Thu Apr  6 15:01:29 1995  Tom Lord  <lord@x1.cygnus.com>

Wed Apr  5 14:32:51 1995  Gary Houston  <ghouston@actrix.gen.nz>

	* unix.c, ioext.c, posix.c, sys.c: Scheme name changes, 
	  semantic cleanups, the port table, missing system calls 
	  and coding cleanups from ghouston@actrix.gen.nz

Thu Mar 16 14:37:38 1995  Tom Lord  <lord@x1.cygnus.com>

	* guile.c: fixed the gcc-specific definition of the macro "AT(x)".

	* guile.c (gscm_init_from_fn): Parameterize what init functions
	get called (see guile_ks, below).

	* guile-mini.c (guile_mini): a minimalist alternative to guile_ks.

	* guile-ks.c (guile_ks): factor out the call to optional inits to
	a separate file so you can link against libguile without getting
	the kitchen sink.

	* Ginit.scm (try-load of "ScmInit.scm"): Be robust in the absense
	of a binding for the environment varialbe HOME.  Try
	 (getpw (geteuid)) or just use "/".
	

Thu Mar  9 15:35:20 1995  Tom Lord  <lord@x1.cygnus.com>

	* gmain.c (main): Print additional error message if init file
	  can't be opened.

	* guile.c (initialize_gscm): Report an error if the 
	  init file can't be opened.

Thu Mar 23 23:22:59 1995  Aubrey Jaffer  (jaffer@jacal)

	* scm.texi (I/O-Extensions): Finished.

	* Init.scm (scm:load): `loading' messages now indented.

Sat Mar  4 20:58:51 1995  Aubrey Jaffer  (jaffer@jacal)

	* scm.texi: documentation finished for "posix.c" and "unix.c".

	* posix.c (scm_getgroups): added.

	* posix.c (makfrom0str): According to glibc.info, some field in
	structures like pwent may have NULL pointers.  Changed makfrom0str
	to return BOOL_F in this case.

Thu Mar  2 12:52:25 1995  Aubrey Jaffer  (jaffer@jacal)

	* time.c: CLKTCK set from CLOCKS_PER_SEC, if available.  Metaware
	HighC ported.

	* scm.h: USE_ANSI_PROTOTYPES now controls prototypes (was
	__STDC__).  This allows an overly fussy compiler to still have
	__STDC__.

	From: dorai@ses.com (Dorai Sitaram)
	* ioext.c (l_utime): include files fixed for __EMX__

Sun Feb 26 23:46:18 1995  Tom Lord  <lord@x1.cygnus.com>

	* repl.c (scm_app_wdr): Like scm_apply, but takes an error function.
	  The caller's continuation is never captured or escaped.
	  The error function is invoked as with scm_cwdr.

Sun Feb 26 21:03:04 1995  Aubrey Jaffer  (jaffer@jacal)

	* sys.c (gc_mark gc_sweep): tc7_ssymbol now gets GCed because it
	gets used for non-GCed strings in scm_evalstr scm_loadstr.
	(mkstrport cwos cwis): changed so caller's name is passed into
	mkstrport().

	* repl.c
	(scm_eval_string scm_evalstr scm_load_string scm_loadstr): added
	for easier C to scheme callbacks.
	(loadport): variable added so lreadr() and flush_ws()
	increment linum only when reading from the correct port.
	(def_err_response): now handles ARGn for argument numbers > 5 and
	unknown position arguments.

	* dynl.c: Dynamic Linking now sets and restores *load-pathname*
	around the init_ call.

Sat Feb 25 11:03:56 1995  Aubrey Jaffer  (jaffer@jacal)

	* scm.c (lsystem getenv softtype ed vms_debug): moved from scl.c.
	(add_feature): moved from repl.c.
	(features): init table removed (caused multiple symbols).

Fri Feb 24 23:48:03 1995  Aubrey Jaffer  (jaffer@jacal)

	* scm.c (scm_init_extensions COMPILED_INITS): Added so that
	statically linked, compiled code can be initialized *after* most
	of Init.scm has loaded.

Wed Feb 22 15:54:01 1995  Aubrey Jaffer  (jaffer@jacal)

	* subr.c (append): Added check for bad arguments and fixed errobj.

Sun Feb 19 01:31:59 1995  Aubrey Jaffer  (jaffer@jacal)

	* ioext.c (exec execp): changed so that 2nd arguments is argv[0]
	(like posix) and renamed to execl and execlp.
	(execv execvp): added.

Sat Feb 11 17:30:14 1995  Aubrey Jaffer  (jaffer@jacal)

	* ioext.c (lexec): moved from repl.c and scm.c.
	(lexecp i_exec l_putenv): added.

	* posix.c (open_pipe l_open_input_pipe l_open_output_pipe
	prinpipe):  moved from ioext.c.
	(l_fork): added.

Fri Feb 10 10:50:03 1995  Aubrey Jaffer  (jaffer@jacal)

	* scl.c (num2long long2num): moved here from subr.c.
	(num2ulong): fixed (< to >=) bug.

	* unif.c (aset array2list array_ref cvref): uniform integers and
	unsigned integer arrays now handle full size integers (and
	inexacts) using num2long, num2ulong, long2num, and ulong2num when
	INUMS_ONLY is not defined.

	* scmfig.h (INUMS_ONLY): defined when INUMs are the only numbers.

Wed Feb  8 17:57:26 1995  Tom Lord  (lord@x1.cygnus.com)

	* Ginit.scm (stand-alone-repl): Use new function (rooted-repl)
	  (rooted-repl):  new function

Tue Jan 31 16:46:26 1995  Tom Lord  (lord@x1.cygnus.com)

	* repl.c (lreadr): compare string constant names
	  in a case insensative way.

	  (scm_lread): Take an optional parameter CASEP.
	  If specified and not #f, then symbols are read
	  in a case sensative way.

	  If not specified, the state variable default_case_i is checked
	  (a C int, either 0 or 1).  The state variable hasn't been
	  exposed and so is constant and depends on compile-time flags --
	  but in the future it might be made more explicit if there is a
	  need.

Sun Jan 29 23:22:40 1995  Aubrey Jaffer  (jaffer@jacal)

	* scm.texi (Overview): scm.1 converted to texinfo format and
	incorporated.

Sat Jan 28 23:11:40 1995  Tom Lord  (lord@x1.cygnus.com)

	* repl.c (compiled-library-path): return the value of the
	  compile-time cpp macro "LIBRARY_PATH" or #f.

	* Ginit.scm: use the above path to find slib on unix.
	  This solution should be generalized.

Fri Jan 27 19:58:27 1995  Tom Lord  (lord@x1.cygnus.com)

	* sys.c (gc_sweep): Fixed a gc bug that caused circular free-lists
	  resulting in Cells that thought they were free long after they
	  were allocated for some nefarious purpose or other.

	* Makefile.in (manifest): ship all pieces of the info manual.
	  Typos fixes from ghouston.

Thu Jan 26 01:52:00 1995  Tom Lord  <lord@x1.cygnus.com>

	From: cessu@cs.hut.fi (Kenneth Oksanen)

	* configure.in: 
	  AC_CHECK_LIB(nsl, gethostent)
	  AC_CHECK_LIB(ucb, bzero)
	  AC_CHECK_LIB(socket, socket)
	  AC_CHECK_LIB(bsd, bzero)


 	From: brent@jade.ssd.csd.harris.com (Brent Benson)

	* gmain.c: line 31: In ANSI C, string literals cannot span multiple
	  source lines.

  	* guile.c: line 592: The two cases in the ifdef are reversed, AT(X)
	  should expand to nothing if you are *not* using GNUC.

	* ioext.c: line 29: On my system it is necessary to 
	  include <unistd.h> *before* <sys/stat.h> in order to 
	  have the correct types defined.

	* ioext.c: line 194: Declaration of popen conflicts with my system's
	  popen() defined in <unistd.h>.  Let the header file provide the
	  prototype!!

Sun Jan 22 11:13:58 1995  Aubrey Jaffer  (jaffer@jacal)

	* scm.texi (Internals): code.doc converted to texinfo format.
	Much added and reorganized.  code.doc removed.

Thu Jan 19 00:40:11 1995  Aubrey Jaffer  (jaffer@jacal)

	* subr.c (logbitp logtest): added.

Mon Jan 16 01:42:20 1995  Tom Lord  <lord@x1.cygnus.com>

	* repl.c (scm_repl): takes two arguments now (prompt and top-level).
	Callable from Scheme.

	* sys.c (scm_init_storage): only use stdin if scm_take_stdin is true.
	Otherwise, use an empty string port. If using stdin, make it 
	unbuffered.

Sun Jan 15 21:51:37 1995  Tom Lord  <lord@x1.cygnus.com>

	* sys.c (scm_mkarray, scm_free_array, mark_arrays): support for 
	C programs.  malloc/free style interface to allcoating
	protected storage of type SCM*.

Sun Jan 15 17:49:43 1995  Tom Lord  (lord@x1.cygnus.com)

	* guile.c: new file.  Friendly C interface for Guile.
	  (see file GUILE)

	* repl.c (scm_cwdr): added call-with-dynamic-root (see scm.texi).

Sat Jan 14 23:35:21 1995  Tom Lord  (lord@x1.cygnus.com)

	* repl.c, subr.c: re-arrangement, commenting
	  of source in preparation for pulling repls apart
	  for libguile.

Wed Jan 11 14:45:17 1995  Aubrey Jaffer  (jaffer@jacal)

	* scl.c (num2ulong): checks for bignum sign and magnitude added.

	* subr.c (logand logior logxor lognot): lognot restriction to
	INUMs removed.  Logand, logior, and logxor now will work for up to
	32 bit signed numbers.

Tue Jan 10 13:19:52 1995  Aubrey Jaffer  (jaffer@jacal)

	* repl.c (def_err_response): Circuitous call to quit() replaced
	with exit(EXIT_FAILURE);
	(everr): Now calls def_err_response() in interrupt frame if
	errjmp_bad or there are dynwinds to do.  This prevents silent
	failure in batch mode.


Mon Jan  9 00:12:14 1995  Aubrey Jaffer  (jaffer@jacal)

	* repl.c (handle_it): Now discards possibly used top freelist cell
	for GC safety.  Also now just punts if errjmp_bad.

	* scm.texi: converted from MANUAL.  GUILE documentation merged in.

Sat Jan  7 13:51:04 1995  Miles Bader  (miles@eskimo.com)

	* mrequire.scm: New file: Wrapper for slib require/provide that
	makes it modular (that is, each slib package is loaded into its
	own module, and sees only other modules that it requires).

	* defmod.scm: Allow use-interface in the default module.

	* libguile.scm: Put symbols common to both guile and scm
	interfaces into the internal interface `EXTRA' (which is included
	by both).  Other random shuffling, mostly to make slib happy.

	* modops.scm (extend-interface, export-interface, export): Add
	another operation type, #f, which turns off automatic exporting of
	the current source interface when finishing up with it.  This is
	used by export-interface to prevent trying to export all symbols.

	* modops.scm (import): No longer signal an error when trying to
	export a whole module, as we want to do this sometimes.

	* Ginit.scm: No longer try to load require.scm, or depend on it;
	In the case of getopt, we just load it manually.  Also make
	defmacro module-safe.

Sat Jan  7 01:54:11 1995  Tom Lord  <lord@x1.cygnus.com>

	* sys.c (scm_intern_obarray_soft): Reserve room for symbol slots.

	* sys.c (scm_makstr, scm_makfromstr): added an extra parameter SLOTS.
	The parameter means:
		0: same as the old behavior
		1: not useful
		> 1: allocate SLOTS - 1 extra slots in the string storage.

	The base address of SLOTS, an array of SCM, is at SLOTS(obj).
	This is for symbol slots, and later for procedure slots.
	If you use this in the constructor for your new type (usually
	done by creating a string and then invoking SETLENGTH to change
	its type), you are responsible for making sure slot contents
	are properly gc'ed.

	Callers of these were fixed as well.

Tue Jan  3 14:30:34 1995  Miles Bader  (miles@eskimo.com)

	* modops.scm, extlibs.scm, libguile.scm, defmod.scm: New files:
	    These implement the user-level module system.

	* sys.c (scm_sym2vcell): Add another argument: definedp, which is
	    passed as additional argument to the lookup-thunk (if any).
	    If this argument is BOOL_T, this lookup is for a define (which
	    has somewhat different semantics for modules); otherwise it
	    should be satisfied with an existing variable.  If the thunk
	    returns BOOL_F (meaning there was no such variable), sym2vcell
	    returns BOOL_F as well.
	* eval.c (scm_lookupcar, scm_m_define): Use the new sym2vcell param.
	* variable.c (scm_builtin_var): Use the new sym2vcell param.

	* eval.c (scm_top_level_env): New function: return an environment
	    using the given top-level-lookup thunk.
	* eval.c (scm_eval2): Use scm_top_level_env.
	* eval.c (scm_eval): Use an env with a top-level lookup thunk from
	    scm_top_level_lookup_thunk_var (aka *top-level-lookup-thunk*).
	* eval.c (scm_neval): New function: just like scm_eval, but may
	    destroy its argument.  Known in scheme as eval!.

	* repl.c (scm_repl, scm_tryload, lreadr): Use scm_neval, not eval_3.

	* Ginit.scm (make-module): Use the new definition of top-level thunks.
	* Ginit.scm (set-current-module): Set *top-level-lookup-thunk* too.
	* Ginit.scm: Trash all the repl stuff; we just use the C repl now.
	    Load the user module system.

	* Makefile.in: Install the user-module implementation files.

Mon Jan  2 16:27:25 1995  Miles Bader  (miles@eskimo.com)

	* Ginit.scm (repl:repl): Have the guile repl redefine try-load
	   instead of load, as this is the SCM primitive.
	(module-for-each): Write module-for-each.
	(module-search): Make this recurse into each module use-list
	   entry, as per the low-level module spec.
	(define-macro): Make this function usable by modules that don't
	   have access to the internals of the guile module.

Sun Jan  1 22:30:25 1995  Tom Lord  <lord@x1.cygnus.com>

	* repl.c (scm_iprin1), subr.c (scm_lock_vector, scm_unlock_vector,
	scm_lvector_ref, scm_lvector_set):

	Added locked vectors.  See N

Sat Dec 31 15:45:22 1994  Miles Bader <miles@eskimo.com>

	* Ginit.scm: 
	Add define-macro, delq!.

	Add a module print-function, and some new name fields 
	to the module that the modops code uses to make modules 
	print nicely (e.g., #<interface guile/module 7a89c>)


	* eval.c(ceval): Here's a patch that makes closures & subrs 
	self-evaluating.  


Wed Dec 28 00:31:22 1994  Tom Lord  <lord@cygnus.com>

	* scm.c (raise): use kill not raise, since it is more portable.

Wed Dec 21 05:18:47 1994  Tom Lord  <lord@x1.cygnus.com>

	* eval.c (scm_eval2): Two argument eval.  The 
	second argument is #f or a proc returning a variable.

Fri Dec  9 00:40:26 1994  Tom Lord  <lord@x1.cygnus.com>

	* eval.c (scm_fasl_eval): eval without copying the source form.
	This is just a temporary hack.

Sun Dec  4 21:50:37 1994  Tom Lord  <lord@x1.cygnus.com>

	* eval.c (scm_ceval): Added special forms LITERAL-VARIABLE-SET!
	and LITERAL-VARIABLE-REF.  The first argument of each is a 
	variable object (see variable.c).  The second argument
	of set! is an expression.  They do what you'd expect.
	-SET! returns UNSPECIFIED.

	Note that one can not read a form which uses literal-variable* 
	correctly because there is no way to read a variable object.
	These forms exist for the sake of the module system.

Fri Dec  2 19:52:40 1994  Tom Lord  (lord@x1.cygnus.com)

	* subr.c (string->obarray-symbol, intern-symbol, unintern-symbol,
	          symbol-set!, symbol-binding)
	  Multiple obarrays.

	* variable.c (scm_make_variable, scm_variable_{ref,set}
	  Implemented variables.  Variables are anonymous
	  objects holding one settable value.

Wed Nov 30 04:31:18 1994  Tom Lord  (lord@x1.cygnus.com)

	* *.[ch]: renamed all global identifiers to have the prefix scm_.

	* sys.c (gc_sweep, scm_mark_locations, scm_init_heap):
	  
	   Modified gc to allow objects of any multiple of sizeof(CELLPTR).
	   In addition, each heap segment gets to specify a freelist (which
	   may be shared).
	  
	   new function: scm_alloc_obj
	   new vars: scm_heap_table (replaces hplims)
	             scm_n_heap_segs (replaces (hpims_ind / 2))

Thu Oct 27 12:57:02 1994  Aubrey Jaffer  (jaffer@jacal)

	From: Jerry D. Hedden <hedden@esdsdf.dnet.ge.com>
	* ioext.c: conditional code for vms and version (3.6) of Aztec C.
	* pi.scm ((e digits)): Modified 'bigpi' for slight speed
	improvement.  Added function to calculate digits of 'e'.

Wed Oct 26 11:22:05 1994  Aubrey Jaffer  (jaffer@jacal)

	From: Gary Houston <ghouston@actrix.gen.nz>
	* scl.c (round): Now rounds as described in R4RS.

	* test.scm (test-inexact): test cases for round.

Tue Oct 25 00:02:27 1994  Aubrey Jaffer  (jaffer@jacal)

	* sys.c	(grow_throw lthrow dynthrow): now pass arrays, check
	for adequate growth, and clear out register windows (on sparc).

Mon Oct 24 01:05:34 1994  Aubrey Jaffer  (jaffer@jacal)

	* ioext.c (ttyname fileno): added.

Sat Oct 22 12:12:57 1994  Aubrey Jaffer  (jaffer@jacal)

	* unix.c (symlink readlink lstat): added.

	* scmfig.h repl.c sys.c (IO_EXTENSIONS): flag removed.

	* ioext.c (read-line read-line! file-position, file-set-position
	reopen-file open-pipe opendir readdir rewinddir closedir chdir
	umask rename-file isatty? access chmod mkdir rmdir stat utime
	raise): moved from "repl.c" and "sys.c".

Fri Oct 21 21:19:13 1994  Aubrey Jaffer  (jaffer@jacal)

	From: Radey Shouman <shouman@ccwf.cc.utexas.edu>
	* unif.c (ra2contig): now has a second parameter to indicate
	whether copying is necessary or not.  Eliminates gratuitous copy
	by UNIFORM-ARRAY-READ! when called with a noncontiguous array.

	(array_map): more liberal check on when ARRAY-MAP! can use
	array-ified asubrs.

Thu Oct 20 18:00:35 1994  Aubrey Jaffer  (jaffer@jacal)

	* sys.c (opendir readdir rewinddir closedir reopen-file): added
	under IO_EXTENSIONS.

Wed Oct 19 14:18:26 1994  Aubrey Jaffer  (jaffer@jacal)

	* eval.c (badargsp): added under ifndef RECKLESS to check @apply
	and apply() arg counts.

Tue Oct 18 00:02:10 1994  Aubrey Jaffer  (jaffer@jacal)

	* unix.c (mknod acct nice sync): added.

	* socket.c (socket bind! gethost connect! listen! accept): added.

	* time.c (utime): added under IO_EXTENSIONS.

Mon Oct 17 23:49:06 1994  Aubrey Jaffer  (jaffer@jacal)

	* sys.c (getcwd umask access chmod mkdir rmdir): added
	under IO_EXTENSIONS.

	* scm.c (l_pause): added if SIGALRM defined.
	(l_sleep): added if SIGALRM not defined.

	* scl.c (num2ulong): added.  Used in "time.c"

Sun Oct 16 22:41:04 1994  Aubrey Jaffer  (jaffer@jacal)

	* sys.c (access chmod): Posix access added under IO_EXTENSIONS.

Fri Oct 14 09:45:32 1994  Aubrey Jaffer  (jaffer@jacal)

	* posix.c (chown link pipe waitpid, kill, getpw, getgr, get*id,
	set*id): added.

	* time.c (l_raise l_getpid): added
	* subr.c (ulong2big):
	* scl.c (ulong2num): useful routines for system call data
	conversion moved from "time.c".

Thu Sep 22 14:48:16 1994  Aubrey Jaffer  (jaffer@jacal)

	* subr.c (big2inum): (more accruately) renamed from big2long.

Tue Sep  6 22:22:16 1994  Aubrey Jaffer  (jaffer@jacal)

	From: rshouman@hpcf.cc.utexas.edu (Radey Shouman)
	Date: Mon, 29 Aug 1994 11:36:46 +0600
	* unif.c: This is a large patch, but also a bit larger than it
	appears -- I moved a few function definitions around to eliminate
	gratuitous forward references.

	* unif.c repl.c (raprin1): Combined print routine for arrays with
	that for uves.

	* unif.c (UNIFORM-VECTOR-READ! and -WRITE): work with general
	arrays, by copying when necessary, renamed them to
	UNIFORM-ARRAY-READ! and -WRITE.

	* unif.c (ARRAY-CONTENTS): Generalized so that it returns a 1-d
	array even when the stride in the last dimension is greater than
	one, gave it an optional second argument STRICT, which makes it
	behave as it did before, returning an array/vector only if the
	contents are contiguous in memory.

	* unif.c (ARRAY-CONTIGUOUS?) Eliminated. Instead, use
		(lambda (ra) (array? (array-contents ra #t)))

	* unif.c code.doc (ramapc): unrolls arrays mapping into one loop
	if possible, to make this quick, changed the format of the array
	CAR, now uses one bit to indicate that an array is contiguous --
	this still allows a ridiculous number of dimensions.

	* scm.h (DSUBRF): dsubrs are mapped directly, to allow this I
	moved the typedef for dsubr and #define for DSUBRF to scm.h

	* unif.c (ARRAY-MAP!) taught something about subrs, now most subrs
	may be mapped without going through apply(), saving time and
	reducing consing.  +, -, *, /, =, <, <=, >, and >= are mapped
	directly as special cases -- for uniform arrays this is nearly as
	fast as the equivalent C, and doesnt' cons.  I've made sure that
	+, -, *, and / vectorize on the CRAY, this may be wasted effort
	but the effort is not great.

	* unif.c (ARRAY-COPY!) now copies many arrays of differing types
	to each other without going through the aref/aset, e.g. float ->
	double, double -> complex, integer -> float ...  This should make
	array type coercions for arithmetic faster.

	* unif.c (TRANSPOSE-ARRAY) Added, which returns a shared array
	that is the transpose of its first argument.  I think this does
	what an APL:TRANSPOSE would.

	* unif.c (ENCLOSE-ARRAY) Added, this returns an array that looks
	like an array of shared arrays, the difference being that the
	shared arrays are not actually allocated until referenced.
	Internally, the contents of an enclosed array is another array.
	The main reason for this is to allow a reasonably efficient
	implementation of APL:COMPRESS, EXPAND, and INDEXING.  In order to
	actually make an array of shared arrays, just use ARRAY-COPY!.

	* unif.c (cvref): Created internal version of aref(), cvref() that
	doesn't do error checking; Thus speeding things up.  Profiling of
	SCM running array code revealed that aref() was taking a
	surprising fraction of the CPU time

	TO DO:

	The mechanism for looking up the vectorized functions is a little
	kludgy, I was tempted to steal some of the CAR of the subr type to
	encode an offset into a table of vectorized functions, but this
	would make it more likely that dynamically loaded subrs lose thier
	names.

	It is almost possible to write APL:+ and friends now, it is just
	necessary to figure out the appropriate type of the returned array
	and allocate it, and to promote scalar arguments to arrays (with
	increments 0).

	This doesn't include vectorized REAL-PART, IMAG-PART,
	MAKE-RECTANGULAR ...

	I think some C support for APL:REDUCE and maybe INNER-PRODUCT will
	be needed for a reasonably fast APL.scm

	unif.c is getting quite big, time to split it up?


Mon Sep  5 22:44:50 1994  Aubrey Jaffer  (jaffer@jacal)

	* Init.scm repl.c (quit): code was not using return values
	correctly.

Sun Aug 21 01:02:48 1994  Aubrey Jaffer  (jaffer@jacal)

	* record.c (init_record): remaining record functions moved into C
	code.
	* eval.c sys.c: compiled closures now conditional under CCLO.

Sat Aug 20 23:03:36 1994  Aubrey Jaffer  (jaffer@jacal)

	From: rshouman@chpc.utexas.edu (Radey Shouman)
	* eval.c (ceval apply):
	* sys.c (makcclo): tc7_cclo, compiled closures, now supported.
	* record.c (init_record): C implementation of slib "Record"s using
	CCLO.
	* scm.h subr.c (QUOTIENT MODULO REMAINDER): fixes a bug for
	bignums with DIGSTOOBIG defined.  Also, changed the return type of
	longdigs() to void, since that value is no longer used anywhere.

Mon Aug  1 11:16:56 1994  Aubrey Jaffer  (jaffer@jacal)

	* time.c (curtime): replaces get-universal-time.  Other time
	functions removed (SLIB support more complete).

	* subr.c (divbigbig): fixed (modulo -2177452800 86400) => 86400
	bug.  Also added to test.scm.

Sun Jul 24 16:09:48 1994  Aubrey Jaffer  (jaffer@jacal)

	* dynl.c (init_dynl): *feature* dld:dyncm added for dynamically
	(ldso) linked libc.sa and libm.sa (under Linux).

Fri Jul 15 12:53:48 1994  Aubrey Jaffer  (jaffer@jacal)

	* unif.c (array-fill!): bug with increment in default clause fixed.
	Fast string support added.

	From: rshouman@chpc.utexas.edu (Radey Shouman)
	* unif.c (array-fill! array-for-each): bug fixes.

Sun Jul 10 01:51:00 1994  Aubrey Jaffer  (jaffer@jacal)

	* scm.c (run_scm init_scm): "-a" heap allocation argument supported.

	* Makefile (proto.h): removed.

	From: Drew Whitehouse, Drew.Whitehouse@anu.edu.au
	* scm.h (P): Conditionalized ANSI'fied version of the scm.h.

Sun Jun 26 12:41:59 1994  Aubrey Jaffer  (jaffer@jacal)

	* Link.scm (usr:lib lib): Now checks for shared libraries
	(lib*.sa) first.

Thu Jun 23 19:45:53 1994  Aubrey Jaffer  (jaffer@jacal)

	* scl.c scm.c: Support for compilation under Turbo C++ for Windows
	 (system and exec disabled) added under C flag "_Windows".

Sat Jun 18 11:47:17 1994  Aubrey Jaffer  (jaffer@jacal)

	* test.scm ((test-delay)): added.
	((test-bignum)): added and called automatically if bignums
	suported.  test-inexact called automatically if inexacts
	supported.

Mon Jun  6 09:26:35 1994  Aubrey Jaffer  (jaffer@jacal)

	* Init.scm (trace untrace): moved to SLIB/trace.scm.

Thu May 12 00:01:20 1994  Aubrey Jaffer  (jaffer@jacal)

	* Link.scm: Autoload for hobbit now does (provide 'hobbit).  This
	allows hobbit to know if it is self compiling (although reloads of
	hobbit will not be quite right).
	((compile file . args)): removed.

	* makefile.unix (proto.h): removed.

	* Transcen.scm: compile-allnumbers HOBBIT declaration added.
	Init.scm will now load compiled Transcen.o.

	* scm.h: HOBBIT section removed.

	* README (SLIB): Now strongly recommends getting SLIB and lists
	ftp sites.

	* eval.c (m_delay): fixed bug with multiple sets of (delay x).

Thu Apr 28 22:41:41 1994  Aubrey Jaffer  (jaffer@jacal)

	* unif.c (makflo): shortcut for single precision float arrays
	added.

Fri Apr 15 00:54:14 1994  Aubrey Jaffer  (jaffer@jacal)

	From: rshouman@chpc.utexas.edu (Radey Shouman)
	* unif.c: no longer uses pointer comparisons in loops.  Should
	fix problems on 8086 processors.
	* unif.c (make_sh_array): Fixes MAKE-SHARED-ARRAY so that shared
	arrays with only 1 element in some direction may still be
	ARRAY-CONTIGUOUS?
	(uve_write uve_read): Fixes bug in UNIFORM-ARRAY-WRITE,
	UNIFORM-ARRAY_READ!.  Now they do the right thing for shared
	bit-arrays not starting at the beginning of their contents vector.
	(array_contents ARRAY-SIMPLE?): ARRAY-CONTENTS may now return a
	shared, contiguous, 1-d array, instead of a vector, if the array
	cannot access all of the contents vector.  ARRAY-SIMPLE? removed.
	(array-fill!): a replacement and generalization of
	UNIFORM-VECTOR-FILL!.
	(raequal): Combines with uve_equal(), providing also ARRAY-EQUAL?
	ARRAY-EQUAL? is equivalent to EQUAL? if all its arguments are
	uniform vectors or if all are arrays.  It differs from EQUAL? in
	that a shared, 1-d array may be ARRAY-EQUAL? to a uniform vector.
	  for example
	  (define sh (make-shared-array '#(0 1 2 3) list '(0 1))) ==> #1(0 1)
	  (equal? '#(0 1) sh)       ==> #F
	  (array-equal? '#(0 1) sh) ==> #T
	(list2ura): Combines list2uve() and list2ura().

Thu Apr 14 23:26:54 1994  Aubrey Jaffer  (jaffer@jacal)

	* time.c (LACK_FTIME LACK_TIMES): defined for vms.

Mon Apr  4 10:39:47 1994  Aubrey Jaffer  (jaffer@jacal)

	* eval.c (copytree): now copies vectors as well.

	* repl.c (quit): now accepts #t and #f values.

Sun Apr  3 23:30:14 1994  Aubrey Jaffer  (jaffer@jacal)

	* repl.c (repl): call to my_time() moved to not include READ time.

	* time.c (mytime): now prefers to use times() over clock().
	Compilation constant CLOCKS_PER_SEC doesn't scale when a binary is
	moved between machines.

Thu Mar 31 16:22:53 1994  Aubrey Jaffer  (jaffer@jacal)

	* Init.scm (*SCM-VERSION*): added.

	* Makefile (intro): Added message for those who just make.
	Cleaned up and reorganized Makefile.

	* patchlvl.h (PATCHLEVEL): removed.  Whole version now just in
	SCMVERSION.

Wed Mar 23 00:09:51 1994  Aubrey Jaffer  (jaffer@jacal)

	From: rshouman@chpc.utexas.edu (Radey Shouman)
	* repl.c (iprin1): Characters higher than 127 print as
	#\<octal-number>.

	* Init.scm ((read:array digit port)): added.  Most # syntax
	handled in read:sharp.

	* unif.c (clist2uve clist2array): removed.

Fri Mar 11 15:10:53 1994  Radey Shouman  (rshouman@chpc.utexas.edu)

	* sys.c (sfgetc): can now return EOF.

Mon Mar  7 17:07:26 1994  Aubrey Jaffer  (jaffer@jacal)

	* patchlvl.h (SCMVERSION): 4e0

	* scmfig.h: was config.h (too generic).

	* scm.c (main run_scm) repl.c (repl_driver init_init): now take
	initpath argument.  IMPLINIT now used in scm.c

Sun Feb 27 00:27:45 1994  Aubrey Jaffer  (jaffer@jacal)

	* eval.c (ceval m_cont IM_CONT): @call-with-current-continuation
	special form for tail recursive call-with-current-continuation
	added.  call_cc() routine removed.

Fri Feb 25 01:55:06 1994  Aubrey Jaffer  (jaffer@jacal)

	* eval.c (ceval m_apply IM_APPLY apply:nconc-to-last): @apply
	special form for tail-recursive apply added.  ISYMs reactivated.

Mon Feb 21 14:42:12 1994  Aubrey Jaffer  (jaffer@jacal)

	* crs.c (nodelay): added.  In NODELAY mode WGETCH returns
	eof-object when no input is ready.

	* Init.scm ((read:sharp c port)): defined to handle #', #+, and
	#-.

	* repl.c (lreadr): Now calls out to Scheme function read:sharp
	when encountering unknown #<char>.

Tue Feb 15 01:08:10 1994  Aubrey Jaffer  (jaffer@jacal)

	From: Shiro KAWAI <kawai@sail.t.u-tokyo.ac.jp>
	* eval.c (ceval apply): under flag CAUTIOUS, checks for applying
	to non-lists added.

Sat Feb 12 21:23:01 1994  Aubrey Jaffer  (jaffer@jacal)

	* sys.c (sym2vcell intern sysintern): now use internal strhash().

	* scl.c sys.c (hash hashv hashq strhash()): added.

Sat Feb  5 01:24:35 1994  Aubrey Jaffer  (jaffer@jacal)

	* scm.h (ARRAY_NDIM): #define ARRAY_NDIM NUMDIGS changed to
	#define ARRAY_NDIM(x) NUMDIGS(x) to correct problem on Next.

Fri Feb  4 23:15:21 1994  Aubrey Jaffer  (jaffer@jacal)

	From: rshouman@chpc.utexas.edu (Radey Shouman)
	* unif.c: 0d arrays added.  Serial array mapping functions and
	ARRAY-SIMPLE? added.

Thu Feb  3 12:42:18 1994  Aubrey Jaffer  (jaffer@jacal)

	* scm.h (LENGTH): now does unsigned shift.

Wed Feb  2 23:40:25 1994  Aubrey Jaffer  (jaffer@jacal)

	* Link.scm (*catalog*): catalog entries for db (wb),
	turtle-graphics, curses, regex, rev2-procedures, and
	rev3-procedures added.

Sun Jan 30 19:25:24 1994  Aubrey Jaffer  (jaffer@jacal)

	From: rshouman@chpc.utexas.edu (Radey Shouman)
	* sys.c eval.c setjump.h setjump.s (longjump setjump): full
	continuations now work on Cray YMP.

Thu Jan 27 01:09:13 1994  Aubrey Jaffer  (jaffer@jacal)

	* dynl.c MANUAL Init.scm (init_dynl): dynamic linking modified for
	modern linux.

Sat Jan 22 17:58:55 1994  Aubrey Jaffer  (jaffer@jacal)

	From: ucs3028@aberdeen.ac.uk (Al Slater)
	* makefile.acorn repl.c (set_erase): Port to acorn archimedes.
	This uses Huw Rogers free unix function call library for the
	archimedes - this is very very widely available and should pose no
	problem to anyone trying to find it - its on every archimedes ftp
	site.

	From: hugh@cosc.canterbury.ac.nz (Hugh Emberson)
	* dynl.c Link.scm: Dynamic Linking with SunOS.

Thu Jan  6 22:12:51 1994    (jaffer at jacal)

	* sys.c (gc_mark mark_locations): now externally callable.

Sun Jan  2 19:32:59 1994    (jaffer at jacal)

	From: fred@sce.carleton.ca (Fred J Kaudel)
	* unif.c (ra_matchp ramapc): patch to unif.c avoids two problems
	(K&R C does not allow initialization of "automatic" arrays or
	structures).  This was not use in 4d2 or previously, and the
	following patch ensures that such initialization only occurs for
	ANSI C compilers (Note that K&R C compilers need to explicitly
	assign the values).

Sat Dec 18 23:55:30 1993    (jaffer at jacal)

	* scm.1 scm.doc (FEATURES): improved and updated manual page.

	* repl.c (BRACKETS_AS_PARENS): controls whether [ and ] are read
	as ( and ) in forms.

Wed Dec  8 23:13:09 1993    (jaffer at jacal)

	From: rshouman@chpc.utexas.edu (Radey Shouman)
	* unif.c: More array fixes and functions.

Tue Dec  7 00:44:23 1993    (jaffer at jacal)

	* dynl.c (dld_stub): removed since dld is working better on Linux.

Wed Dec  1 15:27:44 1993    (jaffer at jacal)

	* scm.h (SNAME): explicit cast added to get rid of compiler
	warnings.

	From: bh@anarres.CS.Berkeley.EDU (Brian Harvey)
	* repl.c (repl) output newlines when more than one form on a line
	for Borland C.

	From: rshouman@chpc.utexas.edu (Radey Shouman)
	* unif.c: More array fixes and documentation.

Mon Nov 29 01:06:21 1993  Aubrey Jaffer  (jaffer at montreux)

	From: rshouman@chpc.utexas.edu (Radey Shouman)
	* unif.c: More array functions (need documentation).

Sun Nov 28 01:34:22 1993    (jaffer at jacal)

	* scm.h (SNAME): returns a pointer to nullstr if offset is 0.

	* subr.c eval.c (make_synt make_subr): now check that offset from
	heap_org hack works for each subr.  If not, 0 is used.

	* Link.scm (compile-file): compiles SCM file to object suitable
	for LOAD.

	* Link.scm: initialization file created with Scheme code for
	compilation and	linking.  LOAD now automatically loads SCM object
	files.

	* dynl.c Init.scm: dynamic linking now works under DLD on Linux.
	Wb, crs, and sc2 can by dynamically loaded.

Thu Nov 25 22:58:36 1993    (jaffer at jacal)

	* sys.c (ltmpnam): return value of mktemp call tested in accord
	with HP-UX documentation (returns "" on error).

	* config.h (SYSCALLDEF): removed.  Macro I/O calls (getc, putc)
	replaced with function versions.  Control-C interrupts should work
	while pending input on all systems again.

Tue Nov 23 01:18:35 1993    (jaffer at jacal)

	From: dorai@cs.rice.edu (Dorai Sitaram)
	* repl.c sys.c time.c config.h: MWC (Mark Williams C) support.

Sun Nov  7 10:58:53 1993    (jaffer at jacal)

	From: "Greg Wilson" <Greg.Wilson@cs.anu.edu.au>
	* scm.c config.h (TICKS ticks tick-interrupt): if TICKS is
	#defined, ticks and tick-interrupt work like alarm and
	alarm-interrupt, but with units of evaluation rather than units of
	time.

Mon Nov  1 18:47:04 1993    (jaffer at jacal)

	* unif.c (uniform-vector-ref => array-ref): integrated arrays
	with uniform-vectors.  Strings, vectors, and uniform-vectors
	now just special case of arrays (to the user).

Fri Oct 29 01:26:53 1993    (jaffer at jacal)

	* unif.c (rasmob tc16_array): arrays are now a smob.

Thu Oct 28 01:21:43 1993    (jaffer at jacal)

	* sys.c repl.c (igc gc_start): GC message gives reason for GC.

Wed Oct 27 10:03:00 1993    (jaffer at jacal)

	* config.h (SICP): flag makes (eq? '() '#f) and changes other
	things in order to make SCM more compatible with Abelson and
	Sussman's book.

	* sys.c (gc_mark gc_sweep mark_locations): GC bug fixed.  GC from
	must_malloc would collect the tc_free_cell already allocated.

	* sys.c setjump.h (must_malloc must_realloc INIT_MALLOC_LIMIT):
	modified to call igc when malloc usage exceeds mtrigger (idea from
	hugh@ear.MIT.EDU, Hugh Secker-Walker).

	From: Jerry D. Hedden
	* pi.scm (bigpi): bignum version of pi calculator.

Tue Oct 26 18:41:33 1993    (jaffer at jacal)

	* repl.c (room): added procedure for printing storage statistics.

Sun Oct 24 22:40:15 1993    (jaffer at jacal)

	* config.h eval.c scl.c (STACK_LIMIT CHECK_STACK): added.
	* sys.c (stack_check): added.

Sat Oct 23 00:08:30 1993    (jaffer at jacal)

	* sys.c (mallocated): added to keep track of non-heap usage.

	* sys.c (igc): fixed interrupt vulnerabilities around gc.

Sun Oct 17 13:06:11 1993    (jaffer at jacal)

	* repl.c (exit_report): added.  Prints cumulative times if
	(verbose > 2).  Called from free_storage().

	* repl.c (repl): fixed CRDYP(stdin) BUG!  Transcripts should work
	again.  Other annoying CR behaviour fixed.

	* time.c (init_time your_base my_base): now not reset when
	restarting so timing numbers for restarting are correct.

	* scm.h (sys_protects): rearranged.
	* sys.c (tmp_errp): now a statically allocated global variable,
	used by init_storage and free_storage.
	* scm.h sys.c (tc16_fport, tc16_pupe, tc16_strport, tc16_sfport):
	now #defines (which must correspond to order of newptob calls).

Sun Oct  3 20:38:09 1993  Bryan O'Sullivan  (bos@scrg.cs.tcd.ie)

	* README.unix configure configure.in scmconfig.h.in
	mkinstalldirs Makefile.in acconfig-1.5.h: SCM can now be built
	using GNU autoconf.  Put in scmconfig4c5.tar.gz

Sun Oct  3 00:33:57 1993    (jaffer at jacal)

	* MANUAL (bit-count bit-position bit-set*! bit-count*
	bit-invert!): (from unif.c) are now documented.

	* sys.c (fixconfig): added 3rd argument to distinguish between
	setjump.h and config.h.
	* setjump.h config.h: moved IN_SYS stuff from config.h to
	setjump.h.
	* config.h (HAVE_CONFIG_H): User config preferences now taken
	from "scmconfig.h" if HAVE_CONFIG_H is defined.
	* config.h (EXIT_SUCCESS EXIT_FAILURE): fixed for VMS.

Sat Oct  2 00:34:38 1993    (jaffer at jacal)

	From: rshouman@hermes.chpc.utexas.edu (Radey Shouman)
	* unif.c repl.c: added read and write syntax for uniform vectors.
	* unif.c (uniform-vector->list list->uniform-vector): created.
	* time.c (time_in_msec): conditionalized for wide range of CLKTCK
	values.
	* config.h (BITSPERDIG POINTERS_MUNGED)
	* scm.h (PTR2SCM SCM2PTR)
	* scl.c (DIGSTOOBIG)
	    Ported SCM to Unicos, the Cray operating system.

	From: schwab@ls5.informatik.uni-dortmund.de (Andreas Schwab)
	* scl.c (dblprec): set from DBL_DIG, if available.

Fri Oct  1 21:43:58 1993    (jaffer at jacal)

	* unif.c (bit-position): now returns #f when item is not found.
	Now returns #f when 3rd argument is length of 2nd argument
	(instead of error).

Fri Sep 24 14:30:47 1993    (jaffer at jacal)

	* sys.c (free_storage): fixed bug where growth_mon was being
	called after the port cell had been freed.  gc_end now also
	called at end.

Tue Sep 21 23:46:05 1993    (jaffer at jacal)

	* Init.scm scm.c: Restored old command line behaviour (loading all
	command line arguments) for case when first command line argument
	does not have leading `-'.

	* sys.c (mode_bits): abstracted from open_file and mksfpt.

	* scm.h (*FPORTP): series of predicates added for operations which
	only work on some fports.

	* sys.c crs.c: ungetc removed from ptobfuns structure and
	soft-ports.

Mon Sep 20 23:53:25 1993    (jaffer at jacal)

	* sys.c (make-soft-port): Soft-ports added, allowing Scheme
	i/o extensions.

Sun Sep 19 22:55:28 1993    (jaffer at jacal)

	* 4c4: released.
	* Init.scm scm.c scm.1: command line proccessing totally
	rewritten.  Thanks to Scott Schwartz
	<schwartz@groucho.cs.psu.edu> for help with this.

Mon Sep 13 21:45:52 1993    (jaffer at jacal)

	From: pegelow@moorea.uni-muenster.de (Ulrich Pegelow)
	* scl.c (add1): finally a way to fool optimizing gcc to not use
	extra precision registers.

Sun Sep 12 18:46:02 1993    (jaffer at jacal)

	* sys.c (pwrite): added to stubbify fwrite to fix bug on VMS.
	* config.h: moved flags to top per suggestions from Bryan
	O'Sullivan (bos@scrg.cs.tcd.ie).

Fri Sep 10 11:42:27 1993    (jaffer at jacal)

	* repl.c config.h (EXIT_SUCCESS EXIT_ERROR): added.  Values
	returned by SCM program.

Thu Sep  9 13:09:28 1993  Aubrey Jaffer  (jaffer at camelot)

	From: Vincent Manis <manis@cs.ubc.ca>
	* sys.c (stwrite init_types add_final): fixed declarations.

Mon Sep	 6 16:10:50 1993  Bryan O'Sullivan  (bos@scrg.cs.tcd.ie)

	* README: changed the build and installation instructions to bring
	them up to date with reality.

Sun Sep	 5 23:08:54 1993  Bryan O'Sullivan  (bos@scrg.cs.tcd.ie)

	* Wrote autoconf script to support GNU Autoconf configuration
	to make scm easier to build.

	* Created Makefile.in; a radical overhaul of Makefile to remove
	some of the brokenness and allow cross-compilation and use of
	autoconf.

Sat Sep  4 23:00:49 1993    (jaffer at jacal)

	* 4c3: released.
	* sys.c (grow_throw): removed use of memset for SPARC machines.

Sat Sep  4 18:09:59 1993  Bryan O'Sullivan  (bos@scrg.cs.tcd.ie)

	* time.c: added SVR4 to the list of LACK_FTIME systems, because
	most all SVR4 BSD-compatibility stuff is a total mess.

	* config.h: changed definition of STDC_HEADERS so it does the
	Right Thing on systems which run GCC but don't have header files
	with prototypes.

	* makefile.unix: added a note for SVR4 users.

Tue Aug 31 18:30:53 1993    (jaffer at jacal)

	* eval.c (m_define): if verbose >= 5 warnings are issued for all
	top-level redefinitions.

Mon Aug 30 16:24:26 1993    (jaffer at jacal)

	* scm.c sys.c (finals num_finals add_final): Finalization calls
	now dynamically, incrementally, defined.

Thu Aug 26 12:38:27 1993  Aubrey Jaffer  (jaffer at camelot)

	* 4c2: fixed declaration problems in PTOB with K&R C.

Sun Aug 22 23:02:51 1993    (jaffer at jacal)

	* split.scm: code which directs input, output, and diagnostic
	output to separate windows (using curses functions defined in
	crs.c).

Sat Aug 21 16:46:33 1993    (jaffer at jacal)

	* Init.scm (output-port-height): added if not already defined.
	output-port-width also made conditional.

	* sys.c (tc16_strport): string ports created.

Thu Aug 19 11:37:07 1993    (jaffer at jacal)

	* sys.c (init_types): freecell, floats, and bignums now have SMOB
	entries.  gc_sweep and gc_mark still inline codes for bignums and
	floats.

	* sys.c repl.c code.doc: Ports now an extensible type.
	Indirection suggested by Shen <sls@aero.org>.

Mon Aug 16 01:20:26 1993    (jaffer at jacal)

	* crs.c: curses support created.

Sun Aug 15 16:56:36 1993    (jaffer at jacal)

	* rgx.c sys.c (mark0 equal0): mark0 moved to sys.c.  equal0
	created.

Fri Jun 25 01:16:31 1993    (jaffer at jacal)

	* QUICKREF: added.

Tue Jun 22 00:40:58 1993  Aubrey Jaffer  (jaffer at camelot)

	* repl.c (ungetted): replaced with CRDYP(stdin) to fix recently
	introduced transcript bug.

Sun Jun 20 22:29:32 1993  Aubrey Jaffer  (jaffer at camelot)

	* config.h (NOSETBUF): setbuf() now conditionalized on NOSETBUF.

	* Init.scm (defmacro): now copies the results of macro expansion
	in order to avoid capture of memoized code by macros like:
	(defmacro f (x) `(list '= ',x ,x)).

Wed Jun  2 23:32:05 1993  Aubrey Jaffer  (jaffer at caddr)

	* eval.c (map for-each): now check that arguments are lists.

Mon May 31 23:05:19 1993  Aubrey Jaffer  (jaffer at camelot)

	* Init.scm (trace untrace): now defmacros which handle (trace) and
	(untrace) as in Common Lisp.

Wed May  5 01:17:37 1993  Aubrey Jaffer  (jaffer at camelot)

	From: Roland Orre  <orre@sans.kth.se>
	* all: internal output functions now take SCM ports instead of
	FILE* in preparation for string-ports.

Tue May  4 17:49:49 1993  Aubrey Jaffer  (jaffer at wbtree)

	* makefile.unix (escm.a): created scm "ar" file and used for
	dbscm.

Sun Apr 25 21:35:46 1993  Aubrey Jaffer  (jaffer at camelot)

	* sys.c (free_storage): i++ moved out of CELL_* in response to:
From: john kozak <jkozak@cix.compulink.co.uk>
Minor bug report: around line 10 of routine "free_storage" you do calls
to CELL_UP and CELL_DOWN with arguments having side-effects: with the
PROT386switch defined in config.h these args are evaluated twice...

Sun Apr 11 22:56:19 1993  Aubrey Jaffer  (jaffer at camelot)

	* eval.c (IM_DEFINE): added.  Internal defines are no longer
	turned into LETRECS.

Wed Apr  7 13:32:53 1993  Aubrey Jaffer  (jaffer at camelot)

	Jerry D. Hedden <HEDDEN@ESDSDF.dnet.ge.com>
	* scl.c (idbl2str): fix for bug introduced by removing +'s.

Tue Mar 23 15:37:12 1993  Aubrey Jaffer  (jaffer at camelot)

	* scl.c (idbl2str): now prints positivie infinity as +#.# again
	(instead of #.#).

Mon Mar 22 01:38:02 1993  Aubrey Jaffer  (jaffer at montreux)

	* subr.c (quotient): renamed to lquotient to avoid conflict with
	HP-UX 9.01.

Fri Mar 19 01:21:08 1993  Aubrey Jaffer  (jaffer at camelot)

	* sys.c repl.c: #ifndef THINK_C #include <sys/ioctl.h>
	* time.c (lstat): #ifndef THINK_C. ThinkC 5.0.1 lacked.

Mon Mar 15 23:35:32 1993  Aubrey Jaffer  (jaffer at camelot)

	From: jhowland@ariel.cs.trinity.edu (Dr. John E. Howland)
	* scl.c (idbl2str iflo2str big2str): leading + eliminated on
	output and number->string.

Wed Mar 10 00:58:32 1993  Aubrey Jaffer  (jaffer at camelot)

	* repl.c scm.h (CRDYP CLRDY CGETUN CUNGET): cleaned up ungetc hack.

	* scm.c repl.c (exec): added.

Sun Mar  7 22:44:23 1993  Aubrey Jaffer  (jaffer at camelot)

	* repl.c (def_err_response): now will print errobjs if they are
	immediates, symbols, ports, procedures, or numbers.

Fri Mar  5 23:15:54 1993  Aubrey Jaffer  (jaffer at camelot)

	* repl.c (repl): now gives repl_report() for initialization.

	* Init.scm (defvar): added.

	From: Roland Orre  <orre@sans.kth.se>
	* repl.c (lungetc): no longer calls ungetc.  Fixed problem that
	many systems had with ungetc on unbuffered ports (setbuf(0)).

Thu Mar  4 13:51:12 1993  Aubrey Jaffer  (jaffer at camelot)

	From: Stephen Schissler
	* makefile.wcc: Watcom support added.

Wed Mar  3 23:11:08 1993  Aubrey Jaffer  (jaffer at montreux)

	* sys.c scm.h (dynwinds): made a sys_protect.

Mon Feb 15 11:30:50 1993  Aubrey Jaffer  (jaffer at camelot)

	* Init.scm (defmacro macroexpand macroexpand1 macro? gensym):
	added.

	* repl.c (stdin): setbuf not done for __TURBOC__==1.

	* makefile.bor: now has method to build turtegr.exe.

	* eval.c (ceval): Memoizing macros now can return any legal Scheme
	expression.

Sat Feb 13 18:01:13 1993  Aubrey Jaffer  (jaffer at camelot)

	* subr.c (mkbig adjbig): now check for bignum size.

	* Init.scm: reorganized so site-specific information is at the
	head.

	* repl.c (errno): changed from set-errno now returns value.

	* subr.c (intexpt): now handles bignum exponents.

	From: "David J. Fiander" <davidf@golem.waterloo.on.ca>
	* time.c makefile.unix subr.c: SCO Unix and XENIX patches.

Fri Feb 12 22:18:57 1993  Aubrey Jaffer  (jaffer at camelot)

	* Init.scm (WITH-INPUT-FROM-PORT WITH-OUTPUT-TO-PORT
	WITH-ERROR-TO-PORT): added.

	* subr.c (ash): fixed for case (ash 2 40) where INUM arguments
	make a bignum result.

	* repl.c (lreadr): \ followed by a newline in a string is ignored.

	From: Scott Schwartz <schwartz@groucho.cs.psu.edu>
	* repl.c (lreadr): Can now read \0\f\n\r\t\a\v in strings.

Thu Feb 11 01:25:50 1993  Aubrey Jaffer  (jaffer at camelot)

	* Init.scm (with-input-from-file with-output-to-file
	with-error-to-file): now use dynamic-wind.

Sun Feb  7 22:51:08 1993  Aubrey Jaffer  (jaffer at camelot)

	* eval.c (ceval): fixed bug with non-memoizing macro returning an
	IMP.

Sat Feb  6 01:22:27 1993  Aubrey Jaffer  (jaffer at camelot)

	* (current-error-port with-error-to-file): add.

Fri Feb  5 00:51:23 1993  Aubrey Jaffer  (jaffer at camelot)

	* time.c (stat): added.

	From: rnelson@wsuaix.csc.wsu.edu (roger nelson)
	* dmakefile: support for DICE C on Amiga.

Thu Feb  4 01:55:30 1993  Aubrey Jaffer  (jaffer at camelot)

	* sys.c (open-file) makes unbuffered if isatty.

	* repl.c (char-ready?) added.

Mon Feb  1 15:24:18 1993  Aubrey Jaffer  (jaffer at camelot)

	* subr.c (logor): changed to LOGIOR to be compatible with common
	Lisp.

	* eval.c (bodycheck): now checks for empty bodies.

Sun Jan 31 01:01:11 1993  Aubrey Jaffer  (jaffer at camelot)

	* time.c (get-universal-time decode-universal-time): now use
	bignums.

Tue Jan 26 00:17:06 1993  Aubrey Jaffer  (jaffer at camelot)

	* sys.c (mark_locations): now length argument in terms of
	STACKITEM.  Does both alignments in one pass.

Mon Jan 25 12:13:40 1993  Aubrey Jaffer  (jaffer at camelot)

	From: soravi@Athena.MIT.EDU
	* makefile.emx: for OS/2

Sun Jan 24 18:46:32 1993  Aubrey Jaffer  (jaffer at camelot)

	From: stevev@miser.uoregon.edu (Steve VanDevender)
	* scl.c (big2str): now faster because it divides by as many 10s as
	fit in a BIGDIG.

Sat Jan 23 00:23:53 1993  Aubrey Jaffer  (jaffer at camelot)

	From: stevev@miser.uoregon.edu (Steve VanDevender):
	* config.h (INUM MAKINUM): shift optimization for TURBOC.

Fri Jan 22 00:46:58 1993  Aubrey Jaffer  (jaffer at montreux)

	From: hanche@ams.sunysb.edu (Harald Hanche-Olsen)
	* unif.c (uniform-vector?): added.

Tue Jan 19 00:27:04 1993  Aubrey Jaffer  (jaffer at camelot)

	From: stevev@miser.uoregon.edu (Steve VanDevender)
	* subr.c scl.c config.h: bignum bug fixes for MSDOS.

Mon Jan 18 01:15:24 1993  Aubrey Jaffer  (jaffer at camelot)

	* subr.c (ash lognot intlength logcount bitextract): now handle
	bignums.

Sun Jan 17 10:42:44 1993  Aubrey Jaffer  (jaffer at camelot)

	* sys.c (close_port): can now close pipes as well.

	* subr.c (adjbig normbig divide quotient): fixed more divide bugs.

	* subr.c (even? odd?): fixed problem with bignums.

Sat Jan 16 00:02:05 1993  Aubrey Jaffer  (jaffer at camelot)

	* subr.c (divbigbig): Fixed last divide bug?

Fri Jan 15 00:07:27 1993  Aubrey Jaffer  (jaffer at camelot)

	* rgx.c (regmatch?): added.  Debugged for both HP-UX and GNU
	regex-0.11.  Documentation added to MANUAL.

Thu Jan 14 11:54:52 1993  Aubrey Jaffer  (jaffer at camelot)

	* patchlvl.h (SCMVERSION): moved from config.h.

	* scl.c (product): fixed missing {} bug.

	From: HEDDEN@esdsdf.dnet.ge.com
	* scl.c (lmin lmax) bignum versions.

Wed Jan 13 01:40:51 1993  Aubrey Jaffer  (jaffer at camelot)

	* released scm4b0.

	* subr.c: fixed bignum bugs found by jacal.

	* code cleanup.

	From: HEDDEN@esdsdf.dnet.ge.com
	* subr.c (lgcd quotent modulo lremainder): Bignum versions.
	* subr.c (divbigbig): new version.

Sun Jan  3 00:29:35 1993  Aubrey Jaffer  (jaffer at camelot)

	From: stevev@miser.uoregon.edu (Steve VanDevender)
	* Re-port to BorlandC v2.0

	* sys.c (must_realloc): added

	* config.h subr.c (BIGRAD pseudolong): now insensitive to ratio of
	sizeof(long)/sizeof(BIGDIG).

Mon Dec 21 23:20:47 1992  Aubrey Jaffer  (jaffer at camelot)

	From: Scott Schwartz <schwartz@groucho.cs.psu.edu>
	* rgx.c: created SCM interface to regex and regexp routines.

	From: HEDDEN@esdsdf.dnet.ge.com
	* subr.c scl.c: Now just one mulbigbig and addbigbig routine.

	from: soravi@Athena.MIT.EDU
	* README: directions for compiling SCM under OS/2 2.0.

Wed Dec  9 15:34:30 1992  Aubrey Jaffer  (jaffer at camelot)

	* eval.c (tc7_subr_2x): eliminated.  All comparison subrs now
	rpsubrs.

	* scm.h: Changed SUBR numbers.  This improves HP-UX interpretation
	speed (why?).

	* eval.c (PURE_FUNCTIONAL): removed.  Can now be done in
	initialization code.

	* eval.c (tc7_rpsubr): added type for transitive comparison
	operators.  Suprisingly, this slows down (pi 100 5).

Mon Dec  7 16:15:47 1992  Aubrey Jaffer  (jaffer at camelot)

	* subr.c (logand logor logxor lognot ash logcount integer-length
	bit-extract): added.

	From: HEDDEN@esdsdf.dnet.ge.com
	* scl.c: lots more numeric improvements and code reductions.

Mon Nov 30 12:25:54 1992  Aubrey Jaffer  (jaffer at camelot)

	* scm.h (IDINC ICDR IDIST): enlarged depth count in ILOCs.

Sun Nov 29 01:10:18 1992  Aubrey Jaffer  (jaffer at camelot)

	* subr.c scl.c: most arithmetic operations will now return
	bignums.

	* config.h (FIXABLE POSFIXABLE NEGFIXABLE): added.

	* sys.c (object-hash object-unhash): now use bignums.

	* scl.c (big2str istr2int): bignum i/o implemented.

	* unif.c: subr2s were incorrectly initialized as lsubr2s.

Tue Nov 24 14:02:52 1992  Aubrey Jaffer  (jaffer at camelot)

	* eval.c (ceval): added unmemocar calls to error handling when
	possible.

	* scl.c (idbl2str): added back NAN and infinity support.

	* eval.c (syntax_mem): replaced with individual macros.
	* eval.c (procedure->syntax procedure->macro
	procedure->memoizing-macro): All syntactic keywords are now
	tc7_symbol.  User definable macros added.
	* sys.c: ISYMs no longer in symhash.  ISYMs cannot be read.
	init_isyms merged into init_eval.

Sat Nov 21 00:39:31 1992  Aubrey Jaffer  (jaffer at camelot)

	* makefile.unix (check): now exits with error code.

	* sys.c (init_isyms): eliminated.  ISYMS now inited in init_eval.

Fri Nov 20 16:14:06 1992  Aubrey Jaffer  (jaffer at camelot)

	* released scm4a13

	* repl.c: longjmps now dowinds() first.

	* setjump.h: now has all setjmp related definitions.

	* Init.scm (trace untrace): use new macro system.

	* eval.c (defined? procedure->macro procedure->memoizing-macro
	make_synt): macro system added.  defined? uses it.

	From: HEDDEN@esdsdf.dnet.ge.com
	* scl.c: fixes for several transcendental functions.

Thu Nov 19 01:14:38 1992  Aubrey Jaffer  (jaffer at camelot)

	* repl.c sys.c: errjmp replaced with JMPBUF(rootcont).

Sun Nov 15 01:49:00 1992  Aubrey Jaffer  (jaffer at camelot)

	From: HEDDEN@esdsdf.dnet.ge.com
	* scl.c (istr2int istr2flo istring2number string2number): new
	versions.

Thu Nov 12 23:00:04 1992  Aubrey Jaffer  (jaffer at Ivan)

	* Init.scm (load): now prints out actual filename found in mesasge
	;done loading ...

Wed Nov 11 01:01:59 1992  Aubrey Jaffer  (jaffer at camelot)

	* repl.c (def_err_response): ARG1 error with errobj==UNDEFINED
	becomes WNA error.

	From: HEDDEN@esdsdf.dnet.ge.com (Jerry D. Hedden)
	* scl.c (difference divide): Now are asubrs.

	* Init.scm (*features*): fixed to correspond to SLIB conventions.

Mon Nov  9 12:03:58 1992  Aubrey Jaffer  (jaffer at camelot)

	* scl.h test.scm: (string->number "i") and "3I" and "3.3I" fixed
	to return #f.  Tests added to test.scm.

Fri Nov  6 16:39:38 1992  Aubrey Jaffer  (jaffer at camelot)

	* scm.h (rootcont): sysprotect added.

	From: Vincent Manis <manis@cs.ubc.ca>
	* scm.h: __cplusplus prototype support.

Thu Nov  5 00:39:50 1992  Aubrey Jaffer  (jaffer at Ivan)

	* eval.c (lookupcar): now checks for UNDEFINED in local bindings
	becuase LETREC inits to UNDEFINED.

	* sys.c (dynamic-wind): added.

	* config.h eval.c (ceval): CAUTIOUS mode added.

	From: hugh@ear.MIT.EDU (Hugh Secker-Walker)
	* eval.c (ceval): internal defines now transformed to letrecs.

Sun Oct 25 12:27:23 1992  Aubrey Jaffer  (jaffer at Ivan)

	* repl.c (read-line read-line!): created.

Sat Oct 24 18:36:23 1992  Aubrey Jaffer  (jaffer at camelot)

	* repl.c (lreadparen): now tail-recursive.

	* eval.c (copy-tree eval): added.  dummy_cell replaced with a
	cons(obj,UNDEFINED).

Thu Oct 22 21:26:53 1992  Aubrey Jaffer  (jaffer at Ivan)

	* repl.c (set-errno!): changed to set-errno.

Thu Oct 15 00:49:20 1992  Aubrey Jaffer  (jaffer at camelot)

	* sys.c (must_free): must_free created.  Pointers are set to 0.
	It detects objects being freed twice.

Wed Oct 14 23:57:43 1992  Aubrey Jaffer  (jaffer at camelot)

	* scm.c (run_scm): Now has INITS and FINALS.

	* scm.c (init_signals ignore_signals unignore_signals
	restore_signals): siginterrupt() for ultix.

Fri Oct  9 14:25:06 1992  Aubrey Jaffer  (jaffer at camelot)

	* all: put in explicit casts to (unsigned char *) and (long) to
	satisfy lint.

	* sys.c (gc): all to gc_end was during deferred interrupts,
	causing problems with verbose=3 and interrupts during GC.

	* config.h(SYSCALLDEF): fixed so that test on errno occurs before
	ALLOW_INTS (and possible call to user code).

Sun Oct  4 01:45:25 1992  Aubrey Jaffer  (jaffer at camelot)

	* eval.c (syntax_mem): removed gratuitous cons.

	* eval.c repl.c scm.h: Reduced static string use.  Added peephole
	optimizations for AND and OR.

	From: hugh@ear.MIT.EDU (Hugh Secker-Walker)
	* eval.c repl.c scm.h (syntax_mem):  syntax forms are now memoized
	so that syntax checks are done only once.  Interpreter is now
	smaller and faster and uses less stack space.  Modifications to
	code are now made under DEFER_INTS as they always should have
	been.

Wed Sep 30 22:06:24 1992  Aubrey Jaffer  (jaffer at Ivan)

	* scl.c subr.c scm.h config.h: Started adding bignum code.

Sun Sep 27 22:59:59 1992  Aubrey Jaffer  (jaffer at Ivan)

	* repl.c (restart): added.

	* sys.c (freeall): finished.

	* scm.h (tc7_symbol): split into tc7_ssymbol and tc7_msymbol to
	distinguish between non-GCable and GCable symbols.

Wed Sep 23 00:36:23 1992  Aubrey Jaffer  (jaffer at Ivan)

	* repl.c (peek_char lungetc): added workaround for TURBOC 1.0
	problem with ungetc inside SYSCALLDEF macro.

	* repl.c (iprin1): uses ttyname for #<stream ..> if available.

	* Init.scm: now sets verbose to 0 if stdin or stdout is not a tty.

	* repl.c (isatty?): added.

	* repl.c (verbose): levels bumped up by 1.  verbose == 0 means no
	prompt.

	* makefile.djg config.h (GNUDOS -> GO32): flags changed for djgpp108.

Wed Aug 26 21:46:26 1992  Aubrey Jaffer  (jaffer at Ivan)

	* test.scm: put in (test #f < 1 3 2) and (test #f >= 1 3 2).

	* scl.c (leqp greqp): put back in.  (not (< 1 3 2)) does not imply
	(>= 1 3 2).

	* makefile.unix: tar and shar files now created in subdirectory.

	* config.h time.c: Linux support added.

	* repl.c: Greatly improved VMS interrupt support.

	* eval.c (ceval): I_LET now changes to I_LETSTAR for single clause
	unnamed lets.y

	* (tc7_lsubr_2n): removed.

Fri Jul 31 00:24:50 1992  Aubrey Jaffer  (jaffer at Ivan)

	* unif.c (bit-position): fixed;  I am sure I had done these
	changes before.  Also corrected some error messages.

	From: campbell@redsox.bsw.com (Larry Campbell)
	* scm.h subr.c sys.c (equalp): smobfuns now include equalp.

Mon Jul 20 16:44:30 1992  Aubrey Jaffer  (jaffer at Ivan)

	From: Stephen Adams <S.R.Adams@ecs.southampton.ac.uk>
	* eval.c scm.h subr.c (BOOL_NOT) macro added to fix ^ bug in
	BorlandC.  This was fixed previously as well.

	From: campbell@redsox.bsw.com (Larry Campbell)
	* unif.c (vector-set-length!): was always typing to tc7_vector.

Sat Jul 18 01:07:33 1992  Aubrey Jaffer  (jaffer at Ivan)

	* subr.c sys.c (make_vector init_storage resizuve): mallocs and
	reallocs are now always > 0.

	* time.c (get_univ_time): bypassed mktime() for (__TURBOC__ == 1).

Mon Jul 13 22:27:04 1992  Aubrey Jaffer  (jaffer at Ivan)

	* repl.c (lreadr): now ignores first line of port if begins with "#!"

	* scl.c (lesseqp greqp): removed; changed to use tc7_lsubr_2n.

	* scm.h eval.c (tc7_lsubr_2n): type added.  Other subr types
	rearranged.

Sat Jul 11 23:47:18 1992  Aubrey Jaffer  (jaffer at Ivan)

	* scm.h sys.c repl.c eval.c code.doc (newsmob smobs smobfuns): now
	support	dynamically added smob types.  Promises moved to eval.c.
	Promises and arbiters are now newsmobs.

	* makefile.unix repl.c scl.c (floprint): moved from repl.c to
	scl.c.  The only files which care about -DFLOATS are now scl.c,
	eval.c, scm.c, and unif.c.

	* sys.c scm.h (init_storage): now uses variable num_protects
	instead of #define NUM_PROTECTS.

Tue Jul  7 00:00:57 1992  Aubrey Jaffer  (jaffer at Ivan)

	From: Ulf_Moeller@hh2.maus.de (Ulf Moeller)
	* Init.scm config.h makefile.prj: support for the ATARI-ST with
	Turbo C added.

Tue Jun 30 23:45:50 1992  Aubrey Jaffer  (jaffer at Ivan)

	* unif.c (make-uniform-vector uniform-vector-set!
	uniform-vector-ref): added.

Tue Jun 23 11:49:13 1992  Aubrey Jaffer  (jaffer at Ivan)

	* scm.h sys.c code.doc: rearranged tc7 codes and added bvect,
	ivect, uvect, fvect, dvect, cvect, and cclo.

	* scm.h sys.c eval.c repl.c code.doc: Changed symbols to be
	tc7_symbol.

Sat Jun  6 22:27:40 1992  Aubrey Jaffer  (jaffer at Ivan)

	From: campbell@redsox.bsw.com (Larry Campbell)
	* scl.c (divide): divide by 0 and Exact-only divides of non
	multiples now cause exception in RECKLESS mode.

Wed May 27 16:02:58 1992  Aubrey Jaffer  (jaffer at Ivan)

	* config.h scl.c (NUMBUFLEN): split into INTBUFLEN and FLOBUFLEN
	and made proportional to size of numeric types.

	From: fred@sce.carleton.ca (Fred J Kaudel)
	* makefile.ast scm.c Init.scm: minor chages for ATARI ST support.

	* test.scm (test-inexact): created.

Thu May 21 11:43:41 1992  Aubrey Jaffer  (jaffer at Ivan)

	* patchlvl.h (PATCHLEVEL): 5

	From: hugh@ear.mit.edu (Hugh Secker-Walker)
	* config.h: better wording for heap allocation strategy
	explanation.

Wed May 20 00:31:18 1992  Aubrey Jaffer  (jaffer at Ivan)

	From S.R.Adams@ecs.southampton.ac.uk
	* subr.c (stci_leqp st_leqp): reversed order of ^ clauses to avoid
	Borland 3.0 bug.

	* sys.c (gc_sweep): missing i-=2; added when splicing out segment.

	* MANUAL time.c (get-universal-time decode-universal-time): half
	hearted attempt to add these.  Needs bignums.

Wed May 13 14:01:07 1992  Aubrey Jaffer  (jaffer at Ivan)

	* sys.c (gc_mark): improved tail recursivness for CONSes.

	* repl.c (growth_mon): now prints out the hplims table if
	verbose>3.

	* sys.c (init_heap_seg): Serious bug in growing hplims fixed.
	num_heap_segs eliminated; hplims are realloced whenever grown.

Tue May 12 15:36:17 1992  Aubrey Jaffer  (jaffer at train)

	* config.h sys.c (alloc_some_heap expmem):  expmem captures
	whether the INIT_HEAP_SIZE allocation was successful.  If so,
	alloc_some_heap uses exponential heap allocation instead of
	HEAP_SEG_SIZE.

Mon May 11 15:29:04 1992  Aubrey Jaffer  (jaffer at Ivan)

	* sys.c (gc_sweep init_heap_seg heap_org): Empty heap segments
	are now freed.

	* sc2.c (STR_EXTENSIONS): renamed REV2_PROCEDURES and R2RS and
	R3RS functions put into sc2.c.

Sun May 10 01:34:11 1992  Aubrey Jaffer  (jaffer at Ivan)

	* scm.c (ignore_interrupts unignore_interrupts): added for
	system, edt$edit, and popen to use.

	* repl.c (lwrite display newline write_char): Close pipe if EPIPE.

	* repl.c (file_set_position): now errs on ESPIPE.

	* scm.c (SIGPIPE): now ignored (errs come back as EPIPE).

Sat May  9 17:52:36 1992  Aubrey Jaffer  (jaffer at Ivan)

	From: Stephen Adams <S.R.Adams@ecs.southampton.ac.uk>
	* config.h (PROT386): PROT386 added.  PTR_LT and CELL_UP modified.

Fri May  8 17:57:22 1992  Aubrey Jaffer  (jaffer at Ivan)

	From: hugh@ear.mit.edu (Hugh Secker-Walker)
	* Init.scm (last-pair append!): last-pair is faster version.
	Append! corrected for null first arg.  (getenv "HOME") now gets
	a "/" added if not present.

	* config.scm (MIN_GC_YIELD): now proportional to HEAP_SEG_SIZE.

	* README: setting environment variables corrected.

	* subr.c (length): error message now has arg if not a list.

	* sys.c (open-pipe): now turns off interrupts before forking.

	* scl.c (lsystem): now turns off interrupts before forking.

	* scm.c (ignore_signals): created.

Sat May  2 01:02:16 1992  Aubrey Jaffer  (jaffer at Ivan)

	* Init.c (WITH-INPUT-FROM-FILE WITH-OUTPUT-TO-FILE): defined in
	terms of current-input-port and current-output-port.  Bug in
	open-input-pipe and open-output-pipe fixed.

	* sys.c repl.c (current-input-port current-output-port): moved
	from sys.c to repl.c.  set-current-input-port and
	set-current-output-port added to repl.c.

Mon Apr 13 22:51:32 1992  Aubrey Jaffer  (jaffer at Ivan)

	* patchlvl.h: (PATCHLEVEL): released scm4a1.

	* makefile.* VMSBUILD.COM VMSGCC.COM: compile time.h.

	* scm.c (alrm_signal int_signal): now save and restore errno so
	SYSCALL will work correctly across interrupts.

Sun Apr 12 01:44:10 1992  Aubrey Jaffer  (jaffer at Ivan)

	* patchlvl.h: (PATCHLEVEL): released scm4a0.

	* repl.c (lread): tok_buf now local to each invocation of read.
	This makes READ interruptable and reentrant.

	* sys.c MANUAL (STRING-SET-LENGTH! STRING-VECTOR-LENGTH!): created.

	* sys.c repl.c (grow_tok_buf tok_buf tok_buf_len): moved to repl.c

	* repl.c (lfwrite): now emulated for VMS.

	* repl.c scl.c (num_buf): now local to all routines that use it.

	* time.h: created by moving time functions from repl.c.  Read and
	write functions were moved from sys.c to repl.c.

	* sys.c repl.c (DEFER_INTS ALLOW_INTS CHECK_INTS): totally
	rewritten.  SIGALRM and SIGINT now execute at interrupt level.
	Interrupts deferred only for protected code sections, not for
	reads and writes.

	* sys.c repl.c (SYSCALL): created to reexecute system calls
	interrupted (EINTR) by SIGALRM and SIGINT.

	* sys.c scl.c (flo0): 0.0 is now always flo0.

	* repl.c sys.c (TRANSCRIPT-ON TRANSCRIPT-OFF): added.  This
	required shadowing putc, fputs, fwrite, and getc with lputc,
	lputs, lfwrite, and lgetc.

Sun Apr  5 00:27:33 1992  Aubrey Jaffer  (jaffer at Ivan)

	From: HEDDEN@esdsdf.dnet.ge.com (Jerry D. Hedden)
	* scl.c (eqp lessp greaterp lesseqp greatereqp):
	Comparisons with inexact numbers was not being performed
	correctly.  For example, (< 1.0 2.0 1.5) would yield #t.  What was
	missing was a line x=y; in the inexact comparison sections of
	lessp(), greaterp(), lesseqp() and greatereqp().  In addition, I
	modified these routines and eqp() to allow for mixed arithmetic
	types.

Sat Apr  4 00:17:29 1992  Aubrey Jaffer  (jaffer at Ivan)

	* scm.h code.doc: tc7_bignum => tc7_spare.  Added tc16_bigpos and
	tc16_bigneg.  SMOBS reordered.  tc16_record added.

	* scm.h repl.c sys.c (make-arbiter try-arbiter release-arbiter):
	added.  tc16_arbiter added.

Fri Apr  3 01:25:35 1992  Aubrey Jaffer  (jaffer at Ivan)

	* sys.c config.h (TEMPTEMPLATE): created in config.h.

	* scm.h: removed long aliases for C versions of Scheme functions.

	* sys.c eval.c scm.h: (delay force makprom): added.  Also added
	tc16_promise data type.

	* Init.scm (trace untrace): added autoloads and read macros.

	From: T. Kurt Bond, tkb@mtnet2.wvnet.edu
	* sys.c (template): correct template for VMS.

Tue Mar 31 01:50:12 1992  Aubrey Jaffer  (jaffer at Ivan)

	* sys.c config.h Init.scm (open-file open-pipe): created and
	expressed other open functions in terms of.  Bracketed all i/o
	system calls with DEFER and ALLOW _SIGINTS.

Sat Mar 28 00:24:01 1992  Aubrey Jaffer  (jaffer at Ivan)

	* sys.c MANUAL (#.): read macro syntax added.  Balanced comments
	also documented.

Fri Mar 27 22:53:26 1992  Aubrey Jaffer  (jaffer at Ivan)

	* sys.c (iprin1): changed printed representation for unreadable
	objects from #[...] to #<...>.

	From: brh@aquila.ahse.cdc.com (brian r hanson x6009):
	* scm.h config.h (NCELLP PTR_LT): fixes for 64 bit pointers on
	nosve.

Fri Mar 20 01:36:08 1992  Aubrey Jaffer  (jaffer at Ivan)

	* Released scm3c13

	* code.doc: corrected some minor inconsistencies and added a
	section "To add a package of new procedures to scm".

Sun Mar 15 19:44:45 1992  Aubrey Jaffer  (jaffer at Ivan)

	* Init.scm: now loads <program-name>_INIT_PATH when <program-name>
	is not "SCM".

	* config.h (PTR_LT): (x < y) => ((x) < (y))

Wed Mar  4 01:53:15 1992  Aubrey Jaffer  (jaffer at Ivan)

	* Released scm3c12.

	* scm.h code.doc eval.c sys.c (IXSYM): Eliminated Immediate IXSYM
	type.

Tue Mar  3 00:58:18 1992  Aubrey Jaffer  (jaffer at Ivan)

	* eval.c config.c (ceval DEFINED? SYNTAX_EXTENSIONS): added
	DEFINED? to ceval conditional on SYNTAX_EXTENSIONS.

	From: Andrew Wilcox <andrew@astro.psu.edu>
	* makefile.unix scm.c (main init_scm display_banner init_signals
	restore_signals run_scm): RTL support.

Mon Mar  2 19:05:29 1992  Aubrey Jaffer  (jaffer at Ivan)

	* subr.c (make-string): now checks for ARG1 >= 0.

Fri Feb 28 00:13:00 1992  Aubrey Jaffer  (jaffer at Ivan)

	* patchlvl.h (PATCHLEVEL): 12

	* Init.scm: loads JCAL if scm is invoked with name JCAL, JACAL,
	jcal or jacal.

	* Init.scm (ABS): set to MAGNITUDE if FLOATS are supported.

	* gc_mark gc: no longer assume sizeof(short) == 2.

	* config.h (CELL_UP CELL_DN): no longer assume sizeof(CELL) == 8.

	From: Brian Hanson, Control Data Corporation.  brh@ahse.cdc.com
	* scl.c config.h repl.c: partial port to Control Data NOS/VE.

	From: fred@sce.carleton.ca (Fred J Kaudel)
	* repl.c Init.scm makefile.ast: Port to Atari-ST

	* sys.c scm.h eval.c (throw): renamed to lthrow to avoid conflict
	with Gnu CC.

Mon Feb 10 14:31:24 1992  Aubrey Jaffer  (jaffer at Ivan)

	* sys.c (delete-file rename-file): added.

	* sys.c (chdir): now returns #f instead of error.

	* Init.scm: Calls to PROVIDED? inlined so no longer dependent on
	SLIB being loaded.  (set! ABS MAGNITUDE) if inexacts supported.
	Support for slib1b3 added.

	* sys.c (alloc_some_heap): fixed bugs.  One fix from
	bowles@is.s.u-tokyo.ac.jp.

	* eval.c (ceval):  fixed bug with internal (define foo bar) where
	bar is a global.  Put badfun2: back in for better error reporting.

	* patchlvl.h (PATCHLEVEL): 11

Mon Jan 20 16:19:04 1992  Aubrey Jaffer  (jaffer at Ivan)

	* config.c (INITS): comments added.

	From: T. Kurt Bond, tkb@mtnet2.wvnet.edu
	* VMSGCC.COM VMSMAKE.COM: now take arguments.

	From: "Fred Bayer" <bayerf@lan.informatik.tu-muenchen.de>
	* makefile.aztec repl.c: Aztec C (makefile) port.

Fri Jan 17 16:36:07 1992  Aubrey Jaffer  (jaffer at Ivan)

	* sys.c (gc init_storage stack_size): stack_size now of type
	sizet.  init_storage no longer uses it.  gc() now uses it instead
	of pointer to local.  This fixes bug with gcc -O.

	* sys.c (cons cons2 cons2r):  &w;&x;&y; removed because of above
	fix.

Thu Jan 16 22:33:00 1992  Aubrey Jaffer  (jaffer at Ivan)

	* scl.c (real-part): added.

Wed Jan 15 13:06:39 1992  Aubrey Jaffer  (jaffer at Ivan)

	From: "Fred Bayer" <bayerf@lan.informatik.tu-muenchen.de>
	* scl.c repl.c scm.c config.c: Port for AMIGA

	* scm.h (REALP): fixed for SINGLES not defined.

Sat Jan 11 20:20:40 1992  Aubrey Jaffer  (jaffer at Ivan)

	* patchlvl.h (PATCHLEVEL): 8 released.

	* README: added hints for EDITING SCHEME CODE.

	* repl.c (SIGRETTYPE): now int for __TURBOC__.

	* makefile.tur makefile.djg: created.

	* config.h: DJGPP (__GO32__) support added.

	* scm.h (memv): definition added.

Sun Jan  5 00:33:44 1992  Aubrey Jaffer  (jaffer at Ivan)

	* repl.c makefile.* (main): INITS added.

	* scl.c: fixed ASSERT statements with mismatched ARGn and
	arguments.

Thu Dec 19 19:16:50 1991  Aubrey Jaffer  (jaffer at train)

	* sys.c (cons cons2 cons2r): added fix for gcc -O bug.

	* repl.c (LACK_FTIME LACK_TIMES): more messing with these.

	* sys.c config.o (HAVE_PIPE): created.

	* config.h (FLT_RADIX): now #ifdef FLT_RADIX rather than __STDC__.
	Needed for DJGCC.

	* sys.c (DBLMANT_DIG DBL_FLOAT_DIG): now tested for directly
	rather than STDC_INCLUDES.

	* makefile.unix (subr.o): explicit compilation line added.

	* scl.c (truncate -> ltrunc):  Name conflict with DJGCC libraries.

Sun Dec  8 23:31:04 1991  Aubrey Jaffer  (jaffer at Ivan)

	* eval.c (apply): added check for number of args to closures.

Sat Dec  7 01:30:46 1991  Aubrey Jaffer  (jaffer at Ivan)

	* patchlvl.h (PATCHLEVEL): 7

	* sys.c (chdir): THINK_C doesn't support;

	* repl.c: SVR2 needs <time.h> instead of <sys/time.h>

	* repl.c: SVR2 needs LACK_FTIME

	* repl.c: #include <sys/timeb.h> now automatic ifndef LACK_FTIME.

Mon Dec  2 15:42:11 1991  Aubrey Jaffer  (jaffer at Ivan)

	* patchlvl.h (PATCHLEVEL): 5

	* sys.c (intern sysintern): made strings and hash unsigned.  Fixed
	bug with characters > 128 in symbols.

	* scl.c (eqv? memv assv): created if FLOATS is #defined.  From
	boopsy!mike@maccs.dcss.mcmaster.ca (Michael A. Borza).

Mon Dec  2 11:37:11 1991  Aubrey Jaffer  (jaffer at Ivan)

	* patchlvl.h (PATCHLEVEL): 4

	* sys.c (gc_sweep): usaage of pclose() now conditional on unix.

	* MANUAL (chdir): documented.

   from T. Kurt Bond, Adminisoft, Inc. <tkb@MTNET2.WVNET.EDU>:

	* repl.c sys.c (errno): VMS GNU C uses a special hack in <errno.h>
	to get the link-time attributes for the errno variable to match
	those the VMS C run-time library expects (it makes errno a
	preprocessor define so that the variable that the compiler sees
	has a special form that the assember then interprets), so if it is
	VMS and __GNUC__ is defined <errno.h> needs included.

	* setjump.h (SETJUMP LONGJUMP): SETJUMP and LONGJUMP changed to
	setjump and longjump. The VMS linker is case-indifferent.  VMS GNU
	C mangles variable names that have upper case letters in them to
	preserve their uniqueness.

	* sys.c (iprint iprin1): Now inline putc loops instead of calls to
	fwrite for VMS. The VMS `fwrite' has been enhanced to work with
	VMS's Record Management Sevice, RMS.  Part of this enhancement is
	to treat each call to `fwrite' as producing a seperate record.
	This works fine if you are writing to a stream_LF file or an
	actual terminal screen, but if you are writing to a file that has
	implied carriage control (such as a batch log file, or a mailbox
	used for subprocess communication), which is a more common file
	organization for RMS, each call to `fwrite' has a newline appended
	to it.  This causes much of the output to be incorrectly split
	across lines.

	* vmsgcc.com: created.

Sun Dec  1 00:33:42 1991  Aubrey Jaffer  (jaffer at Ivan)

	* patchlvl.h (PATCHLEVEL): 3 released.

	* Init.scm (rev2-procedures): all now supported.

	* Init.scm sys.c MANUAL (flush): flush changed to force-output to
	be compatible with Common Lisp.

	* sys.c (chdir): added.

Wed Nov 27 09:37:20 1991  Aubrey Jaffer  (jaffer at Ivan)

	* patchlvl.h (PATCHLEVEL): 2

	* repl.c (set-errno! perror): added.

	* sys.c (gc): FLUSH_REGISTER_WINDOWS call added.

	* sys.c (open-input-pipe open-output-pipe close-pipe): added.

Mon Nov 25 13:02:13 1991  Aubrey Jaffer  (jaffer at Ivan)

	* patchlvl.h (PATCHLEVEL): 1

	* sys.c (flush): added.

	* repl.c (mytime): macro was missing ().  CLKTCK now defaults to 60.

	* README Init.scm subr.c scm.c repl.c scl.c: From Yasuaki Honda,
	honda@csl.SONY.co.jp, support for Macintosh running Think C.

Sun Nov 24 15:30:51 1991  Aubrey Jaffer  (jaffer at Ivan)

	* scl.c (str2flo): fixed parsing of -1-i.

	* repl.c (repl_driver): from jjc@jclark.com, now checks that
	s_response is non-NULL before INTERNing.

	* subr.c (equal): Now correct for inexacts.  Need to do eqv.

	* scm.h (REALPART): fixed pixel C compiler bug with doubles inside
	`?' conditionals.

	* scl.c (zerop): now checks imaginary half of complex number.

Tue Nov 19 00:10:59 1991  Aubrey Jaffer  (jaffer at Ivan)

	* version scm3c0

	* documentation: changed revised^3.99 to revised^4.

	* example.scm: created from Scheme^4 spec.

	* makefile.msc: -Ox changed to -Oxp to fix over-enthusiastic float
	optimizations.

	* Init.scm (ed): defined.

	* repl.c (def_err_response): UNDEFINED objects don't print out.

Sun Nov 17 23:11:03 1991  Aubrey Jaffer  (jaffer at Ivan)

	* scl.c (vms-debug): now returns UNSPECIFIED.

	* repl.c MANUAL (restart_repl): RESTART-REPL changed to ABORT.

	* repl.c (err_ctrl_c):now clears sig_pending.

Wed Nov 13 23:51:36 1991  Aubrey Jaffer  (jaffer at Ivan)

	* config.h: removed #ifdef sparc #define STDC_HEADERS

	* makefile.bor: added extra '\' to filepath.

	* repl.c (everr): fixed bug with ARGx.

	* repl.c (errmsgs def_err_response): cleaned up error messages.

Sun Nov 10 23:10:24 1991  Aubrey Jaffer  (jaffer at Ivan)

	* released scm3b7

Mon Nov  4 18:36:49 1991  Aubrey Jaffer  (jaffer at Ivan)

	* patchlvl.h (PATCHLEVEL): 6

	* sys.c (idbl2str): tests for Not-a-Number and Infinity added.

	* repl.c scm.h: response system rewritten and integrated with
	error system.

	* scl.c (/): now returns inexacts if integer arguments do not
	divide evenly.

Mon Oct 28 23:44:16 1991  Aubrey Jaffer  (jaffer at Ivan)

	* makefile.unix: can now make float (scm) and integer-only (escm)
	versions in same directory.

	* repl.c (*sigint-response* *arithmetic-response* restart-repl):
	responses for signals added.

	* scl.c (lmin lmax sum difference product divide expt exp log):
	now take mixed types.  expt available in non-FLOATS compilation.

	* repl.c (get-decoded-time): added.  Includes and time functions
	reorganized.

	* sys.c (object-hash object-unhash): added.

Tue Oct 15 00:45:35 1991  Aubrey Jaffer  (jaffer at Ivan)

	* repl.c Init.scm (*features*): moved constant features into
	Init.scm.  Moved tests for numeric features to slib/require.scm.

	* release scm3b1.

	* config.h (ANSI_INCLUDES): redid include files.

	* subr.c scl.c: moved all FLOAT conditionals from subr.c to scl.c.

Wed Oct  9 00:28:54 1991  Aubrey Jaffer  (jaffer at Ivan)

	* release scm3a13.

	* patchlvl.h (PATCHLEVEL): 13

	* Init.scm: "vicinity.scm" changed to "require.scm"

Mon Oct  7 00:34:07 1991  Aubrey Jaffer  (jaffer at Ivan)

	* test.scm: test of redefining built-in symbol and extra ')'
	removed.

	* scm.doc makefile.unix: scm.doc created from scm.1 in
	makefile.unix.

	* VMSBUILD.COM setjump.asm setjump.h (setjmp longjmp jmp_buf): put
	in from comp.sources.reviewed in order to let VMS have full
	continuations.  VMSBUILD.COM is a compile script.

Fri Oct  4 00:05:54 1991  Aubrey Jaffer  (jaffer at Ivan)

	* scl.c(sleep): removed; not supported by MSC (although could be
	written).

	* scm.h config.h (size_t): moved to config.h.

	* sys.c (f_getc): -> lgetc for vax, getc otherwise.

	* patchlvl.h (PATCHLEVEL): 12

Mon Sep 30 01:14:48 1991  Aubrey Jaffer  (jaffer at Ivan)

	* scl.c(sleep): created.

	* repl.c(internal-time-units-per-second get=internal-run-time):
	created

	* repl.c: created from scm.c (shuffled around lots of functions).

Sat Sep 28 00:22:30 1991  Aubrey Jaffer  (jaffer at Ivan)

	* scm.c config.h (char-code-limit most-positive-fixnum
	most-negative-fixnum): created.

Tue Sep 24 01:21:43 1991  Aubrey Jaffer  (jaffer at Ivan)

	* scm.c (software-type); created.

	* scm.c config.h (terms, list-file, library-vicinity,
	program-vicinity, user-vicinity, make-vicinity, sub-vicinity):
	moved to Init.scm and library.

	* scm.c config.h Makefile (PROGPATH): changed to IMPLPATH.

	* Init.scm: created

Fri Sep 20 13:22:08 1991  Aubrey Jaffer  (jaffer at Ivan)

	* patchlvl.h (PATCHLEVEL): 5

	* all: changed declarations to size_t where appropriate.  scm.h
	test preprocessor flag _SIZE_T to determine if already declared.
	size_t should greatly enhance portability to Macintosh and other
	machines.

Tue Sep 17 01:15:31 1991  Aubrey Jaffer  (jaffer at Ivan)

	* scm.c (tmpnam): support for mktemp added.

Mon Sep 16 14:06:26 1991  Aubrey Jaffer  (jaffer at train)

	* scm.c (implementation-vicinity): added.  (program-vicinity) now
	returns undefined if called not within a load.

	* sys.c (call-with-io-file): removed.

	* scm.c (tmpnam): added.

	* scm.c config.h (tmporary-vicinity): removed.

Sun Sep 15 22:21:30 1991  Aubrey Jaffer  (jaffer at Ivan)

	* subr.c scm.h (remainder): renamed to lremainder to avoid
	conflict with math.h on SunOS4.1 (from bevan@cs.man.ac.uk).

Sat Sep  7 22:27:49 1991  Aubrey Jaffer  (jaffer at Ivan)

	* scm.c (program-arguments load): program-arguments created.

	* scm.c (getenv): added getenv and used for program-vicinity and
	library-vicinity.

	* scm.c (program-vicinity): fixed if load_name is NULL.

	* scl.c config.h (substring-move-left! substring-move-right!):
	added under STR_EXTENSIONS flag.

Wed Aug 28 22:59:20 1991  Aubrey Jaffer  (jaffer at Ivan)

	* Sending scm3a to comp.sources.reviewed

	* scm.c (main): prints out feature list at startup.

	* subr.c (eqp lessp greaterp lesseqp greatereqp): now work for
	floats.

	* scl.c (sum difference divide product): moved to scl.c and
	now work for floats.

	* all: all masks with low bits explicity cast to (int).

Sat Aug 17 00:39:06 1991  Aubrey Jaffer  (jaffer at Ivan)

	* sys.c subr.c scl.c (iint2str istr2int istring2number istr2flo
	iflo2str idbl2str): number I/O and conversion to strings rewritten.

	* sys.c (gc_mark): continuations now marked SHORT_ALIGNed. (from
	Craig Lawson).

	* added QuickC support from Craig Lawson.

Tue Jul 30 01:08:52 1991  Aubrey Jaffer  (jaffer at Ivan)

	* config.h: #ifdef pyr added.

	* scm.c MANUAL: vicinity functions added.

Tue Jul 16 00:51:23 1991  Aubrey Jaffer  (jaffer at Ivan)

	* scl.c sys.c: float functions added.

	* Documentation reorganized according to comp.sources.reviewed
	guidelines.

	* sys.c config.h (open_input_file open_output_file open_rw_file):
	file mode string moved to defines in config.h

Thu Jul 11 23:30:03 1991  Aubrey Jaffer  (jaffer at Ivan)

	* sys.c config.h (EBCDIC ASCII) moved to config.h

	* subr.c config.h (BADIVSGNS) moved to config.h

	* scm.h config.h (SRS) moved to config.h

Sun Jul  7 23:49:26 1991  Aubrey Jaffer  (jaffer at Ivan)

	* all: started adding comp.sources.reviewed corrections and
	suggestions.

	* scm.c patchlvl.h (main): PATCHLEVEL now printed in banner.

	* subr.c sys.c: read_integer removed. istring2number created.
	lread and string2number now both use istring2number.

Fri Jun  7 13:43:40 1991  Aubrey Jaffer  (jaffer at Ivan)

	* VERSION scm2e sent to comp.sources.reviewed

	* public.lic: renamed COPYING.

	* scm.c (gc_status): gc_status renamed prolixity.  Now returns old
	value of verbose.  Can take 0 arguments.

	* sys.c (lreadr): added #| common lisp style |# balanced comments.

	* scm.h scm.c sys.c (I/O functions): combined **PORTP and OPENP to
	become OP**PORTP.

	* scm.h sys.c (gc_sweep): moved OPENP to bit in upper half word of
	port cells.

Sat May 25 00:04:45 1991  Aubrey Jaffer  (jaffer at Ivan)

	* scm.c (stack_start_ptr, repl_driver, main, err functions):
	exits removed from all err functions.  all escapes through
	repl_driver.

	* scm.c README (verbose): Now has graded verbosity.

	* scm.c README (quit): Now takes optional argument which is return
	value.

Wed May 22 01:40:17 1991  Aubrey Jaffer  (jaffer at Ivan)

	* code.doc scm.h eval.c (ceval): Rearanged immediate type codes to
	create IXSYMs (immediate extension syms) to allow more than 15
	special forms.  ILOCs now work with up to 32767 in one environment
	frame.  Dispatch is slightly faster for ILOCs in function position.
	ICHRs can be up to 24 bits.

Fri May 10 00:16:32 1991  Aubrey Jaffer  (jaffer at Ivan)

	* scm.h sys.c (gc_mark, gc_sweep): GCMARK moved to bit 8 of CAR
	for some datatypes.

Wed May  1 14:11:05 1991  Aubrey Jaffer  (jaffer at Ivan)

	* patch1 MESSAGE SENT.

	* sys.c (lreadr) from jclark@bugs.specialix.co.uk.jjc: removed
	order evaluation bug when growing tok_buf.

Fri Apr 26 10:39:41 1991  Aubrey Jaffer  (jaffer at Ivan)

	* scm2d RELEASED

	* sys.c (closure) no longer calls ilength (ECONS problem).  Added
	ASSERT before call to closure in eval.

Thu Apr 25 09:53:40 1991  Aubrey Jaffer  (jaffer at Ivan)

	* scm.c (error): created.

Wed Apr 24 16:58:06 1991  Aubrey Jaffer  (jaffer at Ivan)

	* utils.scm: created.

	* makefile (name8s): code from dmason works in makefile.

	* eval.c (evalcar): fixed errobj on (else 3 4) error.
	Inlined function application in (cond ((foo => fun))).

	* sys.c (lprin1): change looped putcs to fwrite.

Wed Apr 24 01:54:09 1991  Aubrey Jaffer  (jaffer at Ivan)

	* sys.c (lreadr): fixed assert for "eof in string".

	* subr.c (lgcd): changed to work with borland C.

	* eval.c (eval): added checks to LAMBDA and LET.

	* eval.c (apply): now checks for null arg1 in lsubr.

Fri Apr 12 00:09:03 1991  Aubrey Jaffer  (jaffer at kleph)

	* config.h scm.h (SCMPTR): created to correct address arithmetic
	on stack bounds under Borland C++.  Borland C++ now runs scm2c.

Wed Apr 10 21:38:09 1991  Aubrey Jaffer  (jaffer at Ivan)

	* sys.c (open_io_file, cw_io_file, file_position, file_set_pos,
	read_to_str) created (IO_EXTENSIONS)

	* config.h (IO_EXTENSIONS): defined

	* sys.c scm.c: lprin1f changed to iprin1

Wed Apr 10 12:58:59 1991  Aubrey Jaffer  (jaffer at Ivan)

	* sys.c (intern): line 850: for(i = alen;0 <= --i;)changed to
				    for(i = alen;0 < --i;).
	This fixed b_pos and v_pos mapping to the same symbol.

Wed Apr  4 00:00:00 1991  Aubrey Jaffer  (jaffer at kleph.ai.mit.edu)

	* released scm2b

Wed Apr  3 22:51:39 1991  Aubrey Jaffer  (jaffer at Ivan)

	* all files: eliminated types tc7_subr_2n and tc7_subr_2xn.
	Replaced with tc7_subr_2o and tc7_subr_1o so that all subr calls
	can be checked for number of arguments.

Tue Apr  2 23:11:15 1991  Aubrey Jaffer  (jaffer at Ivan)

	* code.doc: cleaned up.

Mon Apr  1 14:27:22 1991  Aubrey Jaffer  (jaffer at Ivan)

	* eval.c (ceval): fixed nasty tail recursion bug at carloop:.

	* scm.c (everr): still fixing error reporting.

	* eval.c subr.c: added flag PURE_FUNCTIONAL which removes side
	effect special forms and functions.

	* subr.c (substring): now allows first index to be equal to length
	of string

	* sys.c (lprin1f): dispatches on TYP16 of smobs.

	* scm.h: fixed typo in unused function defs.

Mon Mar 28 00:00:00 1991  Aubrey Jaffer  (jaffer at zohar.ai.mit.edu)

	* scm2a released: too many changes to record.  See code.doc.

Mon Feb 18 21:48:24 1991  Aubrey Jaffer  (jaffer at foxkid)

	* scm.h: types reformatted (TYP6 -> TYP7).

	* eval.c (ceval): Now dispatch directly on ISYMs in ceval.

Fri Feb 15 23:39:48 1991  Aubrey Jaffer  (jaffer at foxkid)

	* sys.c: #include <malloc.h> not done for VMS

Wed Feb 13 17:49:33 1991  Aubrey Jaffer  (jaffer at foxkid)

	* scm.c scl.c: added unsigned declarations to some char *
	definitions in order to fix characters having negative codes.

	* scm.h (MAKISYM, MAKFLAG, ICHR, MAKICHR, MAKINUM): Now cast to
	long so that their calls don't have to.  Changing MAKICHR fixed
	problem in scl.c (string2list) on IBMPC.

	* subr.c (quotient): support for `/' reintroduced; required by
	r3.99rs but not IEEE.

	* subr.c (char functions): added isascii tests for
	char-alphabetic, char-numeric?, char-whitespace?,
	char-upper-case?, and char-lower-case?.  Added test against
	char_code_limit to int2char.

	* subr.c (s_char_alphap): is subr_1 not lsubr.

	* test.scm: added tests for char-alphabetic, char-numeric?,
	char-whitespace?, char-upper-case?, and char-lower-case?.

	* sys.c: most `return;'s eliminated to reduce warning messages.
	Substituted breaks and reordered switch and if clauses.

Sun Feb  3 23:12:34 1991  Aubrey Jaffer  (jaffer at foxkid)

	* scm1-2: released.

	* sys.c (read-char peek-char) added code for EOF.

	* test.scm (leaf-eq?) added and file "cont.scm" removed.  I/O
	tests added.

	* sys.c (I/O functions) now check for input and output ports
	rather than just ports.

	* sys.c (lprin1f): occurences of stdout changed to f.  Newlines
	after printing port removed.

Thu Jan 31 22:52:39 1991  Aubrey Jaffer  (jaffer at foxkid)

	* subr.c (quotient): support for `/' removed; not required.

	* scm.c (wta): message for OUTOFRANGE fixed.

Mon Jan 28 12:45:55 1991  Aubrey Jaffer  (jaffer at foxkid)

	* eval.c (apply): added checks for number of arguments.

	* scm.h (CHECK_SIGINT): checks for blocked SIGINT.

	* sys.c (lprin1): added blocking and testing for SIGINT so that
	output won't hang on VMS.

	* scm.c (repl): added fflush call.

	* scm.c (err_head, wta): added fflush calls to error routines so
	that error message come out in proper order.

