch_handler): New
        functions, used by scm_catch.
        * root.c (cwdr): Reimplemented in terms of scm_internal_catch.
        (struct cwdr_body_data, cwdr_body, cwdr_handler): New functions;
        support for new cwdr.

        * Makefile.am (libpath.h): Re-incorporate Mikael's changes of Wed
        Oct 30.

Sun Dec  8 17:55:34 1996  Marius Vollmer  <mvo@zagadka.ping.de>

        * acconfig.h: Added DYNAMIC_LINKING symbol.
        * configure.in: Add option and checks for dynamic linking.
        * dynl.c, dynl-dl.c, dynl-dld.c, dynl-shl.c, dynl-vms.c,
        dynl.h: New files for dynamic linking support.
        * Makefile.am (libguile_a_SOURCES):
        Added "dynl.c".
        (modinclude_HEADERS): Added "dynl.h".
        (EXTRA_DIST): Added "dynl-dl.c", "dynl-dld.c", "dynl-shl.c" and
        "dynl-vms.c".
        * init.c (scm_boot_guile_1): Call
        scm_init_dynamic_linking to initialize dynamic linking support.

Thu Dec  5 22:47:53 1996  Marius Vollmer  <mvo@zagadka.ping.de>

        * init.c (scm_boot_guile_1): Moved `live' variable to the toplevel
        (as we Schemers say). It needs to be global, so that I can tweak
        it for the proper operation of unexec.
        (scm_boot_guile_1_live): New variable, see above.

Sun Dec  1 00:00:49 1996  Tom Tromey  <tromey@cygnus.com>

        * guile-snarf.sh: Removed.
        * PLUGIN/guile.libs: Added dependency for -lm.
        * acinclude.m4: Renamed from aclocal.m4.
        * PLUGIN/greet: Removed.
        * Makefile.am, aclocal.m4: New files.
        * configure.in: Updated for Automake.

Thu Nov 28 00:23:55 1996  Marius Vollmer  <mvo@zagadka.ping.de>

        * eval.c (scm_definedp): Use top_level_lookup_closure_var
        and not top_level_lookup_thunk_var.

Wed Nov 27 22:04:19 1996  Jim Blandy  <jimb@baalperazim.frob.com>

        * Makefile.in (ancillary): List ChangeLog-scm, not ChangeLog.scm.

Wed Nov 27 14:14:56 1996  Marius Vollmer  <mvo@zagadka.ping.de>

        * eval.c (scm_definedp): Incompatibly changed to be a builtin
        Scheme function, instead of syntax. Single argument is now a
        symbol.

Thu Nov 21 20:26:36 1996  Jim Blandy  <jimb@totoro.cyclic.com>

        * ramap.c (scm_ra_sum, scm_ra_difference, scm_ra_product,
        scm_ra_divide): Properly terminate statements passed as arguments
        to IVDEP macros.  (Thanks to Bernard Urban.)

        * eval.c (SCM_CEVAL): Use alloca, not GCC's extensions for arrays
        with non-constant sizes.  (Thanks to Bernard Urban.)

Thu Nov 21 11:17:42 1996  Jim Blandy  <jimb@floss.cyclic.com>

        It's an "eval closure", not an "eval thunk."  A thunk is a
        function of no arguments.
        * root.h (struct scm_root_state): Renamed
        top_level_lookup_closure_var from top_level_lookup_thunk_var.
        (scm_top_level_lookup_closure_var): Renamed from
        scm_top_level_lookup_thunk_var.
        * root.c (mark_root): Uses changed.
        * gdbint.c (gdb_eval, gdb_binding): Uses changed.
        * init.c (scm_start_stack): Uses changed.
        * eval.c (scm_eval, scm_eval_x, scm_init_eval): Rename uses.
        Change scheme-visible name to *top-level-lookup-closure* from
        *top-level-lookup-thunk*.

Tue Nov 19 22:43:31 1996  Jim Blandy  <jimb@totoro.cyclic.com>

        * gc.c (scm_igc, scm_gc_mark): Round up the size of the stack we
        pass to scm_mark_locations.  (Thanks to Aubrey Jaffer.)

Sun Nov 10 13:35:05 1996  Jim Blandy  <jimb@floss.cyclic.com>

        * gc.c (struct scm_heap_seg_data): Doc fixes.

        * gc.c (scm_gc_sweep): Empty all segments' freelists before
        sweeping.  Then, prepend each segment's free cells to its
        freelist, rather than wiping out the old value.  (Thanks to Marius
        Vollmer.)

        * gc.c (which_seg, scm_map_free_list, scm_newcell_count,
        scm_check_freelist, scm_debug_newcell): New functions and
        variables, for debugging freelist problems.
        * pairs.h (SCM_NEWCELL): New debugging version added.
        * gc.h (scm_debug_newcell): Added extern declaration, used by
        debugging version of SCM_NEWCELL.

Sat Nov  9 19:02:46 1996  Jim Blandy  <jimb@floss.cyclic.com>

        On some systems <libc.h> conflicts with <unistd.h>, and should not
        be #included at all.
        * aclocal.m4 (GUILE_HEADER_LIBC_WITH_UNISTD): New autoconf macro.
        * acconfig.h (LIBC_H_WITH_UNISTD_H): New CPP symbol.
        * configure.in: Call it.
        * posix.c, filesys.c: Use its results to decide whether or not to
        #include <libc.h>.
        * configure, scmconfig.h.in: Rebuilt with autoconf and
        autoheader.

Wed Nov  6 16:19:50 1996  Jim Blandy  <jimb@totoro.cyclic.com>

        * fports.c (scm_stdio_to_port, scm_open_file): Set the port's
        pointer to the stdio stream before calling scm_setbuf0, so the
        latter will be able to retrieve it.  I'm surprised this didn't
        segfault earlier.  (Thanks to Christopher Lee.)

Wed Nov  6 16:01:20 1996  Mikael Djurfeldt  <mdj@mdj.nada.kth.se>

        * throw.c (scm_lazy_catch, scm_ithrow): Completed implementation
        of `lazy-catch'.

Sat Nov  2 21:01:48 1996  Mikael Djurfeldt  <mdj@mdj.nada.kth.se>

        * stacks.c, stacks.h (scm_make_stack): Now takes arbitrary
        number of stack narrowing specifier pairs.  The first specifier in
        a pair controls inner border, the second the outer border.  A
        number means cut that number of frames, a procedure object means
        cut until that object is found in operator position in a frame.

        * root.c (cwdr): Bugfix.

        * read.c: Recording of positions disabled by default.

        * procs.c (scm_closure_p): New function.

        * posix.c (scm_tmpnam): New function.

        * load.c: Added #include "throw.h".
        (scm_sys_search_load_path): Bugfix: Don't add an extra '/' if path
        ends with '/'.
        
        * load.c, load.h (scm_read_and_eval_x): New function.

        * eval.c: Renamed debug option "deval" to "debug".
        
        (scm_eval_x): `eval!' is no longer accessible from the scheme
        level.  Motivation: We can't allow operations which introduce
        glocs into the scheme level.  Guile's type system can't handle
        these as data.  Use `eval' or `read-and-eval!' as replacement.
        
        * debug.c (scm_m_start_stack): Bugfix: Use SCM_ECONSP instead of
        SCM_CONSP since this is a macro!; Set vframe.prev to
        scm_last_debug_frame instead of 0.  In this way we can look
        "above" the virtual start stack frame if we wish.
        (scm_debug_hang): New function: Useful for debugging Guile in
        certain tricky situations.  Will probably be removed later...

        * debug.h: Changed semantics of debug option "backtrace".  This
        option now only indicates whether we want automatic backtrace at
        an error.
        
Wed Oct 30 00:31:55 1996  Mikael Djurfeldt  <mdj@mdj.nada.kth.se>

        * ports.c: #include "filesys.h"
        (scm_char_ready_p): input_waiting renamed and moved to filesys.c.

        * filesys.c, filesys.h (scm_input_waiting_p): Moved from ports.c.
        Motivation: This is system specific code which is related to file
        I/O.  It also may use select.  Added code by Gary Houston to
        detect presence of character in stdio buffers.

        * libguile.h: #include "libguile/libpath.h"

        * Makefile.in (libpath.h): Renamed definition of: LIBRARY_PATH -->
        SCM_LIBRARY_DIR; Added definitions of: SCM_PKGDATA_DIR,
        SCM_SITE_DIR; Install libpath.h among the other include files.

        * load.c, load.h (scm_sys_package_data_dir): New function.

Mon Oct 28 11:43:41 1996  Mikael Djurfeldt  <mdj@mdj.nada.kth.se>

        * stacks.h: Bugfix: Don't use tail-array length field as stack
        length field!  This screwed GC.

Tue Oct 22 01:01:00 1996  Mikael Djurfeldt  <mdj@mdj.nada.kth.se>

        * _scm.h: Added #ifndef around definition of macros min and max.

        * __scm.h: Added hooks for threads to plugin to in ints protection
        macros: SCM_THREAD_DEFER, SCM_THREAD_ALLOW, SCM_THREAD_REDEFER,
        SCM_THREAD_ALLOW_1, SCM_THREAD_ALLOW_2.  Motivation: We don't want
        the main code in these macros duplicated and spread over multiple
        files. Renamed SCM_THREADS_SWITCHING_CODE ->
        SCM_THREAD_SWITCHING_CODE.

Tue Oct 29 14:55:40 1996  Marius Vollmer  <mvo@zagadka.ping.de>

        * snarf.h: New file.
        * guile-snarf.sh: New file.
        * Makefile.in (inner_h_files): Added snarf.h 
        (ancillary, install, uninstall, distclean): Added actions for
        guile-snarf.
        (.c.x): Use guile-snarf.
        (guile-snarf): New rule, to produce guile-snarf from guile-snarf.sh.
        (gen_c_files): Note that these depend on guile-snarf.
        * _scm.h: Removed the snarfing macros (SCM_PROC, etc). They are
        now in "snarf.h".  Added #include "snarf.h" to get them.
        * libguile.h: Added #include "snarf.h".
        (Patches applied and tweaked by Jim Blandy.)
        
Tue Oct 29 13:21:13 1996  Jim Blandy  <jimb@totoro.cyclic.com>

        * socket.c: Use K&R style declaration for 'close'; the GNU coding
        standards suggest against providing prototypes for system
        functions.  Thanks to Greg Troxel. 

Mon Oct 28 16:48:32 1996  Jim Blandy  <jimb@floss.cyclic.com>

        * strports.c (scm_eval_0str): New function.
        #include "read.h", to get prototype for scm_read.
        * Makefile.in (strports.o): Update dependencies.
        * strports.h: New prototype.

        * numbers.c (scm_integer_p): Renamed from scm_int_p; change its
        scheme name from "int?" to "integer?".  It seems to do the job.
        * numbers.h: Rename prototype too.
        * scmhob.h (intp): Change definition to refer to scm_integer_p.  I
        hope this is right.

        * numbers.c (scm_less_p, scm_gr_p, scm_leq_p, scm_geq_p,
        scm_num_eq_p): Rename these according to R4RS conventions: call
        them <, <=, =, >, and >=, not <?, <=?, =?, >?, and >=?.  En route
        to making libguile R4RS compliant without ice-9...

        * load.c (scm_sys_search_load_path): Search for files under all
        extensions listed in the %load-extensions variable.  If FILENAME
        is absolute, return it unchanged, without searching the load path.
        (scm_loc_load_extensions): New variable, pointing to
        %load-extensions' value cell.
        (scm_init_load): Initialize it, and the value it points to.
        (scm_primitive_load_path): Improve error reporting.

        * load.c (scm_loc_load_hook): New variable, pointing to value cell
        of new Scheme variable %load-hook.
        (scm_primitive_load): Apply %load-hook to filename.

Mon Oct 28 06:28:28 1996  Gary Houston  <ghouston@actrix.gen.nz>

        * configure.in: add tests for figuring out whether buffered data
        is available in a FILE structure, which is needed by char-ready.
        
        * acconfig.h: define FILE_CNT_FIELD, FILE_CNT_GPTR and 
        FILE_CNT_READPTR.

        * simpos.c (scm_getenv): renamed from scm_sys_getenv.  Throw
        exceptions using misc_error instead of syserror.  It seems a bit
        odd to throw an exception if a string can't be found in the
        environment, but it's consistent with open-file, stat etc.
        (simpos.h): remove sys_ from getenv.

        * posix.c (scm_putenv): renamed from scm_sys_putenv.  If an error
        occurs, throw an error instead of returning errno.  Return value
        is now unspecified.
        (numerous in posix.c and posix.h): removed superfluous sys_ from names.

Sun Oct 27 01:22:04 1996  Gary Houston  <ghouston@actrix.gen.nz>

        * filesys.c (scm_stat2scm): derive file type and permissions from
        the stat mode and append them to the returned vector.
        There isn't much overhead in doing this and it avoids the need to
        work with S_IRUSR et al. in Scheme.
        Define symbols scm_sym_regular etc.
        (scm_init_filesys): don't intern S_IRUSR etc.
        
        * load.c: change s_try_load and s_try_load_path to s_primitive_load
        and s_primitive_load_path.

        * eval.c, load.c, error.c (scm_wta): use scm_misc_error.

        * error.h: don't declare error symbols.  prototype for scm_misc_error.

        * stackchk.c (scm_stack_overflow_key): defined here instead of in
        error.c.

        * error.c: use SCM_SYMBOL to set up error keys.
        scm_misc_error: new procedure.

Fri Oct 25 01:56:30 1996  Jim Blandy  <jimb@floss.cyclic.com>

        * read.c (scm_lreadr): Recognize SCSH-style block comments; text
        between `#!' and `!#' is ignored.
        (skip_scsh_block_comment): New function.

        * feature.c (scm_set_program_arguments): New argument, FIRST.
        * feature.h: Update prototype.
        * init.c (scm_boot_guile_1): Pass new argument to
        scm_set_program_arguments.

Tue Oct 22 20:54:42 1996  Jim Blandy  <jimb@floss.cyclic.com>

        * init.c (scm_start_stack): Don't initialize scm_progargs here.
        (scm_boot_guile): Call scm_set_program_arguments here, later than
        the old initialization.

        * init.c: (scm_boot_guile, scm_boot_guile_1):  New, simplified
        initialization procedure.
        - Delete in, out, err arguments; there are other perfectly good
        ways to override these when desired.
        - Delete result argument; this function shouldn't ever return.
        - Rename init_func argument to main_func, for less confusion.
        - Delete boot_cmd argument; main_func is more general.
        -Add 'closure' argument, to help people pass data to main_func
        without resorting to global variables.
        - Abort if reentered; don't bother returning an error code.
        - Call scm_init_standard_ports to set up the default/current
        standard ports; no need to pass them to scm_start_stack.
        - Remove code to evaluate the boot_cmd, and start the repl; let
        the user do something like that in main_func if they want.
        - Remove code to package up a return value; main_func can do any
        of that as needed.
        - Call exit (0), instead of returning.
        (scm_start_stack): Don't initialize the I/O ports here; that's
        weird.  Delete in, out, err arguments.  Move guts to
        scm_init_standard_ports, scm_stdio_to_port.
        (scm_init_standard_ports): New function, to set up current and
        default standard ports.
        (scm_start_stack, scm_restart_stack): Make these static.
        * init.h (scm_boot_guile): Adjust declaration.
        (scm_start_stack, scm_restart_stack): Remove externally
        visible declarations for these.
        (enum scm_boot_status): Removed; now scm_boot_guile never returns.
        
        * fports.c (scm_stdio_to_port): New function.  Its guts used to be
        written out several times in scm_start_stack.
        * fports.h: New declaration for the above.
        
        * feature.c (scm_set_program_arguments): New function.
        * feature.h: New declaration for the above.

        * ports.c: Formatting tweak.

Sun Oct 20 03:29:32 1996  Mikael Djurfeldt  <mdj@kenneth>

        * pairs.h, eval.c, eval.h, feature.c, gc.c, list.c, load.c,
        ramap.c, symbols.c: Added new selectors SCM_CARLOC and SCM_CDRLOC
        for obtaining the address of a car or cdr field.  Motivation:
        &SCM_CXR make assumptions about the internal structure of the
        SCM_CXR selectors.

        * eval.h, eval.c: Added new selector SCM_GLOC_VAL_LOC.
        Motivation: see SCM_CXRLOC.

        * pairs.h, eval.c, gc.c, init.c, ioext.c, ports.c, ports.h,
        srcprop.h, tags.h, throw.c, unif.c: Added new selectors
        SCM_SETAND_CAR, SCM_SETAND_CDR, SCM_SETOR_CAR and SCM_SETOR_CDR.
        Motivation: Safer use.  Some other macros are defined in terms of
        these operations.  If these are defined using the SCM_SETCXR
        (<e1>, SCM_CXR (<e1>) <op> <e2>) pattern a complex <e1> will lead
        to inefficiency and an <e1> with side-effects could potentially
        break.  Also, these particular operations are heavily utilized in
        the garbage collector.  In unoptimized code there will be a
        measurable speedup.

        * alist.c, arbiters.c, continuations.c, debug.c, debug.h, eval.c,
        eval.h, feature.c, filesys.c, fports.c, gc.c, gsubr.c, init.c,
        ioext.c, kw.c, list.c, load.c, mallocs.c, numbers.c, numbers.h,
        pairs.c, pairs.h, ports.c, ports.h, posix.c, procprop.c, procs.c,
        procs.h, ramap.c, read.c, root.c, srcprop.c, srcprop.h,
        strports.c, symbols.c, tags.h, throw.c, unif.c, variable.c,
        vports.c: Cleaned up use of pairs: Don't make any special
        assumptions about the internal structure of selectors and
        mutators: SCM_CXR (<e1>) = <e2> --> SCM_SETCXR (<e1>, <e2>),
        SCM_CXR (<e1>) &= <e2> --> SCM_SETAND_CXR (<e1>, <e2>) etc.
        (Among other things, this change makes it easier to build Guile
        with certain compilers which have problems with casted lvalues.)
        
Fri Oct 18 01:11:56 1996  Mikael Djurfeldt  <mdj@mdj.nada.kth.se>

        * stacks.c: Improve selection of relevant stack frames when making
        a stack object.  Introduce one level of indirection in the stack
        object to make it possible to "narrow" to a certain region of the
        stack.  This facilitates making use of more clever algorithms (not
        implemented) for selecting relevant frames and gives a cleaner
        design since selection of frames can be done independently of
        extraction of frames from the real stack.
        (scm_stack_id): Also take #t as argument which means look at
        current stack.

        * stacks.h: In struct scm_stack: Turn field frames into a pointer.
        Turn n_tail into an integer directly representing current number
        of frames in stack.  Add field tail.

        * ports.c (scm_port_line_x, scm_port_column_x): New mutators.

        * debug.c (scm_make_memoized): Made it available at scheme level.
        (scm_unmemoize, scm_memoized_environment): Bugfix: Check for
        SCM_NIMP before applying heavier predicates in argument checking.
        (scm_local_eval): Also take memoized object as argument.
        
        * backtrace.c (scm_display_error): Just a safety measure: Stacks
        aren't created with zero length, but should such a strange
        creature suddenly turn up...

Wed Oct 16 11:08:41 1996  Marius Vollmer  <mvo@zagadka.ping.de>

        * hashtab.h (scm_hashx_remove_x): Renamed `delete' parameter to
        `del', for the sake of C++ compilers.  (Patch applied by JimB.)

Tue Oct 15 17:06:13 1996  Jim Blandy  <jimb@floss.cyclic.com>

        * variable.c (scm_make_variable): Make the name hint optional, as
        documented.
        (anonymous_variable_sym): Renamed from variable_sym.  All uses
        changed.

        * load.c (scm_primitive_load, scm_primitive_load_path): Renamed
        from scm_sys_try_load and scm_sys_try_load_path.  The Scheme name
        of scm_primitive_load_path was also changed to
        "primitive-load-path", from "%try-load-path".  Callers changed.
        We'd like to respect the convention that a function named
        "try-mumble" should behave just like the function called "mumble",
        but return #f instead of signalling some error.
        * load.h: Rename prototypes.

Tue Oct 15 05:34:10 1996  Mikael Djurfeldt  <mdj@woody.nada.kth.se>

        * print.c (make_print_state, grow_print_state), print.h: Modified
        the print state representation: Don't use a tail array for
        recording of circular references.  Resizing of the print state
        structure invalidates the print state pointer.  To avoid passing
        around an indirect print state reference to all printing
        functions, we instead let the print state reference a resizable
        vector.

Mon Oct 14 19:25:00 1996  Jim Blandy  <jimb@totoro.cyclic.com>

        * alist.c (scm_sloppy_assq, scm_sloppy_assv, scm_sloppy_assoc):
        Don't crash when passed an improper list terminated by a
        non-immediate value.

Mon Oct 14 19:08:33 1996  Jim Blandy  <jimb@floss.cyclic.com>

        Allocate data for structures on an eight-byte boundary, as
        required by the tagging system.
        * struct.c (alloc_struct): New function.
        (scm_make_struct, scm_make_vtable_vtable): Call it.
        * struct.h (scm_struct_n_extra_words): Bump to 3.
        (scm_struct_i_ptr): New "field".
        * gc.c (scm_gc_sweep): When we need to free the data, use the
        information stored by alloc_struct to find the beginning of the
        block allocated to the structure, so we can free it.

Mon Oct 14 17:07:55 1996  Mikael Djurfeldt  <mdj@woody.nada.kth.se>

        * init.c (scm_boot_guile_1): Moved scm_init_struct in front of
        scm_init_stacks.

        * debug.h (SCM_VOIDFRAME, SCM_VOIDFRAMEP): New macros.
        (scm_debug_info): New member: id.

        * stacks.c: Stacks are now represented as structs; Stacks have an
        id given to them by `start-stack'.
        (scm_last_stack_frame): Added predicates `stack?' and `frame?'.

        * stacks.h: Added declarations of scm_stack_p and scm_frame_p;
        Changed stack representation.

        * debug.c (scm_procedure_name): Try procedure property `name' for
        compiled closures aswell.

        * gc.c (scm_init_storage): Initialize scm_stand_in_procs to SCM_EOL.

        * eval.c: scm_i_name moved to gsubr.c
        (scm_m_define): Record names of all kinds of procedure
        objects.  (Earlier, only closures were recorded.)

        * procprop.h: Added declaration of scm_i_name.

        * gsubr.c: Added global scm_i_name.  Added #include "procprop.h".
        (scm_make_gsubr): Record names of compiled closures.
        
Mon Oct 14 04:21:51 1996  Mikael Djurfeldt  <mdj@woody.nada.kth.se>

        * debug.c, debug.h: Removed obsolete code.

        * continuations.c, continuations.h, debug.c, gc.c, init.c, root.c,
        stacks.c: Renamed regs --> scm_contregs.

        * print.c (scm_free_print_state): Cleanup print state before
        returning it to pool.  It is better to do it here than in
        scm_prin1 since scm_prin1 is called often.

        * srcprop.c (scm_source_properties, scm_set_source_properties_x,
        s_set_source_property_x): Check that first argument is a pair or a
        memoized object.

        * srcprop.c, srcprop.h: Made scm_i_filename, scm_i_copy,
        scm_i_line, scm_i_column and scm_i_breakpoint global.

        * init.c: Added #include "backtrace.h" and #include "stacks.h".
        (scm_boot_guile_1): Added calls to scm_init_backtrace and
        scm_init_stacks.

        * debug.h: Added debug object smob declaration and macro
        definitions.

        * configure.in: Build with backtrace.o and stacks.o if debug
        support enabled.

        * Makefile.in: Added entries for new files: backtrace.c,
        backtrace.h, stacks.c and stacks.h.

        * symbols.c (scm_sym2ovcell): Fixed documentation.

        * _scm.h (min, max): Added.

        * async.c: Moved `min' macro to _scm.h.

        * debug.h: New debug options SCM_BACKTRACE_MAXDEPTH and
        SCM_BACKTRACE_INDENT.

        * eval.c: Added new debug options `maxdepth' and `indent'.

        * print.c (make_print_state): Bugfix: Initialize pstate->ceiling.

        * print.h: Added selector SCM_PRINT_STATE.

        * print.c: New functions: scm_make_print_state,
        scm_free_print_state.

        * print.h: Added declarations for scm_make_print_state,
        scm_free_print_state.
        
        * debug.c (scm_m_start_stack): New acro.

        * debug.h: Small cleanup.

        * init.c (scm_boot_guile_1): Moved scm_init_debug below
        scm_init_eval.

Sun Oct 13 20:14:53 1996  Jim Blandy  <jimb@totoro.cyclic.com>

        * __scm.h, alist.c, alist.h, append.c, append.h, appinit.c,
        arbiters.c, arbiters.h, async.c, async.h, boolean.c, boolean.h,
        chars.c, chars.h, continuations.c, continuations.h, debug.c,
        debug.h, dynwind.c, dynwind.h, eq.c, eq.h, error.c, eval.c,
        eval.h, extchrs.c, extchrs.h, fdsocket.c, fdsocket.h, filesys.c,
        filesys.h, fports.c, fports.h, gc.c, gdb_interface.h, gdbint.c,
        gdbint.h, genio.c, genio.h, gscm.c, gscm.h, gsubr.c, gsubr.h,
        hash.c, hash.h, hashtab.c, hashtab.h, init.c, ioext.c, ioext.h,
        kw.c, kw.h, libguile.h, mallocs.c, mallocs.h, markers.c,
        markers.h, mbstrings.c, mbstrings.h, numbers.c, numbers.h,
        objprop.c, objprop.h, options.c, options.h, pairs.c, pairs.h,
        ports.c, ports.h, posix.c, posix.h, print.c, print.h, procprop.c,
        procprop.h, procs.c, procs.h, ramap.c, ramap.h, read.c, read.h,
        root.c, scmsigs.c, scmsigs.h, sequences.c, sequences.h, simpos.c,
        simpos.h, smob.c, socket.c, socket.h, srcprop.c, srcprop.h,
        stackchk.c, stackchk.h, stime.c, stime.h, strings.c, strings.h,
        strop.c, strop.h, strorder.c, strorder.h, strports.c, strports.h,
        struct.c, struct.h, symbols.c, symbols.h, tag.c, tag.h, unif.c,
        unif.h, variable.c, variable.h, vectors.c, vectors.h, version.c,
        version.h, vports.c, vports.h, weaks.c, weaks.h: Use SCM_P to
        declare functions with prototypes.  (Patch thanks to Marius
        Vollmer.)

        More prototype-related changes from Marius Vollmer:
        * gdb_interface.h: Wrapped header file in #ifdef/#endif
        * gscm.h (gscm_run_scm): Added prototype for `initfn' paramter.
        * ports.h (ptobfuns): Added prototypes. This means some casting in
        fports.c.
        * fports.c: Added casts for initializations, since the functions
        are defined to take FILE * as their stream argument, not SCM.
        * fdsocket.c, fdsocket.h: Made `init_addr_buffer' static.
        * genio.c (scm_gen_puts): Changed `unsigned char *str_data' parameter
        to `char *str_data' to conform to prototype.

Sat Oct 12 21:49:29 1996  Gary Houston  <ghouston@actrix.gen.nz>

        * error.c, eval.c, load.c, stackchk.c: use scm_error not lgh_error.

        * __scm.h (lgh_error): removed, lgh shouldn't be in libguile.

        * stime.c, stime.h: use SCM_P method.
        
Sat Oct 12 16:16:25 1996  Jim Blandy  <jimb@floss.cyclic.com>

        * eval.c (scm_nconc2last): Don't accept an empty list; apply must
        be given at least two arguments.  Insist that lst's last element
        be a list, but don't make any requirements of its predecessors.

Fri Oct 11 03:58:25 1996  Jim Blandy  <jimb@floss.cyclic.com>

        * eval.c (scm_nconc2last): Revert last change; there seems to be
        other stuff going on here.

Fri Oct 11 02:43:59 1996  Jim Blandy  <jimb@totoro.cyclic.com>

        * eval.c (scm_nconc2last): Make sure that each element of lst
        (which is a list of argument lists, except for the tail) is a
        proper list, i.e., finite and terminated by '().

Thu Oct 10 21:09:13 1996  Jim Blandy  <jimb@totoro.cyclic.com>

        * unif.c (scm_ra_set_contp): Localize `inc' declaration.
        Clarifies flow.

        * struct.c (scm_make_struct, scm_make_vtable_vtable): Use the
        symbolic name for the tag, scm_tc3_cons_gloc, instead of just
        saying "1".

        * vectors.c (scm_make_vector): Fill vectors with the undefined
        value, to help make Guile Scheme code more portable to other
        Schemes.

        * symbols.c (scm_intern_obarray_soft, scm_sysintern): Doc fixes.
        * symbols.h, tags.h: Doc fixes.
        
Wed Oct  9 19:39:29 1996  Jim Blandy  <jimb@floss.cyclic.com>

        * async.c (scm_take_signal): Doc fixes.

Mon Oct  7 22:30:34 1996  Jim Blandy  <jimb@totoro.cyclic.com>

        * numbers.c (scm_divbigint): When the remainder is zero, we don't
        want to subtract it from the modulus; we just want to leave it
        alone.

Mon Oct  7 00:14:17 1996  Mikael Djurfeldt  <mdj@kenneth>

        * init.c (scm_boot_guile_1): Bugfix: i --> base in argument to
        `scm_init_threads'.

        * throw.h (scm_catch_apply): Removed the `lazyp' argument.

        * throw.c (scm_catch_apply): Finished implementation of
        `lazy-catch'.

Sun Oct  6 05:26:05 1996  Gary Houston  <ghouston@actrix.gen.nz>

        * filesys.c (scm_sys_select): move SCM_ALLOW_INTS past the sreturn
        check.
        (scm_init_filesys): set "i/o-extensions" feature.
        include feature.h.
        
Sat Oct  5 12:22:00 1996  Jim Blandy  <jimb@floss.cyclic.com>

        * Makefile.in (root.o): Correct dependencies.

Sat Oct  5 18:40:42 1996  Mikael Djurfeldt  <mdj@kenneth>

        * Makefile.in: Added dependency entry for root.o.

        * continuations.c, debug.[ch], eval.c, gscm.c init.c, root.c,
        throw.c: Renamed last_debug_info_frame -> scm_last_debug_frame.

        * init.c (scm_start_stack): Set initial root continuation number
        to 0.

        * procs.c: New function: scm_thunk_p.

        * procs.h: Added declarations of scm_thunk_p.

        * root.c: Renamed `call-with-new-root' -->
        `call-with-dynamic-root'.
        (cwdr): Removed allocation of new root state.  This should be done
        separately by use of scm_make_root.
        (scm_apply_with_dynamic_root): New function: Does what it
        sounds like.  Needed when spawning threads.

        * root.h: Added member last_debug_frame to root state.
        Added #include "libguile/debug.h"

        * throw.c: Renamed scm_catch --> scm_catch_apply and added more
        arguments.  The motivation is that code in root.c needs catch
        functionality, and we want to avoid code duplication.
        New functions: scm_catch, scm_lazy_catch.  These are wrappers for
        scm_catch_apply.  scm_lazy_catch is intended to introduce catch
        handlers that run without popping the stack into the dynwind
        chain.

        * throw.h: Added prototypes for scm_catch_apply and
        scm_lazy_catch.

Thu Oct  3 11:12:33 1996  Mikael Djurfeldt  <mdj@woody.nada.kth.se>

        * root.h (scm_root, scm_set_root): Decouple thread support details
        by introducing the selector SCM_THREAD_LOCAL_DATA and the mutator
        SCM_SET_THREAD_LOCAL_DATA.

        * print.c (scm_iprlist): Bugfix: Added SCM_ECONSP tests in hare
        and tortoise scanning loop.

Thu Oct  3 00:04:53 1996  Jim Blandy  <jimb@totoro.cyclic.com>

        * Makefile.in: Rebuild dependencies.

        * libguile.h: #include "libguile/print.h" before "smob.h", since
        the latter uses the print_state structure.

        * throw.c (scm_ithrow): Use the correct variable when checking to
        see if a given element of scm_dynwinds is a valid catch.

        * throw.c (scm_ithrow): If scm_dynwinds has invalid list
        structure, abort; don't just silently ignore the garbage.

        * _scm.h: #include "print.h" here, since it seems to be used just
        about everywhere.
        * eval.c, gdbint.c, genio.h, numbers.h, smob.h, srcprop.c,
        strports.c, unif.h: Don't #include "print.h".

Tue Oct  1 05:15:10 1996  Mikael Djurfeldt  <mdj@woody.nada.kth.se>
        
        * feature.h (scm_loc_features): Removed external declaration.
        (Bug fix suggested by Petr Adamek <adamek@mit.edu>.)

Tue Oct  1 00:00:10 1996  Mikael Djurfeldt  <mdj@woody.nada.kth.se>

        * feature.c (scm_init_feature): Added threads feature (needs to be
        initialized here, since features doesn't exist when
        scm_init_threads is called).

        * libguile.h: Added #include "libguile/../threads/threads.h".
        (This is a kludge to get thread support working.  This should be
        fixed.)

        * configure.in, acconfig.h: Added flags for thread support.

        * scmsigs.c: Define `signal' to be `pthread_signal' if using
        mit-pthreads.

        * gc.c (scm_igc): Added SCM_THREAD_CRITICAL_SECTION_START and
        SCM_THREAD_CRITICAL_SECTION_END.  Moved marking of root data to
        root.c:mark_root.

        * _scm.h: Added conditional #include "threads.h"

        * __scm.h (SCM_ASYNC_TICK): Added call to macro
        SCM_THREADS_SWITCHING_CODE.

        * init.c (scm_start_stack): Call `scm_make_root' to dynamically
        allocate the basic dynamic root object.
        (scm_boot_guile): Added call to scm_init_root.

        * root.c, root.h: Added root smob.
        (cwdr, scm_call_with_new_root, scm_dynamic_root, scm_app_wdr): New
        functions: Implements dynamic roots mostly according to spec in
        SCM manual.  Main difference is that the second argument is a
        throw handler rather than an error "thunk".

        * root.h: Added declaration of scm_init_root.

        * root.c: Added #include "genio.h", #include "smob.h", #include
        "pairs.h", #include "throw.h", #include "dynwind.h", #include
        "eval.h"
        (scm_init_root): Added #include "root.x".

        * throw.c: Added #include "stackchk.h"
        (scm_catch): Changed SCM_DEFER_INTS --> SCM_REDEFER_INTS and
        SCM_ALLOW_INTS --> SCM_REALLOW_INTS.  This is so that scm_catch
        can be used in scm_call_with_new_root; Added reenabling of stack
        checking when catching a throw.

Mon Sep 30 21:48:11 1996  Jim Blandy  <jimb@totoro.cyclic.com>

        * list.c, list.h: Use SCM_P instead of CPP hair.  Doc fixes.

        * list.c (scm_member, scm_memv, scm_memq): Return #f if a matching
        element is not found, as per R4RS.

Sat Sep 28 18:13:01 1996  Jim Blandy  <jimb@totoro.cyclic.com>

        * list.c: Doc fixes throughout.

Sat Sep 28 02:07:43 1996  Gary Houston  <ghouston@actrix.gen.nz>

        * strings.c, strings.h: (scm_makfrom0str, scm_makefrom0str_opt:
        declare the char * to be const.  Avoids a warning in rgx.c.

        * ports.h: spelling fix.

        * filesys.c (scm_sys_stat, scm_sys,lstat): include file name in
        error messages.

        * load.c (scm_sys_try_load_path): throw an error if file not found
        (like it says it in NEWS).

Fri Sep 27 18:27:01 1996  Jim Blandy  <jimb@totoro.cyclic.com>

        * symbols.c (scm_intern_obarray_soft): Initialize the new symbol's
        PROPS slot to '(), not #f; it's an empty alist.

        * throw.h, throw.c: Use SCM_P instead of #if hair.

        Remove special support for uncaught throws; see throw.c for
        rationale. 
        * throw.c (uncaught_throw): New function.
        (scm_ithrow): Call uncaught_throw if we don't find a throw
        target; don't mess with scm_bad_throw_vcell.
        (scm_bad_throw_vcell): Variable deleted.
        (scm_init_throw): Don't initialize it.

        * throw.c (scm_ithrow): Don't let outer key matches shadow inner
        #t catches.

Wed Sep 25 04:35:50 1996  Jim Blandy  <jimb@totoro.cyclic.com>

        * numbers.c (scm_istr2int): If the number is short (as most
        numbers are), just call scm_small_istr2int to deal with it.
        (scm_small_istr2int): New function, created by un-#ifdefing the
        non-bignum version of scm_istr2int and renaming it.

Tue Sep 24 06:48:38 1996  Gary Houston  <ghouston@actrix.gen.nz>

        * load.c (scm_sys_try_load): don't check whether value returned
        by scm_open_file is #f, it won't be.  Always return SCM_UNSPECIFIED.
        Change the Scheme name from %try-load to primitive-load.

        * error.c (scm_error): convert a NULL message to SCM_BOOL_F.
        Can avoid passing a message, allowing it to be derived in the
        error handler (e.g., if we want to throw to the key both from
        Scheme and C).

Mon Sep 23 00:42:15 1996  Mikael Djurfeldt  <mdj@kenneth>

        * print.c (scm_iprin1, scm_prin1, scm_iprlist): Circular
        references now have a new appearance which is more compact and
        also gives a clue about what the target of the reference is.
        By setting parameters in the print state, more fancy printing can
        be achieved.  This is used by the (not yet commited) backtrace
        code.

Sun Sep 22 17:10:06 1996  Mikael Djurfeldt  <mdj@kenneth>

        * eval.c, numbers.h, unif.h, smob.h, srcprop.c: Added #include
        "print.h"
        
        * print.c: Added #include "struct.h".  Removed function
        scm_prlist.

        * print.h: Modified prototypes for scm_iprlist, scm_prin1 and
        scm_iprin1.  Removed prototype for scm_prlist.
        
        * arbiters.c (prinarb),
        async.c (print_async),
        debug.c (prindebugobj, prinmemoized),
        eval.c (prinprom, prinmacro),
        filesys.c (scm_fd_print, scm_dir_print),
        kw.c (print_kw),
        mallocs.c (prinmalloc),
        numbers.c, numbers.h (scm_floprint, scm_bigprint),
        smob.h (scm_smobfuns),
        srcprop.c (prinsrcprops),
        throw.c (prinjb),
        unif.c, unif.h (scm_raprin1, rapr1),
        variable.c (prin_var): Changed argument `int writing' to
        `scm_print_state *pstate'.

        * init.c (scm_boot_guile): Moved scm_init_struct upwards so
        that it will be called before scm_init_print.

        * print.c (scm_prin1): Print states are now allocated when calling
        scm_prin1 and then passed around to all printing functions as an
        argument.  A cache `print_state_pool' enables reuse of print
        states.
        (scm_make_print_state): New function.
        (scm_iprin1): Adaption to print states.
        (scm_iprlist): An initial "hare and tortoise" scan brings down
        time complexity to O (depth * N).  (Better time complexity will be
        achieved when the printing code is completely rewritten.)
        
Fri Sep 20 22:01:36 1996  Jim Blandy  <jimb@totoro.cyclic.com>

        * aclocal.m4 (GUILE_STRUCT_UTIMBUF): Use AC_CACHE_CHECK instead of
        AC_CACHE_VAL; #define UTIMBUF_NEEDS_POSIX outside AC_CACHE_VAL, so
        it gets done whether or not the cache variable has a value.

Thu Sep 19 17:06:39 1996  Jim Blandy  <jimb@totoro.cyclic.com>

        Distinguish #f and ().
        * __scm.h: #undef SICP.
        * pairs.h (SCM_EOL): Delete this definition, equating it with
        SCM_BOOL_F.
        * tags.h (SCM_EOL): Give it a new definition here; I think I found
        the value it used to have.  Doc fixes, too.

Thu Sep 19 15:33:51 1996  Mikael Djurfeldt  <mdj@kenneth>

        * struct.c (scm_make_struct_layout, init_struct, scm_struct_ref,
        scm_struct_set_x), struct.h, gc.c (scm_gc_mark): Completed Tom
        Lord's implementation of structs, allowing for tail arrays as
        described in the manual. Also fixed some bugs. (Both the interface
        and the implementation should be improved.)

        * read.c (scm_init_read): Removed #ifdef READER_EXTENSIONS

        * print.c, print.h: Closures now print like #<procedure foo (x)>.
        People who whish to see the source can do `(print-enable 'source)'.
        Removed #ifdef DEBUG_EXTENSIONS.
        
Thu Sep 19 00:00:29 1996  Gary Houston  <ghouston@actrix.gen.nz>

        * filesys.c (scsm_sys_stat): don't SIGSEGV if argument is an
        integer (assuming for now accepting an integer is a good thing).

        * error.c, fports.c: replace use of %S in lgh_error args with %s.
        %S will be used instead for write'ing arguments.

        * unif.c (scm_transpose_array): change arguments in the SCM_WNA
        asserts.  fix a few other asserts.
        (scm_aind, scm_enclose_array, scm_array_in_bounds_p,
        scm_uniform_vector_ref, scm_array_set_x,
        scm_dimensions_to_unform_array): change args in
        SCM_WNA SCM_ASSERTS and change scm_wta's to scm_wrong_num_args.
        strop.c (scm_substring_move_left_x, scm_substring_move_right_x,
        scm_substring_fill_x): likewise.
        gsubr.c (scm_gsubr_apply): likewise.
        eval.c (SCM_APPLY): likewise.

        * eval.c (4 places): replace scm_everr with lgh_error or
        scm_wrong_num_args.

        * error.c, error.h (scm_wrong_num_args, scm_wrong_type_arg,
        scm_memory_error): new procedures.
        scm_everr: deleted.  can use scm_wta, dropping first two args.
        scm_error: convert NULL subr to SCM_BOOL_F.

        * __scm.h: don't define SCM_STACK_OVFLOW, SCM_EXIT, SCM_ARG6, SCM_ARG7,
        SCM_ARGERR.

        * stackchk.c (scm_report_stack_overflow): use lgh_error instead
        of scm_wta.

        * error.c, error.h: new error keys: scm_arg_type_key,
        scm_args_number_key, scm_memory_alloc_key, scm_stack_overflow_key,
        scm_misc_error_key.
        scm_wta: reimplement using lgh_error instead of scm_everr.

Wed Sep 18 17:13:35 1996  Mikael Djurfeldt  <mdj@kenneth>

        * gdbint.c: scm_lread now has one more argument.

        * ports.c, ports.h: Name change: scm_\(line\|column\)_number -->
        scm_port_\1; Added mutator scm_set_port_filename_x (used when
        loading source from non-file ports, which, e. g., happens when
        using the Emacs interface).

        * fports.c (scm_open_file): Don't call scm_makfrom0str on a scheme
        object.

        * read.c: Added code for recording of positions of source code
        expressions; New functions: recsexpr, scm_lreadrecparen;
        _scm_make_srcprops --> scm_make_srcprops
        (scm_flush_ws): Removed updating of positions counters.  This work
        is already done by scm_gen_getc

        * read.h: Added prototype for scm_lreadrecparen
        
        * print.c: Added #include "alist.h"

        * eval.c: Added #include "hash.h"

        * eq.c: Added #include "ramap.h"

        * options.c: Documentation fixes.

        * srcprop.c (scm_finish_srcprop): Bugfix: update ptr.
        (scm_init_srcprop): Adjusted size of initial source-whash.  Name
        changes: tc16_srcprops --> scm_tc16_srcprops, _scm_make_srcprops
        --> scm_make_srcprops

        * srcprop.h: Name changes: tc16_srcprops --> scm_tc16_srcprops,
        _scm_make_srcprops --> scm_make_srcprops; Remove one layer of
        function calls in the definition of the whash access macros.

Tue Sep 17 11:33:16 1996  Lee Iverson  <leei@Canada.AI.SRI.COM>

        * init.c (scm_boot_guile): Add level of indirection to
        scm_boot_guile_1() to ensure that stack base pointer is properly
        initialized.  There was no guarantee that variable i was the
        highest/lowest variable on stack (i.e. the call frame of
        scm_boot_guile was not completely protected from gc).

Tue Sep 17 01:40:56 1996  Gary Houston  <ghouston@actrix.gen.nz>

        * ports.h (scm_port_table): put back file_name, it will be used to
        support debugging.  Undo related changes in fports.c, ioext.c,
        ports.c, gc.c.

Sun Sep 15 03:58:29 1996  Gary Houston  <ghouston@actrix.gen.nz>

        * ports.h (scm_port_table): remove file_name member for now, it seems
        undesirable.
        * fports.c (scm_open_file): don't set file_name in PTAB.
        (prinfport): don't use file_name in PTAB.
        * ioext.c (scm_sys_duplicate_port): don't set file_name in PTAB.
        * ports.c (scm_add_to_port_table): don't intialize file_name.
        (scm_port_file_name): remove for now.
        * gc.c (scm_gc_mark): don't mark PTAB file_name.

        * fports.h (scm_mkfile): prototype deleted.
        * fports.c (scm_mkfile): merged into scm_open_file to simplify.

        * debug.c, unif.c: use scm_out_of_range instead of
        wta for range errors (ASSERT still needs work).

        * error.c, error.h (scm_out_of_range): new procedure.

        * error.c, error.h (scm_out_of_range_key): new key.

        * posix.c (scm_sync): #else was missing.

        * error.c, error.h: append _key to names scm_num_overflow and
        scm_system_error.

        * __scm.h (SCM_SYSMISSING, SCM_NUM_OVERFLOW): use SCM_BOOL_F instead
        of consing an empty list.
        (SCM_SYSERROR etc.): move into error.c, make them procedures instead
        of macros, saves code and string space.
        error.c, fports.c, numbers.c, posix.c, ioext.c, filesys.c, socket.c,
        fdsocket.c, simpos.c: change names of SCM_SYSERROR etc., to
        lower case.  Rename scm_syserror_m to scm_syserror_msg.
        error.h: prototypes for new procedures.

Sat Sep 14 03:35:41 1996  Gary Houston  <ghouston@actrix.gen.nz>

        * numbers.c: use SCM_NUM_OVERFLOW instead of scm_wta or ASSERT.

        * error.c, error.h: setup scm_num_overflow key.

        * __scm.h: SCM_NUM_OVERFLOW: macro for reporting numerical overflow.
        Remove definition of SCM_OVSCM_FLOW.

        * fports.c (scm_open_file): use SCM_SYSERROR_M.

        * __scm.h: SCM_SYSERROR_M: new macro for system errors with an
        explicit message and args.

        * error.c, error.h, __scm.h: change system_error_sym to
        scm_system_error.

        * error.c (system_error_sym): remove leading %% from the Scheme name
        "%%system-error". 

        * __scm.h (SCM_SYSMISSING): Redefine using lgh_error.

Fri Sep 13 12:58:08 1996  Mikael Djurfeldt  <mdj@woody.nada.kth.se>

        * __scm.h, chars.c, debug.c, eval.c, eval.h, extchrs.c, extchrs.h,
        fdsocket.c, feature.c, mbstrings.c, mbstrings.h, numbers.c,
        numbers.h, print.c, scmhob.h, simpos.h, symbols.c, symbols.h,
        tags.h, throw.c, variable.h: Name cleanup.  Lots of xxxSCM_yyy
        renamed.  (These were introduced by unsupervised name
        substitution.)

Fri Sep 13 01:19:08 1996  Mikael Djurfeldt  <mdj@woody.nada.kth.se>

        * print.c: Added code for detection of circular references during
        printing.  (init_ref_stack, grow_ref_stack): New functions.  Added
        a hook for printing of closures (accessible via print options).
        This leads to a split of calls to scm_iprin1 into two classes:
        elementary print operations (e. g. the code which prints a smob)
        still use scm_iprin1 while top level calls (like scm_display) use
        scm_prin1.  scm_prin1 begins by clearing the data structure used
        to record reference information.

        * print.h: Added declarations of scm_prin1 and scm_prlist.

        * strports.c (scm_strprint_obj): scm_iprin1 --> scm_prin1

        * gscm.c (gscm_portprint_obj): scm_iprin1 --> scm_prin1

        * gscm.h (gscm_print_obj): scm_iprin1 --> scm_prin1

        * error.c (err_head): scm_iprin1 --> scm_prin1

        * debug.c: Adjusted header comment.

        * tags.h: Typo.

Wed Sep 11 17:55:59 1996  Jim Blandy  <jimb@totoro.cyclic.com>

        * strerror.c: Doc fix.

Thu Sep 12 00:00:32 1996  Mikael Djurfeldt  <mdj@woody.nada.kth.se>

        * gdbint.c (gdb_read): Now possible to run during GC.
        (unmark_port, remark_port): New functions.

        * symbols.h (SCM_SETLENGTH): Use SCM_SETCAR.

        * read.c (scm_grow_tok_buf): Use scm_vector_set_length_x instead
        of allocating a new string object.  Also, increase size by
        the factor 2 instead of 1.5.

Wed Sep 11 15:10:38 1996  Petr Adamek  <jimb@floss.cyclic.com>

        * __scm.h (SCM_P): Corrected to run under traditional C.

        * _scm.h (SCM_PROC): Extraneous semicolon (outside functions)
        removed.

        * async.c: Calls to scm_sysintern corrected.

        * async.h (scm_async_clock): Redundant declaration removed.

        * continuations.c (scm_dynthrow): Redundant declaration removed.

        * debug.c (scm_single_step, scm_memoized, scm_lookup_soft):
        Definition typos corrected.

        * debug.h: Missing declarations of functions in debug.c added
        (lots).

        * eval.h (scm_eval_args, scm_deval_args, scm_m_undefine):
        Missing declarations to functions in eval.c added.

        * filesys.c: Possibly uninitialized variable rv.

        * gc.h (scm_object_addr, scm_unhash_name): Missing
        declarations of functions defined in gc.c added.

        * genio.c: Possible typos str_data -> wstr_data. ???

        * genio.c: Possibly unintended shadowing of local variable
        `int c' (gotos out of scope of inner `c'). ???

        * init.c: Uninitialized `SCM last' may be used.

        * ioext.h: (scm_sys_isatty_p): Typo.

        * list.h (scm_list_head): Missing prototype for function in
        list.c added.

        * numbers.c (scm_two_doubles): Changed from extern to static
        (is used only within numbers.c).

        * numbers.h: Repeated declarations removed.

        * ports.h (scm_close_all_ports_except): Declaration for the
        function defined in ports.c added.

        * posix.h: Missing declarations added.

        * procs.h (scm_make_subr_opt): Missing declaration added.

        * socket.h (scm_sys_gethost): Missing declaration added.

        * socket.h: Redundant declarations removed (they are in fdsocket.h).

        * srcprop.h (scm_set_source_property_x, scm_finish_srcprop):
        Missing declarations added.

        * stime.h (scm_get_internal_real_time): Repeated declarations removed.

        * struct.c: Uninitialized variable `SCM answer' may be used.

        * unif.c (l2ra): Declaration prototype.

        * unif.c (scm_array_equal_p): Dummy definition removed (it is
        defined in ramap.c).

        * unif.h (scm_raprin1, scm_istr2bve, scm_array_equal_p):
        Redundant declarations removed (they are in ramap.h).

        * variable.h (scm_make_udvariable,
        scm_make_undefined_variable): Declaration corrected to
        correspond variable.c.

        * vectors.h (scm_vector_move_left_x, scm_vector_move_right_x):
        Missing declarations added.

Wed Sep 11 14:38:50 1996  Jim Blandy  <jimb@floss.cyclic.com>

        * Makefile.in (distclean): Don't forget to delete fd.h.

Tue Sep 10 14:01:46 1996  Jim Blandy  <jimb@floss.cyclic.com>

        * fd.h.in, tags.h: Trivial cleanups. 

        * marksweep.c, marksweep.h: Deleted; marksweep.c was empty, and
        marksweep.h just declared functions from gc.c.
        * gc.h, libguile.h: Don't #include "marksweep.h".
        * Makefile.in (libobjs, inner_h_files, c_files, gen_c_files): Omit
        marksweep.o, marksweep.h, marksweep.c, and marksweep.x.  Other
        dependencies updated.

        * libguile.h: Don't #include "files.h"; it's been deleted.

        * files.c (scm_sys_delete_file): Moved to filesys.c.
        File is now empty; deleted.
        * files.h: Deleted.
        * filesys.c: scm_sys_delete_file is now here.  Remove
        #if's; they seem to rely on remnants of an old portability
        regimen.  If the problems come up again, solve them properly,
        using autoconf.  Specifically: Don't test M_SYSV, and #define
        remove to be unlink if it's #defined; don't use remove just
        because HAVE_STDC_HEADERS is #defined.
        * filesys.h: Add declarations for scm_sys_delete_file.
        * Makefile.in (libobjs, inner_h_files, c_files, gen_c_files): Omit
        files.o, files.h, files.c, and files.x.
        * init.c: Don't #include "files.h", and don't call scm_init_files.

        Use SCM_P instead of PROTO; the latter intrudes on the user's
        namespace.
        * params.h: Deleted; definition of SCM_P moved to...
        * __scm.h: ... here, where it replaces PROTO macro.
        * libguile.h, smob.h: Don't #include "params.h".
        * continuations.c, error.h, feature.h, gc.c, gc.h, init.h, load.h,
        smob.h: Fix prototypes accordingly.
        * Makefile.in: Update dependencies.
        (inner_h_files): Remove params.h.

        * gc.c: #include "gc.h"; every module should include its header,
        to let the compiler cross-check the declarations against the
        definitions.

        * eq.h, files.h, hashtab.h, load.h, mallocs.h, scmsigs.h,
        simpos.h: #include "libguile/__scm.h".

Mon Sep  9 20:00:15 1996  Jim Blandy  <jimb@floss.cyclic.com>

        * init.c: Don't forget to #include smob.h and init.h.
        * Makefile.in: Dependencies updated.

        * smob.h: Use PROTO instead of #if __STDC__.

        * continuations.c (scm_dynthrow): Use PROTO, not SCM_P. 

        * __scm.h: Doc fixes.

        * __scm.h, libguile.h: Use "quotes" in the #includes, not
        <angles>; this allows `make depends' to work properly.

        * libguile.h: #include smob.h and pairs.h before the others; they
        define typedefs used by other headers.
        
        C files should #include only the header files they need, not
        libguile.h (which #includes all the header files); the pointless
        recompilation was wasting my time.
        * Makefile.in (all .o dependency lists): Regenerated.
        * libguile.h: Don't try to get a definition for size_t here...
        * __scm.h: Do it here.
        * _scm.h: Since this is the internal libguile header, put things
        here that all (or a majority) of the libguile files will want.
        Don't #include <libguile.h> here; that generates dependencies on
        way too much.  Instead, get "__scm.h", "error.h", "pairs.h",
        "list.h", "gc.h", "gsubr.h", "procs.h", "numbers.h", "symbols.h",
        "boolean.h", "strings.h", "vectors.h", "root.h", "ports.h", and
        "async.h".
        * alist.c: Get "eq.h", "list.h", "alist.h".
        * append.c: Get "append.h", "list.h".
        * arbiters.c: Get "arbiters.h", "smob.h".
        * async.c: Get "async.h", "smob.h", "throw.h", "eval.h".
        * boolean.c: Get "boolean.h".
        * chars.c: Get "chars.h".
        * continuations.c: Get "continuations.h", "dynwind.h", "debug.h",
        "stackchk.h".
        * debug.c: Get "debug.h", "feature.h", "read.h", "strports.h",
        "continuations.h", "alist.h", "srcprop.h", "procprop.h", "smob.h",
        "genio.h", "throw.h", "eval.h".
        * dynwind.c: Get "dynwind.h", "alist.h", "eval.h".
        * eq.c: Get "eq.h", "unif.h", "smob.h", "strorder.h",
        "stackchk.h".
        * error.c: Get "error.h", "throw.h", "genio.h", "pairs.h".
        * eval.c: Get "eval.h", "stackchk.h", "srcprop.h", "debug.h",
        "hashtab.h", "procprop.h", "markers.h", "smob.h", "throw.h",
        "continuations.h", "eq.h", "sequences.h", "alist.h", "append.h",
        "debug.h".
        * fdsocket.c: Get "fdsocket.h", "unif.h", "filesys.h".
        * feature.c: Get "feature.h".
        * files.c: Get "files.h".
        * filesys.c: Get "filesys.h", "smob.h", "genio.h".
        * fports.c: Get "fports.h", "markers.h".
        * gc.c: Get "async.h", "unif.h", "smob.h", "weaks.h",
        "genio.h", "struct.h", "stackchk.h", "stime.h".
        * gdbint.c: Get "gdbint.h", "chars.h", "eval.h", "print.h",
        "read.h", "strports.h", "tag.h".
        * genio.c: Get "genio.h", "chars.h".
        * gsubr.c: Get "gsubr.h", "genio.h".
        * hash.c: Get "hash.h", "chars.h".
        * hashtab.c: Get "hashtab.h", "eval.h", "hash.h", "alist.h".
        * init.c: Get everyone who has an scm_init_mumble function:
        "weaks.h", "vports.h", "version.h", "vectors.h", "variable.h",
        "unif.h", "throw.h", "tag.h", "symbols.h", "struct.h",
        "strports.h", "strorder.h", "strop.h", "strings.h", "stime.h",
        "stackchk.h", "srcprop.h", "socket.h", "simpos.h", "sequences.h",
        "scmsigs.h", "read.h", "ramap.h", "procs.h", "procprop.h",
        "print.h", "posix.h", "ports.h", "pairs.h", "options.h",
        "objprop.h", "numbers.h", "mbstrings.h", "mallocs.h", "load.h",
        "list.h", "kw.h", "ioext.h", "hashtab.h", "hash.h", "gsubr.h",
        "gdbint.h", "gc.h", "fports.h", "filesys.h", "files.h",
        "feature.h", "fdsocket.h", "eval.h", "error.h", "eq.h",
        "dynwind.h", "debug.h", "continuations.h", "chars.h", "boolean.h",
        "async.h", "arbiters.h", "append.h", "alist.h".
        * ioext.c: Get "ioext.h", "fports.h".
        * kw.c: Get "kw.h", "smob.h", "mbstrings.h", "genio.h".
        * list.c: Get "list.h", "eq.h".
        * load.c: Get "load.h", "eval.h", "read.h", "fports.h".
        * mallocs.c: Get "smob.h", "genio.h".
        * markers.c: Get "markers.h".
        * mbstrings.c: Get "mbstrings.h", "read.h", "genio.h", "unif.h",
        "chars.h".
        * numbers.c: Get "unif.h", "genio.h".
        * objprop.c: Get "objprop.h", "weaks.h", "alist.h", "hashtab.h".
        * options.c: Get "options.h".
        * ports.c: Get "ports.h", "vports.h", "strports.h", "fports.h",
        "markers.h", "chars.h", "genio.h".
        * posix.c: Get "posix.h", "sequences.h", "feature.h", "unif.h",
        "read.h", "scmsigs.h", "genio.h", "fports.h". 
        * print.c: Get "print.h",  "unif.h", "weaks.h", "read.h",
        "procprop.h", "eval.h", "smob.h", "mbstrings.h", "genio.h",
        "chars.h".
        * procprop.c: Get "procprop.h", "eval.h", "alist.h".
        * procs.c: Get "procs.h".
        * ramap.c: Get "ramap.h", "feature.h", "eval.h", "eq.h",
        "chars.h", "smob.h", "unif.h".
        * read.c: Get "alist.h", "kw.h", "mbstrings.h", "unif.h",
        "eval.h", "genio.h", "chars.h".
        * root.c: Get "root.h", "stackchk.h".
        * scmsigs.c: Get "scmsigs.h".
        * sequences.c: Get "sequences.h".
        * simpos.c: Get "simpos.h", "scmsigs.h".
        * smob.c: Get "smob.h".
        * socket.c: Get "socket.h", "feature.h".
        * srcprop.c: Get "srcprop.h", "weaks.h", "hashtab.h", "debug.h",
        "alist.h", "smob.h". 
        * stackchk.c: Get "stackchk.h", "genio.h".
        * stime.c: Get "stime.h"."libguile/continuations.h".
        * strings.c: Get "strings.h", "chars.h".
        * strop.c: Get "strop.h", "chars.h".
        * strorder.c: Get "strorder.h", "chars.h".
        * strports.c: Get "strports.h", "print.h", "eval.h", "unif.h".
        * struct.c: Get "struct.h", "chars.h".
        * symbols.c: Get "symbols.h", "mbstrings.h", "alist.h",
        "variable.h", "eval.h", "chars.h". 
        * tag.c: Get "tag.h", "struct.h", "chars.h".
        * throw.c: Get "throw.h", "continuations.h", "debug.h",
        "dynwind.h", "eval.h", "alist.h", "smob.h", "genio.h".
        * unif.c: Get "unif.h", "feature.h", "strop.h", "sequences.h",
        "smob.h", "genio.h", "eval.h", "chars.h".
        * variable.c: Get "variable.h", "smob.h", "genio.h".
        * vectors.c: Get "vectors.h", "eq.h".
        * version.c: Get "version.h".
        * vports.c: Get "vports.h", "fports.h", "chars.h", "eval.h".
        * weaks.c: Get "weaks.h".

        * stackchk.h: #include "libguile/debug.h",

        * print.h, read.h: #include "options.h", since everyone who uses
        either of these files will need that.

        * smob.h: #include "ports.h", "genio.h", and "print.h", since
        anyone who uses this file will need them to define the smob
        printing functions.  Also, get markers.h, since people will need
        to #define the mark functions.
        
        * smob.h (scm_ptobfuns, SCM_PTOBNUM): Definitions moved...
        * ports.h: ... to here.

        * ports.h (scm_port_table_size): Explicitly give type as 'int';
        don't rely on archaic C default type rules.

        * fports.h: #include "libguile/ports.h", since you need that in
        order to parse this.

        * genio.h: #include "libguile/print.h", because you need that to
        parse this; don't bother #including "ports.h", since print.h gets
        that.
        
        * error.h: Don't #include "pairs.h"; _scm.h will do that now.
        
        * eval.h (scm_top_level_lookup_thunk_var): Remove declaration for
        this; it's now a reference to an element of *scm_root.

        * debug.h: Don't #include "options.h"; the compiler won't be able
        to find that once the headers are installed; instead, #include
        "libguile/options.h".
        * gc.h: Same, with marksweep.h.
        * mbstrings.h: Same, with symbols.h.
        * scmhob.h: Same, with _scm.h.
        * smob.h: Same, with params.h.
        
        * Makefile.in (depends): Don't nuke scmconfig.h and the generated
        C files; there's no need for this, and it forces recompilations
        unnecessarily.

Sat Sep  7 06:57:23 1996  Gary Houston  <ghouston@actrix.gen.nz>

        * error.c (scm_error): declare scm_error_callback.

        * error.h: prototype for scm_error_callback.

        * __scm.h: define lgh_error.
        (SCM_SYSERROR): redefine using lgh_error.

Thu Sep  5 22:40:06 1996  Gary Houston  <ghouston@actrix.gen.nz>

        * error.c (scm_error): new procedure.

        * error.h: prototype for scm_error.

        * Makefile.in (install): install scmconfig.h from the current
        directory, not $(srcdir).

Thu Sep  5 11:38:07 1996  Jim Blandy  <jimb@floss.cyclic.com>

        * alist.h, append.h, arbiters.h, async.h, boolean.h, chars.h,
        continuations.h, debug.h, dynwind.h, error.h, eval.h, fdsocket.h,
        feature.h, filesys.h, fports.h, gc.h, gdbint.h, genio.h, gsubr.h,
        hash.h, init.h, ioext.h, kw.h, list.h, markers.h, marksweep.h,
        mbstrings.h, numbers.h, objprop.h, options.h, pairs.h, ports.h,
        posix.h, print.h, procprop.h, procs.h, ramap.h, read.h, root.h,
        sequences.h, smob.h, socket.h, srcprop.h, stackchk.h, stime.h,
        strings.h, strop.h, strorder.h, strports.h, struct.h, symbols.h,
        tag.h, throw.h, unif.h, variable.h, vectors.h, version.h,
        vports.h, weaks.h: #include "libguile/__scm.h", not
        <libguile/__scm.h>.  This allows 'gcc -MM' to determine which
        dependencies are within libguile properly.

Thu Sep  5 11:38:07 1996  Jim Blandy  <jimb@floss.cyclic.com>

        * Makefile.in (.c.x): Simplify; there's no need to run this rule
        when scmconfig.h doesn't exist. 

        * load.c (scm_sys_try_load): Correct spelling.

        * feature.c (scm_loc_features): Make this static.

        * Makefile.in (libpath.h): Omit trailing slash from path.  We
        shouldn't require it of users, so why put it here?

        Move code to initialize and search %load-path from ice-9 to C
        code, so we can use the load-path to find the ice-9 boot code;
        this makes it easier to run Guile without installing it.  See
        corresponding changes in guile/Makefile.in.
        * feature.c: Move stuff concerned with the load path to load.c.
        (scm_compiled_library_path): Deleted.
        Don't #include libpath.h here.
        * feature.h: Don't mention scm_compiled_library_path.
        * load.c: #include "libpath.h" here, as well as <sys/types.h>,
        <sys/stat.h>, and <unistd.h> (if present).
        (R_OK): #define if the system hasn't deigned to.
        (scm_loc_load_path): New variable.
        (scm_init_load_path, scm_sys_search_load_path,
        scm_sys_try_load_path): New functions.
        (scm_init_load): Initialize scm_loc_load_path to point to the
        value cell of the Scheme %load-path variable.
        * load.h: Add declarations for scm_sys_search_load_path,
        scm_sys_try_load_path.
        * init.c: Call scm_init_load_path.
        * Makefile.in (feature.o, load.o): Dependencies updated.

        * load.c, load.h: Rewrite using PROTO macro.
        
Thu Sep  5 01:54:33 1996  Mikael Djurfeldt  <mdj@woody.nada.kth.se>

        * gc.c (scm_cellp): New function: C predicate to determine if an
        SCM value can be regarded as a pointer to a cell on the heap.

        * gc.h: Added declaration of scm_cellp.

        * gdb_interface.h: New file: The GDB interface header from the GDB
        distribution.

        * gdbint.c: New file: GDB interface.

        * gdbint.h: New file: GDB interface.

        * libguile.h: Added #include <libguile/gdbint.h>.

        * init.c (scm_boot_guile): Added scm_init_gdbint.

        * Makefile.in: Added gdb_interface.h, gdbint.[hc].
        Added -I.. to INCLUDE_CFLAGS (otherwise the include files won't be
        found if object files and source are kept separate).

Wed Sep  4 14:35:02 1996  Jim Blandy  <jimb@floss.cyclic.com>

        * feature.h, feature.c: Use PROTO macro, instead of #if __STDC__.

Wed Sep  4 01:30:47 1996  Jim Blandy  <jimb@totoro.cyclic.com>

        * configure.in: Don't substitute the values of TCL_SRC_DIR and
        TK_SRC_DIR; they're not relevant any more.

        * Makefile.in (CC): Don't list -Wall here; it's a GCC-specific flag.
        * configure.in: Instead, put it in CFLAGS here, iff we're using GCC.

Wed Sep  4 00:55:49 1996  Jim Blandy  <jimb@floss.cyclic.com>

        * PLUGIN/guile.config (xtra_cflags): Include .. in the header
        search path, so we can find the <libguile/MUMBLE.h> headers.

        * Makefile.in (ancillary): List aclocal.m4, for 'make dist'.

        * Makefile.in (ALL_CFLAGS): Don't mention CFLAGS here; it's
        implicit in the .c.o rule.
        (.c.x): Don't mention ALL_CFLAGS here; its value is included in
        $(CC) already.

        Put the library path in a header file, instead of passing it on
        the command line in every compilation.
        * Makefile.in (libpath.h): New target.
        (feature.o): Depend on libpath.h.
        (clean): Delete libpath.h.
        (ALL_CFLAGS): Don't use -DLIBRARY_PATH here.  Instead ...
        * feature.c: ... #include "libpath.h" here.
        * .cvsignore: Ignore libpath.h.

        Don't install the unwashed masses of Guile header files in the
        main #include path; put most of them in a subdirectory called
        'libguile'.  This avoids naming conflicts between Guile header
        files and system header files (of which there were a few).
        * Makefile.in (pkgincludedir): Deleted.
        (innerincludedir): New variable; this and $(includedir) are enough. 
        (INCLUDE_CFLAGS): Search for headers in "-I$(srcdir)/..".
        (installed_h_files): Divide this up.  Now this variable lists
        those header files which should go into $(includedir) (i.e. appear
        directly in the #include path), and ...
        (inner_h_files): ... this new variable says which files appear in
        a subdirectory, and are referred to as <libguile/mumble.h>.
        (h_files): List them both.
        (install): Create innerincludedir, not pkgincludedir.  Put
        the installed_h_files and inner_h_files in their proper places.
        (uninstall): Corresponding changes.
        * alist.h, append.h, arbiters.h, async.h, boolean.h, chars.h,
        continuations.h, debug.h, dynwind.h, error.h, eval.h, fdsocket.h,
        feature.h, fports.h, gc.h, genio.h, gsubr.h, hash.h, init.h,
        ioext.h, kw.h, libguile.h, list.h, markers.h, marksweep.h,
        mbstrings.h, numbers.h, options.h, pairs.h, ports.h, posix.h,
        print.h, procprop.h, procs.h, ramap.h, read.h, root.h,
        sequences.h, smob.h, socket.h, srcprop.h, stackchk.h, stime.h,
        strings.h, strop.h, strorder.h, strports.h, struct.h, symbols.h,
        tag.h, throw.h, unif.h, variable.h, vectors.h, version.h,
        vports.h, weaks.h: Find __scm.h in its new location.
        * __scm.h: Find scmconfig.h and tags.h in their new locations
        (they're both "inner" files).

Tue Sep  3 20:27:35 1996  Jim Blandy  <jimb@floss.cyclic.com>

        * Makefile.in (.c.x): Remove duplicate use of $(ALL_CFLAGS).

Tue Sep  3 19:53:00 1996  Jim Blandy  <jimb@totoro.cyclic.com>

        * posix.c: Doc fixes.

Mon Sep  2 15:22:40 1996  Jim Blandy  <jimb@totoro.cyclic.com>

        * socket.c: Don't include a prototype for inet_aton; just use a
        K&R style declaration, to avoid warnings but minimize the chance
        of conflicts with the system.

        On NextStep, <utime.h> doesn't define struct utime, unless we
        #define _POSIX_SOURCE before #including it.
        * aclocal.m4 (GUILE_STRUCT_UTIMBUF): New test.
        * acconfig.h: New comment text for above CPP symbol.
        * configure.in: Call it.
        * posix.c: #define _POSIX_SOURCE if it seems necessary.

        * configure.in (AC_CHECK_HEADERS): Include sys/utime.h and utime.h
        in the list.
        * posix.c: Check HAVE_SYS_UTIME_H and HAVE_UTIME_H, instead of
        testing for __EMX__.

        * posix.c: #include <libc.h>, if it exists.

        * posix.c: Cast the return result to GETGROUPS_T, not gid_t; we
        don't even know if the latter exists.

        * posix.c (s_sys_setpgid, s_sys_setsid, s_sys_ctermid,
        s_sys_tcgetpgrp, s_sys_tcsetpgrp): Renamed from s_setpgid,
        s_setsid, s_ctermid, s_tcgetpgrp, s_tcsetpgrp, for consistency.

        * posix.c (R_OK, W_OK, X_OK, F_OK): #define these if the system's
        header files don't.
        (scm_init_posix): Use them when initializing the Scheme constants
        of the same name.

Fri Aug 30 16:01:30 1996  Jim Blandy  <jimb@floss.cyclic.com>

        * Makefile.in (libdir, includedir, bindir): Use the
        autoconf-supplied values, instead of deriving them ourselves.
        (pkgincludedir, datadir, pkgdatadir): New variables.
        (install, uninstall): Put the header files in a special
        subdirectory, not in the main search path.

        * Makefile.in (ALL_CFLAGS): Provide the proper value for
        LIBRARY_PATH --- use $(pkgdatadir) instead of $(libdir). 

        * Makefile.in (IMPLPATH): Deleted; never used.
        
        * Makefile.in (TCL_SRC_DIR, TK_SRC_DIR): Deleted; we don't depend
        on the Tcl/Tk source any more.
        (INCLUDE_CFLAGS): Remove references to the above.

        * Makefile.in (version.o): Corrected dependencies.

Thu Aug 29 23:06:19 1996  Thomas Morgan  <tmorgan@gnu.ai.mit.edu>

        * libguile.h: #include "version.h"

        * init.c (scm_boot_guile): Call scm_init_version.
        * gscm.c (gscm_run_scm): Call scm_init_version.

        * configure.in (GUILE_MAJOR_VERSION, GUILE_MINOR_VERSION,
        GUILE_VERSION): AC_DEFINE these.
        (acconfig.h): #undef the above symbols.

        * Makefile.in (libobjs): Add version.o.
        (installed_h_files): Add version.h.
        (c_files): Add version.c.
        (gen_c_files): Add version.x.
        (version.o): New rule.
        (alist.o, append.o, appinit.o, arbiters.o, async.o, boolean.o,
        chars.o, continuations.o, dynwind.o, eq.o, error.o, eval.o,
        fdsocket.o, feature.o, files.o, filesys.o, fports.o, gc.o,
        genio.o, gsubr.o, hash.o, hashtab.o, init.o, kw.o, list.o, load.o,
        mallocs.o, markers.o, marksweep.o, mbstrings.o, numbers.o,
        objprop.o, pairs.o, ports.o, posix.o, print.o, procprop.o,
        procs.o, ramap.o, read.o, root.o, scmsigs.o, sequences.o,
        simpos.o, smob.o, socket.o, stackchk.o, stime.o, strings.o,
        strop.o, strorder.o, strports.o, struct.o, symbols.o, tag.o,
        throw.o, unif.o, variable.o, vectors.o, version.o, vports.o,
        weaks.o): Add version.h to dependency lists.
        (markers.o): Remove duplicate rule.

        * version.h: New file.

        * version.c: New file.

Thu Aug 29 15:21:39 1996  Jim Blandy  <jimb@totoro.cyclic.com>

        * symbols.c (scm_strhash): scm_downcase is now a function, not an
        array; use it appropriately.  Since GCC is quite happy to
        subscript functions, it never warned us about this; we should use
        -Wpointer-arith in the future.  I guess we never tested
        case-insensitivity.

Wed Aug 28 18:52:22 1996  Jim Blandy  <jimb@totoro.cyclic.com>

        * socket.c: Doc and copyright fixes.

Sat Aug 24 05:29:19 1996  Mikael Djurfeldt  <mdj@woody.nada.kth.se>

        * debug.c: Fixed and improved gdb support.

Fri Aug 23 18:00:16 1996  Mikael Djurfeldt  <mdj@woody.nada.kth.se>

        * socket.c: Added declaration of inet_aton to avoid compiler
        warning.  (Hope this solution is correct.)

        * stime.c: Added declaration of ftime.  (This is missing in
        Solaris 2 headers.)

Fri Aug 23 02:03:32 1996  Gary Houston  <ghouston@actrix.gen.nz>

        * configure, scmconfig.h.in: Updated, using autoconf and autoheader.

        * Makefile.in (c_files): add strerror.c.

        * strerror.c: new file from Emacs' sysdep.c.
        maybe configure should also check for sys_errlist.

        * configure.in (AC_REPLACE_FUNCS): add strerror.

Fri Aug 23 03:02:46 1996  Mikael Djurfeldt  <mdj@woody.nada.kth.se>

        * debug.c (scm_init_debug): Added initialization for
        scm_evaluator_traps.

        * debug.h, debug.c: Various name changes.
        (Mostly prefixing with SCM_.)  Renamed "debug-options" -->
        "debug-options-interface".  See commentary in options.c.

        * options.h, options.c: Options now have documentation strings.
        Also added a long explanatory commentary.
        
        * eval.c, print.h, print.c, read.h, read.c: Modifications to
        run-time options.

        * gscm.c, init.c, root.c, throw.c: Bug fixes:
        last_debug_info_frame is now updated in all cases.

        * __scm.h, stackchk.h, stackchk.c: Guile now performs stack
        checking.

Thu Aug 22 17:34:17 1996  Mikael Djurfeldt  <mdj@woody.nada.kth.se>

        * __scm.h: SCM_STACK_LIMIT removed (now a run-time option).
        Added option STACK_CHECKING.

Tue Aug 20 18:48:40 1996  Mikael Djurfeldt  <djurfeldt@nada.kth.se>

        * Makefile.in: Added {debug,options,srcprop}.{h,c}
        
        * __scm.h: Removed symbols for debugging support.

        * acconfig.h: Added symbols for debugging support.

        * configure.in: Added user option for debugging support.
        --enable-debug will include the debugging code into libguile.a.

        * continuations.c (scm_make_cont): Enlarged the #if 0 around
        scm_relocate_chunk_to_heap.
        
        * debug.c: New file: low-level debugging support.  It also
        includes support for debugging with gdb.  (The extensions to gdb
        are written by Per Bothner at Cygnus.)

        * debug.h: New file: low-level debugging support.

        * eval.c: scm_m_set and SCM_IM_SET no longer supports multiple
        argument pairs.  Extensive modifications to the debugging
        evaluator.  Added "SECTION:" commentaries to clarify what happens
        when, during double compilation.  Renamed EVALIMP --> EVALIM.
        Renamed EVAL --> XEVAL.  Removed function evalcar.  Defined
        evalcar to scm_eval_car.  Added explanation of "EVAL" symbols to
        the beginning of the file.  New procedure: scm_unmemocopy.
        Added some global state variables needed by the debugging
        evaluator: scm_ceval_ptr, last_debug_info_frame, debug_mode,
        check_entry, check_apply, check_exit, debug_options and
        evaluator_traps.  New acro: undefine.
        
        * eval.h: Renamed EVAL --> XEVAL.

        * gc.c (scm_init_storage): Renamed scm_make_weak_hash_table
        --> scm_make_weak_key_hash_table.
        
        * init.c (scm_restart_stack, scm_boot_guile): Added initialization
        of SCM_DFRAME.  Added calls to scm_init_{debug,options,srcprop}.
        
        * libguile.h: Conditionally include debug.h

        * objprop.c (scm_object_properties, scm_set_object_properties_x):
        scm_object_properties shouldn't return handle.  `handle' now gets
        initialized in scm_set_object_properties_x.  scm_object_properties
        doesn't any longer create an entry in scm_object_whash.
        
        * options.c: New file: handling of run time options.
        
        * options.h: New file: handling of run time options.

        * posix.c (scm_getpgrp): Cast pointer to getpgrp.
        
        * print.c: New procedure: scm_print_options

        * print.h: Defines for print options.
        
        * read.c: New procedure: scm_read_options

        * read.h: Defines for reader options.
        
        * root.h: Added scm_source_whash among scm_sys_protects.

        * srcprop.c: New file: source properties.
        
        * srcprop.h: New file: source properties.
        
        * throw.c (jbsmob): Jump buffers are now correctly allocated.
        (Bug found by A. Green.)

        * weak.c: Renamed scm_weak_hash_table --> scm_weak_key_hash_table.
        
        * weak.h: Renamed scm_weak_hash_table --> scm_weak_key_hash_table.

Thu Aug 15 02:05:14 1996  Jim Blandy  <jimb@totoro.cyclic.com>

        * libguile.h: #include "objprop.h"; I guess this was forgotten.

        * init.c (scm_boot_guile): Don't call scm_init_rgx; it's a plugin,
        and should be called by the final client.

Wed Aug 14 21:41:37 1996  Jim Blandy  <jimb@totoro.cyclic.com>

        * gc.h: Use the PROTO macro when declaring functions.
        * gc.c: Use the PROTO macro when declaring static functions.
        Remove the CPP hair around function definitions.

        * gc.c (scm_init_storage): Initialize scm_asyncs.

        * libguile.h: #include "__scm.h" before testing the STDC_HEADERS
        preprocessor symbol; "__scm.h" is where it might get #defined.
        * __scm.h: Similar: #include <scmconfig.h> before testing
        HAVE_LIMITS_H.

        * __scm.h: It's HAVE_LIMITS_H, not HAVE_LIMITSH.
        
Fri Aug  9 11:09:28 1996  Jim Blandy  <jimb@totoro.cyclic.com>

        * init.c (scm_boot_guile): Add init_func argument; call
        (*init_func) instead of calling scm_appinit; it's ucky to
        hard-code names for the user's procedures.
        * init.h (scm_boot_guile): Adjust declaration.

        * __scm.h (PROTO): New macro, for declaring functions with
        prototypes.

        * init.h (scm_start_stack, scm_restart_stack): Use PROTO;
        eliminate all the __STDC__ conditionals.
        (scm_boot_guile): Add declaration.
        * init.c (scm_start_stack, scm_restart_stack, scm_boot_guile):
        Remove __STDC__ conditionals around function definitions; the
        declarations in init.h will provide the same information, more
        usefully.

        * __scm.h (SCM_SYSMISSING): When we don't have ENOSYS, don't
        complain about it in the error message; the error message is
        adequate without that note, and there's nothing the user can do
        about it.

Wed Aug  7 14:14:46 1996  Jim Blandy  <jimb@totoro.cyclic.com>

        * Makefile.in (ancillary): Drop def.sed.

        * posix.c (scm_init_posix): Use numeric values, rather than
        CPP symbols, when defining the scheme values R_OK, W_OK, X_OK, and
        F_OK.  The symbols aren't available on some systems, and I'm
        pretty sure their values are fixed by common widespread practice.
        * ioext.c (scm_init_ioext): Code here defined them too; remove it.

        More functions unavailable on some systems.
        * configure.in (AC_CHECK_FUNCS): Add ctermid, setpgid, setsid,
        tcgetpgrp, tcsetpgrp, and waitpid to the list of functions to
        check for.
        * configure, scmconfig.h.in: Updated, using autoconf and autoheader.
        * posix.c (scm_sys_ctermid, scm_sys_setpgid, scm_sys_setsid,
        scm_sys_tcgetpgrp, scm_sys_tcsetpgrp, scm_sys_waitpid): Put the
        bodies of these functions in "#ifdef HAVE_MUMBLE" clauses, with a
        stub that signals an error as the #else.

        * Makefile.in (ancillary): Drop acconfig-1.5.h; add acconfig.h.

Wed Aug  7 06:28:42 1996  Gary Houston  <ghouston@actrix.gen.nz>

        * Fixes motivated by Petr Adamek <adamek@mit.edu>:

        * unif.c: include ramap.h.

        * read.c (endif): case_insensative_p renamed case_insensitive_p.

        * ramap.h: rename scm_array_copy prototypes to scm_array_copy_x.

        * ports.c: include sys/ioctl.h.

        * scmconfig.h.in: add HAVE_SYS_IOCTL_H.

        * configure.in: check for sys/ioctl.h.

        * ports.c: include <malloc.h> not "malloc.h".

        * mallocs.c: include <malloc.h> not "malloc.h", likewise for unistd.h.

        * fports.c: remove ttyname and tmpnam declarations.

        * posix.c: fewer ttyname declarations.

        * fports.c: include <string.h> not "string.h".

        * init.c, ioext.c: include string.h and unistd.h.

        * gc.c: include <malloc.h> not "malloc.h", likewise for unistd.h.

        * async.c, strings.h, strports.c, struct.c, symbols.c, feature.c,
        genio.c, simpos.c, vports.c: include string.h.

        * socket.c, fdsocket.c: include string.h only if HAVE_STRING_H.

        * fdsocket.c (getsockopt, setsockopt): change type of optlen from 
        scm_sizet to int.
        (scm_addr_buffer_size): change type from scm_sizet to int.
        (accept, getsockname, getpeername, recvfrom): change type of tmp_size
        from scm_sizet to int.

        * error.c: include unistd.h.

        * __scm.h: (SCM_SYSMISSING): another version in case ENOSYS isn't
        defined.

        * Makefile.in: remove references to .hd, .cd suffix and __scm.hd.

        * __scm.hd, def.sed: deleted.

Tue Aug  6 14:49:08 1996  Jim Blandy  <jimb@totoro.cyclic.com>

        Changes for NeXT, suggested by Robert Brown.
        * configure.in: Call AC_TYPE_MODE_T.
        (AC_CHECK_HEADERS): Add libc.h, to get more prototypes on the
        NeXT.  Put header file list in alphabetical order.
        * configure, scmconfig.h.in: Regenerated.
        * filesys.c [HAVE_LIBC_H]: #include <libc.h>.

        * filesys.c [HAVE_STRING_H]: #include <string.h>, to get prototype
        for strerror.
        
        * acconfig.h: New file, providing documentation for the CPP
        symbols defined in configure.in
        * acconfig-1.5.h: Removed; superceded by the above.

Sat Aug  3 01:27:14 1996  Gary Houston  <ghouston@actrix.gen.nz>

        * ioext.c (scm_sys_fdopen): fix the port-table assignment.

        * fports.c (scm_open_file): don't return #f, throw error.

        * ioext.c (fileno): renamed from %fileno.
        (soft-fileno): deleted.

        * ports.c (scm_port_revealed): don't need to check for -1 from
        scm_revealed_count.
        (scm_set_port_revealed_x): return unspecified, not #f.

        * ioext.c (primitive-move->fdes): return #t or #f, not 1 or 0.

        * fdsocket.c: getsockopt, setsockopt: use HAVE_STRUCT_LINGER.

        * scmconfig.h.in: add HAVE_STRUCT_LINGER.

        * configure.in: check for struct linger, set HAVE_STRUCT_LINGER.

Thu Aug  1 02:58:39 1996  Jim Blandy  <jimb@totoro.cyclic.com>

        * filesys.c, posix.c: #include <sys/types.h> before <sys/stat.h>.
        This is necessary on Ultrix, and doesn't hurt portability. 

        * Makefile.in (dist-dir): New target, implementing a new dist system.
        (installed_h_files): Put in alphabetical order.
        Remove duplicate entries for markers.h and unif.h.
        (c_files): Remove duplicate entries for markers.c.
        (ancillary): Renamed from anillery; all uses changed.  Remove
        PLUGIN; it's a directory, and needs special treatment in dist-dir.
        Remove all the ../doc/* files; doc/Makefile.in handles that.

        * Makefile.in (libobjs): Remove duplicate entry for markers.o.

        * Makefile.in (.c.x): Compensate for Ultrix's broken Bourne shell:
        every if must have an else, or else the whole command has a
        non-zero exit code whenever the if's condition is false.

Thu Aug  1 08:22:24 1996  Gary Houston  <ghouston@actrix.gen.nz>

        * posix.c: include string.h.

Wed Jul 31 23:43:05 1996  Gary Houston  <ghouston@actrix.gen.nz>

        * numbers.c: rename %expt -> $expt, %atan2 -> $atan2, as it must
        have been once.

        * posix.c, ioext.c, socket.c, fdsocket.c, files.c, filesys.c, simpos.c:
        Remove leading % from scheme names.
        Do not return error values, call SCM_SYSERROR or similar.

        * __scm.h (SCM_SYSERROR, SCM_SYSMISSING): new macros.

Wed Jun 12 00:28:31 1996  Tom Lord  <lord@beehive>

        * struct.c (scm_init_struct): new file.

Fri Jun  7 14:02:00 1996  Tom Lord  <lord@beehive>

        * list.c (scm_list_tail): list-cdr-ref is the same as list-tail.
        (scm_list_head): added list-head for rapidly chopping argument
        lists off of longer lists (and similar).

Tue Jun  4 09:40:33 1996  Tom Lord  <lord@beehive>

        * objprop.c (scm_object_property): assq the cdr of the whash
        handle for obj, not the handle itself.

Mon Jun  3 17:19:30 1996  Tom Lord  <lord@beehive>

        * gc.c (scm_mark_weak_vector_spines): Mark the spines (alists) of
        weak hash tables last of all marking to avoid an obscure gc bug.
        WARNING: circular lists stored in a weak hash table will hose us.

Fri May 24 09:53:39 1996  Tom Lord  <lord@beehive>

        * vectors.c (scm_vector_move_left_x, scm_vector_move_right_x):
        new functions similar to scm_substring_move_left_x and
        scm_substring_move_right_x.

Wed May 22 20:07:01 1996  Tom Lord  <lord@beehive>

        * init.c (scm_boot_guile): prevent gc with scm_block_gc not
        scm_gc_heap_lock!

Wed May 15 16:13:29 1996  Tom Lord  <lord@beehive>

        * ports.c (scm_unread_char): scm_gen_ungetc as a scheme procedure.

Thu May  9 09:33:17 1996  Tom Lord  <lord@beehive>

        * strports.c (scm_strprint_obj): convenience function.  C for
        (lambda (obj) (call-with-output-string (lambda (p) (write obj p))))

        * guile-{tcl,tk}.[ch], events.[ch], keysyms.[ch], tcl-channels.[ch]
                removed to a separate library

        * init.c (scm_boot_guile): copied from guile-tcl.c.
        Initialization specific to tcl interpreters removed.

Wed May  8 15:07:37 1996  Tom Lord  <lord@beehive>

        * ports.c (scm_ports_prehistory): size malloced here doesn't
        matter so long as it is non-0 (got rid of "* 4").

Tue May  7 11:43:37 1996  Tom Lord  <lord@beehive>

        * gscm.h: gscm_mkarray eliminated (presumably was not being used
        since its definition was bogus).

Mon May  6 13:02:56 1996  Tom Lord  <lord@beehive>

        * mallocs.[ch]: back again (for rx at least).

Wed Apr 17 08:54:20 1996  Tom Lord  <lord@beehive>

        * ports.c: removed functions relating to the mapping between ports
        and descriptors.   (That stuff is unix-specific and should be collected
        in a separate library).

        * ramap.c (scm_array_copy): return #<unspecified> not #<undefined>.
        (Tom Mckay@avanticorp.com)

Mon Apr 15 14:16:55 1996  Tom Lord  <lord@beehive>

        * gc.c (scm_gc_sweep): Immediates in weak vectors were not
        handled correctly (SCM_FREEP was applied to them) -- test for
        NIMP.  Keys in weak hash tables were spuriously (though harmlessly)
        being overwritten with #f.   (brown@grettir.bibliotech.com)

Tue Apr  2 22:25:00 1996  Tom Lord  <lord@beehive>

        * gc.c (scm_unhash_name): new procedure, unhash-name, flushes glocs
        for a specific symbol or for all symbols.

Mon Apr  1 10:34:55 1996  Tom Lord  <lord@beehive>

        * gc.c (scm_gc_mark): mark weak hash tables correctly (was getting weak
        keys and weak values confused).

Thu Mar 14 22:20:20 1996  Tom Lord  <lord@beehive>

        * list.c (scm_last_pair): map '()=>'()

Wed Mar 13 16:43:34 1996  Tom Lord  <lord@beehive>

        * pairs.c, hashtab.c, list.c, alist.c append.c, sequences.c:
        Generalized assoc and hash-table functions.
        Factored pairs.c into multiple files.

Fri Mar  8 14:44:39 1996  Tom Lord  <lord@beehive>

        * gscm.c (gscm_run_scm): got rid of objprop.

Fri Mar  1 10:39:52 1996  Tom Lord  <lord@beehive>

        * genio.c (scm_getc): 
        NOTE: fgetc may not be interruptable.

        * procprop.c (scm_stand_in_scm_proc): 
        NOTE: don't use a alist here.
        (scm_set_procedure_properties_x): fix type checking throughout this file.

        * gc.c (scm_gc_sweep): free heap segments with free, not must_free.

        * ports.c (scm_remove_from_port_table): adjust scm_mallocated
        after freeing part of the port table.

Thu Feb 29 16:21:17 1996  Tom Lord  <lord@beehive>

        * strports.c (scm_mkstrport): 
        * vports.c (scm_make_soft_port): allocate a port table entry 
        (possibly triggering gc) before setting the tag of the corresponding
        ports handle.

        * pairs.c (scm_delq_x): never throw an error.

        * vectors.c (scm_make_vector): made the default vector fill argument
        into '() (much more useful than the previous value, "#unspecified")

Mon Feb 26 17:19:09 1996  Tom Lord  <lord@beehive>

        * ports.c (scm_add_to_port_table): Added fields
        to port table entries: file_name, line_num, col.
        Update these in open_file, gen_getc and gen_ungetc.
        Added procedures to access those fields.

Sun Feb 25 00:10:36 1996  Tom Lord  <lord@beehive>

        * procs.c (scm_make_subr_opt): new entry point for making
        anonymous subrs.

Sat Feb 24 17:11:31 1996  Tom Lord  <lord@beehive>

        * gc.h: SCM_STACK_GROWS_UP is now set by autoconf.

Fri Feb 23 10:26:29 1996  Tom Lord  <lord@beehive>

        * numbers.c (scm_exact_p): This function no longer
        implements "integer?".

Thu Feb 22 20:56:16 1996  Tom Lord  <lord@beehive>

        * gc.c (scm_gc_end): simulate a signal at the end of each GC.
        (scm_gc_stats): return an assoc of useful data.  Replaces "room"
        and the stats reporting formerlly built into repl.

        * repl.[ch]: removed.  
        GC statistics keeping moved to gc.c.
        Other statistics keeping can be done from Scheme.
        REPLS are now written in Scheme.

Wed Feb 21 10:28:53 1996  Tom Lord  <lord@beehive>

        * cnsvobj.c (gscm_is_gscm_obj): new file for old functions (icky
        conservatively marked objects).

        * throw.c (scm_ithrow): Unwind up to the right catch during a throw!

        * error.c (scm_init_error): init system_error_sym here, not in repl.c.

        * feature.c (scm_compiled_library_path): moved here from repl.c.
        This file is for stuff relating specifically to Scheme libraries
        like slib.

        * eval.c (scm_m_define): don't give warning about redefinition, don't
        check verbosity.  

        NOTE: this should throw a resumable exception with parameters --
        the name, the top-level env, the variable, the definition, #t/#f: redefining builtin?

        * repl.c (scm_gc_begin/end): don't print a message, don't check verbosity.

        * error.c: scm_warn eliminated.

        * read.c (scm_lreadr): extra right paren gets an error, not a warning.

        * repl.c, marksweep.c, gc.c (various): 
        lose exit_report, growth_mon.

        * gscm.c: got rid of verbosity functions.

Tue Feb 20 00:19:10 1996  Tom Lord  <lord@beehive>

        * throw.c (scm_ithrow): guard against the bad-throw hook changing
        between the call to procedurep and use.

        * error.c (scm_everr): 
        * gc.c (fixconfig): 
        * gsubr.c (scm_make_gsubr): use exit, not scm_quit.  still wrong, 
        but less so.

        * strports.c: don't reveal the port's string to the caller
        because it changes size.

        (stputc stwrite): check/change the strings length with interrupts
        blocked.

        * objprop.c (scm_set_object_property_x &c): use the generic
        hashing functions and be threadsafe.

        * eval.c (scm_unmemocar): do this operation in a thread-safe way.
        (per suggestion jaffer@gnu.ai.mit.edu).

        * mbstrings.c (scm_multi_byte_string): guard against argument list
        changing length.

        * strings.c (scm_make_string): loop cleanup

        * unif.c (scm_vector_set_length_x): scm_vector_set_length_x no longer
        a scheme function.

        * weaks.c (scm_weak_vector): guard against argument list 
        changing length.

        * variable.c (scm_builtin_variable): check for/make a built-in
        variable automicly.

        * vectors.c (scm_vector): while filling the new array,
        guard against a list of fill elements that grows after
        the vector is allocated.

        * hashtab.c -- new file: general hash table
        functions.  hash, hashq, hashv, hashx.

        * tags.h: made wvect an option bit of vector.

Mon Feb 19 09:38:05 1996  Tom Lord  <lord@beehive>

        * symbols.c: made the basic symbol table operations atomic.

        * root.c &c.: collected stack-specific global state.
        linum/colnum etc *should* be port-specific state.

        * struct.c (scm_init_struct): init the first struct type during
        initialization to fix a race condition.

        * continuations.c (scm_dynthrow): pass throwval in the 'regs'
        object, not in a global.
        (suggested by green@cygnus, jaffer@gnu.ai.mit.edu)

        * throw.c (_scm_throw): Pass throwval on the stack, not in a global
        (suggested by green@cygnus, jaffer@gnu.ai.mit.edu)

        * *.[ch]: namespace cleanup.  Changed all (nearly) exported CPP
        and C symbols to begin with SCM_ or scm_.

Sun Feb 18 15:55:38 1996  Tom Lord  <lord@beehive>

        * gsubr.c (scm_gsubr_apply): statically allocate the
        array of arguments (bothner@cygnus.com).

Sat Feb 17 20:20:40 1996  Tom Lord  <lord@beehive>

        * scmsigs.c: Simplified to use async rountines.

        * async.c: New support for interrupt handlers.

Thu Feb 15 11:39:09 1996  Tom Lord  <lord@beehive>

        * symbols.c (scm_string_to_symbol et al.): number of tweaky changes to 
        set the multi_byte flag correctly in symbols.  This is wrong.
        intern_obbary_soft and msymbolize should take an extra parameter.
        Also, weird multibyte symbols don't print correctly.
        The weird symbol syntax is also a bit bogus (emacs doesn't quite
        cope).

Tue Feb 13 11:39:37 1996  Tom Lord  <lord@beehive>

        * symbols.c (scm_string_to_obarray_symbol): obarray == #f means
        use the system symhash.   == #t means create an uninterned symbol.

Wed Feb  7 09:28:02 1996  Tom Lord  <lord@beehive>

        * strings.c (scm_make_shared_substring): build'em.
        It might better to keep a table of these and use one
        less cons-pair per shared-substring.

Tue Feb  6 17:45:21 1996  Tom Lord  <lord@beehive>

        * strings.c (scm_string_shared_substring): create shared 
        substrings.  (Doesn't handle mb strings yet).

        * mbstrings.c (scm_print_mb_string): handle RO strings.

        * print.c (scm_iprin1): print substrings as their non-substring
        counterparts (dubious).

        * marksweep.c (scm_gc_mark scm_gc_sweep): handle RO and MB
        strings.

        * hash.c (scm_hasher): hash RO and MB strings as bytestrings.

        * eval.c (SCM_CEVAL): self-evaluate RO and MB strings.

        * eq.c (scm_equal_p): handle RO and MB strings.

        * symbols.c (scm_string_to_symbol): 
        (scm_string_to_obarray_symbol): 
        * strop.c (scm_i_index): 
        (scm_i_rindex): 
        (scm_string_null_p): 
        (scm_string_to_list): 
        * strings.c (scm_string_length): 
        (scm_string_ref): 
        (scm_substring): 
        (scm_string_append): 
        * simpos.c (scm_system): 
        (scm_getenv): 
        * fports.c (scm_open_file): 
        * strorder.c (scm_string_equal_p): 
        (scm_string_ci_equal_p): 
        (scm_string_less_p): 
        (scm_string_ci_less_p): 
        * pairs.c (scm_obj_length): 
        * mbstrings.c (scm_multi_byte_string_length): 

        Use RO string macros for RO strings.

Tue Jan 30 09:19:08 1996  Tom Lord  <lord@beehive>

        * Makefile.in (CFLAGS ALL_CFLAGS): be more standard.

        * strop.c (scm_i_rindex, scm_i_index): Don't use the BSD functions
        index/rindex.   Do handle embedded \000 characters.

Sun Jan 28 13:16:18 1996  Tom Lord  <lord@beehive>

        * error.c (def_err_response): (int)scm_err_pos => (long)scm_err_pos
        Eliminate a (presumed) warning on some systems.

        * gscm.c (gscm_run_scm): SCM_INIT_PATH => GUILE_INIT_PATH
        (Mikael Djurfeldt <mdj@nada.kth.se>)

Sat Jan 27 12:36:55 1996  Tom Lord  <lord@beehive>

        * eval.c (scm_map): added argument type checking.
        (kawai@sail.t.u-tokyo.ac.jp)

        * gscm.c (gscm_set_procedure_properties_x): parameter "new" => "new_val"
        for C++. (Seth Alves <alves@gryphon.com>)

        (gscm_cstr):  uses an uninitialized local variable causing
        segv. (kawai@sail.t.u-tokyo.ac.jp)


        * lvectors.c (scm_get_lvector_hook): 
        In guile-ii, the lvector code was broken.  It was fixed in guile-iii.
        It seems to me like if it is broken again in guile-iv...Here is a patch.
        "!       || (LENGTH (keyvec) == 0))"
        (From: Mikael Djurfeldt <mdj@nada.kth.se>)


        * gscm.c (gscm_sys_default_verbosity): 
        incorrectly declared for non-__STDC__
        (Tom_Mckay@avanticorp.com)

        * ports.c (scm_setfileno): Tweak the macro a bit
        to make it easier to port to systems that use
        more than a single structure field to hold a descriptor.

        * debug.c (change_mode): Avoid GNUCism "int foo[n];"
        Give a warning, not an error, for unrecognized modes.

        * eval.c (SCM_CEVAL): 
                static char scm_s_for_each[]; 
                static char scm_s_map[];
        not needed.

        * strings.c (scm_string_p): 
               static char s_string[];  
       (see next entry)

        * struct.c (scm_sys_struct_set_x): 
               static char s_sys_make_struct[];
               static char s_sys_struct_ref[];
               static char s_sys_struct_set_x[];
        Rearrange code to eliminate those forward decls for the sake of
        broken compilers.

        * variable.c (make_vcell_variable): static char s_make_variable[];
        isn't needed.

        * fports.c (scm_port_mode): 
               chars modes[3] = "";
        to
               chars modes[3];
               modes[0] = '\0';
        (Tom_Mckay@avanticorp.com)


        * pairs.c (scm_set_cdr_x): non-__STDC__ declaration of
        scm_cons2(), scm_acons(), and scm_set_cdr_x() missing semicolon
        (Tom_Mckay@avanticorp.com)

        * numbers.c (scm_num_eq_p): Non-__STDC__ declaration of 
        scm_num_eq_p() was scm_equal_p().
        (Tom_Mckay@avanticorp.com)

        * symbols.c (msymbolize): "CHARS(X) = " => "SETCHARS..."
        (Tom_Mckay@avanticorp.com)

Fri Jan 26 14:03:01 1996  Tom Lord  <lord@beehive>

        * weaks.c (scm_make_weak_vector): "VELTS(X) =" => "SETVELTS..."
        (Tom_Mckay@avanticorp.com)

        * strop.c (scm_substring_fill_x): 
        Non-__STDC__ declaration of scm_substring_fill_x() missing semicolon
        (Tom_Mckay@avanticorp.com)

        * eval.c (SCM_APPLY): variables "debug_info" -> dbg_info.
        Works around a compiler bug on some machines. (Tom_Mckay@avanticorp.com)

        * _scm.h (CxR functions): #define CxR SCM_CxR => #define CxR(X) SCM_CxR(X)
        Works around a compiler bug on some machines. (Tom_Mckay@avanticorp.com)

        * lvectors.c (scm_lvector_set_x): avoid VELTS (VELTS (...)[..]) which
        can turn into an obscure gc bug.

        * chars.c (scm_char_p): fixed PROC call.

        * gscm.h (gscm_vset): use scm_vector_set_x not (the missing)
        scm_vector_set.

Tue Jan 23 13:29:40 1996  Tom Lord  <lord@beehive>

        * elisp.c (new file): dynamic scoping and other bits for
        elisp.   Don't use this yet unless you specificly want to 
        hack on elisp emulation.

        * dynwind.c (scm_dowinds): When entering or leaving a dynamic
        scope created by scm_with_dynamic_bindings_operation_x, swap
        the bindings of that scope with the corresponding globals. 

        * continuations.c (scm_make_cont): when a continuation is captured,
        relocate the continuation stack chunks registered on the wind chain
        to the heap.

Sun Jan 21 19:31:17 1996  Tom Lord  <lord@beehive>

        * eval.c (SCM_CEVAL): if the function position evaluates
        to a macro, process it accordingly.  (Previously, macros were
        handled only if the function position was a symbol naming a 
        variable bound to a macro).

Sat Jan 20 23:21:37 1996  Tom Lord  <lord@beehive>

        * eval.c (scm_m_set): allow multi-variable set! like
        (set! x 1 y 2 z 3).

Wed Dec  6 02:40:49 1995  Tom Lord  <lord@beehive>

        * ports.h fports.c vports.c marksweep.c gc.c strports.c: moved the
        STREAM of ports into the port table and replaced it with a
        port-table index.

        * repl.c (iprin1): added tc7_mb_string -- same as tc7_string.

        * marksweep.c (scm_gc_mark): added tc7_mb_string -- same as tc7_string.

        * mbstrings.c (new file): functions on multi-byte strings.

        * tags.h (scm_typ7_string, scm_typ7_mb_string): added a tag
        for multi-byte strings. Moved the string tag.

        * chars.h chars.c repl.c (many functions): made scm_upcase and
        scm_downcase functions that are safe for extended character sets.

        Changed the range of integer->char.

        Changed the type of SCM_ICHR.

Tue May 16 17:49:58 1995  Mikael Djurfeldt  <mdj@sanscalc.nada.kth.se>
  
        * guile.c: Changed init file name from "SCM_INIT_PATH" to
          "GUILE_INIT_PATH"
 
Sun Aug  6 15:14:46 1995  Andrew McCallum  <mccallum@vein.cs.rochester.edu>

        * guile.c (gscm_is_gscm_type): New function.  (Without this how will we
        know that it's safe to pass an object to gscm_get_type?)
        (gscm_get_type): Fix tyop in error message.

        * variable.c (scm_variable_ref): fixed assertion test.
        (Robert STRANDH <strandh@labri.u-bordeaux.fr>)

        * gscm.h: fixed several prototypes, notably gscm_vref.
        Add gscm_is_eq and temporarily commented out gscm_eq (see
        the note in gscm.h near gscm_eq if this change effects your
        code). 
        (Reported by Mark Galassi <rosalia@sstcx1.lanl.gov>)

        * pairs.c (scm_obj_length): see next entry.

        * gscm.h (gscm_obj_length): A way to get an integer
        length for lists, strings, symbols (treated as strings),
        and vectors.  Returns -1 on error.

        * eq.c (scm_equal_p): fixed smob case.
        (William Gribble <grib@arlut.utexas.edu>)

        * Makefile.in (X_CFLAGS): defined.
        (William Gribble <grib@arlut.utexas.edu>)

        * gscm.h (gscm_2_double): provided now 
        (reported by Mark Galassi <rosalia@sstcx1.lanl.gov>)

Tue Jun 13 01:04:09 1995  gnu
        * Vrooom!