-** Nextstep (GNUstep / Mac OS X) port
-
-*** Support for fullscreen and the frame parameter fullscreen.
-
-*** A file dialog is used for open/save operations initiated from the
-menu/toolbar.
-
-\f
-* Editing Changes in Emacs 24.3
-
-** Search and Replace
-
-*** Non-regexp Isearch now performs "lax" space matching.
-Each sequence of spaces in the supplied search string may match any
-sequence of one or more whitespace characters, as specified by the
-variable `search-whitespace-regexp'. (This variable is also used by a
-similar existing feature for regexp Isearch.)
-
-*** New Isearch command `M-s SPC' toggles lax space matching.
-This applies to both ordinary and regexp Isearch.
-
-*** New option `replace-lax-whitespace'.
-If non-nil, `query-replace' uses flexible whitespace matching too.
-The default is nil.
-
-*** Global `M-s _' starts a symbol (identifier) incremental search,
-and `M-s _' in Isearch toggles symbol search mode.
-`M-s c' in Isearch toggles search case-sensitivity.
-
-** Navigation commands
-
-*** New binding `M-g c' for `goto-char'.
-
-*** New binding `M-g TAB' for `move-to-column'.
-
-*** `M-g TAB' (`move-to-column') prompts for a column number if called
-interactively with no prefix arg. Previously, it moved to column 1.
-
-** New option `yank-handled-properties' allows processing of text
-properties on yanked text, in ways that are more general than just
-removing them (as is done by `yank-excluded-properties').
-
-** New option `delete-trailing-lines' specifies whether
-M-x delete-trailing-whitespace should delete trailing lines at the end
-of the buffer. It defaults to t.
-
-** `C-u M-=' now counts lines/words/characters in the entire buffer.
-
-** `C-x 8 RET' is now bound to `insert-char', which is now a command.
-`ucs-insert' is now an obsolete alias for `insert-char'.
-
-** The `z' key no longer has a binding in most special modes.
-It used to be bound to `kill-this-buffer', but `z' is too easy to
-accidentally type.
-
-** New command `C-x r M-w' (`copy-rectangle-as-kill').
-It copies the region-rectangle as the last rectangle kill.
-
-** Registers
-
-*** `C-x r +' is now overloaded to invoke `append-to-register'.
-
-*** New option `register-separator' specifies the register containing
-the text to put between collected texts for use with
-M-x append-to-register and M-x prepend-to-register.
-
-\f
-* Changes in Specialized Modes and Packages in Emacs 24.3
-
-** Common Lisp emulation (CL)
-
-*** CL's main entry is now (require 'cl-lib).
-`cl-lib' is like the old `cl' except that it uses the namespace cleanly;
-i.e., all its definitions have the "cl-" prefix (and internal definitions
-use the "cl--" prefix).
-
-If `cl' provided a feature under the name `foo', then `cl-lib'
-provides it under the name `cl-foo' instead; with the exceptions of the
-few `cl' definitions that had to use `foo*' to avoid conflicts with
-pre-existing Elisp entities. These have been renamed to `cl-foo'
-rather than `cl-foo*'.
-
-The old `cl' is now deprecated and is mainly just a bunch of aliases that
-provide the old, non-prefixed names. Some exceptions are listed below:
-
-*** `cl-flet' is not like `flet' (which is deprecated).
-Instead it obeys the behavior of Common-Lisp's `flet'.
-In particular, in cl-flet function definitions are lexically scoped,
-whereas in flet the scoping is dynamic.
-
-*** `cl-labels' is slightly different from `labels'.
-The difference is that it relies on the `lexical-binding' machinery
-(as opposed to the `lexical-let' machinery used previously) to capture
-definitions in closures, so such closures will only work if `lexical-binding'
-is in use.
-
-*** `cl-letf' is not exactly like `letf'.
-The only difference is in details that relate to some deprecated usage
-of `symbol-function' in place forms.
-
-*** `progv' was rewritten to use the `let' machinery.
-A side effect is that variables without corresponding values are bound
-to nil rather than being made unbound.
-
-*** The following methods of extending `setf' are obsolete
-(use features from gv.el instead):
-`define-modify-macro' (use `gv-letplace')
-`defsetf' (use `gv-define-simple-setter' or `gv-define-setter')
-`define-setf-expander' (use `gv-define-setter' or `gv-define-expander')
-`get-setf-method' no longer exists (see "Incompatible Lisp Changes")
-
-** Diff mode
-
-*** Changes are now highlighted using the same color scheme as in
-modern VCSes. Deletions are displayed in red (new faces
-`diff-refine-removed' and `smerge-refined-removed', and new definition
-of `diff-removed'), insertions in green (new faces `diff-refine-added'
-and `smerge-refined-added', and new definition of `diff-added').
-
-*** The variable `diff-use-changed-face' defines whether to use the
-face `diff-changed', or `diff-removed' and `diff-added' to highlight
-changes in context diffs.
-
-*** The new command `diff-delete-trailing-whitespace' removes trailing
-whitespace introduced by a diff.
-
-** Ediff now uses the same color scheme as Diff mode.
-
-** Python mode
-
-A new version of python.el, which provides several new features, including:
-per-buffer shells, better indentation, Python 3 support, and improved
-shell-interaction compatible with iPython (and virtually any other
-text based shell).
-
-*** Some user options have been replaced/renamed, including (old -> new):
-**** python-indent -> python-indent-offset
-**** python-guess-indent -> python-indent-guess-indent-offset
-**** python-pdbtrack-do-tracking-p -> python-pdbtrack-activate
-**** python-use-skeletons -> python-skeleton-autoinsert
-
-*** Some user options have been removed, including:
-
-**** `python-indent-string-contents': Strings are never indented.
-
-**** `python-honour-comment-indentation':
-Comments are always considered as indentation markers.
-
-**** `python-continuation-offset': Indentation is automatically
-calculated in a pep8 compliant way depending on the context.
-
-**** `python-shell-prompt-alist', `python-shell-continuation-prompt-alist':
-Have no direct mapping as the shell interaction is completely different.
-
-**** `python-python-command', `python-jython-command':
-Replaced by `python-shell-interpreter'.
-
-**** `inferior-python-filter-regexp', `python-remove-cwd-from-path',
-`python-pdbtrack-minor-mode-string', `python-source-modes':
-No longer relevant.
-
-*** Some commands have been replaced (old -> new):
-**** python-insert-class -> python-skeleton-class
-**** python-insert-def -> python-skeleton-def
-**** python-insert-for -> python-skeleton-for
-**** python-insert-if -> python-skeleton-if
-**** python-insert-try/except -> python-skeleton-try
-**** python-insert-try/finally -> python-skeleton-try
-**** python-insert-while -> python-skeleton-while
-**** python-find-function -> python-nav-jump-to-defun
-**** python-next-statement -> python-nav-forward-sentence
-**** python-previous-statement -> python-nav-backward-sentence
-**** python-beginning-of-defun-function -> python-nav-beginning-of-defun
-**** python-end-of-defun-function -> python-nav-end-of-defun
-**** python-send-buffer -> python-shell-send-buffer
-**** python-send-defun -> python-shell-send-defun
-**** python-send-region -> python-shell-send-region
-**** python-send-region-and-go -> emulate with python-shell-send-region
-and python-shell-switch-to-shell
-**** python-send-string -> python-shell-send-string
-**** python-switch-to-python -> python-shell-switch-to-shell
-**** python-describe-symbol -> python-eldoc-at-point
-
-** D-Bus
-
-*** New variables `dbus-compiled-version' and `dbus-runtime-version'.
-
-*** The D-Bus object manager interface is implemented.
-
-*** Variables of type :(u)int32 and :(u)int64 accept floating points,
-if their value does not fit into Emacs's integer range.
-
-*** The function `dbus-call-method' is now non-blocking.
-It can be interrupted by `C-g'. `dbus-call-method-non-blocking' is obsolete.
-
-*** Signals can also be sent as unicast messages.
-
-*** The argument list of `dbus-register-signal' has been extended,
-according to the new match rule types of D-Bus.
-
-*** `dbus-init-bus' supports private connections.
-
-*** There is a new function `dbus-setenv'.
-
-** `desktop-path' no longer includes the "." directory.
-Desktop files are now located in ~/.emacs.d by default.
-
-** Dired
-
-*** `dired-do-async-shell-command' executes each file sequentially
-if the command ends in `;' (when operating on multiple files).
-Otherwise, it executes the command on each file in parallel.
-
-*** Typing `M-n' in the minibuffer of `dired-do-chmod', `dired-do-chgrp',
-`dired-do-chown', and `dired-do-touch' yanks the attributes of the
-file at point.
-
-*** When the region is active, `m' (`dired-mark'), `u' (`dired-unmark'),
-`DEL' (`dired-unmark-backward'), and `d' (`dired-flag-file-deletion')
-mark/unmark/flag all files in the active region.
-
-*** The minibuffer default for `=' (`dired-diff') has changed.
-It is now the backup file for the file at point, if one exists.
-In Transient Mark mode the default is the file at the active mark.
-
-*** `M-=' is no longer bound to `dired-backup-diff' in Dired buffers.
-The global binding for `M-=', `count-words-region' is in effect.
-
-** ERC
-
-*** New module "notifications", which can send a notification when you
-receive a private message or your nickname is mentioned.
-
-*** ERC will look up server/channel names via auth-source and use any
-channel keys found.
-
-*** New option `erc-lurker-hide-list', similar to `erc-hide-list', but
-only applies to messages sent by lurkers.
-
-** reStructuredText mode
-
-*** Keybindings (see `C-c C-h'), TAB indentation, filling and auto-filling,
-fontification, comment handling, and customization have all been revised
-and improved.
-
-*** Support for `imenu' and `which-function-mode'.
-
-*** The reStructuredText syntax is more closely covered.
-Sphinx support has been improved.
-
-*** `rst-insert-list' inserts new list or continues existing lists.
-
-*** A negative prefix argument always works for `rst-adjust'.
-
-*** The window configuration is reset after displaying a TOC.
-
-*** The constant `rst-version' describes the rst.el package version.
-
-** Ruby mode
-
-*** Support for percent literals and recognition of regular expressions
-in method calls without parentheses with more methods, including Cucumber
-steps definitions.
-
-*** Improved syntax highlighting and indentation.
-
-*** New command `ruby-toggle-block', bound to `C-c {'.
-
-*** Some non-standard keybindings/commands have been removed:
-
-**** `ruby-electric-brace'; use `electric-indent-mode' instead.
-
-**** `ruby-mark-defun'; use `mark-defun'.
-
-**** `ruby-beginning-of-defun' and `ruby-end-of-defun' are replaced by
-appropriate settings for the variables `beginning-of-defun-function'
-and `end-of-defun-function'.
-
-**** Non-standard keybindings for `backward-kill-word', `comment-region',
-`reindent-then-newline-and-indent' and `newline' have been removed.
-
-** Shell Script mode
-
-*** Pairing of parens/quotes uses `electric-pair-mode' instead of skeleton-pair.
-
-*** `sh-electric-here-document-mode' now controls auto-insertion of here-docs.
-
-*** `sh-use-smie' lets you choose a new indentation and navigation code.
-
-** VHDL mode
-
-*** The free software compiler GHDL is supported (and now the default).
-
-*** Support for the VHDL-AMS packages has been added/updated.
-
-*** Updated to the 2002 revision of the VHDL standard.
-
-*** Accepts \r and \f as whitespace.
-
-** Apropos
-
-*** The faces used by Apropos are now directly customizable.
-These faces are named `apropos-symbol', `apropos-keybinding', and so on;
-see the `apropos' Custom group for details.
-
-*** The old options whose values specified faces to use have been removed
-(i.e. `apropos-symbol-face', `apropos-keybinding-face', `apropos-label-face',
-`apropos-match-face' and `apropos-property-face'.).
-
-** Buffer Menu
-
-*** This package has been rewritten to use Tabulated List mode.
-
-*** Option `Buffer-menu-buffer+size-width' is now obsolete.
-Use `Buffer-menu-name-width' and `Buffer-menu-size-width' instead.
-
-** Calc
-
-*** Algebraic simplification mode is now the default.
-To restrict to the limited simplifications given by the former
-default simplification mode, use `m I'.
-
-** Calendar
-
-*** You can customize the header text that appears above each calendar month.
-See the variable `calendar-month-header'.
-
-*** New LaTeX calendar style, produced by `cal-tex-cursor-week2-summary'.
-
-*** The calendars produced by cal-html include holidays.
-Customize `cal-html-holidays' to change this.
-
-** CEDET
-
-*** The major modes from the parser generators "Bovine" and "Wisent"
-are now properly integrated in Emacs. The file suffixes ".by" and ".wy"
-are in `auto-mode-alist', and the corresponding manuals are included.
-
-*** EDE
-
-**** Menu support for the "Configuration" feature. This allows users to
-choose the active configuration (such as debug or install) from the menu.
-
-**** New command `ede-set' to interactively set project-local variables.
-
-**** Support for compiling, debugging, and running in "generic" projects.
-
-**** Autoconf editing support for M4 macros with complex arguments.
-
-**** Compilation support for the "linux" project type.
-
-**** "simple" projects have been removed; use "generic" projects instead.
-
-*** Semantic
-
-**** Support for parsing #include statements inside a namespace in C/C++.
-
-**** Improved support for 'extern "C"' declarations in C/C++.
-
-**** The ability to ignore more common special C/C++ preprocessor symbols,
-such as '__nonnull' and '__asm'. Add '__cplusplus' macro when parsing C++.
-If available, include cdefs.h as an additional source of preprocessor symbols.
-
-**** Improved C/C++ function pointer parsing.
-
-**** In Python, support for converting imports to include file names.
-
-**** Ability to dynamically determine the Python load path.
-
-**** Support for the Python 'WITH' and 'AT' keywords.
-
-**** Improved tooltip completion.
-
-*** SRecode
-
-**** The SRecode manual is now included.
-
-**** Tag generation supports constructor/destructor settings and system
-include differentiation.
-
-**** Addition of 'Framework' support: Frameworks are specified when a
-particular kind of library (such as Android) is needed in a common language
-mode (like Java).
-
-**** Support for nested templates and let variables override based on priority.
-
-**** Support for merging tables from multiple related modes, such as
-default -> c++ -> arduino.
-
-** Compile has a new option `compilation-always-kill'.
-
-** Customize
-
-*** `custom-reset-button-menu' now defaults to t.
-
-*** Non-option variables are never matched in `customize-apropos' and
-`customize-apropos-options' (i.e., the prefix argument does nothing for
-these commands now).
-
-** Term
-
-*** The variables `term-default-fg-color' and `term-default-bg-color'
-are now deprecated in favor of the customizable face `term'.
-
-*** You can customize how to display ANSI terminal colors and styles
-by customizing the corresponding `term-color-<COLOR>',
-`term-color-underline' and `term-color-bold' faces.
-
-** Tramp
-
-*** The syntax has been extended in order to allow ad-hoc proxy definitions.
-
-*** Remote processes are now also supported on remote MS-Windows hosts.
-
-** URL
-
-*** Structs made by `url-generic-parse-url' have nil `attributes' slot.
-Previously, this slot stored semicolon-separated attribute-value pairs
-appended to some imap URLs, but this is not compatible with RFC 3986.
-So now the `filename' slot stores the entire path and query components,
-and the `attributes' slot is always nil.
-
-*** New function `url-encode-url' for encoding a URI string.
-The `url-retrieve' function now uses this to encode its URL argument,
-in case that is not properly encoded.
-
-** notifications.el supports now version 1.2 of the Notifications API.
-The function `notifications-get-capabilities' returns the supported
-server properties.
-
-** Flymake uses fringe bitmaps to indicate errors and warnings.
-See `flymake-fringe-indicator-position', `flymake-error-bitmap' and
-`flymake-warning-bitmap'.
-
-** The FFAP option `ffap-url-unwrap-remote' can now be a list of strings,
-specifying URL types that should be converted to remote file names at
-the FFAP prompt. The default is now '("ftp").
-
-** New Ibuffer `derived-mode' filter, bound to `/ M'.
-The old binding for `/ M' (filter by used-mode) is now bound to `/ m'.
-
-** New option `mouse-avoidance-banish-position' specifies where the
-`banish' mouse avoidance setting moves the mouse.
-
-** In Perl mode, new option `perl-indent-parens-as-block' causes non-block
-closing brackets to be aligned with the line of the opening bracket.
-
-** In Proced mode, new command `proced-renice' renices marked processes.
-
-** New option `async-shell-command-buffer' specifies the buffer to use
-for a new asynchronous `shell-command' when the default output buffer
-`*Async Shell Command*' is already in use.
-
-** SQL mode has a new option `sql-db2-escape-newlines'.
-If non-nil, newlines sent to the command interpreter will be escaped
-by a backslash. The default does not escape the newlines and assumes
-that the sql statement will be terminated by a semicolon.
-
-** New command `tabulated-list-sort', bound to `S' in Tabulated List mode
-(and modes that derive from it), sorts the column at point, or the Nth
-column if a numeric prefix argument is given.
-
-** `which-func-modes' now defaults to t, so Which Function mode, when
-enabled, applies to all applicable major modes.
-
-** `winner-mode-hook' now runs when the mode is disabled, as well as when
-it is enabled.
-
-** Follow mode no longer works by using advice.
-The option `follow-intercept-processes' has been removed.
-
-** `javascript-generic-mode' is now an obsolete alias for `js-mode'.
-
-** Hooks renamed to avoid obsolete "-hooks" suffix:
-*** semantic-lex-reset-hooks -> semantic-lex-reset-functions
-*** semantic-change-hooks -> semantic-change-functions
-*** semantic-edits-new-change-hooks -> semantic-edits-new-change-functions
-*** semantic-edits-delete-change-hooks -> semantic-edits-delete-change-functions
-*** semantic-edits-reparse-change-hooks -> semantic-edits-reparse-change-functions
-*** semanticdb-save-database-hooks -> semanticdb-save-database-functions
-*** c-prepare-bug-report-hooks -> c-prepare-bug-report-hook
-*** rcirc-sentinel-hooks -> rcirc-sentinel-functions
-*** rcirc-receive-message-hooks -> rcirc-receive-message-functions
-*** rcirc-activity-hooks -> rcirc-activity-functions
-*** rcirc-print-hooks -> rcirc-print-functions
-*** dbus-event-error-hooks -> dbus-event-error-functions
-*** eieio-pre-method-execution-hooks -> eieio-pre-method-execution-functions
-*** checkdoc-style-hooks -> checkdoc-style-functions
-*** checkdoc-comment-style-hooks -> checkdoc-comment-style-functions
-*** archive-extract-hooks -> archive-extract-hook
-*** filesets-cache-fill-content-hooks -> filesets-cache-fill-content-hook
-*** hfy-post-html-hooks -> hfy-post-html-hook
-*** nndiary-request-create-group-hooks -> nndiary-request-create-group-functions
-*** nndiary-request-update-info-hooks -> nndiary-request-update-info-functions
-*** nndiary-request-accept-article-hooks -> nndiary-request-accept-article-functions
-*** gnus-subscribe-newsgroup-hooks -> gnus-subscribe-newsgroup-functions
-
-** Obsolete packages
-
-*** assoc.el
-In most cases, assoc+member+push+delq work just as well.
-And in any case it's just a terrible package: ugly semantics, terrible
-inefficiency, and not namespace-clean.
-*** bruce.el
-*** cust-print.el
-*** ledit.el
-*** mailpost.el
-*** mouse-sel.el
-*** patcomp.el
-
-\f
-* Incompatible Lisp Changes in Emacs 24.3
-
-** Docstrings starting with `*' no longer indicate user options.
-Only variables defined using `defcustom' are considered user options.
-The function `user-variable-p' is now an obsolete alias for
-`custom-variable-p'.
-
-** The return values of `defalias', `defun' and `defmacro' have changed,
-and are now undefined. For backwards compatibility, `defun' and
-`defmacro' currently return the name of the newly defined
-function/macro, but this should not be relied upon.
-
-** `random' by default now returns a different random sequence in
-every Emacs run. Use `(random S)', where S is a string, to set the
-random seed to a value based on S, in order to get a repeatable
-sequence in later calls.
-
-** If the NEWTEXT arg to `replace-match' contains a substring "\?",
-that substring is inserted literally even if the LITERAL arg is
-non-nil, instead of causing an error to be signaled.
-
-** `select-window' now always makes the window's buffer current.
-It does so even if the window was selected before.
-
-** The function `x-select-font' can return a font spec, instead of a
-font name as a string. Whether it returns a font spec or a font name
-depends on the graphical library.
-
-** `face-spec-set' no longer sets frame-specific attributes when the
-third argument is a frame (that usage was obsolete since Emacs 22.2).
-
-** `set-buffer-multibyte' now signals an error in narrowed buffers.
-
-** The CL package's `get-setf-method' function no longer exists.
-Generalized variables are now part of core Emacs Lisp, and implemented
-differently to the way cl.el used to do it. It is not possible to
-define a compatible replacement for `get-setf-method'. See the file
-gv.el for internal details of the new implementation.
-
-** The arguments of `dbus-register-signal' are no longer just strings,
-but keywords or keyword-string pairs. The old argument list will
-still be supported for Emacs 24.x.
-
-** Miscellaneous name changes
-Some Lisp symbols have been renamed to correct their spelling,
-or to be more consistent with standard Emacs terminology.
-
-*** Renamed functions
-**** hangul-input-method-inactivate -> hangul-input-method-deactivate
-**** inactivate-input-method -> deactivate-input-method
-**** quail-inactivate -> quail-deactivate
-**** robin-inactivate -> robin-deactivate
-**** viper-inactivate-input-method -> viper-deactivate-input-method
-**** viper-inactivate-input-method-action ->
- viper-deactivate-input-method-action
-**** ucs-input-inactivate -> ucs-input-deactivate
-
-*** Renamed hooks
-The old hooks are still supported for backward compatibility, but they
-are deprecated and will be removed eventually.
-**** input-method-inactivate-hook -> input-method-deactivate-hook
-**** robin-inactivate-hook -> robin-deactivate-hook
-**** quail-inactivate-hook -> quail-deactivate-hook
-
-*** Renamed variables
-**** follow-deactive-menu -> follow-inactive-menu
-**** inactivate-current-input-method-function ->
- deactivate-current-input-method-function
-
-** Some obsolete functions, variables, and faces have been removed:
-*** `last-input-char', `last-command-char', `unread-command-char'
-*** `facemenu-unlisted-faces'
-*** `rmail-decode-mime-charset'
-*** `iswitchb-read-buffer'
-*** `sc-version', `sc-submit-bug-report'
-*** `set-char-table-default'
-*** `string-to-sequence' (use `string-to-list' or `string-to-vector')
-*** `compile-internal'
-*** `modeline'
-*** `mode-line-inverse-video'
-*** `follow-mode-off-hook'
-*** `cvs-commit-buffer-require-final-newline'
-(use `log-edit-require-final-newline' instead)
-*** `cvs-changelog-full-paragraphs'
-(use `log-edit-changelog-full-paragraphs' instead)
-*** `cvs-diff-ignore-marks', `cvs-diff-buffer-name'
-*** `vc-ignore-vc-files' (use `vc-handled-backends' instead)
-*** `vc-master-templates' (use `vc-handled-backends' instead)
-*** `vc-checkout-carefully'
-
-\f
-* Lisp Changes in Emacs 24.3
-
-** CL-style generalized variables are now in core Elisp.
-`setf' is autoloaded; `push' and `pop' accept generalized variables.
-You can define your own generalized variables using `gv-define-simple-setter',
-`gv-define-setter', etc.
-
-** Emacs tries to macroexpand interpreted (non-compiled) files during load.
-This can significantly speed up execution of non-byte-compiled code,
-but can also bump into previously unnoticed cyclic dependencies.
-These are generally harmless: they will simply cause the macro calls
-to be left for later expansion (as before), but will result in a
-warning ("Eager macro-expansion skipped due to cycle") describing the cycle.
-You may wish to restructure your code so this does not happen.
-
-** New sampling-based Elisp profiler.
-Try M-x profiler-start, do some work, and then call M-x profiler-report.
-When finished, use M-x profiler-stop. The sampling rate can be based on
-CPU time or memory allocations.
-
-** `defun' also accepts a (declare DECLS) form, like `defmacro'.
-The interpretation of the DECLS is determined by `defun-declarations-alist'.
-
-** New macros `setq-local' and `defvar-local'.
-
-** Face underlining can now use a wave.
-
-** `read-regexp' has a new argument HISTORY; the first argument PROMPT
-of `read-regexp' accepts a string ending with a colon and space, and its
-second argument DEFAULTS can be a list of strings accessible via `M-n'
-in the minibuffer ahead of other hard-coded useful regexp-related values.
-More commands use `read-regexp' now to read their regexp arguments.
-
-** Completion
-
-*** New function `completion-table-with-quoting' to handle completion
-in the presence of quoting, such as file completion in shell buffers.
-
-*** New function `completion-table-subvert' to use an existing completion
-table, but with a different prefix.
-
-** Debugger
-
-*** New error type and new function `user-error'.
-These do not trigger the debugger.
-
-*** New option `debugger-bury-or-kill', saying what to do with the
-debugger buffer when exiting debug.
-
-*** Set `debug-on-message' to enter the debugger when a certain
-message is displayed in the echo area. This can be useful when trying
-to work out which code is doing something.
-
-*** New var `inhibit-debugger', automatically set to prevent accidental
-recursive invocations.
-
-** Window handling
-
-*** New command `fit-frame-to-buffer' adjusts the frame height to
-fit the contents.
-
-*** The command `fit-window-to-buffer' can adjust the frame height
-if the new option `fit-frame-to-buffer' is non-nil.
-
-*** New macro `with-temp-buffer-window', similar to
-`with-output-to-temp-buffer'.
-
-*** `temp-buffer-resize-mode' no longer resizes windows that have been
-reused.
-
-*** New option `switch-to-buffer-preserve-window-point' to restore a
-window's point when switching buffers.
-
-*** New display action alist entries `window-height' and `window-width'
-specify the size of new windows created by `display-buffer'.
-
-*** New display action alist entry `pop-up-frame-parameters', if
-non-nil, specifies frame parameters to give any newly-created frame.
-
-*** New display action alist entry `inhibit-switch-frame', if non-nil,
-tells display action functions to avoid changing which frame is
-selected.
-
-*** New display action alist entry `previous-window', if non-nil,
-specifies window to reuse in `display-buffer-in-previous-window'.
-
-*** New display action functions `display-buffer-below-selected',
-and `display-buffer-in-previous-window'.
-
-*** The functions `get-lru-window', `get-mru-window' and `get-largest-window'
-now accept a third argument to avoid choosing the selected window.
-
-*** Additional values recognized for option `window-combination-limit'.
-
-*** The following variables are obsolete, as they can be replaced by
-appropriate entries in the `display-buffer-alist' function introduced
-in Emacs 24.1:
-**** `dired-shrink-to-fit'
-**** `display-buffer-reuse-frames'
-**** `display-buffer-function'
-**** `special-display-buffer-names'
-**** `special-display-frame-alist'
-**** `special-display-function'
-**** `special-display-regexps'
-
-** Time
-
-*** `current-time-string' no longer requires that its argument's year
-must be in the range 1000..9999. It now works with any year supported
-by the underlying C implementation.
-
-*** `current-time' now returns extended-format time stamps
-(HIGH LOW USEC PSEC), where the new PSEC slot specifies picoseconds.
-PSEC is typically a multiple of 1000 on current machines. Other
-functions that use this format, such as `file-attributes' and
-`format-time-string', have been changed accordingly. Old-format time
-stamps are still accepted.
-
-*** The format of timers in `timer-list' and `timer-idle-list' is now
-[TRIGGERED-P HI-SECS LO-SECS USECS REPEAT-DELAY FUNCTION ARGS IDLE-DELAY PSECS].
-The PSECS slot is new, and uses picosecond resolution. It can be
-accessed via the new `timer--psecs' accessor.
-
-*** Last-modified time stamps in undo lists now are of the form
-(t HI-SECS LO-SECS USECS PSECS) instead of (t HI-SECS . LO-SECS).
-
-** EIEIO
-
-*** Improved security when handling persistent objects:
-
-**** `eieio-persistent-read' now features optional arguments for specifying
-the class to load, as well as a flag stating whether subclasses are allowed;
-if provided, other classes will be rejected by the reader. For
-compatibility with existing code, if the class is omitted only a
-warning is issued.
-
-**** New specialized reader for pulling in classes and signaling errors
-without evaluation of suspicious code.
-
-**** All slots that contain objects must have a :type. Slots with lists
-of objects must use a new type predicate for a list of an object type.
-
-*** Support for `find-function' and similar utilities, through the addition
-of filename support to generated symbols.
-
-** Floating point functions now always return special values like NaN,
-instead of signaling errors, if given invalid args; e.g., (log -1.0).
-Previously, they returned NaNs on some platforms but signaled errors
-on others. The affected functions are acos, asin, tan, exp, expt,
-log, log10, sqrt, and mod.
-
-** New fringe bitmap `exclamation-mark'.
-
-** Miscellaneous changes to special forms and macros
-
-*** `defun' and `defmacro' are now macros rather than special forms.
-
-*** `kbd' is now a function rather than a macro.
-
-** Miscellaneous new functions
-
-*** `set-temporary-overlay-map' sets up a temporary keymap that
-takes precedence over most other maps for a short while (normally one key).
-
-*** `autoloadp' tests if its argument is an autoloaded object.
-
-*** `autoload-do-load' performs the autoloading operation.
-
-*** `buffer-narrowed-p' tests if the buffer is narrowed.
-
-*** `file-name-base' returns a file name sans directory and extension.
-
-*** `function-get' fetches a function property, following aliases.
-
-*** `posnp' tests if an object is a `posn'.
-
-*** `system-users' returns the user names on the system.
-
-*** `system-groups' returns the group names on the system.
-
-*** `tty-top-frame' returns the topmost frame of a text terminal.
-
-** The following functions and variables are obsolete:
-*** `automount-dir-prefix' (use `directory-abbrev-alist')
-*** `buffer-has-markers-at'
-*** `macro-declaration-function' (use `macro-declarations-alist')
-*** `window-system-version' (provides no useful information)
-*** `dired-pop-to-buffer' (use `dired-mark-pop-up')
-*** `query-replace-interactive'
-*** `font-list-limit' (has had no effect since Emacs < 23)
-
-\f
-* Changes in Emacs 24.3 on Non-Free Operating Systems
-
-** Cygwin builds can use the native MS Windows user interface.
-Pass `--with-w32' to configure. The default remains the X11 interface.
-
-** Two new functions are available in Cygwin builds:
-`cygwin-convert-file-name-from-windows' and
-`cygwin-convert-file-name-to-windows'. These functions allow Lisp
-code to access the Cygwin file-name mapping machinery to convert
-between Cygwin and Windows-native file and directory names.
-
-** When invoked with the -nw switch to run on the Windows text-mode terminal,
-Emacs now supports `mouse-highlight', help-echo (in the echo area), and
-`mouse-autoselect-window'.
-
-** On MS Windows Vista and later Emacs now supports symbolic links.
-
-** On MS Windows, you can pass `--without-libxml2' to configure.bat to omit
-support for libxml2, even if its presence is detected.
-
-** On Mac OS X, the Nextstep port requires OS X 10.4 or later.
-
-** On Mac OS X, configure no longer automatically adds the Fink "/sw"
-directories to the search path. You must add them yourself if you want them.
-
-\f
-* Changes in Emacs 24.2
-
-** This is mainly a bug-fix release.
-
-\f
-* Installation Changes in Emacs 24.1
-
-** Emacs can be compiled with Gtk+ 3.0 if you pass --with-x-toolkit=gtk3
-to configure. Note that other libraries used by Emacs, RSVG and GConf,
-also depend on Gtk+. You can disable them with --without-rsvg and
---without-gconf.
-
-** Emacs can be compiled with GnuTLS support.
-This happens by default if a suitably recent version of the library is
-found at build time. To prevent this, use the configure option
-`--without-gnutls'. See below for GnuTLS features.
-
-** Emacs can be compiled with SELinux support.
-This happens by default if a suitably recent version of the library is
-found at build time. To prevent this, use the configure option
-`--without-selinux'. See below for SELinux features.
-
-** Emacs can be compiled with ImageMagick support.
-This happens by default if a suitably recent version of the library is
-found at build time. To prevent this, use the configure option
-`--without-imagemagick'. See below for ImageMagick features.
-This feature is not available for the Nextstep or MS ports.
-
-** Emacs can be compiled with libxml2 support.
-This happens by default if a suitably recent version of the library is
-found at build time. To prevent this, use the configure option
-`--without-xml2'. See below for libxml2 features.
-
-** By default, the installed Info and man pages are compressed.
-You can disable this by configuring --without-compress-info.
-
-** New configure option --with-wide-int.
-With it, Emacs integers typically have 62 bits, even on 32-bit machines.
-On 32-bit hosts, this raises the limit on buffer sizes from about 512 MiB
-to about 2 GiB.
-
-** New configure options: --with-mmdf, --with-mail-unlink, --with-mailhost.
-These provide no new functionality, they just remove the need to edit
-lib-src/Makefile by hand in order to use the associated features.
-
-** New configure option --enable-use-lisp-union-type.
-This is only useful for Emacs developers to debug certain types of bugs.
-This is not a new feature; only the configure flag is new.
-
-** The standalone programs digest-doc and sorted-doc are removed.
-Emacs now uses Lisp commands `doc-file-to-man' and `doc-file-to-info'.
-
-** The standalone program `fakemail' is removed.
-If you need it, feedmail.el provides a superset of the functionality.
-
-\f
-* Startup Changes in Emacs 24.1
-
-** The --unibyte, --multibyte, --no-multibyte, and --no-unibyte
-command line arguments, and the EMACS_UNIBYTE environment variable, no
-longer have any effect. (They were declared obsolete in Emacs 23.)
-
-** New command line option `--no-site-lisp' removes site-lisp directories
-from load-path. -Q now implies this. This option does not affect the
-EMACSLOADPATH environment variable (and hence has no effect for
-Nextstep builds).
-
-\f
-* Changes in Emacs 24.1
-
-** Completion
-
-*** Many packages now use the `completion-at-point' command,
-rather than implementing separate completion commands.
-
-*** `completion-at-point' now handles tags and semantic completion.
-
-*** Completion in a non-minibuffer now tries to detect the end of completion
-and pops down the *Completions* buffer accordingly.
-
-*** New option `completion-cycle-threshold' allows completion cycling.
-
-*** New option `completion-category-overrides' for overriding the
-default completion style in certain circumstances.
-
-*** New completion style `substring'.
-
-*** Completion of buffer names uses `substring' completion by default.
-
-*** The option `widget-complete-field' has been removed.
-
-** Mail changes
-
-*** The first time you try sending mail, Emacs asks for a mail method.
-This is implemented by a new default for `send-mail-function', which
-is `sendmail-query-once'. This offers to use the smtpmail package, or
-to use the old defaults relying on external mail facilities
-(`sendmail-send-it' on GNU/Linux and other Unix-like systems, and
-`mailclient-send-it' on Windows).
-
-*** Typing `C-c m' in the buffer made by `M-x report-emacs-bug'
-transfers the report to your desktop's preferred mail client, if there
-is one. This uses either the "xdg-email" utility, or Mac OS's "open"
-command.
-
-*** See Changes in Specialized Modes and Packages for SMTPmail changes
-and Mail mode changes
-
-** Emacs server and client changes
-
-*** New option `server-port' specifies the port for TCP Emacs servers.
-
-*** New emacsclient argument -q/--quiet suppresses some status messages.
-
-*** New emacsclient argument --frame-parameters specifies the frame
-parameters of any newly-created graphical frame.
-
-*** If emacsclient shuts down due to Emacs signaling an error,
-its exit status is 1.
-
-*** New emacsclient argument --parent-id ID.
-This opens a client frame in parent X window ID, via XEmbed, similar
-to the --parent-id argument to Emacs.
-
-** Internationalization changes
-
-*** Emacs now supports display and editing of bidirectional text.
-Right-to-left (RTL) scripts, such as Arabic, Farsi, and Hebrew, are
-displayed in the correct visual order as expected by users of those
-scripts. The display reordering is a "full bidirectionality" class
-implementation of the Unicode Bidirectional Algorithm (UBA). Buffers
-with no RTL text should look exactly the same as before.
-
-**** New buffer-local variable `bidi-display-reordering'.
-To disable display reordering in a buffer, change this to nil.
-
-**** New buffer-local variable `bidi-paragraph-direction'.
-If nil (the default), Emacs determines the base direction of each
-paragraph from its text, as specified by the UBA. Setting the value
-to `right-to-left' or `left-to-right' forces a base direction on each
-paragraph.
-
-Paragraphs with right-to-left base direction are displayed starting at
-the right window edge.
-
-*** Enhanced support for characters with no glyphs in available fonts,
-or, on text terminals, characters that cannot be encoded by the
-terminal coding system. The new option `glyphless-char-display-control'
-specifies how to display them: as a hexadecimal code in a box, a thin
-1-pixel space, an empty box, etc.
-
-*** New input methods for Farsi and Bulgarian
-(farsi-isiri-9147, farsi-transliterate-banan, bulgarian-alt-phonetic).
-
-*** `nobreak-char-display' now also highlights Unicode hyphen chars
-(U+2010 and U+2011).
-
-*** New Hebrew translation of the Emacs Tutorial.
-Type `C-u C-h t' to choose it in case your language setup doesn't
-automatically select it.
-
-** An Emacs Lisp package manager is now included.
-This is a convenient way to download and install additional packages,
-from a package repository at http://elpa.gnu.org.
-
-*** M-x list-packages shows a list of packages, which can be
-selected for installation.
-
-*** New command `describe-package', bound to `C-h P'.
-
-*** By default, all installed packages are loaded automatically when
-Emacs starts up. To disable this, set `package-enable-at-startup' to
-nil. To specify the packages to load, customize `package-load-list'.
-
-** Custom theme changes
-
-*** New command `M-x customize-themes', which provides a convenient
-interface for enabling and disabling Custom themes.
-
-*** New option `custom-theme-load-path' is the load path for themes.
-Emacs no longer looks for Custom themes in `load-path'. The default
-value of `custom-theme-load-path' says to look for themes in
-`custom-theme-directory', followed by a subdirectory of
-`data-directory' named "themes/", which contains a small selection of
-built-in Custom themes.
-
-*** New option `custom-safe-themes' records known-safe theme files.
-If a theme is not in this list, Emacs queries before loading it, and
-offers to save the theme to `custom-safe-themes' automatically. By
-default, all themes included in Emacs are treated as safe.
-
-** Improved GTK integration
-
-*** GTK scroll-bars are now placed on the right by default.
-The function `set-scroll-bar-mode' can change this.
-
-*** GTK tool bars can have just text, just images or images and text.
-Customize `tool-bar-style' to choose the style. On a Gnome desktop,
-the default is taken from desktop settings.
-
-*** GTK tool bars can be placed on any edge of the frame.
-The frame-parameter tool-bar-position controls this. It takes the
-values top, left, right or bottom. The Options => Show/Hide menu has
-entries for this.
-
-*** The default colors for selected text (the `region' face) are taken
-from the GTK theme when Emacs is built with GTK.
-
-*** Emacs uses GTK tooltips by default if built with GTK.
-You can disable this by changing `x-gtk-use-system-tooltips' to nil.
-
-** Graphical interface changes
-
-*** On graphical displays, the mode-line no longer ends in dashes.
-Also, the first dash (which does not indicate anything) is just
-displayed as a space.
-
-*** `menu-bar-select-buffer-function' lets you choose another operation
-instead of `switch-to-buffer' when selecting an item in the Buffers menu.
-
-*** Lucid menus and dialogs can display antialiased fonts if Emacs is
-built with Xft. These fonts can be set via X resources, for example:
-Emacs.pane.menubar.font: Courier-12
-
-** Exiting changes
-
-*** Emacs now calls `kill-emacs' if it receives SIGTERM or SIGHUP,
-or if it receives a SIGINT signal in batch mode.
-
-*** `kill-emacs-hook' is now also run in batch mode.
-Third-party code which adds to `kill-emacs-hook' should check if they
-do the right thing in batch mode.
-
-** Scrolling changes
-
-*** New scrolling commands `scroll-up-command' and `scroll-down-command'
-(bound to C-v/[next] and M-v/[prior]) do not signal errors at top/bottom
-of buffer at first key-press (instead they move to top/bottom of buffer)
-when `scroll-error-top-bottom' is non-nil.
-
-*** New option `scroll-error-top-bottom' (see above).
-
-*** New scrolling commands `scroll-up-line' and `scroll-down-line'
-scroll a line instead of full screen.
-
-*** New property `scroll-command' should be set on a command's symbol to
-define it as a scroll command affected by `scroll-preserve-screen-position'.
-
-*** If you customize `scroll-conservatively' to a value greater than 100,
-Emacs will never recenter point in the window when it scrolls due to
-cursor motion commands or commands that move point (e.f., `M-g M-g').
-Previously, you needed to use `most-positive-fixnum' as the value of
-`scroll-conservatively' to achieve the same effect.
-
-*** "Aggressive" scrolling now honors the scroll margins.
-If you customize `scroll-up-aggressively' or
-`scroll-down-aggressively' and move point off the window, Emacs now
-scrolls the window so as to avoid positioning point inside the scroll
-margin.
-
-** Basic SELinux support has been added.
-This requires Emacs to be linked with libselinux at build time.
-
-*** Emacs preserves the SELinux file context when backing up.
-Also, the function `copy-file' has an extra optional argument for
-preserving SELinux context, and the return value of `backup-buffer'
-now includes the SELinux context.
-
-*** New functions `file-selinux-context' and `set-file-selinux-context'
-get and set the SELinux context of a file.
-
-** Trash changes
-
-*** `delete-by-moving-to-trash' now only affects commands that specify
-trashing. This avoids inadvertently trashing temporary files.
-
-*** Calling `delete-file' or `delete-directory' with a prefix argument
-now forces true deletion, regardless of `delete-by-moving-to-trash'.
-
-** File- and directory-local variable changes
-
-*** You can stop directory local vars from applying to subdirectories.
-Add an element (subdirs . nil) to the alist portion of any variables
-settings to indicate that the section should not apply to
-subdirectories.
-
-*** Directory local variables can apply to some file-less buffers.
-Affected modes include dired, vc-dir, and log-edit. For example,
-adding "(diff-mode . ((mode . whitespace)))" to .dir-locals.el will
-turn on `whitespace-mode' for *vc-diff* buffers. Modes should call
-`hack-dir-local-variables-non-file-buffer' to support this.
-
-*** Using "mode: MINOR-MODE" to enable a minor mode is deprecated.
-Instead, use "eval: (minor-mode 1)".
-
-*** The variable `inhibit-first-line-modes-regexps' has been renamed
-to `inhibit-local-variables-regexps'. As the name suggests, it now
-applies to ALL file local variables, not just -*- lines. The
-associated `inhibit-first-line-modes-suffixes' has been renamed in the
-corresponding way.
-
-** Window changes
-
-*** The `quit-window' command now restores the last buffer displayed
-in the quitted window.
-
-*** Resizing an Emacs frame now preserves proportional window sizes,
-modulo restrictions like window minimum sizes and fixed-size windows.
-
-*** The behavior of `display-buffer' is now customizable in detail.
-
-**** New option `display-buffer-base-action' specifies a list of
-user-determined display "actions" (functions and optional arguments
-for choosing the displaying window).
-
-This takes precedence over the default display action, which is
-specified by `display-buffer-fallback-action'.
-
-**** New option `display-buffer-alist' maps buffer name regexps to
-display actions, taking precedence over `display-buffer-base-action'.
-
-*** New option `window-combination-limit'.
-The new option `window-combination-limit' allows to return the space
-obtained for resizing or creating a window more reliably to the window
-from which such space was obtained.
-
-*** New option `window-combination-resize'.
-The new option `window-combination-resize' allows to split a window that
-otherwise cannot be split because it's too small by stealing space from
-other windows in the same combination. Subsequent resizing or deletion
-of the window will resize all windows in the same combination as well.
-
-*** New option `frame-auto-hide-function' lets you choose between
-iconifying or deleting a frame when burying a buffer in a dedicated
-frame, or quitting a window showing a buffer in a frame of its own.
-
-*** New commands `maximize-window' and `minimize-window'.
-These maximize and minimize the size of a window within its frame.
-
-*** New commands `switch-to-prev-buffer' and `switch-to-next-buffer'.
-These functions allow to navigate through the live buffers that have
-been shown in a specific window.
-
-** Minibuffer changes
-
-*** The inactive minibuffer has its own major mode `minibuffer-inactive-mode'.
-This is handy for minibuffer-only frames, and is also used for the feature
-where mouse-1 pops up *Messages*"', which can now easily be changed.
-
-*** Minibuffers set `truncate-lines' to nil.
-If you want to change the value to something else, you could use
-for example `minibuffer-setup-hook'.
-
-** `auto-mode-case-fold' is now enabled by default.
-
-** `backup-by-copying-when-mismatch' now defaults to t.
-
-** New basic faces `error', `warning', `success'.
-These are used to highlight text indicating failure, caution or
-successful operation.
-
-** New option `list-colors-sort' defines the color sort order
-for `list-colors-display'.
-
-** The variable `focus-follows-mouse' now always defaults to nil.
-
-\f
-* Editing Changes in Emacs 24.1
-
-** Search changes
-
-*** C-y in Isearch is now bound to `isearch-yank-kill', instead of
-`isearch-yank-line'.
-
-*** M-y in Isearch is now bound to `isearch-yank-pop', instead of
-`isearch-yank-kill'.
-
-*** M-s C-e in Isearch is now bound to `isearch-yank-line'.
-
-** New commands `count-words-region' and `count-words'.
-
-*** M-= is bound to `count-words-region', not `count-lines-region'.
-The `count-words-region' command, when called interactively, reports
-the number of lines, words, and characters in the region. It is a
-superset of the old `count-lines-region', which is now an obsolete
-alias for it.
-
-** The command `just-one-space' (M-SPC), if given a negative argument,
-also deletes newlines around point.
-
-** Deletion changes
-
-*** New option `delete-active-region'.
-If non-nil, [delete] and DEL delete the region if it is active and no
-prefix argument is given. If set to `kill', those commands kill
-instead.
-
-*** New command `delete-forward-char', bound to [delete].
-This is meant for interactive use, and obeys `delete-active-region'.
-The command `delete-char' does not obey `delete-active-region'.
-
-*** `delete-backward-char' is now a Lisp function.
-Apart from obeying `delete-active-region', its behavior is unchanged.
-However, the byte compiler now warns if it is called from Lisp; Lisp
-callers should use delete-char with a negative argument instead.
-
-*** The option `mouse-region-delete-keys' has been deleted.
-
-** Selection changes.
-
-The default handling of clipboard and primary selections has been
-changed to conform with modern X applications. In short, most
-commands for killing and yanking text now use the clipboard, while
-mouse commands use the primary selection.
-
-In the following, we provide a list of these changes, followed by a
-list of steps to get the old behavior back if you prefer that.
-
-*** `select-active-regions' now defaults to t.
-Merely selecting text (e.g. with drag-mouse-1) no longer puts it in
-the kill ring. The selected text is put in the primary selection, if
-the system possesses a separate primary selection facility (e.g. X).
-
-**** `select-active-regions' also accepts a new value, `only'.
-This means to only set the primary selection for temporarily active
-regions (usually made by mouse-dragging or shift-selection);
-"ordinary" active regions, such as those made with C-SPC followed by
-point motion, do not alter the primary selection.
-
-**** `mouse-drag-copy-region' now defaults to nil.
-
-*** mouse-2 is now bound to `mouse-yank-primary'.
-This pastes from the primary selection, ignoring the kill-ring.
-Previously, mouse-2 was bound to `mouse-yank-at-click'.
-
-*** `x-select-enable-clipboard' now defaults to t on all platforms.
-
-*** `x-select-enable-primary' now defaults to nil.
-Thus, commands that kill text or copy it to the kill-ring (such as
-M-w, C-w, and C-k) also use the clipboard---not the primary selection.
-
-**** The "Copy", "Cut", and "Paste" items in the "Edit" menu are now
-exactly equivalent to M-w, C-w, and C-y respectively.
-
-**** Note that on MS-Windows, `x-select-enable-clipboard' was already
-non-nil by default, as Windows does not support the primary selection
-between applications.
-
-*** To return to the previous behavior, do the following:
-
-**** Change `select-active-regions' to nil.
-**** Change `mouse-drag-copy-region' to t.
-**** Change `x-select-enable-primary' to t (on X only).
-**** Change `x-select-enable-clipboard' to nil.
-**** Bind `mouse-yank-at-click' to mouse-2.
-
-*** Support for X cut buffers has been removed.
-
-*** X clipboard managers are now supported.
-To inhibit this, change `x-select-enable-clipboard-manager' to nil.
-
-** New command `C-x r N' (`rectangle-number-lines') numbers the lines
-in the current rectangle. With a prefix argument, this prompts for a
-number to count from and for a format string.
-
-** `redisplay-dont-pause' now defaults to t.
-This makes Emacs feel more responsive to editing commands that arrive
-at high rate, e.g. if you lean on some key, because stopping redisplay
-in the middle (when this variable is nil) forces more expensive
-updates later on, and Emacs appears to be unable to keep up.
-
-** The behavior of <TAB> for active regions in Text mode has changed.
-In Text and related modes, typing <TAB> (`indent-for-tab-command')
-when the region is active causes Emacs to indent all the lines in the
-region, aligning them with the line previous to the first line in the
-region (or with the left margin if there is no previous line).
-
-** When `occur' is called with a prefix argument, matching strings are
-collected into the `*Occur*' buffer without line numbers. If there
-are parenthesized subexpressions in the specified regexp, `occur'
-reads replacement text that may contain \\& and \\N whose convention
-follows `replace-match'.
-
-\f
-* Changes in Specialized Modes and Packages in Emacs 24.1
-
-** Archive Mode has basic support for browsing and updating 7z archives.
-
-** BibTeX mode
-
-*** BibTeX mode now supports biblatex.
-Use the variable `bibtex-dialect' to select different BibTeX dialects.
-`bibtex-entry-field-alist' is now an obsolete alias for
-`bibtex-BibTeX-entry-alist'.
-
-*** New command `bibtex-search-entries', bound to C-c C-a.
-
-*** New `bibtex-entry-format' option `sort-fields', disabled by default.
-
-*** New variable `bibtex-search-entry-globally'.
-
-** Browse-url
-
-*** New option `browse-url-mailto-function' specifies how to handle "mailto:"s.
-
-*** The default browser used by the package is now the "xdg-open" program,
-on platforms that support it. This calls your desktop's preferred browser.
-
-** Calc
-
-*** Support for musical notes.
-
-*** Support for logarithmic units.
-
-*** No longer uses the tex prefix for TeX specific unit names when
-using TeX or LaTeX mode.
-
-*** New option to highlight selections using faces.
-
-*** `calc-histogram' has the option of using a vector to determine the bins.
-
-*** New "O" option prefix.
-
-*** Use the "O" prefix to "d r" (`calc-radix') to turn on twos-complement mode.
-
-** Calendar, Diary, and Appt
-
-*** Diary entries can contain non-printing "comments".
-See the variable `diary-comment-start'.
-
-*** Appointments can specify their individual warning times.
-See the variable `appt-warning-time-regexp'.
-
-*** The function specified by `appt-disp-window-function' may be passed
-lists of arguments if multiple appointments are due at similar times.
-If you are using a custom function for this, you should update it.
-
-*** New function `diary-hebrew-birthday'.
-
-*** Elements of `calendar-day-abbrev-array' and `calendar-month-abbrev-array'
-may no longer be nil, but must all be strings.
-
-*** The obsolete (since Emacs 22.1) method of enabling the appt
-package by adding `appt-make-list' to `diary-hook' has been removed.
-Use `appt-activate' instead.
-
-*** Some appt variables (obsolete since Emacs 22.1) have been removed:
-appt-issue-message (use the function appt-activate)
-appt-visible/appt-msg-window (use the variable appt-display-format)
-
-*** Some diary function aliases (obsolete since Emacs 22.1) have been removed:
-view-diary-entries, list-diary-entries, show-all-diary-entries
-
-** CC Mode
-
-*** New feature to "guess" the style in an existing buffer.
-The main entry point is M-x c-guess.
-
-*** Java Mode now supports Java 5.0 (Tiger) and 6 (Mustang).
-
-*** `c-beginning-of-defun' and `c-end-of-defun' now respect nested scopes.
-Thus C-M-a will, by default, go to the beginning of the immediate function,
-not the top level.
-
-*** "Macros with semicolons" can be registered for correct indentation.
-Where such a macro ends a line (no semicolon) the next statement is no longer
-parsed as a statement continuation.
-
-** Comint and modes derived from it use the standard completion code.
-
-** Compilation mode
-
-*** Compilation mode can be used without Font Lock mode.
-`compilation-parse-errors-function' is now obsolete.
-
-*** New variable `compilation-filter-start', which is bound while
-`compilation-filter-hook' runs. It records the start position of the
-text inserted by `compilation-filter'.
-
-*** `compilation-error-screen-columns' and `compilation-first-column'
-are obeyed in the editing buffer. So programming language modes can
-set them, whereas previously only the value in the *Compilation*
-buffer was used.
-
-** Customize
-
-*** Customize buffers now contain a search field.
-The search is performed using `customize-apropos'.
-To turn off the search field, set `custom-search-field' to nil.
-
-*** Options in customize group buffers start out hidden if not customized.
-Use the arrow to the left of the option name to toggle visibility.
-
-*** custom-buffer-sort-alphabetically now defaults to t.
-
-*** The color widget now has a "Choose" button, which allows you to
-choose a color via `list-colors-display'.
-
-** D-Bus
-
-*** It is now possible to access buses other than the default system
-or session bus.
-
-*** The `dbus-register-method' and `dbus-register-property' functions
-optionally do not register names.
-
-*** The new function `dbus-register-service' registers a known service
-name on a D-Bus without also registering a property or a method.
-
-** Dired-x
-
-*** C-x C-j (`dired-jump') and C-x 4 C-j (`dired-jump-other-window'),
-if called with a prefix argument, read a file name from the minibuffer
-instead of using the current buffer.
-
-*** The "dired local variables" feature of Dired-x is obsolete.
-The standard directory local variables feature replaces it.
-
-** ERC changes
-
-*** New options `erc-autojoin-timing' and `erc-autojoin-delay',
-controlling attempts to autojoin a channel.
-
-*** New variable `erc-coding-system-precedence': If we use `undecided'
-as the server coding system, this variable will then be consulted.
-The default is to decode strings that can be decoded as utf-8 as
-utf-8, and do the normal `undecided' decoding for the rest.
-
-** Eshell changes
-
-*** The default value of `eshell-directory-name' has changed
-to be an "eshell" directory in `user-emacs-directory'.
-The old "~/.eshell/" directory is still used if it exists, though.
-
-** gdb-mi
-
-*** The M-x gdb command now uses the GDB Machine Interface protocol.
-It now supports multithread non-stop debugging and simultaneous
-debugging of several threads.
-
-** Image mode
-
-*** RET (`image-toggle-animation') toggles animation, if applicable.
-Animation plays once, unless the option `image-animate-loop' is non-nil.
-
-** Info
-
-*** New command M-x info-display-manual displays a named Info manual.
-If that manual is already visited in some Info buffer, it displays
-that buffer. (This is handy if you have many manuals in many *info*
-buffers, and don't remember the name of the buffer visiting the manual
-you want to consult.) Otherwise, it loads and displays the manual.
-
-*** `e' is now bound to `end-of-buffer' rather than to `Info-edit'.
-This is for compatibility with the stand-alone Info reader program,
-and also because `Info-edit' is a rarely used command that is disabled
-by default.
-
-** Mail mode changes (not Message mode)
-
-*** New command M-x mail-add-attachment for adding MIME attachments
-
-*** The command M-x mail-attach-file was renamed to M-x mail-insert-file.
-(Its name is misleading, since it has nothing to do with MIME
-attachments.) The old name is now an obsolete alias to the new name.
-
-** MH-E has been updated to MH-E version 8.3.1.
-See MH-E-NEWS for details.
-
-** Modula-2 mode provides auto-indentation.
-
-** mpc.el: Can use pseudo tags of the form tag1|tag2 as a union of two tags.
-
-** nXML mode no longer binds C-RET to `nxml-complete'.
-Completion is now performed via `completion-at-point', bound to C-M-i
-or M-TAB. If `nxml-bind-meta-tab-to-complete-flag' is non-nil (the
-default), this performs tag completion.
-
-** Org mode has been updated to version 7.8.09.
-See ORG-NEWS for details.
-
-** Prolog mode has been completely revamped, with lots of additional
-functionality such as more intelligent indentation, electricity,
-support for more variants, including Mercury, and a lot more.
-
-** Rmail
-
-*** The command `rmail-epa-decrypt' decrypts OpenPGP data
-in the Rmail incoming message.
-
-*** The variable `rmail-message-filter' no longer has any effect.
-This change was made in Emacs 23.1 but was not advertised at the time.
-Try using `rmail-show-message-hook' instead.
-
-** Shell mode
-
-*** M-x shell prompts for the shell path name if the default directory
-is a remote file name and neither the environment variable $ESHELL nor
-the variable `explicit-shell-file-name' is set.
-
-*** TAB is now bound to the standard `completion-at-point' command,
-which now implements the pcomplete rules for shell command completion.
-
-** SMTPmail
-
-*** SMTPmail now uses encrypted connections (via STARTTLS) by default
-if the mail server supports them. This uses either built-in GnuTLS
-support, or the starttls.el library. Customize `smtpmail-stream-type'
-to change this.
-
-*** The variable `smtpmail-auth-credentials' has been removed.
-By default, the information is now stored in the file ~/.authinfo.
-This was the default value of smtpmail-auth-credentials. If you had
-customized smtpmail-auth-credentials to a list of user names and
-passwords, those settings are not used. During your first connection
-to the smtp server, Emacs will prompt for the user name and password,
-and offer to save them to ~/.authinfo. Or you can manually copy the
-credentials to ~/.authinfo. For example, if you had
-
- (setq smtpmail-auth-credentials
- '(("mail.example.org" 25 "jim" "s!cret")))
-
-then the equivalent line in ~/.authinfo would be
-
- machine mail.example.org port 25 login jim password s!cret
-
-See the auth-source manual for more information, e.g. on encrypting
-the credentials file.
-
-*** The variable `smtpmail-starttls-credentials' has been removed.
-If you had that set, you need to put
-
- machine smtp.whatever.foo port 25 key "~/.my_smtp_tls.key" cert "~/.my_smtp_tls.cert"
-
-in your ~/.authinfo file instead.
-
-*** SMTPmail defaults to using the address in the From: header as the
-SMTP MAIL FROM envelope. To override this, set `mail-envelope-from'
-to the address you wish to use instead.
-
-** SQL mode
-
-*** New options `sql-port', `sql-connection-alist', `sql-send-terminator',
-and `sql-oracle-scan-on'.
-
-*** New options controlling prompting for login parameters.
-Each supported product has a custom variable `sql-*-login-params',
-which is a list of the parameters to be prompted for before a
-connection is established.
-
-*** The command `sql-product-interactive' now takes a prefix argument,
-which causes it to prompt for an SQL product.
-
-*** Product-specific SQL interactive commands now take prefix arguments.
-These commands (`sql-sqlite', `sql-postgres', `sql-mysql', etc.),
-given a prefix argument, prompt for a name for the SQL interactive
-buffer. This reduces the need for calling `sql-rename-buffer'.
-
-*** SQL interactive modes suppress command continuation prompts, and
-replace tabs with spaces. The first change impacts multiple line SQL
-statements entered with C-j between each line, statements yanked into
-the buffer and statements sent with `sql-send-*' functions. The
-second prevents the MySQL and Postgres interpreters from listing
-object name completions when sent text via `sql-send-*' functions.
-
-*** New command `sql-connect' starts a predefined SQLi session,
-using the login parameters from `sql-connection-alist'.
-
-*** New "Save Connection" menu item in SQLi buffers.
-This gathers the login params specified for the SQLi session, if it
-was not started by a connection, and saves them as a new connection.
-
-*** New commands for listing database objects and details:
-sql-list-all and sql-list-table.
-
-*** An API for manipulating SQL product definitions has been added.
-
-** TeX modes
-
-*** latex-electric-env-pair-mode keeps \begin..\end matched on the fly.
-
-** Tramp
-
-*** New inline access method "ksu" (kerberized su).
-
-*** The following access methods are discontinued: "ssh1_old",
-"ssh2_old", "scp1_old", "scp2_old", "imap", "imaps" and "fish".
-
-*** The user option `remote-file-name-inhibit-cache' controls whether
-remote file attributes are cached for better performance.
-
-*** The option `ange-ftp-binary-file-name-regexp' has changed its
-default value to "".
-
-*** Handlers for `file-selinux-context' and `set-file-selinux-context'
-for remote machines which support SELinux.
-
-** New function `url-queue-retrieve', which behaves like url-retrieve,
-but with limits (`url-queue-parallel-processes', `url-queue-timeout') on
-the degree of parallelism.
-
-** VC and related modes
-
-*** Support for pulling on distributed version control systems.
-The command C-x v + (`vc-pull') runs a "pull" operation, if it is
-supported (currently with Bzr, Git, and Mercurial), to update the
-current branch and working tree. A prefix argument means to prompt
-the user for specifics, e.g. a pull location.
-
-*** `vc-update' is now an alias for `vc-pull'.
-
-*** Support for merging on distributed version control systems.
-The command C-x v m (`vc-merge') now runs a "merge" operation, if it
-is supported (currently with Bzr, Git, and Mercurial), to merge
-changes from another branch into the current one. It prompts for
-specifics, e.g. a merge source.
-
-*** New option `vc-revert-show-diff' controls whether `vc-revert'
-shows a diff while querying the user. It defaults to t.
-
-*** Log entries in some Log View buffers can be toggled to display a
-longer description by typing RET (log-view-toggle-entry-display).
-This is currently supported for Bzr, Git, and Mercurial (to support
-another backend, define a `log-view-expanded-log-entry-function').
-In the Log View buffers made by C-x v L (`vc-print-root-log'), you can
-use this to display the full log entry for the revision at point.
-
-*** New command `vc-ediff' allows visual comparison of two revisions
-of a file similar to `vc-diff', but using ediff backend.
-
-*** The option `vc-initial-comment' was removed in Emacs 23.2, but
-this was not advertised at the time.
-
-*** `vc-toggle-read-only' is an obsolete alias for `toggle-read-only'.
-Since Emacs 23, it has done the same thing as `toggle-read-only', but
-this was not advertised at the time.
-
-** Obsolete modes
-
-*** abbrevlist.el
-
-*** erc-hecomplete.el (use erc-pcomplete.el instead)
-
-*** partial-completion-mode (complete.el) is obsolete.
-You can get a comparable behavior with:
-(setq completion-styles '(partial-completion initials))
-(setq completion-pcm-complete-word-inserts-delimiters t)
-
-*** pc-mode.el is obsolete (CUA mode is much more comprehensive).
-
-*** pgg is obsolete (use EasyPG instead).
-
-*** sregex.el is obsolete, since rx.el is a strict superset.
-
-*** s-region.el and pc-select.el are obsolete.
-They are superseded by shift-select-mode, enabled by default since 23.1.
-
-*** vc-mcvs.el is obsolete (for lack of a maintainer).
-
-** Miscellaneous
-
-*** The Landmark game is now invoked with `landmark', not `lm'.
-Its functions and variables have been similarly renamed.
-
-*** In `ido-file-completion-map', C-v is no longer bound to `ido-toggle-vc'.
-(This interfered with cua-mode.)
-
-*** f90.el has some support for Fortran 2008 syntax.
-
-*** `copyright-fix-years' can optionally convert consecutive years to ranges.
-
-*** New command `nato-region' converts text to NATO phonetic alphabet.
-
-\f
-* New Modes and Packages in Emacs 24.1
-
-** Occur Edit mode applies edits made in *Occur* buffers to the
-original buffers. It is bound to "e" in Occur mode.
-
-** New global minor mode electric-pair-mode.
-When enabled, typing an open parenthesis automatically inserts the
-matching closing one.
-
-** New global minor mode electric-indent-mode.
-When enabled, typing certain characters triggers reindentation.
-Major modes wishing to use this can set electric-indent-chars or
-electric-indent-functions.
-
-** New global minor mode electric-layout-mode.
-When enabled, typing certain characters automatically inserts newlines.
-Major modes wishing to use this can set electric-layout-rules.
-
-** tabulated-list.el provides a generic major mode for tabulated data,
-from which other modes can be derived.
-
-** pcase.el provides the ML-style pattern matching macro `pcase'.
-
-** secrets.el is an implementation of the Secret Service API, an
-interface to password managers like GNOME Keyring or KDE Wallet. The
-Secret Service API requires D-Bus for communication. The command
-`secrets-show-secrets' offers a buffer with a visualization of the
-secrets.
-
-** notifications.el provides an implementation of the Desktop
-Notifications API. It requires D-Bus for communication.
-
-** soap-client.el supports access to SOAP web services from Emacs.
-soap-inspect.el is an interactive inspector for SOAP WSDL structures.
-
-** New generic mode, xmodmap-generic-mode, for xmodmap files.
-
-** New emacs-lock.el package.
-The previous version has been moved to obsolete/old-emacs-lock.el.
-Now, there is a proper minor mode `emacs-lock-mode'. Protection
-against exiting Emacs and killing the buffer can be set separately.
-The mechanism for automatically turning off protection for buffers
-with dead inferior processes has been generalized.
-
-\f
-* Incompatible Lisp Changes in Emacs 24.1
-
-** Passing a nil argument to a minor mode function call now ENABLES
-the minor mode unconditionally. This is so that you can write e.g.
-
- (add-hook 'text-mode-hook 'foo-mode)
-
-to enable foo-mode in Text mode buffers, removing the need for
-`turn-on-foo-mode' style functions. This affects all mode commands
-defined by `define-minor-mode'. If called interactively, the mode
-command still toggles the minor mode.
-
-** The return value of `backup-buffer' has changed.
-It is now a list of three elements, where the second element is a list
-describing the original file's SELinux context. If Emacs or the
-system lacks SELinux support, the context list is (nil nil nil nil).
-See "Basic SELinux support" above, under "Changes in Emacs 24.1".
-
-** `char-direction-table' and the `char-direction' function were deleted.
-They were buggy and inferior to the new support of bidirectional
-editing introduced in Emacs 24. If you need the bidirectional
-properties of a character, use `get-char-code-property' with the last
-argument `bidi-class'.
-
-** `copy-directory' now copies the source directory as a subdirectory
-of the target directory, if the latter is an existing directory. The
-new optional arg COPY-CONTENTS, if non-nil, makes the function copy
-the contents directly into a pre-existing target directory.
-
-** For mouse click input events in the text area, the Y pixel
-coordinate in the POSITION list now counts from the top of the text
-area, excluding any header line. Previously, it counted from the top
-of the header line.
-
-** Support for "old-style" backquotes, obsolete for 10+ years, has
-been further reduced. Now a backquote not followed by a space is
-always treated as a "new-style" backquote. Please remove all
-"old-style" backquotes from your code. If your code uses backquotes
-as documented in the Elisp manual, and compiles without warning, then
-you have nothing to do in this regard. Code not following the
-appropriate conventions may fail to compile.
-
-The most common cause of trouble seems to be an old-style backquote
-followed by a newline. Another cause of trouble is vector notation
-for key sequence notation: instead of [(control ,)] and [(control ')],
-you should write [(control ?,)] and [(control ?')], which will work in
-older Emacsen too.
-
-** The macro `eval-at-startup' was removed in Emacs 23.2, but this
-was not advertised at the time. The function `custom-initialize-delay'
-replaced all known uses.
-
-** `view-buffer' now treats special mode-class in the same way that
-`view-file' has since Emacs 22 (i.e. it won't enable View mode if the
-major mode is special).
-
-** Menu and tool bar changes
-
-*** During startup, Emacs no longer adds entries for `menu-bar-lines'
-and `tool-bar-lines' to `default-frame-alist' and `initial-frame-alist'.
-With these alist entries omitted, `make-frame' checks the value of the
-variable `menu-bar-mode'/`tool-bar-mode' to determine whether to create
-a menu-bar or tool-bar, respectively. If the alist entries are added,
-they override the value of `menu-bar-mode'/`tool-bar-mode'.
-
-*** The menu bar bindings's caches are not used any more.
-Use (where-is-internal <def> nil t) instead.
-
-** Regions created by mouse dragging are now normal active regions,
-similar to those created by shift-selection (see Selection changes
-above). In previous Emacs versions, these regions were delineated by
-`mouse-drag-overlay'; that variable has been removed.
-
-** The fourth argument of `filter-buffer-substring' has been removed.
-If you want to remove text properties from the final result, simply
-pass the result through substring-no-properties.
-
-** cl.el no longer provides `cl-19'.
-
-** The following obsolete functions and aliases have been removed
-(the appropriate new function is given in parentheses; "not needed"
-means you can just remove all calls to the function in question):
-
-*** `comint-kill-output' (`comint-delete-output')
-*** `decompose-composite-char' (`char-to-string')
-*** `outline-visible' (`outline-invisible-p')
-*** `internal-find-face' (`facep')
-*** `internal-get-face' (`facep and check-face')
-*** `frame-update-faces' (not needed)
-*** `frame-update-face-colors' (`frame-set-background-mode')
-*** `x-frob-font-weight' and `x-frob-font-slant' (`make-face-*' functions)
-*** `x-make-font-bold' and `x-make-font-demibold' (`make-face-bold')
-*** `x-make-font-italic' and `x-make-font-oblique' (`make-face-italic')
-*** `x-make-font-bold-italic' (`make-face-bold-italic')
-*** `x-make-font-unbold' (`make-face-unbold')
-*** `x-make-font-unitalic' (`make-face-unitalic')
-*** `mldrag-drag-mode-line' (`mouse-drag-mode-line')
-*** `mldrag-drag-vertical-line' (`mouse-drag-vertical-line')
-*** `iswitchb-default-keybindings' (`iswitchb-mode')
-*** `char-bytes' (== 1)
-*** `isearch-return-char' (`isearch-printing-char')
-*** `make-local-hook' (not needed)
-*** `set-screen-height' (`set-frame-height')
-*** `set-screen-width' (`set-frame-width')
-
-** The following obsolete variables and varaliases have been removed
-(the appropriate new variable is given in parentheses):
-
-*** `checkdoc-minor-keymap' (`checkdoc-minor-mode-map')
-*** `vc-header-alist' (`vc-BACKEND-header')
-*** `directory-sep-char' (== ?/)
-*** `font-lock-defaults-alist' (`font-lock-defaults')
-*** `e' (`float-e').
-
-** The following obsolete files were removed:
-sc.el, x-menu.el, rnews.el, rnewspost.el
-
-** The format of the finder-inf.el file has changed, since the Finder
-mechanism is now based on the package system. The variable
-`finder-package-info' is replaced by `package--builtins' and
-`finder-keywords-hash'.
-
-** When generating autoloads, `update-directory-autoloads' no longer
-assumes every inspected file is in your `load-path'. It instead
-generates relative names according to the current `load-path'.
-
-\f
-* Lisp Changes in Emacs 24.1
-
-** Code can now use lexical scoping by default instead of dynamic scoping.
-The `lexical-binding' variable enables lexical scoping for local
-variables. It is typically set via a file-local variable in the first
-line of the file, in which case it applies to all the code in that
-file.
-
-*** `eval' takes a new optional argument `lexical' to choose the new lexical
-binding instead of the old dynamic binding mode.
-
-*** Lexically scoped interpreted functions are represented with a new form
-of function value which looks like (closure ENV ARGS &rest BODY).
-
-*** New macro `letrec' to define recursive local functions.
-
-*** `defvar' and `defconst' now mark the variable as special (dynamic).
-So do `defcustom' and other forms that call `defvar' as a subroutine.
-
-*** New function `special-variable-p' to check whether a variable is
-declared as dynamically bound.
-
-*** The form ((lambda ...) ...) is deprecated.
-
-** An Emacs Lisp testing tool is now included.
-Emacs Lisp developers can use this tool to write automated tests for
-their code. See the ERT info manual for details.
-
-** Changes for bidirectional display and editing
-
-*** New function `current-bidi-paragraph-direction'.
-This returns the base direction of the paragraph at point.
-
-*** New function `bidi-string-mark-left-to-right'.
-Given a string containing characters from right-to-left scripts, this
-function returns another string which can be safely inserted into a
-buffer, such that any following text will be always displayed to the
-right of that string. (This works by appending an invisible Unicode
-"LEFT-TO-RIGHT MARK" character if the argument string might need it.)
-
-This is useful when the buffer has overall left-to-right paragraph
-direction and you need to insert a string whose contents are not known
-in advance, without disrupting the layout of the line.
-
-** Window changes
-
-*** Window tree functions are accessible in Elisp.
-Functions are provided to return the parent, siblings or child windows
-of any window including internal windows (windows not associated with a
-buffer) in the window tree.
-
-**** New function `window-valid-p' gives non-nil for live and internal
-windows.
-
-**** Window manipulation can deal with internal windows.
-Many window handling functions like `split-window', `delete-window', or
-`delete-other-windows' as well as the window resizing functions can now
-act on any window including internal ones.
-
-*** window-total-height/-width vs window-body-height/-width.
-The function `window-height' has been renamed to `window-total-height'
-and `window-width' has been renamed to `window-body-width'. The old
-names are provided as aliases. Two new functions `window-total-width'
-and `window-body-height' are provided.
-
-*** Window parameters specific to window handling functions.
-For each window you can specify a parameter to override the default
-behavior of a number of functions like `split-window', `delete-window'
-and `delete-other-windows'. The variable `ignore-window-parameters'
-allows to ignore processing such parameters.
-
-*** New semantics of third argument of `split-window'.
-The third argument of `split-window' has been renamed to SIDE and can be
-set to any of the values 'below, 'right, 'above, or 'left to make the
-new window appear on the corresponding side of the window that shall be
-split. Any other value of SIDE will cause `split-window' to split the
-window into two side-by-side windows as before.
-
-*** Window resizing functions.
-A new standard function for resizing windows called `window-resize' has
-been introduced. This and all other functions for resizing windows no
-longer delete any windows when they become too small.
-
-*** Deleting the selected window now selects the most recently selected
-live window on that frame instead.
-
-*** `adjust-window-trailing-edge' adjustments.
-`adjust-window-trailing-edge' can now deal with fixed-size windows and
-is able to resize other windows if a window adjacent to the trailing
-edge cannot be shrunk any more. This makes its behavior more similar to
-that of Emacs 21 without compromising, however, its inability to delete
-windows which was introduced in Emacs 22.
-
-*** Window-local buffer lists.
-Windows now have local buffer lists. This means that removing a buffer
-from display in a window will preferably show the buffer previously
-shown in that window with its previous window-start and window-point
-positions. This also means that the same buffer may be automatically
-shown twice even if it already appears in another window.
-
-*** `switch-to-buffer' has a new optional argument FORCE-SAME-WINDOW,
-which if non-nil requires the buffer to be displayed in the currently
-selected window, signaling an error otherwise. If nil, another window
-can be used, e.g. if the selected one is strongly dedicated.
-
-*** `split-window-vertically' and `split-window-horizontally' renamed
-to `split-window-below' and `split-window-right' respectively.
-The old names are kept as aliases.
-
-*** Display actions
-
-**** The second arg to `display-buffer' and `pop-to-buffer' is now
-named ACTION, and takes a display action of the same form as
-`display-buffer-base-action' (see Changes, above). A non-nil,
-non-list value is treated specially, as the old meaning.
-
-**** New variable `display-buffer-overriding-action'.
-
-**** The procedure of `display-buffer' etc. to choose a window is
-determined by combining `display-buffer-overriding-action',
-`display-buffer-alist', the ACTION arg, `display-buffer-base-action',
-and `display-buffer-fallback-action'. The second and fourth of these
-are user-customizable variables.
-
-See the docstring of `display-buffer' for details.
-
-*** New functions `window-state-get' and `window-state-put'.
-These functions allow to save and restore the state of an arbitrary
-frame or window as an Elisp object.
-
-** Completion
-
-*** New variable `completion-extra-properties' used to specify extra
-properties of the current completion:
-- :annotate-function, same as the old completion-annotate-function.
-- :exit-function, function to call after completion took place.
-
-*** Functions on `completion-at-point-functions' can return any of the
-properties valid for `completion-extra-properties'.
-
-*** `completion-annotate-function' is obsolete.
-
-*** New `metadata' method for completion tables. The metadata thus returned
-can specify various details of the data returned by `all-completions':
-- `category' is the kind of objects returned (e.g., `buffer', `file', ...),
- used to select a style in completion-category-overrides.
-- `annotation-function' to add annotations in *Completions*.
-- `display-sort-function' to specify how to sort entries in *Completions*.
-- `cycle-sort-function' to specify how to sort entries when cycling.
-
-*** `minibuffer-local-filename-must-match-map' is not used any more.
-Instead, the bindings in `minibuffer-local-filename-completion-map'
-are combined with `minibuffer-local-must-match-map'.
-
-*** New variable `completing-read-function' allows overriding the
-behavior of `completing-read'.
-
-** `glyphless-char-display' can now distinguish between graphical and
-text terminal display, via a char-table entry that is a cons cell.
-
-** `pre-command-hook'/`post-command-hook' are not reset to nil on error.
-Instead, the offending function is removed.
-
-** New hook types
-
-*** New function `run-hook-wrapped' for running an abnormal hook by
-passing the hook functions as arguments to a "wrapping" function.
-Like `run-hook-with-args-until-success', it stops at the first
-non-nil return value.
-
-*** New macro `with-wrapper-hook' for running an abnormal hook as a
-set of "wrapping" filters, similar to around advice.
-(A version of this macro was actually added in Emacs 23.2 but was not
-advertised at the time.)
-
-** Debugger changes
-
-*** New macro `condition-case-unless-debug' (this was actually added in
-Emacs 23.1 as condition-case-no-debug, but not advertised)
-
-*** The macro `with-demoted-errors' was added in Emacs 23.1, but not advertised.
-
-*** Variable `stack-trace-on-error' removed.
-
-*** The debugger can now "continue" from an error, which means it will
-jump to the error handler as if the debugger had not been invoked
-instead of jumping all the way to the top-level.
-
-*** Set `debug-on-event' to enter the debugger on events like SIGUSR1.
-This can be useful when `inhibit-quit' is set.
-
-** The new function `server-eval-at' allows evaluation of Lisp forms on
-named Emacs server instances.
-
-** `call-process' and `call-process-region' allow a `(:file "file")' spec
-to redirect STDOUT to a file.
-
-** The function `format-time-string' now supports the %N directive,
-for higher-resolution time stamps.
-
-** New input reading functions
-
-*** New function `read-char-choice' reads a restricted set of
-characters, discarding any inputs not inside the set.
-
-*** The command `read-color' now requires a match for a color name
-or RGB triplet, instead of signaling an error if the user provides
-invalid input.
-
-**** `facemenu-read-color' is now an alias for `read-color'.
-
-** `image-library-alist' is renamed to `dynamic-library-alist'.
-The variable is now used to load all kind of supported dynamic libraries,
-not just image libraries. The previous name is still available as an
-obsolete alias.
-
-** Syntax parsing changes
-
-*** New variable `syntax-propertize-function'.
-This replaces `font-lock-syntactic-keywords' which is now obsolete.
-This allows syntax-table properties to be set independently from font-lock:
-just call syntax-propertize to make sure the text is propertized.
-Together with this new variable come a new hook
-syntax-propertize-extend-region-functions, as well as two helper functions:
-syntax-propertize-via-font-lock to reuse old font-lock-syntactic-keywords
-as-is; and syntax-propertize-rules which provides a new way to specify
-syntactic rules.
-
-*** Syntax tables support a new "comment style c" additionally to style b.
-
-** New hook `post-self-insert-hook', run after `self-insert-command'.
-
-** frame-local variables cannot be let-bound any more.
-
-** Major and minor mode changes
-
-*** `set-auto-mode' now respects mode: local variables at the end of files,
-as well as those in the -*- line.
-
-*** `prog-mode' is a new major mode from which programming modes
-should be derived.
-
-**** `prog-mode-hook' can be used to enable features for programming
-modes, e.g. (add-hook 'prog-mode-hook 'flyspell-prog-mode) to enable
-on-the-fly spell checking for comments and strings.
-
-*** New hook `change-major-mode-after-body-hook', run by
-`run-mode-hooks' just before any other mode hooks.
-
-*** Enabled globalized minor modes can be disabled in specific major modes.
-If the global mode is global-FOO-mode, then run (FOO-mode -1) in the
-major mode's hook, where FOO-mode toggles the mode on a per-buffer basis.
-
-*** `define-minor-mode' accepts new keywords :variable, :after-hook.
-
-** File-handling changes
-
-*** `delete-file' and `delete-directory' now accept optional arg TRASH.
-Trashing is performed if TRASH and `delete-by-moving-to-trash' are
-both non-nil. Interactively, TRASH defaults to t, unless a prefix
-argument is supplied (see Trash changes, above).
-
-*** New file predicates: `file-equal-p', `file-in-directory-p'.
-
-** Tool-bars can display separators.
-Tool-bar separators are handled like menu separators in menu-bar maps,
-i.e. via menu entries of the form `(menu-item "--")'.
-
-** Image API
-
-*** Animated images support (currently animated gifs only).
-
-**** `image-animated-p' returns non-nil if an image can be animated.
-
-**** `image-animate' animates a supplied image spec.
-
-**** `image-animate-timer' returns the timer object for an image that
-is being animated.
-
-*** `image-extension-data' has been renamed to `image-metadata'.
-The old name is an obsolete alias to the new one.
-
-*** Image mode can view any image type that ImageMagick supports.
-This requires Emacs to be built with ImageMagick support.
-
-**** New function `imagemagick-types', defined if ImageMagick support
-is enabled, returns a list of image file extensions that your
-ImageMagick installation supports.
-
-**** New function `imagemagick-register-types' enables ImageMagick
-image types in Image mode and in `create-image' and other helper
-functions.
-
-**** New option `imagemagick-types-inhibit' excludes certain
-ImageMagick image types from `imagemagick-register-types'.
-
-**** With ImageMagick support, there are extra Image mode commands to
-resize and rotate images: `image-transform-fit-to-height',
-`image-transform-fit-to-width', `image-transform-set-rotation', and
-`image-transform-set-scale'.
-
-** `compose-mail' now accepts an optional 8th arg, RETURN-ACTION, and
-passes it to the mail user agent function. This argument specifies an
-action for returning to the caller after finishing with the mail. For
-example, this is used by Rmail to optionally delete a mail window.
-
-** XML and HTML parsing
-If Emacs is compiled with libxml2 support, there are two new
-functions: `libxml-parse-html-region' (which parses "real world" HTML)
-and `libxml-parse-xml-region' (which parses XML). Both return an
-Emacs Lisp parse tree.
-
-** Networking and encryption changes
-
-*** `open-network-stream' can now be used to open an encrypted stream.
-It now accepts an optional `:type' parameter for initiating a TLS
-connection, directly or via STARTTLS. To do STARTTLS, additional
-parameters (`:end-of-command', `:success', `:capabilities-command')
-must also be supplied.
-
-*** New library gnutls.el.
-The new function `gnutls-available-p' returns non-nil if Emacs is
-built with GnuTLS support. The main entry points are
-`open-gnutls-stream' and `gnutls-negotiate'. It's easiest to use
-these functions through `open-network-stream', because that can
-upgrade connections through STARTTLS opportunistically or use plain
-SSL, depending on your needs. For debugging, set `gnutls-log-level'
-greater than 0.
-
-*** New primitive `secure-hash' that supports many secure hash algorithms:
-md5, sha1, sha2, sha224, sha256, sha384, and sha512. The lisp library
-sha1.el has been removed. The `sha1' feature is provided by default.
-
-** Isearch
-
-*** New hook `isearch-update-post-hook' that runs in `isearch-update'.
-
-** Progress reporters can now "spin".
-The MIN-VALUE and MAX-VALUE arguments of `make-progress-reporter' can
-now be nil, or omitted. This makes a "non-numeric" reporter. Each
-time you call `progress-reporter-update' on that progress reporter,
-with a nil or omitted VALUE argument, the reporter message is
-displayed with a "spinning bar".
-
-** New variable `revert-buffer-in-progress-p' is true while a buffer is
-being reverted, even if the buffer has a local `revert-buffer-function'.
-
-** New variables `delayed-warnings-list' and `delayed-warnings-hook'.
-If delayed-warnings-list is non-nil, the command loop calls
-`delayed-warnings-hook' after `post-command-hook'. At present, this
-is only used by Emacs on some platforms to display warnings during
-startup, which might otherwise not be noticed. This uses the
-functions `display-delayed-warnings' and `collapse-delayed-warnings'.
-
-** rx.el has a new `group-n' construct for explicitly numbered groups.
-
-** New function `make-composed-keymap' that constructs a new keymap
-from multiple input maps. You can use this to make a keymap that
-inherits from multiple maps, eg:
- (set-keymap-parent newmap (make-composed-keymap othermap parent))
-
-** New function `string-prefix-p'.
-(This was actually added in Emacs 23.2 but was not advertised at the time.)
-
-** New reader macro ## that stands for the empty symbol.
-This means that the empty symbol can now be read back. Also, #: by itself
-(when not immediately followed by a possible symbol character) stands for
-an empty uninterned symbol.
-
-** New math functions `isnan', `copysign', `frexp', `ldexp'.
-
-** The following functions and variables are obsolete:
-
-*** `tooltip-use-echo-area' is obsolete.
-Rather than setting this to t, disable Tooltip mode instead.
-
-*** buffer-substring-filters is obsolete.
-Use `filter-buffer-substring-functions' instead.
-
-*** `byte-compile-disable-print-circle' is obsolete.
-
-*** `deferred-action-list' and `deferred-action-function' are obsolete.
-Use `post-command-hook' instead.
-
-*** `font-lock-maximum-size' is obsolete.
-
-\f
-* Changes in Emacs 24.1 on Non-Free Operating Systems
-
-** On MS Windows, Emacs warns when using the obsolete init file _emacs,
-and also when HOME is set to C:\ by default.
-
-** New configure.bat options
-
-*** --enable-checking builds Emacs with extra runtime checks.
-
-*** --distfiles specifies files to be included in binary distribution.
-
-*** --without-gnutls disables automatic GnuTLS detection.
-
-*** --lib for general library linkage, works with the USER_LIBS build variable.
-
-** New make target `dist' to create binary distribution for MS Windows.
-
-** The Lisp function `w32-default-color-map' is now obsolete.
-(It is only used internally in the Emacs C code.)