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+	    Release notes for CMU Common Lisp 15e, 25 February 92
+
+
+15e is mainly a bug-fix release; it will probably be the last version 15
+release, and is thus the most stable system you're going to see for a while.
+We're reluctant to call it a "default" release because some things are stably
+broken:
+ -- There still isn't any good stack overflow detection.  Probably stack
+    overflow detection won't appear until the C code rewrite associated with
+    generational GC comes out (version 17 or later.)
+ -- The Alien/foreign function call mechanism is fairly broken.  It doesn't
+    work at all in interpreted code, and DEF-C-ROUTINE doesn't work properly
+    for many argument type signatures.  We've redesigned and reimplemented
+    our foreign interface for version 16.
+
+We are now distributing the CMU CL user manual in Gnu Info format (in
+doc/cmu-user.info.)  You can either have your EMACS maintainer install this in
+the info root, or you can use the info "g(<cmucl root dir>/doc/cmu-user.info)"
+command.  Many thanks to Mike Clarkson (the LaTeXinfo maintainer) who
+volunteered to convert our Scribe documents.
+
+Changes:
+ -- Improved recursive error handling.  Errors during reporting of errors are
+    detected and suppressed.  Other recursive errors are eventually detected,
+    and hopefully recovered from.  This should eliminate some "recursive map
+    failure (stack overflow?)" errors.
+ -- Fixed a bad declaration in CLX which caused an array index error on
+    font attribute queries (such as CHAR-WIDTH.)
+ -- Fixed interpreted (typep x '(and ...)) to not always return NIL.
+ -- Fixed interpreted CLOS methods to work once again.
+ -- Fixed PROFILE to work again, now that argument count information may be
+    missing.
+ -- Changed NCONC to signal an error if a non-null ATOM appears other than
+    as the last argument.
+ -- Changed FEATUREP to signal an error if it is passed a list form with a
+    strange CAR.
+ -- Do type checking on the arguments to %PUTHASH so that
+    (setf (gethash foo 'bar) x) doesn't get a bus error.
+ -- Changed LET* and &AUX to allow duplicate variable names.
+ -- Fixed DEFTYPE to properly invalidate type system caches so that type
+    redefinitions predictably take effect.
+ -- Improvements to MIPS disassembler database.
+
+
+	    Release notes for CMU Common Lisp 15d, 2 February 92
+
+These release notes cover changes since the beta release of version 15b on 6
+June 91.  Execpt for Miles Bader's portable disassembler and a few minor
+performance enhancements, this is mostly a bug-fix release.  We've been
+working on ANSI complaince, foreign function interface and more advanced
+compiler optimizations, but we're not going to inflict that on the general
+public just yet.
+
+
+			     GENERAL SYSTEM CODE
+
+Bug fixes:
+ -- (SETF AREF) now checks to make sure that the new value is of the correct
+    type.
+ -- Improved checking for invalid syntax in DEFSTRUCT.  In some cases, syntax
+    errors would cause cryptic internal errors due to inadequate type
+    checking.
+ -- DRIBBLE now monitors *ERROR-OUTPUT* (in addition to *STANDARD-OUTPUT*).
+ -- Bignum printing now works correctly in base 36.
+ -- Fixed EXPT to deal with SINGLE-FLOAT x SINGLE-FLOAT arg type combination.
+ -- Fixed TRUNCATE to handle the SINGLE-FLOAT/DOUBLE-FLOAT case.
+ -- The PROFILE package works once again.
+
+Enhancements:
+ -- A new retargetable disassembler provides DISASSEMBLE support on the SPARC,
+    and also greatly improved disassembly on the MIPS.  The output is
+    annotated with source-code correspondences if debug-info permits.
+ -- Added INLINE MEMBER declarations in definitions of the set functions
+    (UNION, etc.) so that when the set functions are inlined, the MEMBER calls
+    will also.
+ -- Merged Lange's improved type declarations for nthcdr/butlast/nbutlast.
+    Also, NTH-VALUE now doesn't cons for non-constant N less than 3.
+ -- The loader now supports appending fasl files.  You can:
+    	cat a.fasl b.fasl c.fasl >all.fasl
+ -- Added :UNIX to the features list.
+
+The new variable EXT:*TOP-LEVEL-AUTO-DECLARE* controls whether assignments to
+unknown variables at top-level (or in any other call to EVAL of SETQ) will
+implicitly declare the variable SPECIAL.  These values are meaningful:
+     :WARN  -- Print a warning, but declare the variable special (the default.)
+      T     -- Quietly declare the variable special.
+      NIL   -- Never declare the variable, giving warnings on each use. (The
+               old behavior.) 
+
+The reader now ignores undefined read macro errors when *read-suppress* is T.
+All reader character lookup tables are now CHAR-CODE-LIMIT in size.  Formerly,
+some where only 128.  In the standard readtable, these additional characters
+are all undefined.
+
+There are various changes in the DEBUG-INTERNALS interface related to
+breakpoint support, but we haven't yet implemented a satisfactory user
+interface to breakpoints.  Changed name of DI:DO-BLOCKS to
+DI:DO-DEBUG-FUNCTION-BLOCKS.  Added DI:FUNCTION-END-COOKIE-VALID-P and
+DI:DEBUG-FUNCTION-START-LOCATION.
+
+This release fixes a few problems with Aliens, but they are still pretty
+broken.  In particular, Alien and C interface operations don't work at all in
+interpreted code.  We are in the process of integrating a new-and-improved
+implementation of Aliens that works much more smoothly with C.
+
+
+				 COMPILER
+
+Enhancements:
+ -- Various SPARC-specific reductions in spurious type checks and coercions.
+ -- FTYPE declarations on local functions are now propagated to the variables
+    of the local definition.
+ -- Improved representation selection by not totally ignoring references by
+    move VOPs.  This is particularly useful for avoiding spurious number
+    consing of float arguments that are passed on as arguments.
+ -- The warning about assignments to the arguments of functions having FTYPE
+    declarations is now suppressed when the FTYPE declaration gives no useful
+    information.
+ -- Improved readability of *COMPILE-PROGRESS* output.
+ -- Fixed TYPES-INTERSECT to consider any supertype of T to definitely
+    intersect with anything (including unknown or not-yet-defined types.)
+
+Bug fixes:
+ -- Fixed some bugs in dead code deletion.
+ -- Lambdas with &KEY and no specified keywords are now compiled correctly
+    (instead of the &KEY being ignored.)
+ -- The compiler now knows that INTERN can return NIL as its second value.
+ -- Global FTYPE declarations on DEFSTRUCT slot accessors are now quietly
+    ignored, instead of causing the structure definition to be removed.
+ -- Fixed a problem with resulting from an interaction between block
+    compilation and global FTYPE declarations.
+ -- Fixed TAGBODY not to consider NIL to be a tag.
+ -- Fixed an internal error during register allocation which could happen when
+    compilation-speed > speed.
+ -- If we undefine a structure type, unfreeze it also.
+ -- Fixed TYPEP SATISFIES to always return T-or-NIL, regardless of what the
+    predicate returns.
+
+PCL/CLOS:
+ -- Added generalized source context parsing with EXT:DEF-SOURCE-CONTEXT.
+    Added a parser for DEFMETHOD that gets qualifiers and specializers.
+ -- FUNCALLABLE-INSTANCE-P is now compiled much more efficiently.
+ -- Fixed SET-FUNCTION-NAME to correctly set the name of interpreted methods,
+    instead of clobbering the name of an internal interpreter function.
+
+
+				  HEMLOCK
+
+Bug fixes:
+ -- Changed X font specs in the generic site-init file to use point size
+    instead of pixel size so that they work on 100dpi devices. 
+ -- Added :INPUT :ON wm-hints to Hemlock windows, which is necessary to
+    receive input in OpenLook windowing systems.
+ -- Fixed Lisp mode indentation for FLET&c to check that we are actually in
+    the first arg form before doing funny indentation.  Generalized to
+    reference the variable "Lisp Indentation Local Definers", and also to
+    recognize LABELS (as well as MACROLET and FLET.)
+ -- When we reallocate string-table vectors to grow them, clear the old vector
+    so that it won't hold onto garbage (in case the vector was in static
+    space, but pointed to dynamic values.)  This was a major cause of memory
+    leakage in Hemlock.
+ -- Fixed sentence motion to work at the end of the buffer.
+
+Enhancements:
+ -- The site file now contains a template for file directory translation (for
+    "Edit Definition"), and some of the comments have been improved.
+ -- There's a new "Buffer Modified Hook" function that raises the "Echo Area"
+    window when it becomes modified.  You can control this with the Hemlock
+    variable: "Raise Echo Area When Modified".
+ -- In "Edit Definition" and related commands, before doing directory
+    translations, try a probe-file of the source file first.  This can reduce
+    the number of translations needed.
+ -- Added DEFINDENT's for the "WIRE" package.
+ -- Made the X visual bell look less spastic by adding a finish-output.
+ -- The termcap parser now recognizes entries for things like begin/end bold,
+    underline, etc.  Fixed a problem with font halding in TTY redisplay.
+ -- The MH interface now uses the correct name for the MailDrop profile
+    component.
+ -- The netnews interface has been improved in various ways, including the
+    addition of server timeouts, but should still be considered experimental.
+
+
+	    Release notes for CMU Common Lisp 15b, 19 October 91
+
+These release notes cover changes since the beta release of version 14c on 6
+June 91.  SPARCstations and Sun4's are now supported under SunOS (as well as
+Mach), which makes CMU CL more usable outside of the CMU environment.  CMU CL
+also runs on Mach (or OSF/1) DECstations, and IBM RT support is coming real
+soon now.
+
+
+			    GENERAL SYSTEM CODE
+
+Bug fixes:
+ -- MAKE-ARRAY now to allows :INITIAL-CONTENTS any kind of of sequence, not
+    just a list.
+ -- VECTOR-PUSH and VECTOR-PUSH-EXTEND now return the original fill
+    pointer, not the new fill pointer.
+ -- VECTOR-POP now returns the value indexed by the new fill pointer, not
+    the original fill pointer.
+ -- Fixed two bugs in bignum division.
+ -- FORMAT-PRINT-NUMBER now correctly inserts commas for negative numbers
+    (don't print -,123).
+ -- Fixed GET-SETF-METHOD to only inhibit setf macros when there is a local
+    function, not also when there is a local macro.
+ -- Changed the debugger to use *READ-SUPPRESS* when skipping over top-level
+    forms in the source file to prevent spurious read errors.
+ -- In the printer, deleted an incorrect and questionably optimal
+    optimization of symbol package qualification.
+ -- When printing characters, prefer the semi-standard character-names
+    NEWLINE, ESCAPE and DELETE to the old LINEFEED, ALTMODE and RUBOUT.
+ -- Fixed one-off error in list REMOVE-DUPLICATES :FROM-END.  Fixed
+    SUBSTITUTE & friends to pass arguments to the TEST in the right order.
+    Fixed SUBSTITUTE not to randomly apply the KEY to the OLD value.  Changed
+    LIST NSUBSTITUTE & friends to work in the :FROM-END case.
+ -- Several bug-fixes to RUN-PROGRAM and subprocess I/O.
+ -- Fixed all recursive READ calls in sharp-macros to specify eof-error-p T, so
+    that EOF errors are signalled when appropriate.
+ -- The REMOTE RPC protocol (used for slave control) can now send bignums.
+ -- Passing of unused arguments to interpreted functions now works.  Previously
+    the variables would be bound to the wrong arguments.
+ -- Many fixes to the time parsing and printing extensions.
+
+X3J13 cleanups:
+ -- Added #P pathname read syntax, and changed the pathname printer to use it.
+ -- Added :KEY argument to REDUCE.
+
+Enhancements:
+ -- Added code to compile the argument to TIME when possible, and print a
+    warning when it isn't.  Optimized the TIME macro to keep the consing
+    overhead of using it zero.
+ -- Changed all places absolute pathnames were used to indirect search-lists,
+    mostly library:.  "lisp" must now be findable on your PATH for Hemlock to
+    be able to start slaves.
+ -- Increased readability of DESCRIBE function output by printing function and
+    macro doc strings before arg and result info.
+ -- The CMUCLLIB search path environment variable is now used to find lisp.core
+    and other library files, instead of always assuming the path
+    /usr/misc/.cmucl/lib.
+
+
+				 COMPILER
+
+Bug fixes:
+ -- EVAL now uses the constant value recorded in the compiler environment
+    that compile-time references to constants works better.  Now
+    (defconstant a 3) (defconstant b (+ a 4)) works again.
+ -- Don't try to infer the bounds of non-simple arrays, since they can change.
+ -- Fixed some problems with block compilation, maybe-inline functions and
+    unused function deletion.
+ -- DEFMETHODs can now use &ALLOW-OTHER-KEYS without killing the compiler.
+ -- Fixed VALUES declaration to work correctly when zero values are specified.
+ -- The FORMAT transform now warns if there are to many or too few args.
+ -- Changed SYMBOL-MACRO-LET to SYMBOL-MACROLET.
+
+X3J13 cleanups:
+ -- Make all non-symbol atoms self-evaluate.
+
+Enhancements:
+ -- Made the default for COMPILE-FILE's :error-file argument be nil.
+ -- Changed notes about incompatible changes in function arguments lists to be
+    a warning rather than a note.
+ -- Source-level optimization efficiency notes now print out a
+    transform-specific string to describe what the transform was trying to do,
+    instead of just saying "unable to optimize."
+
+
+				  HEMLOCK
+
+This is version 3.5.
+
+Note: The default value of "Slave Utility" is now just "lisp" which hopefully
+will be found on path:.  If you don't have lisp on your path, you need to set
+"Slave Utility" to the full pathname of lisp, /usr/misc/.cmucl/bin/lisp on CMU
+machines.
+
+Bug fixes:
+ -- Under TTY screen management, a MAKE-WINDOW - DELETE-WINDOW sequence now
+    leaves the screen unchanged.
+ -- Fixed some character attribute constants to make 8-bit chars work.
+ -- "Center Line" now works when invoked on the last line of the buffer.
+ -- Fixed "Move Over )" to use a permanent mark instead of a temporary mark
+    because it deletes text.
+ -- Fixed sentence motion to be able to move to the end of the buffer.
+ -- Fixed the hemlock banner in the status line to not have "!" after
+    the date.
+
+Enhancements:
+ -- Removed the definitions of the obsolete COMMAND-CHAR-BITS-LIMIT and
+    COMMAND-CHAR-CODE-LIMIT.
+ -- Modified "Visit File" to issue a loud message whenever another buffer
+    already contains the file visited. The quiet message often went unnoticed,
+    defeating its purpose.
+ -- The definitions in FLET, LABELS and MACROLET are now indented correctly.
+ -- Added DEFINDENT's for the "DEBUG-INTERNALS" interface.
+ -- Modified Lisp indentation to check if the mark in was in a string context.
+    If it is, then we go to the column after the opening double quote.
+    Otherwise, we use the first preceding non-blank line's indentation.  This
+    fixes the problem with doc strings and ERROR strings which got indented
+    respectively at the beginning of the line and under the paren for the ERROR
+    call.
+ -- Added some prototype netnews support.  Details to be anounced later.
+ -- Added font support for the TTY.  Allow active region highlighting and open
+    paren highlighting when on the TTY, as they now work.
+ -- Changed the compile-in-slave utilities to count notes and display in
+    completion message.  Also fixed not to print echo area messages "Error in
+    NIL ..."
+
+New commands:
+
+"Fill Lisp Comment Paragraph"	Lisp: M-q
+   Fills a flushleft or indented Lisp comment, or lines all beginning with the
+   same initial, non-empty blankspace.  When filling a comment, the current
+   line is used to determine a fill prefix by scanning for the first semicolon,
+   skipping any others, and finding the first non-whitespace character;
+   otherwise, the initial whitespace is used.
+
+"Shell Complete Filename"	Process: M-Escape
+    In a shell buffer, attempts to complete the filename immediately before
+    point.  The commands that start "Process" buffers with shells establish a
+    stream with the shell that tries to track the current working directory of
+    the shell.  It uses the variable "Current Working Directory" to do this.
+    For it to work, you should add the following to your .cshrc file:
+       if ($term == emacs) then
+	  alias cd 'cd \!* ; echo ""`pwd`"/"'
+	  alias popd 'popd \!* ; echo ""`pwd`"/"'
+	  alias pushd 'pushd \!* ; echo ""`pwd`"/"'
+       endif
+
+"Manual Page"
+    Runs man(1) in a scratch buffer and displays it in the current window.
+
+"Typescript Slave Status"	Typescript: H-s
+   Interrupt the slave and cause it to print status information.
+
+
+Hemlock-internals changes:
+ -- CREATE-WINDOW-FROM-CURRENT now creates a window according to its new
+    proportion argument instead of simply splitting the current window in two.
+    It returns nil without doing anything if either window is too small.
+ -- WINDOW-GROUP-CHANGED no longer unifies the sizes of window when the
+    user resizes a group.  It now tries to distribute the new size of the group
+    according to the proportions of the old size consumed by the windows.
+ -- Changed ARRAY-ELEMENT-FROM-MARK to use AREF for the Netnews stuff.  I
+    documented this to be an internal interface since a few other modes use it.
+ -- WRITE-FILE now takes an :append argument.
+ -- Modified %SET-MODELINE-FIELD-FUNCTION to allow its function argument to be
+    a symbol or function since the purpose is to FUNCALL the thing.  Since the
+    new system is up to spec on the disjointedness of functions, this needed to
+    be fixed for usefulness.
+
+
+	Release notes for CMU Common Lisp 14c, 6 June 91
+
+  ** The FASL file format has changed, so all files must be recompiled. **
+
+These notes describe changes since the beta release of 3 February 91.  This is
+the first CMU CL release to run on Mach SPARCs as well as on PMAXen (DECstation
+3100 or 5000).  Version 14c will go out to both beta and default, since there
+is currently no default release.
+
+This release has a substantial space reduction due to compiling with debug-info
+1 and reduced safety.  The core is currently 19.2 meg, which is 7 meg smaller
+than the last beta release (despite added functionality.)
+
+Major parts of the system are now compiled with no error checking.  Users
+should not notice any reduction in safety, since user visible interfaces are
+supposed to be fully checked.  Standard functions that users can cause to get
+unbound symbol or array index errors needed to be changed to either do explicit
+error checks or locally use a safe policy.  Some of these cases may have been
+missed.  Let us know if you get any less-than-informative error messages
+(segmentation violation) inside standard functions.
+
+
+New packages:
+
+The X based graphical inspector is now available.  It now uses standard
+fonts (courier) and has a bigger help window.
+
+An improved version of the profile package (previously in the library) is now
+in the core.  It now compensates for recursive calls or nested calls, and
+interacts better with TRACE and function redefinition.  The old profile
+documentation is in:
+    /afs/cs/project/clisp/library/profile/profile.doc
+
+
+Code:
+
+Argument type checking for Common Lisp functions is now driven by the
+compiler's function type database (the types reported by DESCRIBE.)  This means
+that some type errors might be detected that were previously unnoticed.
+
+Changed the internal WITH-ARRAY-DATA macro to do bounds checking.  This causes
+various string functions to give better error messages when an :END arg is out
+of bounds or :START is greater than :END.
+
+Tuning:
+    Some tuning in SYSTEM:SERVE-EVENT which reduces consing and speeds up
+    Hemlock and terminal I/O.
+
+    Changed GET-INTERNAL-REAL-TIME to subtract out the time of the first
+    call to minimize the probability of bignum results.  Also some other tuning
+    that reduced the consing of this function to 0.
+
+    Tuned bignum code and added declarations to reduce number consing.
+
+
+DEFSTRUCT:
+    Fixed default-structure-print to work when *print-circle* is T.
+    Merged fix to DEFSTRUCT constructor parsing that allows multiple default
+    constructors, or none at all.
+
+Merged bug fixes from old RT system:
+    STANDARD-CHAR-P no longer returns T for #\return.
+
+    Fixed a bug in format regarding ~@*.
+
+    Fixed the read-eval-print loop to frob +, ++, +++ correctly.
+
+    Fixed a bug in Y-OR-N-P.  It was calling WHITESPACEP on a symbol.
+
+    Fixed READ-QUOTE to call READ with t for eof-errorp which it previously
+    failed to do.  fixed READ-PRESERVING-WHITESPACE to no longer screw with
+    eof-errorp based on recursivep
+
+Package system:
+    Changed DEFPACKAGE to expand into stuff that will have the package effect
+    at compile time as well as at load time.
+
+    Fixed DEFPACKAGE to deal more correctly with finding symbols that must
+    exist.
+
+    Fixed package system code to not destructively modify the USE, USED-BY and
+    SHADOWING-SYMBOLS lists so that they don't get retroactively modified when
+    we hand them off to the user.
+
+    Also, in SHADOW, when symbols is NIL, shadow no symbols, not NIL.
+
+    Fixed a bug in RENAME-PACKAGE that happened when the new name was one of
+    the old nicknames.
+
+Streams:
+    Tweaked handling of LISTEN a bit to allow READ-CHAR-NO-HANG to work
+    correctly.  Fixed the listen method for concatenated streams.  It failed to
+    step to the next stream when the current one hit eof.
+
+    Make two-way streams force-output on the output side before passing any
+    input requests on to the input side.  Made *standard-output* a two-way
+    stream so that reading *standard-input* will force output on standard
+    output.  This eliminates the need for explicit calls for FORCE-OUTPUT when
+    prompting.
+
+    Some tuning and bug fixes to FD-STREAMS (file descriptor streams) which are
+    used for file I/O (and now for communication with the X server.)  Also, now
+    OPEN complains if you try to open a non-writable file for output with
+    :RENAME or :RENAME-AND-DELETE.  Previously this would succeed as long as
+    the directory was writable.  SYSTEM:READ-N-BYTES on FD streams is now more
+    efficient, but does *not* wait using SERVE-EVENT; it blocks instead.
+
+TRACE:
+    Use FORCE-OUTPUT instead of FINISH-OUTPUT to prevent gratuitous slowdowns
+    when running in a slave.
+
+    If we enter trace recursively (due to the printer calling the traced
+    function), then just quietly call the function, instead of signalling an
+    annoying "unable to trace" error.
+
+LOAD:
+    Changed load to look at the file contents for the "FASL FILE" header to
+    determine whether to fasload or slow load, instead of forcing use of a
+    single fasl file type.  Also, when the given filename doesn't exist and
+    doesn't have a type, try ``fasl'' in addition to the machine specific fasl
+    file type.  Eliminated the "feature" whereby zero-length fasl files were
+    considered to be valid (doing nothing).  Now if you try to load a file with
+    a fasl file type, but that doesn't have a valid fasl header, then you will
+    get an error (proceeding loads as a source file.)
+
+    When the loader prints comments about loading progress, the number of
+    leading semicolons is now the depth of recursive loading.
+
+    Added a CONTINUE restart in LOAD that returns NIL. 
+
+GC:
+    Fixed some bugs in control of garbage collection that should solve some
+    problems with GC failing to be triggered automatically.  Also, GC no longer
+    implicitly reenables automatic GC if it has been disabled with GC-OFF.
+
+    Changed the default GC notify function to not beep.  The old behavior can
+    still be obtained by setting *GC-VERBOSE* to :BEEP.  Note that this only
+    affects use on TTYs, since slave GC notification works differently.
+
+    Wrapped a without-interrupts around the guts of maybe-gc so that the notify
+    messages and state updates don't get seperated from the actual gc.
+
+    Removed the icache flushing stuff from GC, because it was unneeded (and
+    sometimes printed annoying messages that it didn't work).
+
+X3J13 cleanups:
+    The non-destructive string functions now accept characters as well as
+    strings and symbols.
+
+    MACROEXPAND now expands symbol macros.
+
+    Now almost all Common Lisp functions which are SETFable have a (SETF name)
+    function.  The exceptions are functions where it makes no sense (LDB,
+    GETF), and a few other functions (GET, GETHASH.)  Now SETF of APPLY works
+    for any function which has a setf function.
+
+    Changed GET-SETF-METHOD to ignore setf macros (always global) when there is
+    a local macro or function of the place function.  [An x3j13 cleanup]
+
+    Fixed the LOOP THEREIS keyword.  Changed a null test in LOOP into an endp
+    test.
+
+Other bug fixes:
+    Fixed sequence functions with output type specifiers to handle DEFTYPE'ed
+    types and other complex types correctly.  (COERCE still can't hack
+    DEFTYPEs, though.)
+
+    Fixed typep of (satisfies (lambda (obj) ...)) to coerce the form into a
+    function so that "object not function" errors don't result.
+
+    Fixed DOCUMENTATION to return only one value.
+
+Enhancements:
+    ROOM is now much more verbose, displaying a breakdown of memory usage by
+    object type.
+
+    Changed the printer to print the name of code objects and the value of
+    value cells.
+
+
+CLX:
+
+Modified EXT:OPEN-CLX-DISPLAY to set XLIB:DISPLAY-DEFAULT-SCREEN to the
+screen specified by the user before returning the display.
+
+Merged in a bug-fix to EVENT-LISTEN to make it return the right number of
+events when called when there is a current event (i.e. in an EVENT-CASE.)
+
+Fixed the CLX X interface to be much more efficient, as well as fixing some
+bugs.  The low-level I/O to the server is now faster and conses much less.
+Enabled some code speeds up pixarray read/write (though it could still be much
+better.)  Also, eliminated redundant type checking and fixed some broken
+declarations.  This fixes problems with CLX sometimes not working with some X
+servers (like the RT server.)
+
+
+Compiler:
+
+Bug fixes:
+    Fixed incorrect argument type information for some standard Common Lisp
+    functions.
+
+    Fixed PROCLAIM to work correctly when the argument isn't a constant.
+
+    Fixed the DEBUG optimize quality to be called DEBUG instead of DEBUG-INFO.
+
+    Fixed the compiler to not flame out if it sees a SATISFIES type specifier
+    where the predicate function is undefined, and generally to deal better
+    with testing whether a compile-time constant is of some type that may not
+    be properly defined yet.
+
+    Fixed a number of bugs in the handling of closures over top-level
+    variables.
+
+    Fixed a problem with semi-inline functions.
+
+    The compiler note count is no longer incremented when notes are suppressed
+    by INHIBIT-WARNINGS 3.
+
+    Some fixes that should eliminate spurious undefined-function warnings.  In
+    particular, definitions of functions in non-null lexical environments will
+    be noticed.
+
+    Also, now if a function is defined incompatibly with previous calls, the
+    warning will have proper source context.
+
+    Fixed a bug in accessors for 1,2, and 4 bit arrays that was causing #* to
+    generate incorrect bit vectors.
+
+    Changed the type system to consider #(:foo :bar) to be a subtype of 
+    (vector keyword).  In other words, array subtype relations are determined
+    according to the specialized element types actually present in this
+    implementation, rather than assuming that all element types can be
+    discriminated.
+
+    Fixed a problem that could cause type checks to be spuriously deleted in
+    some contexts where there is a local change in the SAFETY optimization
+    policy.
+
+DECStation (PMAX) specific changes:
+
+    Representation conversion of a SAP (system area pointer) to a pointer
+    representation now results in an efficiency note.
+
+    Fixed EQL (and =) on integers to not unnecessarily cons a word-integer
+    argument just because one argument is known to be a fixnum.
+
+    New version of the assembler with instruction scheduling (no-op deletion)
+    support.  This reduced the size of the core by 1.3 meg, and makes
+    everything run faster too.
+
+    Fixed TRUNCATE on floats to truncate instead of rounding.
+
+SPARC notes:
+    The SPARC port is not yet as highly tuned as the PMAX port.  In particular,
+    no instruction scheduling is done yet.  This is probably a 10% performance
+    penalty.
+
+Enhancements:
+    Made forms within a LOCALLY be recognized as "top-level" so that subforms
+    can be compiled separately.
+
+    The compiler now ignores assignments to special variables when determining
+    which representation to use for a variable.  Also, we don't print
+    representation selection efficiency notes about coercion that are due to
+    error checking code.
+
+    Added support for the EXT:CONSTANT-FUNCTION declaration (already in the
+    documentation.)
+
+    When a DEFUN is compiled and the name has a FTYPE declaration, then a note
+    is printed if any arguments to the function are assigned to (i.e. SETQ) in
+    the body, as this inhibits application of the FTYPE declaration to the
+    argument variables.
+
+    (<mumble>-P x) structure predicates are now just as efficient as
+    (TYPEP x '<mumble>).
+
+    Added type inference methods for sequence functions, and various functions
+    that return an argument as their result value.
+
+    A number of improvements to register allocation.
+
+    Added a new optimization of MULTIPLE-VALUE-CALL which converts MV calls
+    having a known number of arguments into MULTIPLE-VALUE-BIND/FUNCALL.
+    Combined with some other existing optimizations, this allows functions like
+    to be efficiently inline expanded (i.e. the APPLY turns to a FUNCALL):
+	(defun foo (&rest x)
+	  (apply #'glorp x))
+
+    Reduced the size of debug information for OPTIMIZE DEBUG <= to 1.
+    If debug-info is < 1, then don't dump debug-args or function type.
+
+    Disabled the compiler's internal consistency checking by default.  These
+    phases are only useful for locating compiler bugs.
+
+X3J13 cleanups:
+    The :VERBOSE and :PRINT keyword arguments are now supported by
+    COMPILE-FILE.  The :PROGRESS keyword is a CMU extension that provides an
+    even higher level of verbosity.  The *COMPILE-VERBOSE*, etc., variables are
+    also now supported.
+
+    Changed declaration processing to treat FUNCTION declarations as ordinary
+    variably type declarations.  The old semantics is still obtained when the
+    second arg to the declaration is a list (as it always would be in the old
+    usage.)
+
+Block compilation:
+    Added new START-BLOCK and END-BLOCK declarations to allow portions of a
+    file to be block compiled (instead of only entire files.)  This mechanism
+    also allows the entry points to a block to be specified, allowing improved
+    compilation of non-entry-point functions.  Fixed many bugs that appeared
+    once block compilation was actually used.
+
+    COMPILE-FILE now has :ENTRY-POINTS and :BLOCK-COMPILE keywords.
+    :BLOCK-COMPILE NIL will totally inhibit compile-time resolution of function
+    names (including self-calls.)  The default (:SPECIFIED) allows compile time
+    resolution, but still compiles one top-level form at a time, preventing
+    local calls between top-level forms.  In this mode, a
+        (BLOCK-START Entry-Point*)
+    declaration will start block compilation.  Block compilation is terminated
+    by BLOCK-END, or the BLOCK-START of the next block.
+
+    See also the COMPILE-FILE doc string.
+
+
+Context sensitive declarations:
+    Added the OPTIMIZE-INTERFACE declaration, which is just like OPTIMIZE, but
+    specifies the policy for function argument syntax checking and checking of
+    any declared argument types, allowing it to be distinct from the general
+    compilation policy.  This allows debugged code to be compiled with lowered
+    safety in its "guts", while still doing checking on the arguments that
+    users may supply (incorrectly.)  Any quality not separately specified
+    defaults to the normal OPTIMIZE quality.
+
+    Fixed WITH-COMPILATION-UNIT keyword to be :OVERRIDE instead of :FORCE.
+    Also, added :OPTIMIZE and :OPTIMIZE-INTERFACE for changing the "global"
+    compilation policy within the dynamic extent.
+
+    Added :CONTEXT-DECLARATIONS, which provides a way to insert declarations
+    conditional on pattern matching of the context in which the definition
+    appears.  So you can compile all external functions safe, or whatever.  See
+    the doc string for WITH-COMPILATION-UNIT.
+
+
+Hemlock:
+
+Tuning:
+    Changed typescript streams to cache the line length.  This greatly speeds
+    up slave output.
+
+    Several changes to allow redisplay to be delayed until process output (i.e.
+    in a shell buffer) is complete.  This allows the editor to catch up with
+    output by only displaying the final state of the shell buffer, instead of
+    forcing every line of output to be displayed.  This is very nice with slow
+    terminals or large outputs.
+
+TTY redisplay:
+    Changed TTY redisplay to get the terminal size and speed from Unix using
+    the appropriate "ioctl" calls.  The speed of a PTY (and hence any telnet or
+    MCN connection) is infinite by default.  For best results with TTY
+    redisplay, it is crucial to set the terminal speed with the Unix "stty"
+    command:
+    	stty 2400
+    	stty 9600 etc.
+
+    Setting the speed allows the editor to keep in synch with the terminal so
+    that typing a command will temporarily abort redisplay until until there is
+    no typeahead.  This way, if you type C-v C-v in succession, output of the
+    first screen will stop when you type the second C-v.
+
+    Fixed several bugs in TTY redisplay.  "Unexpected zero transition delta" is
+    gone.  Also, fixed some problems with the screen not being updated properly
+    after redisplay has been aborted.  (When you type several commands in quick
+    succession.)
+
+    REDISPLAY now returns T, NIL or :EDITOR-INPUT.  T is returned when
+    redisplay changed the screen.  NIL is returned when there was no change.
+    :EDITOR-INPUT is returned when redisplay tried to update the screen, but
+    was aborted due to pending editor input.
+
+    Fixed REDISPLAY-WINDOWS-FROM-MARK so that process output won't cause
+    redisplay when we aren't in Hemlock.
+
+Bug fixes:
+    Modified MAKE-BUFFERS-FOR-TYPESCRIPT to make sure the user supplied
+    slave-name is free for use, so we don't clobber currently existing slaves.
+
+    Fixed a bug in completion mode (didn't previously work in the new-compiler
+    system.)
+
+Enhancements:
+    There is a new command "Set Buffer Writable", and the obsolete
+    command "Connect to Registered Eval Server" has been removed.
+
+    Added "Slave GC Alarm" variable (default :MESSAGE) which controls how
+    obnoxious the slave GC notification is.  Other values are like for "Input
+    Wait Alarm", :LOUD-MESSAGE and NIL.
+
+    Made the slave switch demon set debug:*help-line-scroll-count* to
+    most-positive-fixnum, since the editor can do the scrolling for us.
+
+
+SYSTEM, EXTENSIONS:
+
+Made SYSTEM:BITS, BYTES, etc., be defined in the null environment so that they
+can be inline expanded.  This was causing spurious consing in various system
+code.
+
+Fixed EXT:CONNECT-TO-INET-SOCKET to check that we successfully looked up the
+name so that we don't get segment violations on unknown hosts.
+
+Fixed DI:FUNCTION-DEBUG-FUNCTION (though it still returns the XEP.)  
+Some fixes to DI: condition report methods
+
+Added support for the MACH:TIOCGWINSZ and MACH:TIOCSWINSZ ioctls.
+In the Unix interface, extended the length of pathnames from 64 to 1024.
+
+EXT:ONCE-ONLY now does sequential variable binding.  This can't cause any
+problems, since all names are gensyms, and is often useful.
+
+Added :TIMEOUT argument to SYSTEM:MAKE-FD-STREAM.  The SYSTEM:IO-TIMEOUT
+condition is signalled if a timeout is specified and exceeded.
+
+----------