xemacs-beta: etc/NEWS comparison

comparison etc/NEWS @ 371:cc15677e0335 r21-2b1

Import from CVS: tag r21-2b1

author	cvs
date	Mon, 13 Aug 2007 11:03:08 +0200
parents	a4f53d9b3154
children	6240c7796c7a

comparison

equal deleted inserted replaced

-:bd866891f083
+:cc15677e0335
 this program or to its predecessors "Era" and "Lucid Emacs".  The
 predecessor of all these program is called "Emacs 18".  When no
 particular version is implied, "Emacs" will be used.
+* Changes in XEmacs 21.2
+========================
+None yet.
 * Changes in XEmacs 21.0
 ========================
 ** XEmacs has been unbundled into constituent installable packages.
 See the Info documentation under "Packages" for more information.
 See the file `etc/PACKAGES' in the distribution for a partial list of
 packages available at the time of the 21.0 release.
-IMPORTANT NOTE: XEmacs currently expects the user-specific package
-hierarchy in ~/.xemacs.  This will probably change to
-~/.xemacs/packages in a future version of XEmacs.
 ** XEmacs is now supported under Microsoft Windows 95/98 and Windows
 NT operating systems.  For starters, look at the XEmacs on Windows FAQ
 at <URL:http://jagor.srce.hr/~hniksic/xemacs-on-windows-faq.txt>.  To
 discuss Windows-specific issues, subscribe to the mailing list at
 .xemacs-options from your .emacs.
 ** When the Zmacs region is active, `M-x query-replace' and the other
 replace commands now operate on the region contents only.
-** XEmacs now is able to choose X visuals and use private colormaps.
+** Using the new `-private' option, you can make XEmacs use a private
-The '-visual <visualStr>' command line option or the '.EmacsVisual'
+colormap.
-Xresource controls which visual XEmacs will use, and
-'-privateColormap' or '.privateColormap' will force XEmacs to create a
-private colormap for use.  The syntax for the visual string is
-"<visual><bitdepth>" where <visual> is one of 'StaticColor',
-'TrueColor', 'GrayScale', 'PseudoColor' or 'DirectColor' and
-<bitdepth> is the appropriate number of bits per pixel.  If an invalid
-or non-supported combination is entered, XEmacs attempts to find a happy
-medium.  The X creation mechanism will then determine if it needs to
-create a colormap for use, or the presence of the private flags will
-force it to create it.
 ** The `imenu' package has been ported to XEmacs and is available as a
 package.
 ** `echo-keystrokes' can now be a floating-point number, so that you
 when the function is called without arguments, it will return the
 value of the `user-full-name' variable.  The `user-full-name' variable
 is initialized using the environment variable NAME and (failing that)
 the user's system name.
-The behavior of the `user-full-name' function with an argument
+The behaviour of the `user-full-name' function with an argument
 specified is unchanged.
 ** The new command `M-x customize-changed-options' lets you customize
 all the options whose default values have changed in recent Emacs
 versions.  You specify a previous Emacs version number as argument,
 ** The package popper.el is now included in the edit-utils package.
 It has been greatly enhanced with respect to the one once included
 with the ilisp package and should work well under XEmacs 21.0.
-** Gnuserv changes
-*** Like the old 'gnudoit' program. Gnuclient -batch now can read from stdin.
-*** Gnuclient -batch no longer breaks off the output at the first LF.
 ** C mode changes
 *** Multiline macros are now handled, both as they affect indentation,
 and as recognized syntax.  New syntactic symbol cpp-macro-cont is
 assigned to second and subsequent lines of a multiline macro
 ** The `dir' files are no longer essential for functioning of the Info
 subsystem.  If the `dir' file does not exist in an Info directory, the
 relevant information will be generated on-the-fly.
-This behavior can be customized, look for `Info-auto-generate-directory'
+This behaviour can be customized, look for `Info-auto-generate-directory'
 and `Info-save-auto-generated-dir' in the `info' customization group.
-** Version Control is no longer automatically loaded.  Users must
-add:
-(require 'vc-hooks)
-to their .emacs file to get version control functionality.
-** The EDiff menus are no longer included in the default menubar.
-Users must add:
-(require 'ediff-hook)
-to their .emacs file to get the menus.
-** An experimental version of dynamic linking is supported.
-There is no documentation and we are making no guarantees about what
-might change in the future with the "C" level API.  Examples of how to
-make DLLs are in the modules subdirectory of the XEmacs source
-distribution.
-Please note that XEmacs is a GPL'ed program and there are restrictions
-on what kinds of binaries that can be linked with it.  In particular,
-proprietary DLLs without source cannot be distributed.  See the file
-COPYING for more details.
 * Lisp and internal changes in XEmacs 21.0
 ==========================================
-** There is a new configure option '--with-clash-detection' to
-enable/disable 'lockdir' based clash detection. (Actually, it has
-been there since 20.4, but was not documented then). The
-implementation based on a central locking directory can cause
-severe slowdowns on networked file systems. Therefore the default
-has been changed to build with clash detection disabled, pending
-reimplementation of the feature (most likely compatible with the
-new implementation in recent FSF verions and Interleaf) in an
-upcoming version.
 ** It is now possible to build XEmacs with support for 31-bit Lisp
 integers (normally, Lisp integers are only 28 bits wide on 32-bit
 machines.)  Configure with --use-minimal-tagbits to test.  With this
 change, the maximum buffer size on 32-bit machines is increased from
 ** The arithmetic comparison functions <, >, =, /= now accept a
 variable number of arguments.
 This means that if you want to test whether A < B < C, you can write
 it as (< A B C) instead of (and (< A B) (< B C)).  Likewise,
-(apply #'> LIST) now tests if LIST is monotonically increasing -- and
+(apply #'> LIST) now tests if LIST is monotonously increasing -- and
 so on.
 ** The XEmacs hashtables now have a consistent read/print syntax.
 This means that a hashtable will be readably printed in a
 structure-like form:
 ** It is now possible to build XEmacs with LDAP support.
 You will need to install a LDAP library first.  The following have
 been tested:
 - LDAP 3.3 from the University of Michigan
 (get it from <URL:http://www.umich.edu/~dirsvcs/ldap/>)
-- OpenLDAP 1.0.3 from the OpenLDAP Foundation
-(get it from <URL:http://www.openldap.org/>)
 - LDAP SDK 1.0 from Netscape Corp.
 (get it from <URL:http://developer.netscape.com/>)
 ** When profiling is in effect, a call-count of all recorded functions
 is now calculated.  This information is stored in
 ** The code XEmacs uses to assemble its various paths into the
 directory hierarchy has been rewritten to support the package system.
 Look under "Startup Paths" in the Info documentation for more
 information.
-*** site-lisp is no longer part of the load-path by default.
+*** site-lisp is now longer part of the load-path by default.
 Its use is deprecated, but you can specify --with-site-lisp=yes at the
 configure command line to get it back.
 *** `Info-default-directory-list' is now obsolete.  If you want to
 change the path which XEmacs uses to search for info files, set
 `Info-directory-list' instead.
-* Changes in XEmacs 20.4
-========================
-** XEmacs 20.4 is a bugfix release with no user-visible changes.
-* Changes in XEmacs 20.3
-========================
-** Quail input method is now available.
-Quail is a simple key-translation system that allows users to input
-any multilingual text from normal ASCII keyboard.  This means that
-XEmacs with Mule now supports a number of European languages.
-** More Windows NT support.
-Thanks to efforts of many people, coordinated by David Hobley
-<davidh@wr.com.au> and Marc Paquette <marcpa@cam.org>, beta versions
-of XEmacs now run on 32-bit Windows platforms (Windows NT and Windows
-95).  The current betas require having an X server to run XEmacs;
-however, a native NT/95 port is in alpha, thanks to Jonathan Harris
-<jhar@tardis.ed.ac.uk>.
-The NT development is now coordinated by a mailing list at
-<xemacs-nt@xemacs.org>.  Mail to <xemacs-nt-request@xemacs.org> to
-subscribe.
-** Multiple TTY frames are now available.
-On consoles that display only one frame at a time (e.g. TTY consoles),
-creating a new frame with `C-x 5 2' also raises and selects that
-frame.  The behavior of window system frames is unchanged.
-** Package starting changes.
-State of Emacs should never be changed with loading a package.  The
-following XEmacs packages that used to break this have been changed.
-*** Loading `paren' no longer enables paren-blinking.  Use
-`paren-set-mode' explicitly, or customize `paren-mode'.
-*** Loading `uniquify' no longer enables uniquify.  Set
-`uniquify-buffer-name-style' to a legal value.
-*** Loading `time' no longer enables display time.  Invoke
-`display-time' explicitly.
-*** Loading `jka-compr' no longer enables on-the-fly compression.  Use
-`toggle-auto-compression' instead.
-*** Loading `id-select' no longer enables its behavior.  Use
-`id-select-install' instead.
-** Zmacs region is not deactivated when an error is signaled.
-The behavior of the zmacs region can now be controlled in the event of
-a signaled error.  The new variable `errors-deactivate-region' may be
-set to nil to revert to the old behavior.  As before, typing C-g
-deactivates the region.
-** Multiple Info `dir' functionality has been merged with GNU Emacs
-19.34.
-XEmacs will now correctly merge all the `dir' files in
-`Info-directory-list' (initialized from either the `INFOPATH'
-env. variable or `Info-default-directory-list'.)  These files may be
-full-fledged info files containing subnodes or menus.  Previously
-supported `localdir' files are looked for also, secondary to `dir's.
-See the manual for details.
-** Abbreviations can now contain non-word characters.
-This means that it is finally possible to do such simple things as
-define `#in' to expand to `#include' in C mode, `s-c-b' to
-`save-current-buffer' in Lisp mode, `call/cc' to
-`call-with-current-continuation' in Scheme mode, etc.
-** `C-x n d' now runs the new command `narrow-to-defun',
-which narrows the accessible parts of the buffer to just
-the current defun.
-** The new command `C-x 4 0' (kill-buffer-and-window) kills the
-current buffer and deletes the selected window.  It asks for
-confirmation first.
-** `ESC ESC ESC' (keyboard-escape-quit) will now correctly abort
-recursive edits (as documented.)
-** arc-mode has a new function called `archive-quit' bound to q, which
-quits archive mode in the same fashion dired-quit works.
-** A `tetris' clone is now available within XEmacs, written by Glynn
-Clements.  Try it out with `M-x tetris'.
-** The feature to teach the key bindings of extended commands now
-prints the message after the command finishes.  After some time, the
-previous echo area contents are restored (in case the command prints
-something useful).
-** If you set scroll-conservatively to a small number, then when you
-move point a short distance off the screen, XEmacs will scroll the
-screen just far enough to bring point back on screen, provided that
-does not exceed `scroll-conservatively' lines.
-** Face background colors now take precedence over the default face
-background pixmap, which means that background pixmaps no longer clash
-with zmacs-regions, or clickable buttons.
-** Regexps can now contain additional Perl-like constructs.
-** Modifiers can be added to a keystroke by preceding it with a `C-x @
-<x>' sequence where <x> is one of letters `S', `c', `m', `a', `h', `s'
-corresponding to shift, control, meta, alt, hyper, and super modifiers,
-respectively.  It is possible to add several modifiers by repeating this
-sequence.  This feature is especially useful on text terminals where it
-allows one to enter keystrokes like, e.g., `M-home'.
-** An arbitrary keystroke can be generated by entering `C-x @ k
-<keysym-name> RET'.  For example a sequence:
-C-x @ c C-x @ k b a c k s p a c e RET
-will result in a `C-backspace' keystroke even on text terminals.
-** Customize changes.
-*** Customize has undergone a massive speedup, and should now operate
-acceptably fast.  Slowness of the interface used to be the biggest
-gripe.
-*** Many more packages have been modified to use the facility, so
-almost all of XEmacs options can now be examined through the Customize
-groups.
-*** There is a new `browser' mode of traversing customizations, in
-many ways easier to follow than the standard one.  Try it out with
-`M-x customize-browse'.
-** Pending-delete changes.
-*** Pending-delete is now a minor mode, with the normal minor-mode
-semantics and toggle functions.  Old functions are left for
-compatibility.
-*** Loading pending-del no longer turns on pending-delete mode.  In
-fact, it is no longer necessary to explicitly load pending-del.  All
-you need to do to turn on pending-delete is run the pending-delete
-function:
-Within XEmacs:   Type      M-x pending-delete <ret>
-not      M-x load-library <ret> pending-delete <ret>
-In .emacs:       Use       (turn-on-pending-delete)
-not       (load "pending-del")
-** XEmacs can now save the minibuffer histories from various
-minibuffers.  To use this feature, add the line:
-(savehist-load)
-to your .emacs.  This will load the minibuffer histories (if any) at
-startup, as well as instruct XEmacs to save them before exiting.  You
-can use Customize to add or remove the histories being saved.
-** The default format for ChangeLog entries (as created by `C-x 4 a')
-is now the international ISO 8601 format.
-To revert to the old behavior, use:
-(setq add-log-time-format 'current-time-string)
-Or `M-x customize RET add-log RET'.
-** In ChangeLog mode, you can now press `C-c C-c' to save the file
-and restore old window configuration, or `C-c C-k' to abandon the
-changes.
-** The key `C-x m' no longer runs the `mail' command directly.
-Instead, it runs the command `compose-mail', which invokes the mail
-composition mechanism you have selected with the variable
-`mail-user-agent'.  The default choice of user agent is
-`sendmail-user-agent', which gives behavior compatible with the old
-behavior.
-C-x 4 m now runs compose-mail-other-window, and C-x 5 m runs
-compose-mail-other-frame.
-** When you kill a buffer that visits a file, if there are any
-registers that save positions in the file, these register values no
-longer become completely useless.  If you try to go to such a register
-with `C-x j', then you are asked whether to visit the file again.  If
-you say yes, it visits the file and then goes to the same position.
-** When you visit a file that changes frequently outside Emacs--for
-example, a log of output from a process that continues to run--it may
-be useful for Emacs to revert the file without querying you whenever
-you visit the file afresh with `C-x C-f'.
-You can request this behavior for certain files by setting the
-variable revert-without-query to a list of regular expressions.  If a
-file's name matches any of these regular expressions, find-file and
-revert-buffer revert the buffer without asking for permission--but
-only if you have not edited the buffer text yourself.
-** Gnuserv changes
-*** The Lisp part of gnuserv has been rewritten to allow for more
-flexibility and features.
-*** Many new options and variables are now customizable.  Try
-`M-x customize RET gnuserv RET'.
-*** The functionality of `gnuattach' and `gnudoit' programs is
-provided by `gnuclient', which now accepts the standard `-nw',
-`-display', `-eval' and `-f' options.
-** Etags changes.
-*** In C, C++, Objective C and Java, Etags tags global variables by
-default.  The resulting tags files are inflated by 30% on average.
-Use --no-globals to turn this feature off.  Etags can also tag
-variables that are members of structure-like constructs, but it does
-not by default.  Use --members to turn this feature on.
-*** C++ member functions are now recognized as tags.
-*** Java is tagged like C++.  In addition, "extends" and "implements"
-constructs are tagged.  Files are recognised by the extension .java.
-*** Etags can now handle programs written in Postscript.  Files are
-recognised by the extensions .ps and .pdb (Postscript with C syntax).
-In Postscript, tags are lines that start with a slash.
-*** Etags now handles Objective C and Objective C++ code.  The usual C and
-C++ tags are recognized in these languages; in addition, etags
-recognizes special Objective C syntax for classes, class categories,
-methods and protocols.
-*** Etags also handles Cobol.  Files are recognised by the extension
-.cobol.  The tagged lines are those containing a word that begins in
-column 8 and ends in a full stop, i.e. anything that could be a
-paragraph name.
-*** Regexps in Etags now support intervals, as in ed or grep.  The syntax of
-an interval is \{M,N\}, and it means to match the preceding expression
-at least M times and as many as N times.
-** Ada mode changes.
-*** There is now better support for using find-file.el with Ada mode.
-If you switch between spec and body, the cursor stays in the same
-procedure (modulo overloading).  If a spec has no body file yet, but
-you try to switch to its body file, Ada mode now generates procedure
-stubs.
-*** There are two new commands:
-- `ada-make-local'   : invokes gnatmake on the current buffer
-- `ada-check-syntax' : check syntax of current buffer.
-The user options `ada-compiler-make', `ada-make-options',
-`ada-language-version', `ada-compiler-syntax-check', and
-`ada-compile-options' are used within these commands.
-*** Ada mode can now work with Outline minor mode.  The outline level
-is calculated from the indenting, not from syntactic constructs.
-Outlining does not work if your code is not correctly indented.
-*** The new function `ada-gnat-style' converts the buffer to the style of
-formatting used in GNAT.  It places two blanks after a comment start,
-places one blank between a word end and an opening '(', and puts one
-space between a comma and the beginning of a word.
-** New demand based locking implementation
-A faster, but experimental replacement for lazy-lock (called lazy-shot) is
-provided.  Like lazy-lock it provides demand based and idle time
-font-lock-ing.  However the lazy-lock versions that came with previous
-versions slowed down XEmacs (possibly quite a lot).  Lazy-shot solves
-this problem by relying on new support from the C code part of XEmacs.
-The support however is experimental and will cause some flashing as
-parts of the buffer are colored.  This likely to change in the future
-as the C support is completed.
-The current lazy-shot implementation is mostly interface compatible
-with lazy-lock v2.06 (the version shipped with XEmacs is v1.x).
-*** To enable:
-1. Despite the flashing, lazy-shot was deemed such an improvement by
-the majority of beta testers that it is now the standard method
-provided by the options menu. Alternatively add
-	(add-hook 'font-lock-mode-hook 'turn-on-lazy-shot)
-to '.emacs'.
-2. If you were using lazy-lock before, just replace all occurrences of
-"lazy-lock" by "lazy-shot" in your '.emacs' file.
-*** To disable:
-If prefer to use lazy-lock in stead of lazy-shot, put
-	(remove-hook 'font-lock-mode-hook 'turn-on-lazy-shot)
-	(add-hook 'font-lock-mode-hook 'turn-on-lazy-lock)
-at the END of `.emacs'.
-** RefTeX mode
-RefTeX mode is a new minor mode with special support for \label{}, \ref{}
-and \cite{} macros in LaTeX documents.  RefTeX distinguishes labels of
-different environments (equation, figure, ...) and has full support for
-multifile documents.  To use it, select a buffer with a LaTeX document and
-turn the mode on with M-x reftex-mode.  Here are the main user commands:
-C-c (    reftex-label
-Creates a label semi-automatically.  RefTeX is context sensitive and
-knows which kind of label is needed.
-C-c )    reftex-reference
-Offers in a menu all labels in the document, along with context of the
-label definition.  The selected label is referenced as \ref{LABEL}.
-C-c [    reftex-citation
-Prompts for a regular expression and displays a list of matching BibTeX
-database entries.  The selected entry is cited with a \cite{KEY} macro.
-C-c &    reftex-view-crossref
-Views the cross reference of a \ref{} or \cite{} command near point.
-C-c =    reftex-toc
-Shows a table of contents of the (multifile) document.  From there you
-can quickly jump to every section.
-Under X, RefTeX installs a "Ref" menu in the menu bar, with additional
-commands.  Full documentation and customization examples are in the file
-reftex.el.  You can use the finder to view this information:
-C-h p --> tex --> reftex.el
-* Lisp and internal changes in XEmacs 20.3
-==========================================
-** Autoconf 2 is supported, making XEmacs more conforming to
-conventions used by other free software.
-** `tty-erase-char' is a new variable that reports which character
-was set up as the terminal's erase character at the time Emacs was
-started.
-** It is now possible to attach the menubar accelerator keys to menu
-entries.  Look at the Lispref under Menus->Menu Accelerators for
-details.
-** `insert-file-contents' can now read from a special file,
-as long as the arguments VISIT and REPLACE are nil.
-** `string-to-number' now accepts an optional BASE argument that
-specifies which base to use.  The default base is 10.
-** The TIME argument to `format-time-string' is now optional and
-defaults to the current time.
-** The PATTERN argument to `split-string' is now optional and defaults
-to whitespace ("[ \f\t\n\r\v]+").
-** `set-extent-properties' is a new function that can be used to
-change properties of an extent at once, and is analogous to
-`set-frame-properties'.
-** If a format field width is specified as `*', the field width is
-now assumed to have been specified as an argument (as in C.)
-(format "%*s" 10 "abc")
-=> "       abc"
-** The new macro `with-current-buffer' lets you evaluate an expression
-conveniently with a different current buffer.  It looks like this:
-(with-current-buffer BUFFER BODY-FORMS...)
-BUFFER is the expression that says which buffer to use.
-BODY-FORMS say what to do in that buffer.
-The old `eval-in-buffer' macro is obsoleted by `with-current-buffer'.
-** The new primitive `save-current-buffer' saves and restores the
-choice of current buffer, like `save-excursion', but without saving or
-restoring the value of point or the mark.  `with-current-buffer'
-works using `save-current-buffer'.
-** The new macro `with-temp-file' lets you do some work in a new buffer and
-write the output to a specified file.  Like `progn', it returns the value
-of the last form.
-** The variable `debug-ignored-errors' now works in XEmacs.  It allows
-one to ignore the debugger for some common errors, even when
-`debug-on-error' is t.  It has no effect when `debug-on-signal' is
-non-nil.
-** The new function `current-message' returns the message currently
-displayed in the echo area, or nil if there is none.
-** File-access primitive functions no longer discard an extra redundant
-directory name from the beginning of the file name.  In other words,
-they no longer do anything special with // or /~.  The same goes for
-`expand-file-name'.  That conversion is now done only in
-`substitute-in-file-name'.
-This makes it possible for a Lisp program to open a file whose name
-begins with ~.
-** The regexp matcher has been extended to recognize the following
-constructs, borrowed from Perl:
-*** Additional quantifiers.
-In addition to `*', `+' and `?', XEmacs now recognizes the following
-quantifiers:
-\{n\}    Match exactly n times
-\{n,\}   Match at least n times
-\{n,m\}  Match at least n but not more than m times
-*** Non-greedy quantifiers.
-Any of the standard quantifiers (`*', `+' and others) can now be
-followed by an optional `?', which will make them become "non-greedy",
-i.e. they will match as little text as possible.  Note that the
-meanings don't change, just the "gravity."
-*** Shy groups.
-The \(?: ... \) groups things like \( ... \), but doesn't record the
-context for backreferences or future use.  This is useful when you
-need a lot of groups for the sake of priorities, but actually want to
-record only one or two.
-** The new function `regexp-opt' returns an efficient regexp to match
-a string.  The arguments are STRINGS and (optionally) PAREN.  This
-function can be used where regexp matching or searching is intensively
-used and speed is important, e.g., in Font Lock mode.
-** The featurep syntax has been extended to resemble the Common Lisp
-one, as suggested by Erik Naggum.
-*** The `xemacs' feature is defined in XEmacs by default.
-*** The expression `#+fexp form' is equivalent to
-(when (featurep fexp) form), only it is evaluated at read-time.  Also,
-`#-fexp form' is equivalent to (unless (featurep fexp) form).
-*** In addition to symbols, a FEXP can also be a number, or a logical
-operator.  Here are some examples:
-;; evaluates to non-nil on XEmacs:
-(featurep 'xemacs)
-;; evaluates to non-nil on XEmacs 20.3 or later:
-(featurep '(and xemacs 20.03))
-;; evaluates to non-nil either on Emacs, or on XEmacs built without
-;; X support:
-(featurep '(or emacs (and xemacs (not x))))
-* Changes in XEmacs 20.2
-========================
-** Why XEmacs 20.1 is called 20.2
-Testing of XEmacs 20.1 revealed a number of showstopping bugs at the
-very final moment.  Instead of confusing the version numbers further,
-the `20.1' designation was abandoned, and the release was renamed to
-`20.2'.
-** Delete/backspace keysyms have been separated
-The Delete and Backspace keysyms are now no longer identical.  A better
-version of delbackspace.el has been added called delbs.el.
-** XEmacs 20.0 MULE API supported for backwards compatibility
-XEmacs 20.2 primarily supports the MULE 3 API.  It now also supports
-the XEmacs 20.0 MULE API.
-** The logo has been changed, and the default background color is
-now a shade of gray instead of the eye-burning white.
-The sample .Xdefaults and .emacs files contain examples of how to
-revert to the old background color.
-** Default modeline colors are now less of a color-salad.
-** The `C-z' key now iconifies only the current X frame.  You can use
-`C-x C-z' to get the old behavior.
-On the tty frames `C-z' behaves as before.
-** The command `display-time' now draws a pretty image in the modeline
-when new mail arrives.  It also supports balloon-help messages.
-** Various commands that were previously disabled are now enabled, like
-eval-expression (`M-:') and upcase-region (`C-x C-u')/downcase-region
-(`C-x C-l').
-** It is now possible to customize the functions called by XEmacs toolbar.
-Type `M-x customize RET toolbar RET' to customize it.  Customizations
-include the choice of functions for the buttons to invoke, as well as
-a wide choice of mailers and newsreaders to invoked by the respective
-functions.
-** `temp-buffer-shrink-to-fit' now defaults to nil.
-There are unresolved issues regarding this feature, which is why the
-XEmacs developers decided to disable it by default.
-** `ps-print-color-p' now defaults to nil.
-This is because the new default background color is non-white.  The
-`Printing Options' in the `Options' menu now include an item that
-enables color printing, and sets the white background.
-** `line-number-mode' should be used to get line numbers in the
-modeline, and `column-number-mode' to get column numbers.  Line
-numbers now number from 1 by default.
-** font-lock-mode will now correctly fontify `int a, b, c;'
-expressions in C mode.
-** The blinking cursor is always "on" during movement.
-** The XEmacs build process has been changed to make site
-administration easier.  See lisp/site-load.el for details.
-** Numerous causes of crashes have been fixed.  XEmacs should now be
-even more stable than before.
-** configure no longer defaults to using --with-xim=motif if Motif libraries
-are linked.
-There are many bugs in the Xlib XIM support in X11R6.3.
-** A number of new packages are added, and many packages were
-updated.
-** Gnus-5.4.52, courtesy of Lars Magne Ingebrigtsen
-*** nntp.el has been totally rewritten in an asynchronous fashion.
-*** Article prefetching functionality has been moved up into
-Gnus.
-*** Scoring can now be performed with logical operators like
-`and', `or', `not', and parent redirection.
-*** Article washing status can be displayed in the
-article mode line.
-*** gnus.el has been split into many smaller files.
-*** Suppression of duplicate articles based on Message-ID.
-(setq gnus-suppress-duplicates t)
-*** New variables for specifying what score and adapt files
-are to be considered home score and adapt files.  See
-`gnus-home-score-file' and `gnus-home-adapt-files'.
-*** Groups can inherit group parameters from parent topics.
-*** Article editing has been revamped and is now usable.
-*** Signatures can be recognized in more intelligent fashions.
-See `gnus-signature-separator' and `gnus-signature-limit'.
-*** Summary pick mode has been made to look more nn-like.
-Line numbers are displayed and the `.' command can be
-used to pick articles.
-*** Commands for moving the .newsrc.eld from one server to
-another have been added.
-`M-x gnus-change-server'
-*** A way to specify that "uninteresting" fields be suppressed when
-generating lines in buffers.
-*** Several commands in the group buffer can be undone with
-`M-C-_'.
-*** Scoring can be done on words using the new score type `w'.
-*** Adaptive scoring can be done on a Subject word-by-word basis:
-(setq gnus-use-adaptive-scoring '(word))
-*** Scores can be decayed.
-(setq gnus-decay-scores t)
-*** Scoring can be performed using a regexp on the Date header.  The
-Date is normalized to compact ISO 8601 format first.
-*** A new command has been added to remove all data on articles from
-the native server.
-`M-x gnus-group-clear-data-on-native-groups'
-*** A new command for reading collections of documents
-(nndoc with nnvirtual on top) has been added -- `M-C-d'.
-*** Process mark sets can be pushed and popped.
-*** A new mail-to-news backend makes it possible to post
-even when the NNTP server doesn't allow posting.
-*** A new backend for reading searches from Web search engines
-(DejaNews, Alta Vista, InReference) has been added.
-Use the `G w' command in the group buffer to create such
-a group.
-*** Groups inside topics can now be sorted using the standard
-sorting functions, and each topic can be sorted independently.
-See the commands under the `T S' submap.
-*** Subsets of the groups can be sorted independently.
-See the commands under the `G P' submap.
-*** Cached articles can be pulled into the groups.
-Use the `Y c' command.
-*** Score files are now applied in a more reliable order.
-*** Reports on where mail messages end up can be generated.
-`M-x nnmail-split-history'
-*** More hooks and functions have been added to remove junk
-from incoming mail before saving the mail.
-See `nnmail-prepare-incoming-header-hook'.
-*** The nnml mail backend now understands compressed article files.
-** Custom 1.86, courtesy of Per Abrahamsen
-The Customize library enables Emacs Lisp programmers to specify types
-of their variables, so that the users can customize them.
-Invoke the customizations buffer using the menus (Customize is at the
-top of the Options menu), or using commands `M-x customize',
-`M-x customize-variable' and `M-x customize-face'.  Customize can save
-the changed settings to your `.emacs' file.
-Customize is now the preferred way to change XEmacs settings.  Tens of
-packages have been converted to take advantage of the Customize
-features, including Gnus, Message, Supercite, Psgml, Comint, W3,
-cc-mode (and many other programming language modes), ispell.el,
-ps-print.el, id-select.el, most of the programming language modes, and
-many many more.
-See the "Lisp Changes" section later for a short description of why
-and how to add custom support to your Lisp packages.  Custom is also
-documented in the XEmacs info manuals.
-** W3-3.0.86, courtesy of William Perry
-Version 3 of Emacs/W3, the Emacs World Wide Web browser, has been
-included.  It is significantly faster than any of the previous
-versions, and contains numerous new features.
-** AUCTeX-9.7k, courtesy of Per Abrahamsen
-AUC TeX is a comprehensive customizable integrated environment for
-writing input files for LaTeX using Emacs.
-AUC TeX lets you run TeX/LaTeX and other LaTeX-related tools, such as
-a output filters or post processor from inside Emacs.  Especially
-`running LaTeX' is interesting, as AUC TeX lets you browse through the
-errors TeX reported, while it moves the cursor directly to the
-reported error, and displays some documentation for that particular
-error.  This will even work when the document is spread over several
-files.
-AUC TeX automatically indents your `LaTeX-source', not only as you
-write it -- you can also let it indent and format an entire document.
-It has a special outline feature, which can greatly help you `getting
-an overview' of a document.
-Apart from these special features, AUC TeX provides an large range of
-handy Emacs macros, which in several different ways can help you write
-your LaTeX documents fast and painless.
-** redo.el-1.01, courtesy of Kyle Jones
-redo.el is a package that implements true redo mechanism in XEmacs
-buffers.  Once you load it from your `.emacs', you can bind the `redo'
-command to a convenient key to use it.
-Emacs' normal undo system allows you to undo an arbitrary number of
-buffer changes.  These undos are recorded as ordinary buffer changes
-themselves.  So when you break the chain of undos by issuing some
-other command, you can then undo all the undos.  The chain of recorded
-buffer modifications therefore grows without bound, truncated only at
-garbage collection time.
-The redo/undo system is different in two ways:
-*** The undo/redo command chain is only broken by a buffer modification.
-You can move around the buffer or switch buffers and still come back
-and do more undos or redos.
-*** The `redo' command rescinds the most recent undo without
-recording the change as a _new_ buffer change.
-It completely reverses the effect of the undo, which includes making
-the chain of buffer modification records shorter by one, to counteract
-the effect of the undo command making the record list longer by one.
-** edmacro.el-3.10, courtesy of Dave Gillespie, ported to XEmacs by
-Hrvoje Niksic.
-Edmacro is a utility that provides easy editing of keyboard macros.
-Originally written by Dave Gillespie, it has been mostly rewritten by
-Hrvoje Niksic, in order to make it distinguish characters and integer,
-as well as to adapt it to XEmacs keysyms.
-Press `C-x C-k' to invoke the `edit-kbd-macro' command that lets you
-edit old as well as define new keyboard macros.  You can also edit the
-last 100 keystrokes and insert them into a macro to be bound to a key
-or named as a command.  The recorded/edited macros can be dumped to
-`.emacs' file.
-** xmine.el-1.8, courtesy of Jens Lautenbacher
-XEmacs now includes a minesweeper game with a full-featured graphics
-and mouse interface.  Invoke with `M-x xmine'.
-** efs-1.15-x5 courtesy of Andy Norman and Michael Sperber
-EFS is now integrated with XEmacs, and replaces the old ange-ftp.  It
-has many more features, including info documentation, support for many
-different FTP servers, and integration with dired.
-** mic-paren.el-1.3.1, courtesy of Mikael Sj�din
-** hyperbole-4.022, courtesy of Bob Weiner
-** hm--html-menus-5.3, courtesy of Heiko Muenkel
-** python-mode.el-2.90, courtesy of Barry Warsaw
-** balloon-help-1.06, courtesy of Kyle Jones
-** xrdb-mode.el-1.21, courtesy of Barry Warsaw
-** igrep.el-2.56, courtesy of Kevin Rodgers
-** frame-icon.el, courtesy of Michael Lamoureux and Bob Weiner
-** itimer.el-1.05, courtesy of Kyle Jones
-** VM-6.30, courtesy of Kyle Jones
-** OO-Browser-2.10, courtesy of Bob Weiner
-** viper-2.93, courtesy of Michael Kifer
-** ediff-2.65, courtesy of Michael Kifer
-** detached-minibuf-1.1, courtesy of Alvin Shelton
-** whitespace-mode.el, courtesy of Heiko Muenkel
-** winmgr-mode.el, courtesy of David Konerding, Stefan Strobel & Barry Warsaw
-** fast-lock.el-3.11.01, courtesy of Simon Marshall
-** lazy-lock.el-1.16, courtesy of Simon Marshall
-** browse-cltl2.el-1.1, courtesy of Holger Schauer
-** eldoc.el-1.10, courtesy of Noah Friedman
-** tm-7.105, courtesy of MORIOKA Tomohiko
-** verilog-mode.el-2.25, courtesy of Michael McNamara & Adrian Aichner
-** overlay.el, courtesy of Joseph Nuspl
-** live-icon.el-1.3, fixes courtesy of Karl Hegbloom
-** tpu-edt.el, fixes courtesy of R. Kevin Oberman
-** etags.c-11.86 Courtesy of F. Potort�
-* Lisp and internal changes in XEmacs 20.2
-==========================================
-** `defcustom' and `defgroup' can now be used to specify types and
-placement of the user-settable variables.
-You can now specify the types of user-settable variables in your Lisp
-packages to be customized by users.  To do so, use `defcustom' as a
-replacement for `defvar'.
-For example, the old declaration:
-(defvar foo-blurgoze nil
-"*non-nil means that foo will act very blurgozely.")
-can be rewritten as:
-(defcustom foo-blurgoze nil
-"*non-nil means that foo will act very blurgozely."
-:type 'boolean
-:group 'foo)
-From a package writer's point of view, nothing has been changed
-However, the user can now type `M-x customize RET foo-blurgoze RET' to
-customize the variable.
-Other, more complex data structures can be described with `defcustom'
-too, for instance:
-(defcustom foo-hairy-alist '((somekey . "somestring")
-(otherkey . (foo-doit))
-(thirdkey . [1 2 3]))
-"*Alist describing the hairy options of the foo package.
-The CAR of each element is a symbol, whereas the CDR can be either a
-string, a form to evaluate, or a vector of integers.
-New Emacs users simply adore alists like this one."
-:type '(repeat (cons (symbol :tag "Key")
-(choice string
-(vector (repeat :inline t integer))
-sexp)))
-:group 'foo)
-The user will be able to add and remove the entries to the list in a
-visually appealing way, as well as save the settings to his/her
-`.emacs'.
-Note that `defcustom' will also be included in GNU Emacs 19.35, and
-that both XEmacs and GNU Emacs will be using it in the future.
-Although the user-interface of customize may change, the Lisp
-interface will remain the same.  This is why we recommend that you use
-`defcustom' for user-settable variables in your new Lisp packages.
-** The `read-kbd-macro' function is now available.
-The `read-kbd-macro' function (as well as the read-time evaluated
-`kbd' macro) from the edmacro package is now available in XEmacs.  For
-example:
-(define-key foo-mode-map (kbd "C-c <up>") 'foo-up)
-is completely equivalent to
-(define-key foo-mode-map [(control ?c) up] 'foo-up)
-The `kbd' macro is preferred over `read-kbd-macro' function , as it
-evaluates before compiling, thus having no loading overhead.
-Using `kbd' is not necessary for GNU Emacs compatibility (GNU Emacs
-supports the XEmacs-style keysyms), but adds to clarity.  For example,
-(kbd "C-?") is usually easier to read than [(control ??)].  The full
-description of the syntax of keybindings accepted by `read-kbd-macro'
-is documented in the docstring of `edmacro-mode'.
-** Overlay compatibility is implemented.
-The overlay support in XEmacs is now functional.  Written by Joe
-Nuspl, the overlay compatibility library overlay.el is implemented on
-top of the native XEmacs extents, and can be used as a GNU
-Emacs-compatible way of changing display properties.
-** You should use keysyms kp-* (kp-1, kp-2, ..., kp-enter etc.)
-rather than the old form kp_*.  The new form is also compatible with
-GNU Emacs.
-** The keysyms mouse-1, mouse-2, mouse-3 and down-mouse-1,
-down-mouse-2, and down-mouse-3 have been added for GNU Emacs
-compatibility.
-** A new user variable `signal-error-on-buffer-boundary' has been
-added.
-Set this to variable to nil to avoid XEmacs usual lossage of zmacs
-region when moving up against a buffer boundary.
-** lib-complete.el was MULE-ized.
-The commands `find-library', `find-library-other-window' and
-`find-library-other-frame' now take an optional coding system
-argument.
-** Experimental support for Lisp reader macros #-, #+.
-The Common Lisp reader macros for feature test are now supported.  This
-feature is present for evaluation purposes and is subject to change.
-** `values' now has a setf method
-** The `eval-after-load' and `eval-next-after-load' functions are
-now available.
-** A bug that prevented `current-display-table' to be correctly set
-with `set-specifier' has been fixed.
-** The bug in easymenu which prevented multiple menus from being
-accessible through button3 has been fixed.
-You can now safely use easymenu to define multiple menu entries in a
-compatible way, with the added menus accessible via button3 as local
-submenus.
-** Many bugs in the scrollbar code have been fixed.
-** First alpha level support of MS Windows NT is available, courtesy
-of David Hobley and Marc Paquette.
-** Wnn/egg now has initial support Courtesy of Jareth Hein.
-** Some old non-working code has been removed until someone chooses
-to work on it.
-This includes much of the NeXTStep stuff.  The VMS support is also
-likely to be removed in the future.
-** Many files have been purged out of the etc/ directory.
-If you still need the purged files, look for them in the GNU Emacs
-distribution.
-* Major Differences Between 19.14 and 20.0
-===========================================
-XEmacs 20.0 is the first public release to have support for MULE
-(Multi-Lingual Emacs).  The --with-mule configuration flag must be
-used to enable Mule support.
-Many bugs have been fixed.  An effort has been made to eradicate all
-XEmacs crashes, although we are not quite done yet.  The overall
-quality of XEmacs should be higher than any previous release.  XEmacs
-now compiles with nary a warning with some compilers.
--- Multiple character sets can be displayed in a buffer.  The file
-mule-doc/demo in the distribution contains a greeting in many
-different languages.
--- Although the Mule work is for all languages, particular effort has
-been invested in Japanese, with particular focus on Japanese users
-of Sun WorkShop.  Many menubar labels have been translated into
-Japanese.  Martin Buchholz, the maintainer of MULE features within
-XEmacs normally runs XEmacs in a Japanese language environment.
-Some of the other contributors are Japanese, most importantly
-Morioka Tomohiko, author of the TM package, providing MIME support
-for Mail and News.
--- Input for complex Asian languages is supported via XIM, a mechanism
-introduced in X11R5 to allow applications to get localized input
-without knowledge of the language.  The way XIM works is that when
-the locale has a complex character set, such as Japanese, and extra
-minibuffer-like status window appears attached to various
-application windows, and indicates the status of the input method.
-Composed input in XEmacs should work the same as with other
-applications.  If Motif and Mule support is configured into XEmacs,
-then XIM support is automatically configured in as well.
--- TM (Tools for Mime) now comes with XEmacs.  This provides MIME
-(Multipurpose Internet Mail Extensions) support for Mail and News.
-The primary author is Morioka Tomohiko.
--- Japanese input can also be input using the `canna' input method.
-This support was contributed by Morioka Tomohiko.  Setting up canna
-usually requires more user effort (and better knowledge of Japanese!)
-than XIM, but provides a better-integrated input method.
--- A mini-tutorial on using Mule:
--- Every time data passes between XEmacs and the rest of the
-environment, via file or process input or output, XEmacs must
-convert between its internal multi-character representation and
-the external representation (`coding system').  Many
-difficulties with Mule are related to controlling these coding
-system conversions.
--- file-coding-system, file-coding-system-for-read,
-overriding-file-coding-system, and file-coding-system-alist
-are used to determine the coding systems used on file input
-and output.
--- For each process, (set-process-input-coding-system) and
-(set-process-output-coding-system) determine the coding
-system used for I/O from the process.
--- Many other things are encoded using pathname-coding-system:
--- file and directory names
--- window manager properties: window title, icon name
--- process names and process arguments
--- XIM input.
--- In many cases, you will want to have the same values for all
-the above variables in many cases.  For example, in a
-Japanese environment, you will want to use the 'euc-japan
-coding system consistently, except when running certain
-processes that do byte-oriented, rather than
-character-oriented I/O, such as gzip, or when processing Mail
-or News, where ISO2022-based coding systems are the norm,
-since they support multiple character sets.
--- To add support for a new language or character set, start by
-trying to copy code in japanese-hooks.el.
--- The traditional pre-Mule data conversion is equivalent to the
-'binary coding system under Mule.  In this case all characters
-are treated as iso8859-1 (i.e. characters for English + Western
-European languages).
--- many fileio-related commands such as find-file and write-file
-take an extra argument, coding-system, which specifies the
-encoding to be used with the file on disk.  For example, here is
-a command that converts from the Japanese EUC to ISO2022 format:
-xemacs -batch -eval '(progn (find-file
-"locale-start.el.euc" (quote euc-japan)) (write-file
-"locale-start.el" nil (quote iso-2022-8-unix)))'
-Interactively, you can be prompted for a coding system by
-providing a prefix argument to the fileio command.  In
-particular, C-u C-x C-f is a useful sequence to edit a file
-using a particular coding system.
--- In an Asian locale (i.e. if $LANG is set to ja, ko, or zh),
-XEmacs automatically sets up a language environment assuming
-that the operating system encodes information in the national
-version of EUC, which supports English and the national
-language, but typically no other character sets.
--- Command line processing should work much better now - no more order
-dependencies.
--- Many many package upgraded (thanks go to countless maintainers):
--- ediff 2.64 (Michael Kifer)
--- Gnus 5.2.40 (Lars Magne Ingebrigtsen)
--- w3 3.0.51  (Bill Perry)
--- ilisp 5.8 (Chris McConnell, Ivan Vasquez, Marco Antoniotti, Rick
-Campbell)
--- VM 5.97     (Kyle Jones)
--- etags 11.78 (Francesco Potorti`)
--- ksh-mode.el 2.9
--- vhdl-mode.el 2.73 (Rod Whitby)
--- id-select.el (Bob Weiner)
--- EDT/TPU emulation modes should work now for the first time.
--- viper 2.92 (Michael Kifer) is now the `official' vi emulator for XEmacs.
--- big-menubar should work much better now.
--- mode-motion+.el 3.16
--- backup-dir 2.0 (Greg Klanderman)
--- ps-print.el-3.05 (Jacques Duthen Prestataire)
--- lazy-lock-1.15 (Simon Marshall)
--- reporter 3.3 (Barry Warsaw)
--- hm--html-menus 5.0 (Heiko Muenkel)
--- cc-mode 4.322 (Barry Warsaw)
--- elp 2.37 (Barry Warsaw)
--- Many new packages have been added:
--- m4-mode 1.8 (Andrew Csillag)
--- crisp.el - crisp/brief emulation (Gary D. Foster)
--- Johan Vroman's iso-acc.el has been ported to XEmacs by Alexandre Oliva
--- psgml-1.01 (Lennart Staflin, James Clark)
--- python-mode.el 2.83 (Barry Warsaw)
--- vrml-mode.el (Ben Wing)
--- enriched.el, face-menu.el (Boris Goldowsky, Michael Sperber)
--- sh-script.el (Daniel Pfeiffer)
--- decipher.el (Christopher J. Madsen)
--- New function x-keysym-on-keyboard-p helps determine keyboard
-characteristics for key rebinding:
-x-keysym-on-keyboard-p: (KEYSYM &optional DEVICE)
--- a built-in function.
-Return true if KEYSYM names a key on the keyboard of DEVICE.
-More precisely, return true if pressing a physical key
-on the keyboard of DEVICE without any modifier keys generates KEYSYM.
-Valid keysyms are listed in the files /usr/include/X11/keysymdef.h and in
-/usr/lib/X11/XKeysymDB, or whatever the equivalents are on your system.
--- Installed info files are now compressed (support courtesy of Joseph J Nuspl)
--- (load-average) works on Solaris, even if you're not root. Thanks to
-Hrvoje Niksic.
--- OffiX drag-and-drop support added
--- lots of syncing with 19.34 elisp files, most by Steven Baur
-** Major Differences Between 19.13 and 19.14
-============================================
-XEmacs has a new address!  The canonical ftp site is now
-ftp.xemacs.org:/pub/xemacs and the Web page is now at
-http://www.xemacs.org/.  All mailing lists now have @xemacs.org
-addresses.  For the time being the @cs.uiuc.edu addresses will
-continue to function.
-This is a major new release.  Many features have been added, as well
-as many bugs fixed.  The Motif menubar has still _NOT_ been fixed for
-19.14.  You should use the Lucid menubar instead.
-Major user-visible changes:
----------------------------
--- Color support in TTY mode is provided.  You have to have a TTY capable
-of displaying them, such as color xterm or the console under Linux.
-If your terminal type supports colors (e.g. `xterm-color'), XEmacs
-will automatically notice this and start using color.
--- blink-cursor-mode enables a blinking text cursor.  There is a
-menubar option for this also.
--- auto-show-mode is turned on by default; this means that XEmacs
-will automatically scroll a window horizontally as necessary to
-keep point in view.
--- a file dialog box is provided and will be used whenever you
-are prompted for a filename as a result of a menubar selection.
--- XEmacs can be compiled with built-in GIF, JPEG, and PNG support.
-The GIF libraries are supplied with XEmacs; for JPEG and PNG,
-you have to obtain the appropriate libraries (this is well-
-documented).  This makes image display much easier and faster under
-W3 (the web browser) and TM (adds MIME support to VM and GNUS;
-not yet included with XEmacs but will be in 19.15).
--- XEmacs provides a really nice mode (PSGML with "Wing improvements")
-for editing HTML and other SGML documents.  It parses the document,
-and as a result it does proper indentation, can show you the context
-you're in, the allowed tags at a particular position, etc.
--- XEmacs comes standard with modes for editing Java and VRML code,
-including font-lock support.
--- GNUS 5.2 comes standard with XEmacs.
--- You can now embed colors in the modeline, with different sections
-of the modeline responding appropriately to various mouse gestures:
-For example, clicking on the "read-only" indicator toggles the
-read-only status of a buffer, and clicking on the buffer name
-cycles to the next buffer.  Pressing button3 on these areas brings
-up a popup menu of appropriate commands.
--- There is a much nicer mode for completion lists and such.
-At the minibuffer prompt, if you hit page-up or Meta-V, the completion
-buffer will be displayed (if it wasn't already), you're moved into
-it, and can move around and select filenames using the arrow keys
-and the return key.  Rather than a cursor, a filename is highlighted,
-and the arrow keys change which filename is highlighted.
--- The edit-faces subsystem has also been much improved, in somewhat
-similar ways to the completion list improvements.
--- Many improvements were made to the multi-device support.
-We now provide an auxiliary utility called "gnuattach" that
-lets you connect to an existing XEmacs process and display
-a TTY frame on the current TTY connection, and commands
-`make-frame-on-display' (with a corresponding menubar entry)
-and `make-frame-on-tty' for more easily creating frames on
-new TTY or X connections.
--- We have incorporated nearly all of the functionality of GNU Emacs
-19.30 into XEmacs.  This includes support for lazy-loaded
-byte code and documentation strings, improved paragraph filling,
-better support for margins within documents, v19 regular expression
-routines (including caching of compiled regexps), etc.
--- In accordance with GNU Emacs 19.30, the following key binding
-changes have been made:
-C-x ESC -> C-x ESC ESC
-ESC ESC -> ESC :
-ESC ESC ESC is "abort anything" (keyboard-escape-quit).
--- All major packages have been updated to their latest-released
-versions.
--- XEmacs now gracefully handles a full colormap (such as typically
-results when running Netscape).  The nearest available color
-is automatically substituted.
--- Many bug fixes to the subprocess/PTY code, ps-print, menubar
-functions, `set-text-properties', DEC Alpha support, toolbar
-resizing (the "phantom VM toolbar" bug), and lots and lots
-of other things were made.
--- The ncurses library (a replacement for curses, found especially
-under Linux) is supported, and will be automatically used
-if it can be found.
--- You can now undo in the minibuffer.
--- Surrogate minibuffers now work.  These are also sometimes referred
-to as "global" minibuffers.
--- font-lock has been merged with GNU Emacs 19.30, improved defaults
-have been added, and changes have been made to the way it is
-configured.
--- Many, many modes have menubar entries for them.
--- `recover-session' lets you recover whatever files can be recovered
-after your XEmacs process has died unexpectedly.
--- C-h k followed by a toolbar button press correctly reports
-the binding of the toolbar button.
--- `function-key-map', `key-translation-map', and `keyboard-translate-table'
-are now correctly implemented.
--- `show-message-log' (and its menubar entry under Edit) have been
-removed; instead use `view-lossage' (and its menubar entry under
-Help).
--- There is a standard menubar entry for specifying which browser
-(Netscape, W3, Mosaic, etc.) to use when dispatching URL's
-in mail, Usenet news, etc.
--- Improved native sound support under Linux.
--- Lots of other things we forgot to mention.
-Significant Lisp-level changes:
--------------------------------
--- Many improvements to the E-Lisp documentation have been made;
-it should now be up-to-date and complete in nearly all cases.
--- XEmacs has extensive documentation on its internals, for
-would-be C hackers.
--- Common-Lisp support (the CL package) is now dumped standard
-into XEmacs.  No more need for (require 'cl) or anything
-like that.
--- Full support for extents and text properties over strings is
-provided.
--- The extent properties `start-open', `end-open', `start-closed',
-and `end-closed' now work correctly w.r.t. text properties.
--- The `face' property of extents and text properties can now
-be a list.
--- The `mouse-face' property from GNU Emacs is now supported.
-It supersedes the `highlight' property.
--- `enriched' and `facemenu' packages from GNU Emacs have been ported.
--- New functions for easier creation of dialog boxes:
-`get-dialog-box-response', `message-box', and `message-or-box'.
--- `function-min-args' and `function-max-args' allow you to determine
-the minimum and maximum allowed arguments for any type of
-function (i.e. subr, lambda expression, byte-compiled function, etc.).
--- Some C-level support for doing E-Lisp profiling is provided.
-See `start-profiling', `stop-profiling', and
-`pretty-print-profiling-info'.
--- `current-process-time' reports the user, system, and real times
-for the currently running XEmacs process.
--- `next-window', `previous-window', `next-frame', `previous-frame',
-`other-window', `get-lru-window', etc. have an extra device
-argument that allows you to restrict which devices it includes
-(normally all devices).  Some functions that incorrectly ignored
-frames on different devices (e.g. C-x 0) are fixed.
--- new functions `run-hook-with-args-until-success',
-`run-hook-with-args-until-failure'.
--- generalized facility for local vs. global hooks.  See `make-local-hook',
-`add-hook'.
--- New functions for querying the window tree: `frame-leftmost-window',
-`frame-rightmost-window', `window-first-hchild', `window-first-vchild',
-`window-next-child', `window-previous-child', and `window-parent'.
--- Epoch support works.  This gets you direct access to some X events
-and objects (e.g. properties and property-notify events).
--- The multi-device support has been majorly revamped.  There is now
-a new concept of "consoles" (devices grouped together under a
-common keyboard/mouse), console-local variables, and a generalized
-concept of device/console connection.
--- `display-buffer' synched with GNU Emacs 19.30, giving you lots of
-wondrous cruft such as
--- unsplittable frames
--- pop-up-frames, pop-up-frame-function
--- special-display-buffer-names, special-display-regexps,
-special-display-function
--- same-window-buffer-names, same-window-regexps
--- XEmacs has support for accessing DBM- and/or DB-format databases,
-provided that you have the appropriate libraries on your system.
--- There is a new font style: "strikethru" fonts.
--- New data type "weak list", which is a list with special
-garbage-collection properties, similar to weak hash tables.
--- `set-face-parent' makes one face inherit all properties from another.
--- The junky frame parameters mechanism has been revamped as
-frame properties, which a standard property-list interface.
--- Lots and lots of functions for working with property lists have
-been added.
--- New functions `push-window-configuration', `pop-window-configuration',
-`unpop-window-configuration' for maintain a stack of window
-configurations.
--- Many fixups to the glyph code; icons and mouse pointers are now
-properly merged into the glyph mechanism.
--- `set-specifier' works more sensibly, like `set-face-property'.
--- Many new specifiers for individually controlling toolbar height/width
-and visibility and text cursor visibility.
--- New face `text-cursor' controls the colors of the text cursor.
--- Many new variables for turning on debug information about the
-inner workings of XEmacs.
--- Hash tables can now compare their keys using `equal' or `eql'
-as well as `eq'.
--- Other things too numerous to mention.
-Significant configuration/build changes:
-----------------------------------------
--- You can disable TTY support, toolbar support, scrollbar support,
-menubar support, and/or dialog box support at configure time
-to save memory.
--- New configure option `--extra-verbose' shows the diagnostic
-output from feature testing; this should help track down
-problems with incorrect feature detection.
--- `dont-have-xmu' is now `with-xmu', with the reversed sense.
-(It defaults to `yes'.)
--- `with-mocklisp' lets you add Mocklisp support if you really
-need this.
--- `with-term' for adding TERM support for Linux users.
-** Major Differences Between 19.12 and 19.13
-============================================
-This is primarily a bug-fix release.  Lots of bugs have been fixed.
-Hopefully only a few have been introduced.  The most noteworthy bug
-fixes are:
--- There should be no more problems connecting XEmacs to an X
-server over SLIP or other slow connections.
--- Periodic crashes when using the Buffers menu should be gone.
--- etags would sometimes erase the current buffer; it doesn't
-any more.
--- XEmacs will correctly exit if the X server dies.
--- uniconified frames are displayed properly under TVTWM.
--- Breakage in `add-menu-item' / `add-menu-button' is fixed.
-The Motif menubar has _NOT_ been fixed for 19.13.  You should use the
-Lucid menubar instead.
-Multi-device support should now be working properly.  You can now open
-an X device after having started out on a TTY device.
-Background pixmaps now work.  See `set-face-background-pixmap'.
-Echo area messages are now saved to a buffer, " *Message Log*".  To
-see this buffer, use the command `show-message-log'.  It is possible
-to filter the message which are actually included by modifying the
-variables `log-message-ignore-regexps' and `log-message-ignore-labels'.
-You can now control which warnings you want to see.  See
-`display-warning-suppressed-classes' and friends.
-You can now set the default location of an "other window" from the
-Options menu.
-"Save Options" now saves the state of all faces.
-You can choose which file "Save Options" writes into; see
-`save-options-file'.
-XPM support is no longer required for the toolbar.
-The relocating allocator is now enabled by default whenever possible.
-This allows buffer memory to be returned to the system when no longer
-in use which helps keep XEmacs process size down.
-The ability to have captioned toolbars has been added.  Currently only
-the default toolbar actually has a captioned version provided.  A new
-specifier variable, `toolbar-buttons-captioned-p' controls whether the
-toolbar is captioned.
-A copy of the XEmacs FAQ is now included and is available through info.
-The on-line E-Lisp reference manual has been significantly updated.
-There is now audio support under Linux.
-Modifier keys can now be sticky.  This is controlled by the variable
-`modifier-keys-are-sticky'.
-manual-entry should now work correctly under Irix with the penalty of
-a longer startup time the first time it is invoked.  If you are having
-problems with this on another system try setting
-`Manual-use-subdirectory-list' to t.
-make-tty-device no longer automatically creates the first frame.
-Rectangular regions now work correctly.
-ediff no longer sets synchronize-minibuffers to t unless you first set
-ediff-synchronize-minibuffers
-keyboard-translate-table has been implemented.  This means that the
-`enable-flow-control' command for dealing with TTY connections that
-filter out ^S and ^Q now works.
-You can now create frames that are initially unmapped and frames that
-are "transient for another frame", meaning that they behave more like
-dialog-box frames.
-Other E-Lisp changes:
--- Specifier `menubar-visible-p' for controlling menubar visibility
--- Local command hooks should be set using `local-pre-command-hook'
-and `local-post-command-hook' instead of making the global
-equivalents be buffer-local.
--- `quit-char', `help-char', `meta-prefix-char' can be any key specifier
-instead of just an integer.
--- new functions `add-async-timeout' and `disable-async-timeout'.
-These let you create asynchronous timeouts, which are like
-normal timeouts except that they're executed even during
-running Lisp code.  Use this with care!
--- `debug-on-error' and `stack-trace-on-error' now enter the debugger
-only when an *unhandled* error occurs.  If you want the old
-behavior, use `debug-on-signal' and `stack-trace-on-signal'.
--- \U, \L, \u, \l, \E recognized specially in `replace-match'.
-These are standard ex/perl commands for changing the case of
-replaced text.
--- New function event-matches-key-specifier-p.  This provides
-a clean way of comparing keypress events with key specifiers
-such as 65, (shift home), etc. without having to resort
-to ugly `character-to-event' / `event-to-character' hacks.
--- New function `add-to-list'
--- New Common-Lisp functions `some', `every', `notevery', `notany',
-`adjoin', `union', `intersection', `set-difference',
-`set-exclusive-or', `subsetp'
--- `remove-face-property' provides a clean way of removing a
-face property.
-Many of the Emacs Lisp packages have been updated.  Some of the new
-Emacs Lisp packages ---
-ada-mode:  major mode for editing Ada source
-arc-mode:  simple editing of archives
-auto-show-mode:  automatically scrolls horizontally to keep point on-screen
-completion:  dynamic word completion mode
-dabbrev:  the dynamic abbrev package has been rewritten and is much
-more powerful -- e.g. it searches in other buffers as well
-as the current one
-easymenu:  menu support package
-live-icon:  makes frame icons represent the current frame contents
-mailcrypt 3.2:  mail encryption with PGP; included but v2.4 is still
-		the default
-two-column:  for editing two-column text
-** Major Differences Between 19.11 and 19.12
-============================================
-This is a huge new release.  Almost every aspect of XEmacs has been changed
-at least somewhat.  The highlights are:
--- TTY support (includes face support)
--- new redisplay engine; should be faster, less buggy, and more powerful
--- terminology change from "screen" to "frame"
--- built-in toolbar
--- toolbar support added to many packages
--- multiple device support (still in beta; improvements to come in
-19.13)
--- Purify used to ensure that there are no memory leaks or memory corruption
-problems
--- horizontal and vertical scrollbars in all windows
--- new Lucid (i.e. look-alike Motif) scrollbar widget
--- stay-up menus in the Lucid (look-alike Motif) menubar widget
--- 3-d modeline
--- new extents engine; should be faster, less buggy, and more powerful
--- much more powerful control over faces
--- expanded menubar
--- more work on synching with GNU Emacs 19.28
--- new packages: Hyperbole, OOBR (object browser), hm--html-menus, viper,
-lazy-lock.el, ksh-mode.el, rsz-minibuf.el
--- package updates for all major packages
--- dynodump package for Solaris: provides proper undumping and portable
-binaries across different OS versions and machine types
--- Greatly expanded concept of "glyphs" (pixmaps etc. in a buffer)
--- built-in support for displaying X-Faces, if the X-Face library is
-available
--- built-in support for SOCKS if the SOCKS library is available
--- graceful behavior when the colormap is full (e.g. Netscape ate
-all the colors)
--- built-in MD5 (secure hashing function) support
-More specific information:
-*** TTY Support
----------------
-The long-awaited TTY support is now available.  XEmacs will start up
-in TTY mode (using the tty you started XEmacs from) if the DISPLAY
-environment variable is not set or if you use the `-nw' option.
-Faces are available on TTY's.  For a demonstration, try editing a C
-file and turning on font-lock-mode.
-You can also connect to additional TTY's using `make-tty-device',
-whether your first frame was a TTY or an X window.  This ability is
-not yet completely finished.
-The full event-loop capabilities (processes, timeouts, etc.) are
-available on TTY's.
-*** New Redisplay Engine
-------------------------
-The redisplay engine has been rewritten to improve its efficiency and
-to increase its functionality.  It should also be significantly more
-bug-free than the previous redisplay engine.
-A line that is not big enough to display at the bottom of the window
-will normally be clipped (so that it is partially visible) rather than
-not displayed at all.  The variable `pixel-vertical-clip-threshold'
-can be used to control the minimum space that must be available for a
-line to be clipped rather than not displayed at all.
-Tabs are displayed in such a way that things line up fairly well even
-in the presence of variable-width fonts and/or lines with
-multiply-sized fonts.
-Display tables are implemented, through the specifier variable
-`current-display-table'.  They can be buffer-local, window-local,
-frame-local, or device-local.  See below for info about specifiers.
-*** Toolbar
------------
-There is now built-in support for a toolbar.  A sample toolbar is
-visible by default at the top of the frame.  Four separate toolbars
-can be configured (at the top, bottom, left, and right of the frame).
-The toolbar specification is similar to the menubar specification.
-The up, down, and disabled glyphs of a toolbar button can be
-separately controlled.  Explanatory text can be echoed in the echo
-area when the mouse passes over a toolbar button.  The size, contents,
-and visibility of the various toolbars can be controlled on a
-per-buffer, per-window, per-frame, and per-device basis through the
-use of specifiers.  See the chapter on toolbars in the Lisp Reference
-Manual (included with XEmacs) for more information.
-The toolbar color and shadow thicknesses are currently controlled only
-through `modify-frame-parameters' and through X resources.  We are
-planning on making these controllable through specifiers as well. (Our
-hope is to make `modify-frame-parameters' obsolete, as it is a clunky
-and not very powerful mechanism.)
-Info, GNUS, VM, W3, and various other packages include custom toolbars
-with them.
-*** Menubar
------------
-Stay-up menus are implemented in the look-alike Motif menubar.
-The default menubar has been expanded to include most commonly-used
-functions in XEmacs.
-The options menu has been greatly expanded to include many more
-options.
-The menubar specification format has been greatly expanded.  Per-menu
-activation hooks can be specified through the :filter keyword (thus
-obsoleting `activate-menubar-hook'); this allows for fast response
-time when you have a large and complex menu.  You can dynamically
-control whether menu items are present through the :included and
-:config keywords. (The latter keyword implements a simple menubar
-configuration scheme, in conjunction with the variable
-`menubar-configuration'.) Many different menu-item separators (single
-or double line; solid or dashed; flat, etched-in, or etched-out) are
-available.  See the chapter on menus in the Lisp Reference Manual for
-more information about all of this.
-New functions `add-submenu' and `add-menu-button' are available.
-These supersede the older `add-menu' and `add-menu-item' functions,
-and provide a more powerful and consistent interface.
-New convenience functions for popping up the part or all of the
-menubar in a pop-up menu are available: `popup-menubar-menu' and
-`popup-buffer-menu'.
-Menus are now incrementally constructed greatly improving menubar
-response time.
-*** Scrollbars
---------------
-A look-alike Motif scrollbar is now included with XEmacs.  No longer
-will you have to suffer with ugly Athena scrollbars.
-Windows can now have horizontal scrollbars.  Normally they are visible
-when the window's buffer is set to truncate lines rather than wrap
-them (e.g. `(setq truncate-lines t)').
-All windows, not only the right-most ones, can have vertical
-scrollbars.
-The functions to change a scrollbar's width have been superseded by
-the specifier variables `scrollbar-width' and `scrollbar-height'.
-This allows their values to be controlled on a buffer-local,
-window-local, frame-local, and device-local basis.  See below.
-The scrollbars interact better with the event loop (for example, you
-can type `C-h k', do a scrollbar action, and see a description of this
-scrollbar action printed as if you had pressed a key sequence or
-selected a menu item).
-The scrollbar behavior can be reprogrammed, by advising the
-`scrollbar-*' functions.
-*** Key Bindings
-----------------
-The oft-used function `goto-line' now has its own binding: M-g.
-New bindings are available for scrolling the "other" window: M-next,
-M-prior, M-home, M-end. (On many keyboards, `next' and `prior'
-labelled `PgUp' and `PgDn'.)
-You can reactivate a deactivated Zmacs region, without having any
-other effects, with the binding M-C-z.
-The bindings `M-u', `M-l', and `M-c' now work on the region (if a
-region is active) or work on a word, as before.
-Shift-Control-G forces a "critical quit", which drops immediately into
-the debugger; see below.
-*** Modeline
-------------
-The modeline can now have a 3-d look; this is enabled by default.  The
-specifier variable `modeline-shadow-thickness' controls the size.
-The modeline can now be turned off on a per-buffer, per-window,
-per-frame, or per-device basis.  The specifier variable
-`has-modeline-p' controls whether the modeline is visible.  See below
-for details about the vastly powerful specifier mechanism.
-The modeline functions and variables have been renamed to be
-`*-modeline-*' rather than `*-mode-line-*'.  Aliases are provided for
-all the old names.
-Variable width fonts now work correctly when used in the modeline.
-*** Minibuffer, Echo Area
--------------------------
-The minibuffer is no longer constrained to be one line high.  The
-package rsz-minibuf.el is included to automatically resize the
-minibuffer when its contents are too big; enable this with
-`resize-minibuffer-mode'.
-The echo area is now a true buffer, called " *Echo Area*".  This
-allows you to customize the echo area behavior through
-before-change-functions and after-change-functions.
-*** Specifiers
---------------
-XEmacs has a new concept called "specifiers", used to configure most
-display options (toolbar size and contents, scrollbar size, face
-properties, modeline visibility and shadow-thickness, glyphs, display
-tables, etc.).  We are planning on converting all display
-characteristics to use specifiers, and obsoleting the clunky functions
-`frame-parameters' and `modify-frame-parameters'.  Specifically:
--- You can specify values (called "instantiators") for particular
-"locales" (i.e. buffers, windows, frames, devices, or a global value).
-When determining what the actual value (or "instance") of a specifier
-is, the specifications that are provided are searched from most
-specific (i.e. buffer-local) to most general (i.e. global), looking
-for a matching one.
--- You can specify multiple instantiators for a particular locale.
-For example, when specifying what the foreground color of a face
-is in a particular buffer, you could specify two instantiators:
-"dark sea green" and "green".  The color would then be dark sea
-green on devices that recognize that color, and green on other
-devices.  You have effectively provided a fallback value to make
-sure you get reasonable behavior on all devices.
--- You can add one or more tags to an instantiator, where a tag
-is a symbol that has been previously registered with XEmacs.
-This allows you to identify your instantiators for later
-removal in a way that won't interfere with other applications
-using the same specifier.  Furthermore, particular tags can
-be restricted to match only particular sorts of devices.
-Any tagged instantiator will be ignored if the device over which
-it is being instanced does not match any of its tags.  This
-allows you, for example, to restrict an instantiator to a
-particular device type (X or TTY) and/or class (color, grayscale,
-or mono). (You might want to specify, for example, that a
-particular face is displayed in green on color devices and is
-underlined on mono devices.)
--- A full API is provided for manipulating specifiers, and full
-documentation is provided in the Lisp Reference Manual.
-*** Basic Lisp Stuff
---------------------
-Common-Lisp backquote syntax is recognized.  For example, the old
-expression
-(` (a b (, c)))
-can now be written
-`(a b ,c)
-The old backquote syntax is still accepted.
-The new function `type-of' returns a symbol describing the type of a
-Lisp object (`integer', `string', `symbol', etc.)
-Symbols beginning with a colon (called "keywords") are treated
-specially in that they are automatically made self-evaluating when
-they are interned into `obarray'.  The new function `keywordp' returns
-whether a symbol begins with a colon.
-`get', `put', and `remprop' have been generalized to allow you to set
-and retrieve properties on many different kinds of objects: symbols,
-strings, faces, glyphs, and extents (for extents, however, this is not
-yet implemented).  They are joined by a new function `object-props'
-that returns all of the properties that have been set on an object.
-New functions `plists-eq' and `plists-equal' are provided for
-comparing property lists (a property list is an alternating list
-of keys and values).
-The Common-Lisp functions `caar', `cadr', `cdar', `cddr', `caaar', etc.
-(up to four a's and/or d's), `first', `second', `third', etc. (up to
-`tenth'), `last', `rest', and `endp' have been added, for more
-convenient manipulation of lists.
-New function `mapvector' maps over a sequence and returns a vector
-of the results, analogous to `mapcar'.
-New functions `rassoc', `remassoc', `remassq', `remrassoc', and
-`remrassq' are provided for working with alists.
-New functions `defvaralias', `variable-alias' and `indirect-variable'
-are provided for creating variable aliases.
-Strings have a modified-tick that is bumped every time a string
-is modified in-place with `aset' or `fillarray'.  This is retrieved
-with the new function `string-modified-tick'.
-New macro `push' destructively adds an element to the beginning of a
-list.  New macro `pop' destructively removes and returns the first
-element of a list.
-*** Buffers
------------
-Most functions that operate on buffer text now take an optional BUFFER
-argument, specifying which buffer they operate on.  (Previously, they
-always operated on the current buffer.)
-The new function `transpose-regions' is provided, ported from GNU
-Emacs.
-The new function `save-current-buffer' works like `save-excursion'
-but only saves the current buffer, not the location of point in
-that buffer.
-*** Devices
------------
-XEmacs has a new concept of "device", which is represents a particular
-X display or TTY connection.  `make-frame' has a new, optional device
-parameter that allows you to specify which device the frame is to be
-created on.
-Multiple simultaneous TTY and/or X connections may be made.  The
-specifier mechanism provides reasonable behavior of glyphs, faces,
-etc. over heterogeneous device types and over devices whose individual
-capabilities may vary.
-There is also a device type called "stream" that represents a STDIO
-device that has no redisplay or cursor-motion capabilities, such as
-the "glass terminal" that XEmacs uses when it is run noninteractively.
-There is not all that much you can do with stream devices currently;
-please let us know if there are good uses you can think of for this
-capability. (For example, log files?)
-A new device API is provided.  Functions are provided such as
-`device-name' (the name of the device, which generally is based on the
-X display or TTY file name), `device-type' (X, TTY, or stream),
-`device-class' (color, grayscale, or mono), etc.  See the Lisp
-Reference Manual.
-Many functions have been extended to contain an additional, optional
-device argument, where such an extension makes sense.  In general, if
-the argument is omitted, it is equivalent to specifying
-`(selected-device)'.
-Many previous functions and variables are obsoleted in favor of the
-device API.  For example, `window-system' is obsoleted by
-`device-type', and `x-color-display-p' and friends are obsoleted by
-`device-class'.
-** NOTE **: The obsolete variable `window-system' is going
-to be deleted soon, probably in 19.14.  Please correct all
-your code to use `device-type'.
-** INCOMPATIBLE CHANGE **: The function `x-display-visual-class'
-returns different values from previous versions of XEmacs.
-*** Errors, Warnings, C-g
--------------------------
-There is a new warnings system implemented.  Many warnings that were
-formerly displayed in various ad-hoc ways (e.g. warnings about screwy
-modifier mappings, messages about failures handling the mouse cursor
-and errors in a gc-hook) have been regularized through this system.
-The new function `warn' displays a warning before the next redisplay
-(the actually display of the warning messages is accomplished through
-`display-warning-buffer').  Both `warn' and `display-warning-buffer'
-are Lisp functions (the C code calls out to them as necessary), and
-thus you can customize the warning system.
-Under an X display, you can press Shift-Control-G to force a "critical
-quit".  This will immediately display a backtrace and pop you into the
-debugger, regardless of the settings of `inhibit-quit' and
-`debug-on-quit'.
-C-g now works properly even on systems that don't implement SIGIO or
-for which SIGIO is broken (e.g. IRIX 5.3 and older versions of Linux).
-In addition, the SIGIO support has been fixed for many systems on
-which it didn't always work properly before (e.g. HPUX and Solaris).
-*** Events
-----------
-** INCOMPATIBLE CHANGE **: Many event functions have been changed to
-accept and return windows instead of frames.
-New function: `event-live-p', specifying whether `deallocate-event'
-has been called on an event.
-The "menu event" type has been renamed to "misc-user event", and
-encompasses scrollbar events as well as menu events.  We are planning
-on making it also encompass toolbar events in a future release.
-New functions are provided for determining whether an particular
-sections of a frame: `event-over-border-p', `event-over-glyph-p',
-`event-over-modeline-p', `event-over-text-area-p', and
-`event-over-toolbar-p'.  The old, kludgey methods of checking the
-window-height, the internal-border-width, etc. are unreliable and
-should not be used.
-New functions `event-window-x-pixel' and `event-window-y-pixel' are
-provided for determining where in a particular window an event
-happened.
-New functions `event-glyph-x-pixel' and `event-glyph-y-pixel' are
-provided for determining where in a particular glyph an event
-happened.
-New function `event-closest-point', which returns the closest buffer
-position to the event even if the event did not occur over any text.
-New variable `unread-command-events', superseding the older
-`unread-command-event'.
-Many event-loop bugs have been fixed.
-*** Extents
------------
-The extent code has been largely rewritten.  It should be faster and
-more reliable.
-The text-property implementation has been greatly improved.
-Some new extent primitives are provided to return the position of the
-next or previous property change in a buffer.
-Extents can now have a parent specified; then all of its properties
-(except for the buffer it's in and its position in that buffer) come
-from that extent.  Hierarchies of such extents can be created.
-Extents now have a `detachable' property that controls what happens
-(they either get detached or shrink down to zero-length) when their
-text is deleted.  Previously, such extents would always be detached.
-The `invisible' property on extents now works.
-`map-extents' has three additional parameters that provide more
-control over which extents are mapped.
-`map-extents' deals better with changes made to extents in the
-buffer being mapped over.
-A new function `mapcar-extents' (an alternative to `map-extents') has
-been provided and should be easier to use than `map-extents'.
-*** Faces
----------
-Faces can now be buffer-local, window-local, and device-local as well
-as frame-local, and can be further restricted to a particular device
-type or class.  The way in which faces can be controlled is now based
-on the general and powerful specifier mechanism; see above.
-The new function `set-face-property' generalizes `set-face-font',
-`set-face-foreground', etc. and takes many new optional arguments, in
-accordance with the new specifier mechanism.
-The new functions `face-property' and `face-property-instance'
-generalize `face-font', `face-foreground', etc. and take many new
-optional arguments, in accordance with the new specifier mechanism.
-(`face-property' returns the value, if any, that was specified for a
-particular locale, and `face-property-instance' returns the actual
-value that will be used for display.  See the section on specifiers.)
-The functions `face-font', `face-foreground', `face-background',
-`set-face-font', `set-face-foreground', `set-face-background',
-etc. are now convenience functions, trivially implemented using
-`face-property' and `set-face-property' and take new optional
-arguments in accordance with those functions.  New convenience
-functions `face-font-instance', `face-foreground-instance',
-`face-background-instance', etc. are provided and are trivially
-implemented using `face-property-instance'.
-Inheritance of face properties can now be specified.  Each individual
-face property can inherit differently from other properties, or not
-inherit at all.
-You can set user-defined properties on faces using
-`set-face-property'.
-You can create "temporary" faces, which are faces that disappear
-when they are no longer in use.  This is as opposed to normal
-faces, which stay around forever.
-The function `make-face' takes a new optional argument specifying
-whether a face should be permanent or temporary, and returns the
-actual face object rather than the face symbol, as in previous
-versions of XEmacs.
-The function `face-list' takes a new optional argument specifying
-whether permanent, temporary, or both kinds of faces should be
-returned.
-Faces have new TTY-specific properties: `highlight', `reverse',
-`alternate', `blinking', and `dim'.
-Redisplay is smarter about dealing with face changes: changes to a
-particular face no longer cause all frames to be cleared and
-redisplayed.
-The Edit-Faces package is provided for interactively changing faces.
-A menu item on the options menu is provided for this.
-New functions are provided for retrieving the ascent, descent, height,
-and width of a character in a particular face.
-*** Fonts, Colors
------------------
-** INCOMPATIBLE CHANGE **: The old "font" and "pixel" objects are gone.
-In place are new objects "font specifier", "font instance", "color
-specifier", and "color instance".  Functions `font-name', `pixel-name'
-(an obsolete alias for `color-name'), etc. are now convenience
-functions for working with font and color specifiers.  Old code that
-is not too sophisticated about working with font and pixel objects may
-still work, though.  (For example, the idiom `(font-name (face-font
-'default))' still works.)
-You can now extract the RGB components of a color-instance object
-(similar to the old pixel object) with the function
-`color-instance-rgb-components'.  There is also a convenience function
-`color-rgb-components' for working with color specifiers.
-If there are no more colors available in the colormap, the nearest
-existing color will be used when allocating a new color.
-*** Frames
-----------
-What used to be called "screens" are now called "frames", for clarity
-and consistency with GNU Emacs.  Aliases are provided for all the old
-screen functions and variables, to avoid introducing a huge E-Lisp
-incompatibility.
-The frame code has been merged with GNU Emacs 19.28, providing
-improved functionality for many functions.
-*** Glyphs, Images, and Pixmaps
--------------------------------
-Glyphs (used in various places, i.e. as begin-glyphs and end-glyphs
-attached to extents and appearing in a buffer or in marginal
-annotations; as the truncator and continuor glyphs marking line wrap
-or truncation; as an overlay at the beginning of a line; as the
-displayable element in a toolbar button; etc.) can now be
-buffer-local, window-local, frame-local, and device-local, and can be
-further restricted to a particular device type or class.  The way in
-which faces can be controlled is now based on the general and powerful
-specifier mechanism; see above.
-** INCOMPATIBLE CHANGE **: The glyph and pixmap API has been completely
-overhauled.  A new Lisp object "glyph" is provided and should be used
-where the old "pixmap" object would have been used.  The pixmap object
-exists no longer.  There are also new Lisp objects "image specifier"
-and "image instance" (an image-instance is the closest equivalent to
-what a pixmap object was).  More work on glyphs and images is slated
-for 19.13.  The glyph and image docs in the Lisp Reference Manual are
-incomplete and will be finished in 19.13.
-The new function `set-glyph-property' allows setting of all the
-glyph properties (`baseline', `contrib-p', etc.).  Convenience
-functions for particular properties are also provided, just like
-for faces.
-You can set user-defined properties on glyphs using the new function
-`set-glyph-property'.
-When displaying pixmaps, existing, closest-matching colors will be
-used if the colormap is full.
-If the compface library is compiled into XEmacs, there is built-in
-support for displaying X-Face bitmaps. (These are typically small
-pictures of people's faces, included in a mail message through the
-X-Face: header.) VM and highlight-headers will automatically use the
-built-in X-Face support if it is available.
-Annotations in the right margin (as well as the left margin) are now
-implemented.  The left and right margin width functions have been
-superseded by the specifier variables `left-margin-width' and
-`right-margin-width', allowing much more flexible control through the
-specifier mechanism.
-** INCOMPATIBLE CHANGE **: The variable `use-left-overflow',
-for controlling annotations in the left margin, is now a specifier
-variable instead of a buffer-local variable.  (There is also a new
-variable `use-right-overflow', that is complementary.)
-*** Hashing
------------
-Two new types of weak hashtables can be created: key-weak and
-value-weak.  In a key-weak hashtable, an entry remains around
-if its key is referenced elsewhere, regardless of whether this
-is also the case for the value.  Value-weak hashtables are
-complementary. (This is as opposed to the traditional weak
-hashtables, where an entry remains around only if both the
-key and value are referenced elsewhere.) New functions
-`make-key-weak-hashtable' and `make-value-weak-hashtable'
-are provided for creating these hashtables.
-The new function `md5' is provided for performing an MD5
-hash of an object.  MD5 is a secure message digest algorithm
-developed by RSA, inc.
-*** Keymaps
------------
-The GNU Emacs concept of `function-key-map' is now partially
-implemented.  This allows conversion of function-key escape sequences
-such as `ESC [ 1 1 ~' into an equivalent human-readable keysym such as
-`F1'.  This work will be completed in 19.14.  The function-key map is
-device-local and controllable through the functions
-`device-function-key-map' and `set-device-function-key-map'.
-`where-is-internal' now correctly searches minor-mode keymaps,
-extent-local keymaps, etc.  As a side effect of this, menu items will
-now correctly show the keyboard equivalent for commands that are
-available through a minor-mode keymap, extent-local keymap, etc.
-** INCOMPATIBLE CHANGE **: The modifier key "Symbol" has
-been renamed to "Alt", for compatibility with the rest of the world.
-Keep in mind that on many keyboards, the key labelled "Alt" actually
-generates the "Meta" modifier.  (On Sun keyboards, however, the key
-labelled "Alt" does indeed generate the "Alt" modifier, and the key
-labelled with a diamond generates the "Meta" modifier.)
-*** Mouse, Active Region
-------------------------
-The mouse internals in mouse.el have been rewritten.  Hooks have been
-provided for easier customization of mouse behavior.  For example, you
-can now easily specify an action to be invoked on single-click
-(i.e. down-up without appreciable motion), double-click, drag-up, etc.
-Some code from GNU Emacs has been ported over, generalizing some of
-the X-specific mouse stuff.
-** INCOMPATIBLE CHANGE **: The function `set-mouse-position' accepts
-a window instead of a frame.
-New function `mouse-position' that obsoletes and is more powerful than
-`read-mouse-position'.
-New functions `mouse-pixel-position' and `set-mouse-pixel-position' for
-working with pixels instead of characters.
-The active (Zmacs) region is now highlighted using the `zmacs-region-face'
-instead of the `primary-selection-face'; this generalizes what used
-to be X-specific.
-New functions `region-active-p', `region-exists-p', and `activate-region'
-provide a uniform API for dealing with the region irrespective of
-whether the variable `zmacs-regions' is set.
-XEmacs is now a better X citizen with respect to the primary selection:
-it does not stomp on the primary selection quite so much.  This makes
-things more manageable if you set `zmacs-regions' to nil.
-*** Processes
--------------
-Various process race conditions and bugs have been fixed.  Problems
-with process termination not getting noticed until much later (if at
-all) should be gone now, as well as problems with zombie processes
-under some systems.
-SOCKS support is now included.  SOCKS is a package that allows hosts
-behind a firewall to gain full access to the Internet without
-requiring direct IP reachability.
-*** Windows
------------
-Windows 95 is still not out yet.
-** INCOMPATIBLE CHANGE **: The functions `locate-window-from-coordinates'
-and `window-edges' have been eliminated.  It no longer makes sense to
-work with windows in terms of character positions, because windows can
-(and often do) have many differently-sized fonts in them, because the
-3-D modeline is not exactly one line high, etc.
-The new functions `window-pixel-edges', `window-highest-p',
-`window-lowest-p', `frame-highest-window', and `frame-lowest-window'
-are provided as substitutes for the above-mentioned, deleted
-functions.
-The function `window-end' now takes an optional GUARANTEE argument
-that will ensure that the value is actually correct as of the next
-redisplay.
-The window code has been merged with GNU Emacs 19.28, providing
-improved functionality for many functions.
-*** System-Specific Information
--------------------------------
-Georg Nikodym's dynodump package is provided, for proper unexec()ing
-on Solaris systems.  Executables built on Solaris 2.3 can now run on
-Solaris 2.4 without crashing; similarly with executables built on one
-type of Sun machine and run on another.
-AIX 4.x is supported.
-The NeXTstep operating system is supported in TTY mode (this is still
-in beta).  There are plans to port XEmacs to the NeXTstep window
-system, but it may be awhile before this is complete.
-Problems with the `round' function causing arithmetic errors on HPUX 9
-have been fixed.
-You can now build XEmacs as an ELF executable on Linux systems that
-support ELF.
-Various other new system configurations are supported.
-*** Packages
-------------
-Most packages have been updated to the latest available versions.
-Some of the new Emacs Lisp packages ---
-Hyperbole: the everyday information manager.  Provides a Rolodex,
-	   allows links to be embedded in text, etc.
-OOBR: a sophisticated class browser for object-oriented languages.
-viper: a better VI emulator that allows Emacs and VI features
-to coexist happily.
-hm--html-menus: a sophisticated package for editing HTML code,
-		from Heiko Muenkel.
-ksh-mode.el: for editing shell scripts.
-lazy-lock.el: a lazy, on-the-fly fontifier.
-paren.el: an improved matching paren highlighter
-Major changes to existing packages --
-VM: has a toolbar, many other nice features.
-w3: has a toolbar, many other nice features.
-ediff: provides three-way merging, has a better user interface.
-info: has a toolbar.
-highlight-headers.el: now highlights URL's and makes them active so
-		      that when clicked either Netscape 1.1 is called
-		      or Emacs W3 is run.
-** Major Differences Between 19.10 and 19.11
-============================================
-The name has changed from "Lucid Emacs" to "XEmacs".  Along with this is a
-new canonical ftp site: cs.uiuc.edu:/pub/xemacs.
-XEmacs now has its very own World Wide Web page!  It contains a
-complete list of the FTP distribution sites, the most recent FAQ,
-pointers to Emacs Lisp packages not included with the distribution, and
-other useful stuff.  Check it out at http://xemacs.cs.uiuc.edu/.
-A preliminary New Users Guide.
-cc-mode.el now provides the default C, C++ and Objective-C modes.
-The primary goal of this release is stability.  Very few new features have
-been introduced but lots of bugs have been fixed.  Many of the Emacs Lisp
-packages have been updated.
-Some of the new Emacs Lisp packages ---
-tcl-mode.el:  major mode for editing TCL code
-fast-lock.el: saves and restores font-lock highlighting, greatly
-reducing the time necessary for loading a font-lock'ed
-file
-ps-print.el: prints buffers to Postscript printers preserving the
-buffer's bold and italic text attributes
-toolbar.el: provides a "fake" toolbar for use with XEmacs (an
-integrated one will be included with 19.12)
-** Major Differences Between 19.9 and 19.10
-===========================================
-The GNU `configure' system is now used to build lemacs.
-The Emacs Manual and Emacs Lisp Reference Manual now document version 19.10.
-If you notice any errors, please let us know.
-When pixmaps are displayed in a buffer, they contribute to the line height -
-that is, if the glyph is taller than the rest of the text on the line, the
-line will be as tall as necessary to display the glyph.
-In addition to using arbitrary sound files as emacs beeps, one can control
-the pitch and duration of the standard X beep, on X servers which allow that
-(Note: most don't.)
-There is support for playing sounds on systems with NetAudio servers.
-Minor modes may have mode-specific key bindings; keymaps may have an arbitrary
-number of parent maps.
-Menus can have toggle and radio buttons in them.
-There is a font selection menu.
-Some default key bindings have changed to match FSF19; the new bindings are
-Screen-related commands:
-C-x 5 2                 make-screen
-C-x 5 0                 delete-screen
-C-x 5 b                 switch-to-buffer-other-screen
-C-x 5 f                 find-file-other-screen
-C-x 5 C-f               find-file-other-screen
-C-x 5 m                 mail-other-screen
-C-x 5 o                 other-screen
-C-x 5 r                 find-file-read-only-other-screen
-Abbrev-related commands:
-C-x a l                 add-mode-abbrev
-C-x a C-a               add-mode-abbrev
-C-x a g                 add-global-abbrev
-C-x a +                 add-mode-abbrev
-C-x a i g               inverse-add-global-abbrev
-C-x a i l               inverse-add-mode-abbrev
-C-x a -                 inverse-add-global-abbrev
-C-x a e                 expand-abbrev
-C-x a '                 expand-abbrev
-Register-related commands:
-C-x r C-SPC             point-to-register
-C-x r SPC               point-to-register
-C-x r j                 jump-to-register
-C-x r s                 copy-to-register
-C-x r x                 copy-to-register
-C-x r i                 insert-register
-C-x r g                 insert-register
-C-x r r                 copy-rectangle-to-register
-C-x r c                 clear-rectangle
-C-x r k                 kill-rectangle
-C-x r y                 yank-rectangle
-C-x r o                 open-rectangle
-C-x r t                 string-rectangle
-C-x r w                 window-configuration-to-register
-Narrowing-related commands:
-C-x n n                 narrow-to-region
-C-x n w                 widen
-Other changes:
-C-x 3                   split-window-horizontally (was undefined)
-C-x -                   shrink-window-if-larger-than-buffer
-C-x +                   balance-windows
-The variable allow-deletion-of-last-visible-screen has been removed, since
-it was widely hated.  You can now always delete the last visible screen if
-there are other iconified screens in existence.
-ToolTalk support is provided.
-An Emacs screen can be placed within an "external client widget" managed
-by another application.  This allows an application to use an Emacs screen
-as its text pane rather than the standard Text widget that is provided
-with Motif or Athena.
-Additional compatibility with Epoch is provided (though this is not yet
-complete.)
-** Major Differences Between 19.8 and 19.9
-==========================================
-Scrollbars!  If you have Motif, these are real Motif scrollbars; otherwise,
-Athena scrollbars are used.  They obey all the usual resources of their
-respective toolkits.
-There is now an implementation of dialog boxes based on the Athena
-widgets, as well as the existing Motif implementation.
-This release works with Motif 1.2 as well as 1.1.  If you link with Motif,
-you do not also need to link with Athena.
-If you compile lwlib with both USE_MOTIF and USE_LUCID defined (which is the
-recommended configuration) then the Lucid menus will draw text using the Motif
-string-drawing library, instead of the Xlib one.  The reason for this is that
-one can take advantage of the XmString facilities for including non-Latin1
-characters in resource specifications.  However, this is a user-visible change
-in that, in this configuration, the menubar will use the "*fontList" resource
-in preference to the "*font" resource, if it is set.
-It's possible to make extents which are copied/pasted by kill and undo.
-There is an implementation of FSF19-style text properties based on this.
-There is a new variable, minibuffer-max-depth, which is intended to circumvent
-a common source of confusion among new Emacs users.  Since, under a window
-system, it's easy to jump out of the minibuffer (by doing M-x, then getting
-distracted, and clicking elsewhere) many, many novice users have had the
-problem of having multiple minibuffers build up, even to the point of
-exhausting the lisp stack.  So the default behavior is to disallow the
-minibuffer to ever be reinvoked while active; if you attempt to do so, you
-will be prompted about it.
-There is a new variable, teach-extended-commands-p, which if set, will cause
-`M-x' to remind you of any key bindings of the command you just invoked the
-"long way."
-There are menus in Dired, Tar, Comint, Compile, and Grep modes.
-There is a menu of window management commands on the right mouse button over
-the modelines.
-Popup menus now have titles at the top; this is controlled by the new
-variable `popup-menu-titles'.
-The `Find' key on Sun keyboards will search for the next (or previous)
-occurrence of the selected text, as in OpenWindows programs.
-The `timer' package has been renamed to `itimer' to avoid a conflict with
-a different package called `timer'.
-VM 5.40 is included.
-W3, the emacs interface to the World Wide Web, is included.
-Felix Lee's GNUS speedups have been installed, including his new version of
-nntp.el which makes GNUS efficiently utilize the NNTP XOVER command if
-available (which is much faster.)
-GNUS should also be much friendlier to new users: it starts up much faster,
-and doesn't (necessarily) subscribe you to every single newsgroup.
-The byte-compiler issues a new class of warnings: variables which are
-bound but not used.  This is merely an advisory, and does not mean the
-code is incorrect; you can disable these warnings in the usual way with
-the `byte-compiler-options' macro.
-the `start-open' and `end-open' extent properties, for specifying whether
-characters inserted exactly at a boundary of an extent should go into the
-extent or out of it, now work correctly.
-The `extent-data' slot has been generalized/replaced with a property list,
-so it's easier to attach arbitrary data to extent objects.
-The `event-modifiers' and `event-modifier-bits' functions work on motion
-events as well as other mouse and keyboard events.
-Forms-mode uses fonts and read-only regions.
-The behavior of the -geometry command line option should be correct now.
-The `iconic' screen parameter works when passed to x-create-screen.
-The user's manual now documents Lucid Emacs 19.9.
-The relocating buffer allocator is turned on by default; this means that when
-buffers are killed, their storage will be returned to the operating system,
-and the size of the emacs process will shrink.
-CAVEAT: code which contains calls to certain `face' accessor functions will
-need to be recompiled by version 19.9 before it will work.  The functions
-whose callers must be recompiled are: face-font, face-foreground,
-face-background, face-background-pixmap, and face-underline-p.  The symptom
-of this problem is the error "Wrong type argument, arrayp, #<face ... >".
-The .elc files generated by version 19.9 will work in 19.6 and 19.8, but
-older .elc files which contain calls to these functions will not work in 19.9.
-Work In Progress:
-- We have been in the process of internationalizing Lucid Emacs.  This code is
-***not*** ready for general use yet.  However, the code is included (and
-turned off by default) in this release.
-- If you define I18N2 at compile-time, then sorting/collation will be done
-according to the locale returned by setlocale().
-- If you define I18N3 at compile-time, then all messages printed by lemacs
-will be filtered through the gettext() library routine, to enable the use
-of locale-specific translation catalogues.  The current implementation of
-this is quite dependent on Solaris 2, and has a very large impact on
-existing code, therefore we are going to be making major changes soon.
-(You'll notice calls to `gettext' and `GETTEXT' scattered around much of
-the lisp and C code; ignore it, this will be going away.)
-- If you define I18N4 at compile-time, then lemacs will internally use a
-wide representation of characters, enabling the use of large character
-sets such as Kanji.  This code is very OS dependent: it requires X11R5,
-and several OS-supplied library routines for reading and writing wide
-characters (getwc(), putwc(), and a few others.)  Performance is also a
-problem.  This code is also scheduled for a major overhaul, with the
-intent of improving performance and portability.
-Our eventual goal is to merge with MULE, or at least provide the same base
-level of functionality.  If you would like to help out with this, let us
-know.
-- Other work-in-progress includes Motif drag-and-drop support, ToolTalk
-support, and support for embedding an Emacs widget inside another
-application (where it can function as that other application's text-entry
-area).  This code has not been extensively tested, and may (or may not)
-have portability problems, but it's there for the adventurous.  Comments,
-suggestions, bug reports, and especially fixes are welcome.  But have no
-expectations that this experimental code will work at all.
-** Major Differences Between 19.6 and 19.8
-==========================================
-There were almost no differences between versions 19.6 and 19.7; version 19.7
-was a bug-fix release that was distributed with Energize 2.1.
-Lucid Emacs 19.8 represents the first stage of the Lucid Emacs/Epoch merger.
-The redisplay engine now in lemacs is an improved descendant of the Epoch
-redisplay.  As a result, many bugs have been eliminated, and several disabled
-features have been re-enabled.  Notably:
-Selective display (and outline-mode) work.
-Horizontally split windows work.
-The height of a line is the height of the tallest font displayed on that line;
-it is possible for a screen to display lines of differing heights. (Previously,
-the height of all lines was the height of the tallest font loaded.)
-There is lisp code to scale fonts up and down, for example, to load the next-
-taller version of a font.
-There is a new internal representation for lisp objects, giving emacs-lisp 28
-bit integers and a 28 bit address space, up from the previous maximum of 26.
-We expect eventually to increase this to 30 bit integers and a 32 bit address
-space, eliminating the need for DATA_SEG_BITS on some architectures.  (On 64
-bit machines, add 32 to all of these numbers.)
-GC performance is improved.
-Various X objects (fonts, colors, cursors, pixmaps) are accessible as first-
-class lisp objects, with finalization.
-An alternate interface to embedding images in the text is provided, called
-"annotations."  You may create an "annotation margin" which is whitespace at
-the left side of the screen that contains only annotations, not buffer text.
-When using XPM files, one can specify the values of logical color names to be
-used when loading the files.
-It is possible to resize windows by dragging their modelines up and down.  More
-generally, it is possible to add bindings for mouse gestures on the modelines.
-There is support for playing sound files on HP machines.
-ILISP version 5.5 is included.
-The Common Lisp #' read syntax is supported (#' is to "function" as ' is to
-"quote".)
-The `active-p' slot of menu items is now evaluated, so one can put arbitrary
-lisp code in a menu to decide whether that item should be selectable, rather
-than doing this with an `activate-menubar-hook'.
-The X resource hierarchy has changed slightly, to be more consistent.  It used
-to be
-argv[0]                 SCREEN-NAME     pane    screen
-ApplicationShell        EmacsShell      Paned   EmacsFrame
-now it is
-argv[0]                 shell           pane    SCREEN-NAME
-ApplicationShell        EmacsShell      Paned   EmacsFrame
-The Lucid Emacs sources have been largely merged with FSF version 19; this
-means that the lisp library contains the most recent releases of various
-packages, and many new features of FSF 19 have been incorporated.
-Because of this, the lemacs sources should also be substantially more portable.
-** Major Differences Between 19.4 and 19.6
-==========================================
-There were almost no differences between versions 19.4 and 19.5; we fixed
-a few minor bugs and repacked 19.4 as 19.5 for a CD-ROM that we gave away
-as a trade show promotion.
-The primary goal of the 19.6 release is stability, rather than improved
-functionality, so there aren't many user-visible changes.  The most notable
-changes are:
-- The -geometry command-line option now correctly overrides geometry
-specifications in the resource database.
-- The `width' and `height' screen-parameters work.
-- Font-lock-mode considers the comment start and end characters to be
-a part of the comment.
-- The lhilit package has been removed.  Use font-lock-mode instead.
-- vm-isearch has been fixed to work with isearch-mode.
-- new versions of ispell and calendar.
-- sccs.el has menus.
-Lots of bugs were fixed, including the problem that lemacs occasionally
-grabbed the keyboard focus.
-Also, as of Lucid Emacs 19.6 and Energize 2.0 (shipping now) it is possible
-to compile the public release of Lucid Emacs with support for Energize; so
-now Energize users will be able to build their own Energize-aware versions
-of lemacs, and will be able to use newer versions of lemacs as they are
-released to the net.  (Of course, this is not behavior covered by your
-Energize support contract; you do it at your own risk.)
-I have not incorporated all portability patches that I have been sent since
-19.4; I will try to get to them soon.  However, if you need to make any
-changes to lemacs to get it to compile on your system, it would be quite
-helpful if you would send me context diffs (diff -c) against version 19.6.
-** Major Differences Between 19.3 and 19.4
-==========================================
-Prototypes have been added for all functions.  Emacs compiles in the strict
-ANSI modes of lcc and gcc, so portability should be vastly improved.
-Many many many many core leaks have been plugged, especially in screen
-creation and deletion.
-The float support reworked to be more portable and ANSI conformant.  This
-resulted in these new configuration parameters: HAVE_INVERSE_HYPERBOLIC,
-HAVE_CBRT, HAVE_RINT, FLOAT_CHECK_ERRNO, FLOAT_CATCH_SIGILL,
-FLOAT_CHECK_DOMAIN.  Let us know if you had to change the defaults on your
-architecture.
-The SunOS unexec has been rewritten, and now works with either static or
-dynamic libraries, depending on whether -Bstatic or -Bdynamic were specified
-at link-time.
-Small (character-sized) bitmaps can be mixed in with buffer text via the new
-functions set-extent-begin-glyph and set-extent-end-glyph.  (This is actually
-a piece of functionality that Energize has been using for a while, but we've
-just gotten around to making it possible to use it without Energize.  See how
-nice we are?  Go buy our product.)
-If compiled with Motif support, one can pop up dialog boxes from emacs lisp.
-We encourage someone to contribute Athena an version of this code; it
-shouldn't be much work.
-If dialog boxes are available, then y-or-n-p and yes-or-no-p use dialog boxes
-instead of the minibuffer if invoked as a result of a command that was
-executed from a menu instead of from the keyboard.
-Multiple screen support works better; check out doc of get-screen-for-buffer.
-The default binding of backspace is the same as delete.  (C-h is still help.)
-A middle click while the minibuffer is active does completion if you click on
-a highlighted completion, otherwise it executes the global binding of button2.
-New versions of Barry Warsaw's c++-mode and syntax.c.  Font-lock-mode works
-with C++ mode now.
-The semantics of activate-menubar-hook has changed; the functions are called
-with no arguments now.
-`truename' no longer hacks the automounter; use directory-abbrev-alist instead.
-Most minibuffer handling has been reimplemented in emacs-lisp.
-There is now a builtin minibuffer history mechanism which replaces gmhist.
-** Major Differences Between 19.2 and 19.3
-==========================================
-The ISO characters have correct case and syntax tables now, so the word-motion
-and case-converting commands work sensibly on them.
-If you set ctl-arrow to an integer, you can control exactly which characters
-are printable.  (There will be a less crufty way to do this eventually.)
-Menubars can now be buffer local; the function set-screen-menubar no longer
-exists.  Look at GNUS and VM for examples of how to do this, or read
-menubar.el.
-When emacs is reading from the minibuffer with completions, any completions
-which are visible on the screen will highlight when the mouse moves over them;
-clicking middle on a completion is the same as typing it at the minibuffer.
-Some implications of this:  The *Completions* buffer is always mousable.  If
-you're using the completion feature of find-tag, your source code will be
-mousable when you type M-.  Dired buffers will be mousable as soon as you
-type ^X^F.  And so on.
-The old isearch code has been replaced with a descendant of Dan LaLiberte's
-excellent isearch-mode; it is more customizable, and generally less bogus.
-You can search for "composed" characters.  There are new commands, too; see
-the doc for ^S, or the NEWS file.
-A patched GNUS 3.14 is included.
-The user's manual now documents Lucid Emacs 19.3.
-A few more modes have mouse and menu support.
-The startup code should be a little more robust, and give you more reasonable
-error messages when things aren't installed quite right (instead of the
-ubiquitous "cannot open DISPLAY"...)
-Subdirectories of the lisp directory whose names begin with a hyphen or dot
-are not automatically added to the load-path, so you can use this to avoid
-accidentally inflicting experimental software on your users.
-I've tried to incorporate all of the portability patches that were sent to
-me; I tried to solve some of the problems in different ways than the
-patches did, so let me know if I missed something.
-Some systems will need to define NEED_STRDUP, NEED_REALPATH, HAVE_DREM, or
-HAVE_REMAINDER in config.h.  Really this should be done in the appropriate
-s- or m- files, but I don't know which systems need these and which don't.
-If yours does, let me know which file it should be in.
-Check out these new packages:
-blink-paren.el: causes the matching parenthesis to flash on and off whenever
-the cursor is sitting on a paren-syntax character.
-pending-del.el: Certain commands implicitly delete the highlighted region:
-Typing a character when there is a highlighted region replaces
-that region with the typed character.
-font-lock.el:   A code-highlighting package, driven off of syntax tables, so
-that it understands block comments, strings, etc.  The
-insertion hook is used to fontify text as you type it in.
-shell-font.el:  Displays your shell-buffer prompt in boldface.
-* The History of XEmacs
-=======================
-This product is an extension of GNU Emacs, previously known to some as
-"Lucid Emacs" or "ERA".  It was initially based on an early version of Emacs
-Version 19 from the Free Software Foundation and has since been kept
-up-to-date with recent versions of that product.  It stems from a
-collaboration of Lucid, Inc. with SunSoft DevPro (a division of Sun
-Microsystems, Inc.; formerly called SunPro) and the University of Illinois.
-NOTE: Lucid, Inc. is currently out of business but development on XEmacs
-continues strong.  Recently, Amdahl Corporation and INS Engineering have
-both contributed significantly to the development of XEmacs.
-* What's Different?
-===================
-** Differences between XEmacs and GNU Emacs 19
-==================================================
-In XEmacs 20, characters are first-class objects.  Characters can be
-converted to integers, but are not integers.  FSF 19, XEmacs 19, and Mule
-represent them as integers.
-In XEmacs, events are first-class objects.  FSF 19 represents them as
-integers, which obscures the differences between a key gesture and the
-ancient ASCII code used to represent a particular overlapping subset of them.
-In XEmacs, keymaps are first-class opaque objects.  FSF 19 represents them as
-complicated combinations of association lists and vectors.  If you use the
-advertised functional interface to manipulation of keymaps, the same code
-will work in XEmacs, Emacs 18, and GNU Emacs 19; if your code depends
-on the underlying implementation of keymaps, it will not.
-XEmacs uses "extents" to represent all non-textual aspects of buffers;
-FSF 19 uses two distinct objects, "text properties" and "overlays",
-which divide up the functionality between them.  Extents are a
-superset of the functionality of the two FSF data types.  The full FSF
-19 interface to text properties and overlays is supported in XEmacs
-(with extents being the underlying representation).
-Extents can be made to be copied into strings, and thus restored by kill
-and yank.  Thus, one can specify this behavior on either "extents" or
-"text properties", whereas in FSF 19 text properties always have this
-behavior and overlays never do.
-Many more packages are provided standard with XEmacs than with FSF 19.
-Images of arbitrary size can be embedded in a buffer.
-Variable width fonts work.
-The height of a line is the height of the tallest font on that line, instead
-of all lines having the same height.
-XEmacs uses the MIT "Xt" toolkit instead of raw Xlib calls, which
-makes it be a more well-behaved X citizen (and also improves
-portability).  A result of this is that it is possible to include
-other Xt "Widgets" in the XEmacs window.  Also, XEmacs understands the
-standard Xt command-line arguments.
-XEmacs provides support for ToolTalk on systems that have it.
-XEmacs can ask questions using popup dialog boxes.  Any command executed from
-a menu will ask yes/no questions with dialog boxes, while commands executed
-via the keyboard will use the minibuffer.
-XEmacs has a built-in toolbar.  Four toolbars can actually be configured:
-top, bottom, left, and right toolbars.
-XEmacs has vertical and horizontal scrollbars.  Unlike in FSF 19 (which
-provides a primitive form of vertical scrollbar), these are true toolkit
-scrollbars.  A look-alike Motif scrollbar is provided for those who
-don't have Motif. (Even for those who do, the look-alike may be preferable
-as it is faster.)
-If you're running on a machine with audio hardware, you can specify sound
-files for XEmacs to play instead of the default X beep.  See the documentation
-of the function load-sound-file and the variable sound-alist.
-An XEmacs frame can be placed within an "external client widget" managed by
-another application.  This allows an application to use an XEmacs frame as its
-text pane rather than the standard Text widget that is provided with Motif or
-Athena.  XEmacs supports Motif applications, generic Xt (e.g. Athena)
-applications, and raw Xlib applications.
-Here are some more specifics about the XEmacs implementation:
-*** The Input Model
--------------------
-The fundamental unit of input is an "event" instead of a character.  An
-event is a new data type that contains several pieces of information.
-There are several kinds of event, and corresponding accessor and utility
-functions.  We tried to abstract them so that they would apply equally
-well to a number of window systems.
-NOTE: All timestamps are measured as milliseconds since Emacs started.
-key_press_event
-event_channel	A token representing which keyboard generated it.
-			For this kind of event, this is a console object.
-timestamp		When it happened
-key			What keysym this is; a character or a symbol.
-			If it is a character, it will be a printing
-			ASCII character.
-modifiers		Bucky-bits on that key: control, meta, etc.
-			For most keys, Shift is not a bit; that is implicit
-			in the keyboard layout.
-button_press_event
-button_release_event
-event_channel	A token representing which mouse generated it.
-			For this kind of event, this is a frame object.
-timestamp		When it happened
-button		What button went down or up.
-modifiers		Bucky-bits on that button: shift, control, meta, etc.
-x, y		Where it was at the button-state-change (in pixels).
-pointer_motion_event
-event_channel	A token representing which mouse generated it.
-			For this kind of event, this is a frame object.
-timestamp		When it happened
-x, y		Where it was after it moved (in pixels).
-modifiers		Bucky-bits down when the motion was detected.
-			(Possibly not all window systems will provide this?)
-process_event
-timestamp		When it happened
-process		the emacs "process" object in question
-timeout_event
-timestamp		Now (really, when the timeout was signaled)
-interval_id		The ID returned when the associated call to
-			add_timeout_cb() was made
-	------ the rest of the fields are filled in by Emacs -----
-id_number		The Emacs timeout ID for this timeout (more
-			than one timeout event can have the same value
-			here, since Emacs timeouts, as opposed to
-			add_timeout_cb() timeouts, can resignal
-			themselves)
-function		An elisp function to call when this timeout is
-			processed.
-object		The object passed to that function.
-eval_event
-timestamp		When it happened
-function		An elisp function to call with this event object.
-object		Anything.
-			This kind of event is used internally; sometimes the
-			window system interface would like to inform emacs of
-			some user action (such as focusing on another frame)
-			but needs that to happen synchronously with the other
-			user input, like keypresses.  This is useful when
-			events are reported through callbacks rather
-			than in the standard event stream.
-misc_user_event
-timestamp		When it happened
-function		An elisp function to call with this event object.
-object		Anything.
-			This is similar to an eval_event, except that it is
-			generated by user actions: selections in the
-			menubar or scrollbar actions.  It is a "command"
-			event, like key and mouse presses (and unlike mouse
-			motion, process output, and enter and leave window
-			hooks).  In many ways, eval_events are not the same
-			as keypresses or misc_user_events.
-magic_event
-			No user-serviceable parts within.  This is for things
-			like KeymapNotify and ExposeRegion events and so on
-			that emacs itself doesn't care about, but which it
-			must do something with for proper interaction with
-			the window system.
-			Magic_events are handled somewhat asynchronously, just
-			like subprocess filters.  However, occasionally a
-			magic_event needs to be handled synchronously; in that
-			case, the asynchronous handling of the magic_event will
-			push an eval_event back onto the queue, which will be
-			handled synchronously later.  This is one of the
-			reasons why eval_events exist; I'm not entirely happy
-			with this aspect of this event model.
-The function `next-event' blocks and returns one of the above-described
-event objects.  The function `dispatch-event' takes an event and processes
-it in the appropriate way.
-For a process-event, dispatch-event calls the process's handler; for a
-mouse-motion event, the mouse-motion-handler hook is called, and so on.
-For magic-events, dispatch-event does window-system-dependent things,
-including calling some non-window-system-dependent hooks: map-frame-hook,
-unmap-frame-hook, mouse-enter-frame-hook, and mouse-leave-frame-hook.
-The function `next-command-event' calls `next-event' until it gets a key or
-button from the user (that is, not a process, motion, timeout, or magic
-event).  If it gets an event that is not a key or button, it calls
-`dispatch-event' on it immediately and reads another one.  The
-next-command-event function could be implemented in Emacs Lisp, though it
-isn't.  Generally one should call `next-command-event' instead of
-`next-event'.
-read-char calls next-command-event; if it doesn't get an event that can be
-converted to an ASCII character, it signals an error.  Otherwise it returns
-an integer.
-The variable `last-command-char' always contains an integer, or nil (if the
-last read event has no ASCII equivalent, as when it is a mouse-click or a
-non-ASCII character chord.)
-The new variable `last-command-event' holds an event object, that could be
-a non-ASCII character, a button click, a menu selection, etc.
-The variable `unread-command-char' no longer exists, and has been replaced
-by `unread-command-events'.  With the new event model, it is incorrect for
-code to do (setq unread-command-char (read-char)), because all user-input
-can't be represented as ASCII characters.  *** This is an incompatible
-change.  Code which sets `unread-command-char' must be updated to use the
-combination of `next-command-event' and `unread-command-events' instead.
-The functions `this-command-keys' and `recent-keys' return a vector of
-event objects, instead of a string of ASCII characters.  *** This also
-is an incompatible change.
-Almost nothing happens at interrupt level; the SIGIO handler simply sets a
-flag, and later, the X event queue is scanned for KeyPress events which map
-to ^G.  All redisplay happens in the main thread of the process.
-*** Keymaps
------------
-Instead of keymaps being alists or obarrays, they are a new primary data
-type.  The only user access to the contents of a keymap is through the
-existing keymap-manipulation functions, and a new function, map-keymap.
-This means that existing code that manipulates keymaps may need to
-be changed.
-One of our goals with the new input and keymap code was to make more
-character combinations available for binding, besides just ASCII and
-function keys.  We want to be able bind different commands to Control-a
-and Control-Shift-a; we also want it to be possible for the keys Control-h
-and Backspace (and Control-M and Return, and Control-I and Tab, etc) to
-be distinct.
-One of the most common complaints that new Emacs users have is that backspace
-is help.  The answer is to play around with the keyboard-translate-table, or
-be lucky enough to have a system administrator who has done this for you
-already; but if it were possible to bind backspace and C-h to different
-things, then (under a window manager at least) both backspace and delete
-would delete a character, and ^H would be help.  There's no need to deal
-with xmodmap, kbd-translate-table, etc.
-Here are some more examples: suppose you want to bind one function to Tab,
-and another to Control-Tab.  This can't be done if Tab and Control-I are the
-same thing.  What about control keys that have no ASCII equivalent, like
-Control-< ?  One might want that to be bound to set-mark-at-point-min.  We
-want M-C-Backspace to be kill-backward-sexp.  But we want M-Backspace to be
-kill-backward-word.  Again, this can't be done if Backspace and C-h are
-indistinguishable.
-The user represents keys as a string of ASCII characters (when possible and
-convenient), or as a vector of event objects, or as a vector of "key
-description lists", that looks like (control a), or (control meta delete)
-or (shift f1).  The order of the modifier-names is not significant, so
-(meta control x) and (control meta x) are the same.
-`define-key' knows how to take any of the above representations and store them
-into a keymap.  When Emacs wants to return a key sequence (this-command-keys,
-recent-keys, keyboard-macros, and read-key-sequence, for example) it returns
-a vector of event objects.  Keyboard macros can also be represented as ASCII
-strings or as vectors of key description lists.
-This is an incompatible change: code which calls `this-command-keys',
-`recent-keys', `read-key-sequence', or manipulates keyboard-macros probably
-needs to be changed so that it no longer assumes that the returned value is a
-string.
-Control-Shift-a is specified as (control A), not (control shift a), since A
-is a two-case character.  But for keys that don't have an upper case
-version, like F1, Backspace, and Escape, you use the (shift backspace) syntax.
-See the doc string for our version of define-key, reproduced below in the
-`Changed Functions' section.  Note that when the KEYS argument is a string,
-it has the same semantics as the v18 define-key.
-*** Xt Integration
-------------------
-The heart of the event loop is implemented in terms of the Xt event functions
-(specifically XtAppProcessEvent), and uses Xt's concept of timeouts and
-file-descriptor callbacks, eliminating a large amount of system-dependent code
-(Xt does it for you.)
-If Emacs is compiled with support for X, it uses the Xt event loop even when
-Emacs is not running on an X display (the Xt event loop supports this).  This
-makes it possible to run Emacs on a dumb TTY, and later connect it to one or
-more X servers.  It should also be possible to later connect an existing Emacs
-process to additional TTY's, although this code is still experimental.  (Our
-intent at this point is not to have an Emacs that is being used by multiple
-people at the same time: it is to make it possible for someone to go home, log
-in on a dialup line, and connect to the same Emacs process that is running
-under X in their office without having to recreate their buffer state and so
-on.)
-If Emacs is not compiled with support for X, then it instead uses more general
-code, something like what v18 does; but this way of doing things is a lot more
-modular.
-(Linking Emacs with Xt seems to only add about 300k to the executable size,
-compared with an Emacs linked with Xlib only.)
-*** Region Highlighting
------------------------
-If the variable `zmacs-regions' is true, then the region between point and
-mark will be highlighted when "active".  Those commands which push a mark
-(such as C-SPC, and C-x C-x) make the region become "active" and thus
-highlighted.  Most commands (all non-motion commands, basically) cause it to
-become non-highlighted (non-"active").  Commands that operate on the region
-(such as C-w, C-x C-l, etc.) only work if the region is in the highlighted
-state.
-zmacs-activate-region-hook and zmacs-deactivate-region-hook are run at the
-appropriate times; under X, zmacs-activate-region-hook makes the X selection
-be the region between point and mark, thus doing two things at once: making
-the region and the X selection be the same; and making the region highlight
-in the same way as the X selection.
-If `zmacs-regions' is true, then the `mark-marker' command returns nil unless
-the region is currently in the active (highlighted) state.  With an argument
-of t, this returns the mark (if there is one) regardless of the active-region
-state.  You should *generally* not use the mark unless the region is active,
-if the user has expressed a preference for the active-region model.  Watch
-out!  Moving this marker changes the mark position.  If you set the marker not
-to point anywhere, the buffer will have no mark.
-In this way, the primary selection is a fairly transitory entity; but
-when something is copied to the kill ring, it is made the Clipboard
-selection.  It is also stored into CUT_BUFFER0, for compatibility with
-X applications that don't understand selections (like Emacs18).
-Compatibility note: if you have code which uses (mark) or (mark-marker),
-then you need to either: change those calls to (mark t) or (mark-marker t);
-or simply bind `zmacs-regions' to nil around the call to mark or mark-marker.
-This is probably the best solution, since it will work in Emacs 18 as well.
-*** Menubars and Dialog Boxes
------------------------------
-Here is an example of a menubar definition:
-(defvar default-menubar
-'(("File"     ["Open File..."         find-file               t]
-["Save Buffer"          save-buffer             t]
-["Save Buffer As..."    write-file              t]
-["Revert Buffer"        revert-buffer           t]
-"-----"
-["Print Buffer"         lpr-buffer              t]
-"-----"
-["Delete Frame"         delete-frame            t]
-["Kill Buffer..."       kill-buffer             t]
-["Exit Emacs"           save-buffers-kill-emacs t]
-)
-("Edit"     ["Undo"                 advertised-undo         t]
-["Cut"                  kill-primary-selection  t]
-["Copy"                 copy-primary-selection  t]
-["Paste"                yank-clipboard-selection t]
-["Clear"                delete-primary-selection t]
-)
-...))
-The first element of each menu item is the string to print on the menu.
-The second element is the callback function; if it is a symbol, it is
-invoked with `call-interactively.'  If it is a list, it is invoked with
-`eval'.
-If the second element is a symbol, then the menu also displays the key that
-is bound to that command (if any).
-The third element of the menu items determines whether the item is selectable.
-It may be t, nil, or a form to evaluate.  Also, a hook is run just before a
-menu is exposed, which can be used to change the value of these slots.
-For example, there is a hook that makes the "undo" menu item be selectable
-only in the cases when `advertised-undo' would not signal an error.
-Menus may have other menus nested within them; they will cascade.
-There are utility functions for adding items to menus, deleting items,
-disabling them, etc.
-The function `popup-menu' takes a menu description and pops it up.
-The function `popup-dialog-box' takes a dialog-box description and pops
-it up.  Dialog box descriptions look a lot like menu descriptions.
-The menubar, menu, and dialog-box code is implemented as a library,
-with an interface which hides the toolkit that implements it.
-*** Isearch Changes
--------------------
-Isearch has been reimplemented in a different way, adding some new features,
-and causing a few incompatible changes.
--  the old isearch-*-char variables are no longer supported.  In the old
-system, one could make ^A mean "repeat the search" by doing something
-like (setq search-repeat-char ?C-a).  In the new system, this is
-accomplished with
-(define-key isearch-mode-map "\C-a" 'isearch-repeat-forward)
--  The advantage of using the normal keymap mechanism for this is that you
-can bind more than one key to an isearch command: for example, both C-a
-and C-s could do the same thing inside isearch mode.  You can also bind
-multi-key sequences inside of isearch mode, and bind non-ASCII keys.
-For example, to use the F1 key to terminate a search:
-(define-key isearch-mode-map 'f1 'isearch-exit)
-or to make ``C-c C-c'' terminate a search:
-(define-key isearch-mode-map "\C-c\C-c" 'isearch-exit)
--  If isearch is behaving case-insensitively (the default) and you type an
-upper case character, then the search will become case-sensitive.  This
-can be disabled by setting `search-caps-disable-folding' to nil.
--  There is a history ring of the strings previously searched for; typing
-M-p or M-n while searching will cycle through this ring.  Typing M-TAB
-will do completion across the set of items in the history ring.
--  The ESC key is no longer used to terminate an incremental search.  The
-RET key should be used instead.  This change is necessary for it to be
-possible to bind "meta" characters to isearch commands.
-*** Startup Code Changes
-------------------------
-The initial X frame is mapped before the user's .emacs file is executed.
-Without this, there is no way for the user to see any error messages
-generated by their .emacs file, any windows created by the .emacs file
-don't show up, and the copyleft notice isn't shown.
-The default values for load-path, exec-path, lock-directory, and
-Info-directory-list are not (necessarily) built into Emacs, but are
-computed at startup time.
-First, Emacs looks at the directory in which its executable file resides:
-o  If that directory contains subdirectories named "lisp" and "lib-src",
-then those directories are used as the lisp library and exec directory.
-o  If the parent of the directory in which the emacs executable is located
-contains "lisp" and "lib-src" subdirectories, then those are used.
-o  If ../lib/xemacs-<version> (starting from the directory in which the
-emacs executable is located) contains a "lisp" subdirectory and either
-a "lib-src" subdirectory or a <configuration-name> subdirectory, then
-those are used.
-o  If the emacs executable that was run is a symbolic link, then the link
-is chased, and the resultant directory is checked as above.
-(Actually, it doesn't just look for "lisp/", it looks for "lisp/prim/",
-which reduces the chances of a false positive.)
-If the lisp directory contains subdirectories, they are added to the default
-load-path as well.  If the site-lisp directory exists and contains
-subdirectories, they are then added.  Subdirectories whose names begin with
-a dot or a hyphen are not added to the load-path.
-These heuristics fail if the Emacs binary was copied from the main Emacs
-tree to some other directory, and links for the lisp directory were not put
-in.  This isn't much of a restriction: either make there be subdirectories
-(or symbolic links) of the directory of the emacs executable, or make the
-"installed" emacs executable be a symbolic link to an executable in a more
-appropriate directory structure.  For example, this setup works:
-/usr/local/xemacs/xemacs*           ; The executable.
-/usr/local/xemacs/lisp/             ; The associated directories.
-/usr/local/xemacs/etc/              ; Any of the files in this list
-/usr/local/xemacs/lock/             ; could be symbolic links as well.
-/usr/local/xemacs/info/
-As does this:
-/usr/local/bin/xemacs -> ../xemacs/src/xemacs-19.14 ; A link...
-/usr/local/xemacs/src/xemacs-19.14*                 ; The executable,
-/usr/local/xemacs/lisp/                             ; and the rest of
-/usr/local/xemacs/etc/                              ; the source tree
-/usr/local/xemacs/lock/
-/usr/local/xemacs/info/
-This configuration might be used for a multi-architecture installation; assume
-that $LOCAL refers to a directory which contains only files specific to a
-particular architecture (i.e., executables) and $SHARED refers to those files
-which are not machine specific (i.e., lisp code and documentation.)
-$LOCAL/bin/xemacs@ -> $LOCAL/xemacs-19.14/xemacs*
-$LOCAL/xemacs-19.14/lisp@ -> $SHARED/xemacs-19.14/lisp/
-$LOCAL/xemacs-19.14/etc@  -> $SHARED/xemacs-19.14/etc/
-$LOCAL/xemacs-19.14/info@ -> $SHARED/xemacs-19.14/info/
-The following would also work, but the above is probably more attractive:
-$LOCAL/bin/xemacs*
-$LOCAL/bin/lisp@ -> $SHARED/xemacs-19.14/lisp/
-$LOCAL/bin/etc@  -> $SHARED/xemacs-19.14/etc/
-$LOCAL/bin/info@ -> $SHARED/xemacs-19.14/info/
-If Emacs can't find the requisite directories, it writes a message like this
-(or some appropriate subset of it) to stderr:
-WARNING:
-couldn't find an obvious default for load-path, exec-directory, and
-lock-directory, and there were no defaults specified in paths.h when
-Emacs was built.  Perhaps some directories don't exist, or the Emacs
-executable, /cadillac-th/jwz/somewhere/xemacs is in a strange place?
-Without both exec-directory and load-path, Emacs will be very broken.
-Consider making a symbolic link from /cadillac-th/jwz/somewhere/etc
-to wherever the appropriate Emacs etc/ directory is, and from
-/cadillac-th/jwz/somewhere/lisp/ to wherever the appropriate Emacs
-lisp library is.
-Without lock-directory set, file locking won't work.  Consider
-creating /cadillac-th/jwz/somewhere/lock as a directory or symbolic
-link for use as the lock directory.
-The default installation tree is the following:
-/usr/local/bin/b2m                          ;
-ctags                        ; executables that
-emacsclient                  ; should be in
-etags                        ; user's path
-xemacs -> xemacs-<version>   ;
-xemacs                       ;
-/usr/local/lib/xemacs/site-lisp
-/usr/local/lib/xemacs/lock
-/usr/local/lib/xemacs-<version>/etc         ; architecture ind. files
-/usr/local/lib/xemacs-<version>/info
-/usr/local/lib/xemacs-<version>/lisp
-/usr/local/lib/xemacs-<version>/<configuration>  ; binaries emacs may run
-*** X Resources
----------------
-(Note: This section is copied verbatim from the XEmacs Reference Manual.)
-The Emacs resources are generally set per-frame. Each Emacs frame
-can have its own name or the same name as another, depending on the
-name passed to the `make-frame' function.
-You can specify resources for all frames with the syntax:
-Emacs*parameter: value
-or
-Emacs*EmacsFrame.parameter:value
-You can specify resources for a particular frame with the syntax:
-Emacs*FRAME-NAME.parameter: value
-**** Geometry Resources
------------------------
-To make the default size of all Emacs frames be 80 columns by 55
-lines, do this:
-Emacs*EmacsFrame.geometry: 80x55
-To set the geometry of a particular frame named `fred', do this:
-Emacs*fred.geometry: 80x55
-Important! Do not use the following syntax:
-Emacs*geometry: 80x55
-You should never use `*geometry' with any X application. It does not
-say "make the geometry of Emacs be 80 columns by 55 lines."  It really
-says, "make Emacs and all subwindows thereof be 80x55 in whatever units
-they care to measure in."  In particular, that is both telling the
-Emacs text pane to be 80x55 in characters, and telling the menubar pane
-to be 80x55 pixels, which is surely not what you want.
-As a special case, this geometry specification also works (and sets
-the default size of all Emacs frames to 80 columns by 55 lines):
-Emacs.geometry: 80x55
-since that is the syntax used with most other applications (since most
-other applications have only one top-level window, unlike Emacs).  In
-general, however, the top-level shell (the unmapped ApplicationShell
-widget named `Emacs' that is the parent of the shell widgets that
-actually manage the individual frames) does not have any interesting
-resources on it, and you should set the resources on the frames instead.
-The `-geometry' command-line argument sets only the geometry of the
-initial frame created by Emacs.
-A more complete explanation of geometry-handling is
-* The `-geometry' command-line option sets the `Emacs.geometry'
-resource, that is, the geometry of the ApplicationShell.
-* For the first frame created, the size of the frame is taken from
-the ApplicationShell if it is specified, otherwise from the
-geometry of the frame.
-* For subsequent frames, the order is reversed: First the frame, and
-then the ApplicationShell.
-* For the first frame created, the position of the frame is taken
-from the ApplicationShell (`Emacs.geometry') if it is specified,
-otherwise from the geometry of the frame.
-* For subsequent frames, the position is taken only from the frame,
-and never from the ApplicationShell.
-This is rather complicated, but it does seem to provide the most
-intuitive behavior with respect to the default sizes and positions of
-frames created in various ways.
-**** Iconic Resources
----------------------
-Analogous to `-geometry', the `-iconic' command-line option sets the
-iconic flag of the ApplicationShell (`Emacs.iconic') and always applies
-to the first frame created regardless of its name.  However, it is
-possible to set the iconic flag on particular frames (by name) by using
-the `Emacs*FRAME-NAME.iconic' resource.
-**** Resource List
-------------------
-Emacs frames accept the following resources:
-`geometry' (class `Geometry'): string
-Initial geometry for the frame.  *Note Geometry Resources:: for a
-complete discussion of how this works.
-`iconic' (class `Iconic'): boolean
-Whether this frame should appear in the iconified state.
-`internalBorderWidth' (class `InternalBorderWidth'): int
-How many blank pixels to leave between the text and the edge of the
-window.
-`interline' (class `Interline'): int
-How many pixels to leave between each line (may not be
-implemented).
-`menubar' (class `Menubar'): boolean
-Whether newly-created frames should initially have a menubar.  Set
-to true by default.
-`initiallyUnmapped' (class `InitiallyUnmapped'): boolean
-Whether XEmacs should leave the initial frame unmapped when it
-starts up.  This is useful if you are starting XEmacs as a server
-(e.g. in conjunction with gnuserv or the external client widget).
-You can also control this with the `-unmapped' command-line option.
-`barCursor' (class `BarColor'): boolean
-Whether the cursor should be displayed as a bar, or the
-traditional box.
-`textPointer' (class `Cursor'): cursor-name
-The cursor to use when the mouse is over text.  This resource is
-used to initialize the variable `x-pointer-shape'.
-`selectionPointer' (class `Cursor'): cursor-name
-The cursor to use when the mouse is over a selectable text region
-(an extent with the `highlight' property; for example, an Info
-cross-reference).  This resource is used to initialize the variable
-`x-selection-pointer-shape'.
-`spacePointer' (class `Cursor'): cursor-name
-The cursor to use when the mouse is over a blank space in a buffer
-(that is, after the end of a line or after the end-of-file).  This
-resource is used to initialize the variable
-`x-nontext-pointer-shape'.
-`modeLinePointer' (class `Cursor'): cursor-name
-The cursor to use when the mouse is over a mode line.  This
-resource is used to initialize the variable `x-mode-pointer-shape'.
-`gcPointer' (class `Cursor'): cursor-name
-The cursor to display when a garbage-collection is in progress.
-This resource is used to initialize the variable
-`x-gc-pointer-shape'.
-`scrollbarPointer' (class `Cursor'): cursor-name
-The cursor to use when the mouse is over the scrollbar.  This
-resource is used to initialize the variable
-`x-scrollbar-pointer-shape'.
-`pointerColor' (class `Foreground'): color-name
-`pointerBackground' (class `Background'): color-name
-The foreground and background colors of the mouse cursor.  These
-resources are used to initialize the variables
-`x-pointer-foreground-color' and `x-pointer-background-color'.
-`scrollBarWidth' (class `ScrollBarWidth'): integer
-How wide the vertical scrollbars should be, in pixels; 0 means no
-vertical scrollbars.  You can also use a resource specification of
-the form `*scrollbar.width', or the usual toolkit scrollbar
-resources: `*XmScrollBar.width' (Motif), `*XlwScrollBar.width'
-(Lucid), or `*Scrollbar.thickness' (Athena).  We don't recommend
-that you use the toolkit resources, though, because they're
-dependent on how exactly your particular build of XEmacs was
-configured.
-`scrollBarHeight' (class `ScrollBarHeight'): integer
-How high the horizontal scrollbars should be, in pixels; 0 means no
-horizontal scrollbars.  You can also use a resource specification
-of the form `*scrollbar.height', or the usual toolkit scrollbar
-resources: `*XmScrollBar.height' (Motif), `*XlwScrollBar.height'
-(Lucid), or `*Scrollbar.thickness' (Athena).  We don't recommend
-that you use the toolkit resources, though, because they're
-dependent on how exactly your particular build of XEmacs was
-configured.
-`scrollBarPlacement' (class `ScrollBarPlacement'): string
-Where the horizontal and vertical scrollbars should be positioned.
-This should be one of the four strings `bottom-left',
-`bottom-right', `top-left', and `top-right'.  Default is
-`bottom-right' for the Motif and Lucid scrollbars and
-`bottom-left' for the Athena scrollbars.
-`topToolBarHeight' (class `TopToolBarHeight'): integer
-`bottomToolBarHeight' (class `BottomToolBarHeight'): integer
-`leftToolBarWidth' (class `LeftToolBarWidth'): integer
-`rightToolBarWidth' (class `RightToolBarWidth'): integer
-Height and width of the four possible toolbars.
-`topToolBarShadowColor' (class `TopToolBarShadowColor'): color-name
-`bottomToolBarShadowColor' (class `BottomToolBarShadowColor'): color-name
-Color of the top and bottom shadows for the toolbars.  NOTE: These
-resources do *not* have anything to do with the top and bottom
-toolbars (i.e. the toolbars at the top and bottom of the frame)!
-Rather, they affect the top and bottom shadows around the edges of
-all four kinds of toolbars.
-`topToolBarShadowPixmap' (class `TopToolBarShadowPixmap'): pixmap-name
-`bottomToolBarShadowPixmap' (class `BottomToolBarShadowPixmap'): pixmap-name
-Pixmap of the top and bottom shadows for the toolbars.  If set,
-these resources override the corresponding color resources. NOTE:
-These resources do *not* have anything to do with the top and
-bottom toolbars (i.e. the toolbars at the top and bottom of the
-frame)!  Rather, they affect the top and bottom shadows around the
-edges of all four kinds of toolbars.
-`toolBarShadowThickness' (class `ToolBarShadowThickness'): integer
-Thickness of the shadows around the toolbars, in pixels.
-`visualBell' (class `VisualBell'): boolean
-Whether XEmacs should flash the screen rather than making an
-audible beep.
-`bellVolume' (class `BellVolume'): integer
-Volume of the audible beep.
-`useBackingStore' (class `UseBackingStore'): boolean
-Whether XEmacs should set the backing-store attribute of the X
-windows it creates.  This increases the memory usage of the X
-server but decreases the amount of X traffic necessary to update
-the screen, and is useful when the connection to the X server goes
-over a low-bandwidth line such as a modem connection.
-**** Face Resources
--------------------
-The attributes of faces are also per-frame. They can be specified as:
-Emacs.FACE_NAME.parameter: value
-(*do not* use `Emacs*FACE_NAME...')
-or
-Emacs*FRAME_NAME.FACE_NAME.parameter: value
-Faces accept the following resources:
-`attributeFont' (class `AttributeFont'): font-name
-The font of this face.
-`attributeForeground' (class `AttributeForeground'): color-name
-`attributeBackground' (class `AttributeBackground'): color-name
-The foreground and background colors of this face.
-`attributeBackgroundPixmap' (class `AttributeBackgroundPixmap'): file-name
-The name of an XBM file (or XPM file, if your version of Emacs
-supports XPM), to use as a background stipple.
-`attributeUnderline' (class `AttributeUnderline'): boolean
-Whether text in this face should be underlined.
-All text is displayed in some face, defaulting to the face named
-`default'.  To set the font of normal text, use
-`Emacs*default.attributeFont'. To set it in the frame named `fred', use
-`Emacs*fred.default.attributeFont'.
-These are the names of the predefined faces:
-`default'
-Everything inherits from this.
-`bold'
-If this is not specified in the resource database, Emacs tries to
-find a bold version of the font of the default face.
-`italic'
-If this is not specified in the resource database, Emacs tries to
-find an italic version of the font of the default face.
-`bold-italic'
-If this is not specified in the resource database, Emacs tries to
-find a bold-italic version of the font of the default face.
-`modeline'
-This is the face that the modeline is displayed in.  If not
-specified in the resource database, it is determined from the
-default face by reversing the foreground and background colors.
-`highlight'
-This is the face that highlighted extents (for example, Info
-cross-references and possible completions, when the mouse passes
-over them) are displayed in.
-`left-margin'
-`right-margin'
-These are the faces that the left and right annotation margins are
-displayed in.
-`zmacs-region'
-This is the face that mouse selections are displayed in.
-`text-cursor'
-This is the face that the cursor is displayed in.
-`isearch'
-This is the face that the matched text being searched for is
-displayed in.
-`info-node'
-This is the face of info menu items.  If unspecified, it is copied
-from `bold-italic'.
-`info-xref'
-This is the face of info cross-references.  If unspecified, it is
-copied from `bold'. (Note that, when the mouse passes over a
-cross-reference, the cross-reference's face is determined from a
-combination of the `info-xref' and `highlight' faces.)
-Other packages might define their own faces; to see a list of all
-faces, use any of the interactive face-manipulation commands such as
-`set-face-font' and type `?' when you are prompted for the name of a
-face.
-If the `bold', `italic', and `bold-italic' faces are not specified
-in the resource database, then XEmacs attempts to derive them from the
-font of the default face.  It can only succeed at this if you have
-specified the default font using the XLFD (X Logical Font Description)
-format, which looks like
-*-courier-medium-r-*-*-*-120-*-*-*-*-*-*
-If you use any of the other, less strict font name formats, some of
-which look like
-lucidasanstypewriter-12
-fixed
-9x13
-then XEmacs won't be able to guess the names of the bold and italic
-versions.  All X fonts can be referred to via XLFD-style names, so you
-should use those forms.  See the man pages for `X(1)', `xlsfonts(1)',
-and `xfontsel(1)'.
-**** Widgets
-------------
-There are several structural widgets between the terminal EmacsFrame
-widget and the top level ApplicationShell; the exact names and types of
-these widgets change from release to release (for example, they changed
-in 19.9, 19.10, 19.12, and 19.13) and are subject to further change in
-the future, so you should avoid mentioning them in your resource database.
-The above-mentioned syntaxes should be forward-compatible.  As of 19.14,
-the exact widget hierarchy is as follows:
-INVOCATION-NAME           "shell"              "container"     FRAME-NAME
-x-emacs-application-class "TopLevelEmacsShell" "EmacsManager" "EmacsFrame"
-(for normal frames)
-or
-INVOCATION-NAME           "shell"               "container"     FRAME-NAME
-x-emacs-application-class "TransientEmacsShell" "EmacsManager" "EmacsFrame"
-(for popup/dialog-box frames)
-where INVOCATION-NAME is the terminal component of the name of the
-XEmacs executable (usually `xemacs'), and `x-emacs-application-class'
-is generally `Emacs'.
-**** Menubar Resources
-----------------------
-As the menubar is implemented as a widget which is not a part of
-XEmacs proper, it does not use the face mechanism for specifying fonts
-and colors: It uses whatever resources are appropriate to the type of
-widget which is used to implement it.
-If Emacs was compiled to use only the Motif-lookalike menu widgets,
-then one way to specify the font of the menubar would be
-Emacs*menubar*font: *-courier-medium-r-*-*-*-120-*-*-*-*-*-*
-If the Motif library is being used, then one would have to use
-Emacs*menubar*fontList: *-courier-medium-r-*-*-*-120-*-*-*-*-*-*
-because the Motif library uses the `fontList' resource name instead
-of `font', which has subtly different semantics.
-The same is true of the scrollbars: They accept whichever resources
-are appropriate for the toolkit in use.
-*** Source Code Highlighting
-----------------------------
-It's possible to have your buffers "decorated" with fonts or colors
-indicating syntactic structures (such as strings, comments, function names,
-"reserved words", etc.).  In XEmacs, the preferred way to do this is with
-font-lock-mode; activate it by adding the following code to your .emacs file:
-(add-hook 'emacs-lisp-mode-hook 'turn-on-font-lock)
-(add-hook 'c-mode-hook          'turn-on-font-lock)
-(add-hook 'c++-mode-hook        'turn-on-font-lock)
-(add-hook 'dired-mode-hook      'turn-on-font-lock)
-...etc...
-To customize it, see the descriptions of the function `font-lock-mode' and
-the variables `font-lock-keywords', `c-font-lock-keywords', etc.
-There exist several other source code highlighting packages, but font-lock
-does one thing that most others don't do: highlights as you type new text;
-and one thing that no others do: bases part of its decoration on the
-syntax table of the major mode.  Font-lock has C-level support to do this
-efficiently, so it should also be significantly faster than the others.
-If there's something that another highlighting package does that you can't
-make font-lock do, let us know.  We would prefer to consolidate all of the
-desired functionality into one package rather than ship several different
-packages which do essentially the same thing in different ways.
-** Differences Between XEmacs and Emacs 18
-==========================================
-Auto-configure support has been added, so it should be fairly easy to compile
-XEmacs on different systems.  If you have any problems or feedback about
-compiling on your system, please let us know.
-We have reimplemented the basic input model in a more general way; instead of
-X input being a special-case of the normal ASCII input stream, XEmacs has a
-concept of "input events", and ASCII characters are a subset of that.  The
-events that XEmacs knows about are not X events, but are a generalization of
-them, so that XEmacs can eventually be ported to different window systems.
-We have reimplemented keymaps so that sequences of events can be stored into
-them instead of just ASCII codes; it is possible to, for example, bind
-different commands to each of the chords Control-h, Control-H, Backspace,
-Control-Backspace, and Super-Shift-Backspace.  Key bindings, function key
-bindings, and mouse bindings live in the same keymaps.
-Input and display of all ISO-8859-1 characters is supported.
-You can have multiple X windows ("frames" in XEmacs terminology).
-XEmacs has objects called "extents" and "faces", which are roughly
-analogous to Epoch's "buttons," "zones," and "styles."  An extent is a
-region of text (a start position and an end position) and a face is a
-collection of textual attributes like fonts and colors.  Every extent
-is displayed in some "face", so changing the properties of a face
-immediately updates the display of all associated extents.  Faces can
-be frame-local: you can have a region of text which displays with
-completely different attributes when its buffer is viewed from a
-different X window.
-The display attributes of faces may be specified either in lisp or through
-the X resource manager.
-Pixmaps of arbitrary size can be embedded in a buffer.
-Variable width fonts work.
-The height of a line is the height of the tallest font on that line, instead
-of all lines having the same height.
-XEmacs uses the MIT "Xt" toolkit instead of raw Xlib calls, which
-makes it be a more well-behaved X citizen (and also improves
-portability).  A result of this is that it is possible to include
-other Xt "Widgets" in the XEmacs window.  Also, XEmacs understands the
-standard Xt command-line arguments.
-XEmacs understands the X11 "Selection" mechanism; it's possible to define
-and customize selection converter functions and new selection types from
-Emacs Lisp, without having to recompile XEmacs.
-XEmacs provides support for ToolTalk on systems that have it.
-XEmacs supports the Zmacs/Lispm style of region highlighting, where the
-region between the point and mark is highlighted when in its "active" state.
-XEmacs has a menubar, whose contents are customizable from emacs-lisp.
-This menubar looks Motif-ish, but does not require Motif.  If you already
-own Motif, however, you can configure XEmacs to use a *real* Motif menubar
-instead.
-XEmacs can ask questions using popup dialog boxes.  Any command executed from
-a menu will ask yes/no questions with dialog boxes, while commands executed
-via the keyboard will use the minibuffer.
-XEmacs has vertical and horizontal scrollbars.
-The initial load-path is computed at run-time, instead of at compile-time.
-This means that if you move the XEmacs executable and associated directories
-to somewhere else, you don't have to recompile anything.
-You can specify what the title of the XEmacs windows and icons should be
-with the variables `frame-title-format' and `frame-icon-title-format',
-which have the same syntax as `mode-line-format'.
-XEmacs now supports floating-point numbers.
-XEmacs now knows about timers directly, instead of them being simulated by
-a subprocess.
-XEmacs understands truenames, and can be configured to notice when you are
-visiting two names of the same file.  See the variables find-file-use-truenames
-and find-file-compare-truenames.
-If you're running on a machine with audio hardware, you can specify sound
-files for XEmacs to play instead of the default X beep.  See the documentation
-of the function load-sound-file and the variable sound-alist.
-An XEmacs frame can be placed within an "external client widget" managed by
-another application.  This allows an application to use an XEmacs frame as its
-text pane rather than the standard Text widget that is provided with Motif or
-Athena.  XEmacs supports Motif applications, generic Xt (e.g. Athena)
-applications, and raw Xlib applications.
-Random changes to the emacs-lisp library: (some of this was not written by
-us, but is included because it's free software and we think it's good stuff)
-- there is a new optimizing byte-compiler
-- there is a new abbrev-based mail-alias mechanism
-- the -*- line can contain local-variable settings
-- there is a new TAGS package
-- there is a new VI-emulation mode (viper)
-- there is a new implementation of Dired
-- there is a new implementation of Isearch
-- the VM package for reading mail is provided
-- the W3 package for browsing the World Wide Web hypertext information
-system is provided
-- the Hyperbole package, a programmable information management and
-hypertext system
-- the OO-Browser package, a multi-language object-oriented browser
-There are many more specifics in the "Miscellaneous Changes" section, below.
-The online Emacs Manual and Emacs-Lisp Manual are now both relatively
-up-to-date.

Mercurial > hg > xemacs-beta

comparison etc/NEWS @ 371:cc15677e0335 r21-2b1