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GNU Emacs NEWS -- history of user-visible changes.
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Copyright (C) 2010-2013 Free Software Foundation, Inc.
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See the end of the file for license conditions.
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Please send Emacs bug reports to bug-gnu-emacs@gnu.org.
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If possible, use M-x report-emacs-bug.

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This file is about changes in Emacs version 24.
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See files NEWS.23, NEWS.22, NEWS.21, NEWS.20, NEWS.19, NEWS.18,
and NEWS.1-17 for changes in older Emacs versions.
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You can narrow news to a specific version by calling `view-emacs-news'
with a prefix argument or by typing C-u C-h C-n.
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Temporary note:
+++ indicates that the appropriate manual has already been updated.
--- means no change in the manuals is called for.
When you add a new item, please add it without either +++ or ---
so we will look at it and add it to the manual.

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* Installation Changes in Emacs 24.4
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** Emacs can be compiled with ACL support.
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This happens by default if a suitable support library is found at
build time, like libacl on GNU/Linux.  To prevent this, use the
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configure option `--disable-acl'.
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** Emacs can be compiled with file notification support.
The configure option `--with-file-notification=LIB' enables file
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notification support in Emacs.  This option's value should be `yes',
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`no', `gfile', `inotify' or `w32'.  `yes' is a synonym for `w32' on
MS-Windows, and for `gfile' otherwise.  The default value is `yes'.

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** The configure option --with-crt-dir has been removed.
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It is no longer needed, as the crt*.o files are no longer linked
specially.

** Emacs for MS-Windows can now be built by running the configure script
using the MSYS environment and MinGW development tools.
This is from now on the preferred method of building Emacs on
MS-Windows.  The Windows-specific configure.bat and makefile.w32-in
files are deprecated.  See the file nt/INSTALL.MSYS for detailed
instructions.
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Using the Posix configure script and Makefile's also means a change in
the directory structure of the Emacs installation on Windows.  It is
now the same as on GNU and Unix systems.  In particular, the auxiliary
programs, such as cmdproxy.exe and hexl.exe, are in
libexec/emacs/VERSION/i686-pc-mingw32 (where VERSION is the Emacs
version), version-independent site-lisp is in share/emacs/site-lisp,
version-specific Lisp files are in share/emacs/VERSION/lisp and in
share/emacs/VERSION/site-lisp, Info docs are in share/info, and data
files are in share/emacs/VERSION/etc.  (Emacs knows about all these
directories and will find the files in there automatically; there's no
need to set any variables due to this change.)

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** Directories passed to configure option `--enable-locallisppath' are
no longer created during installation.

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* Startup Changes in Emacs 24.4
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* Changes in Emacs 24.4
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** Key ? also describes prefix bindings like C-h.

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+++
** `apropos-variable' is now `apropos-user-option'
`apropos-user-option' shows all user options while `apropos-variable'
shows all variables.  When called with a universal prefix argument,
the two commands swap their behaviors.  When `apropos-do-all' is
non-nil, they output the same results.

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+++
** `eval-defun' on an already defined defcustom calls the :set function,
if there is one.

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** If the new variable `enable-dir-local-variables' is nil,
directory local variables are ignored.  May be useful for some modes
that want to ignore directory-locals while still respecting file-locals.

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** The option `set-mark-default-inactive' has been deleted.
This unfinished feature was introduced by accident in Emacs 23.1;
simply disabling Transient Mark mode does the same thing.

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** `initial-buffer-choice' can now specify a function to set up the
initial buffer.

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** `remember-notes' creates a buffer whose content is saved on kill-emacs.
You may think of it as a *scratch* buffer whose content is preserved.
In fact, it was designed as a replacement for *scratch* buffer and can
be used that way by setting `initial-buffer-choice' to `remember-notes'
and `remember-notes-buffer-name' to "*scratch*".  Without the second
change, *scratch* buffer will still be there for notes that do not
need to be preserved.

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** `write-region-inhibit-fsync' now defaults to t in batch mode.

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** ACL support has been added.
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*** Emacs preserves the ACL entries of files when backing up.
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*** New functions `file-acl' and `set-file-acl' get and set the ACL
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entries of a file.  On GNU/Linux, the POSIX ACL interface is used via
libacl.  On MS-Windows, the NT Security APIs are used to emulate the
POSIX ACL interfaces.
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** New option `scroll-bar-adjust-thumb-portion'.
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Available only on X, this option allows to control over-scrolling
using the scroll bar (i.e. dragging the thumb down even when the end
of the buffer is visible).
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** New function `add-face-text-property' has been added, which can be
used to conveniently prepend/append new face attributes to text.

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** In compiled Lisp files, the header no longer includes a timestamp.

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** Multi-monitor support has been added.

*** New functions `display-monitor-attributes-list' and
`frame-monitor-attributes' can be used to obtain information about
each physical monitor on multi-monitor setups.

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*** The functions `display-pixel-width' and `display-pixel-height' now
behave consistently among the platforms: they return the pixel width
or height for all physical monitors associated with the given display
as just they were on X11.  To get information for each physical
monitor, use the new functions above.  Similar notes also apply to
`x-display-pixel-width', `x-display-pixel-height', `display-mm-width',
`display-mm-height', `x-display-mm-width', and `x-display-mm-height'.

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* Editing Changes in Emacs 24.4
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** `split-window' is no longer a command, just a non-interactive function.
As a command it was a special case of `split-window-below', and as such
superfluous.  After being reimplemented in Lisp, its interactive form
was mistakenly retained.

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** New commands `toggle-frame-fullscreen' and `toggle-frame-maximized',
bound to <f11> and M-<f10>, respectively.
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** In keymaps where SPC scrolls, S-SPC now scrolls in the reverse direction.
Eg View mode, etc.

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+++
** New option `visual-order-cursor-movement'.
If this is non-nil, cursor motion with arrow keys will follow the
visual order of characters on the screen: <left> always moves to the
left, <right> always moves to the right, disregarding the surrounding
bidirectional context.

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** New command `kmacro-to-register' to store keyboard macros in registers.

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** Shell Script mode

*** `sh-mode' now has the mode own `add-log-current-defun-function'.
You can pick the name of the function and the variables with `C-x 4 a'.

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* Changes in Specialized Modes and Packages in Emacs 24.4
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** `eshell' now supports visual subcommands and options
Eshell has been able to handle "visual" commands (interactive,
non-line oriented commands such as top that require display
capabilities not provided by eshell) by running them in an Emacs
terminal emulator.  See `eshell-visual-commands'.

This feature has been extended to subcommands and options that make a
usually line-oriented command a visual command.  Typical examples are
"git log" and "git <command> --help" which display their output in a
pager by default.  See `eshell-visual-subcommands' and
`eshell-visual-options'.

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** If your Emacs is compiled with libxml2 support, you can use the new
built-in web browser `eww'.

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** `remember' can now store notes in separates files
You can use the new function `remember-store-in-files' within the
`remember-handler-functions' option.

See `remember-data-directory' and `remember-directory-file-name-format'
for new options related to this function.
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** `ido-decorations' has been slightly extended to give a bit more control.

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** More packages look for ~/.emacs.d/<foo> additionally to ~/.<foo>.
Affected files:
~/.emacs.d/timelog	replaces  ~/.timelog
~/.emacs.d/vip		replaces  ~/.vip
~/.emacs.d/viper	replaces  ~/.viper
~/.emacs.d/ido.last	replaces  ~/.ido.last
~/.emacs.d/kkcrc	replaces  ~/.kkcrc
~/.emacs.d/quickurls	replaces  ~/.quickurls
~/.emacs.d/idlwave	replaces  ~/.idlwave
~/.emacs.d/bdfcache.el	replaces  ~/.bdfcache.el
~/.emacs.d/places	replaces  ~/.emacs-places
~/.emacs.d/shadows	replaces  ~/.shadows
~/.emacs.d/shadow_todo	replaces  ~/.shadow_todo
~/.emacs.d/strokes	replaces  ~/.strokes
~/.emacs.d/notes	replaces  ~/.notes
~/.emacs.d/type-break	replaces  ~/.type-break
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Also the following files used by the now obsolete otodo-mode.el:
~/.emacs.d/todo-do	replaces  ~/.todo-do
~/.emacs.d/todo-done	replaces  ~/.todo-done
~/.emacs.d/todo-top	replaces  ~/.todo-top

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** Delphi mode is now called OPascal mode.
*** All delphi-* variables and functions have been renamed to opascal-*.
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*** `delphi-newline-always-indents' is not supported any more.
Use `electric-indent-mode' instead.
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*** `delphi-tab' is gone, replaced by `indent-for-tab-command'.

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** Eldoc Mode works properly in the minibuffer.

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** jit-lock-debug-mode lets you use the debuggers on code run via jit-lock.

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** completing-read-multiple's separator can now be a regexp.
The default separator is changed to allow surrounding spaces around the comma.

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** Battery

*** Battery information via the BSD `apm' utility is now supported.

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** Buffer Menu

*** `M-s a C-o' shows lines matching a regexp in marked buffers using Occur.

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** Calendar and Diary

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*** New variable `diary-from-outlook-function', used by the command
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`diary-from-outlook'.

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** cl-lib

*** New macro cl-tagbody.

+++
*** letf is now just an alias for cl-letf.

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** Calc

*** Calc by default now uses the Gregorian calendar for all dates, and
uses January 1, 1 AD as its day number 1.  Previously Calc used the
Julian calendar for dates before September 14, 1752, and it used
December 31, 1 BC as its day number 1; the new scheme is more
consistent with Calendar's calendrical system and day numbering.

*** The new variable `calc-gregorian-switch' lets you configure the
date when Calc switches from the Julian to the Gregorian calendar.
Nil, the default value, means to always use the Gregorian calendar.
The value (YEAR MONTH DAY) means to start using the Gregorian calendar
on the given date.

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*** Support for ISO 8601 dates.

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** Desktop

*** `desktop-auto-save-timeout' defines the number of seconds between
auto-saves of the desktop.

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*** `desktop-restore-frames enables saving and restoring the window/frame
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configuration.

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** Dired

*** New minor mode `dired-hide-details-mode' hides details.

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** ERC

*** New option `erc-accidental-paste-threshold-seconds'.
If set to a number, this can be used to avoid accidentally paste large
amounts of data into the ERC input.

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---
** New F90 mode option `f90-smart-end-names'.

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** Icomplete is a bit more like Ido.
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*** key bindings to navigate through and select the completions.
*** The icomplete-separator is customizable, and its default has changed.
*** Removed icomplete-show-key-bindings.

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** Image mode
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*** New commands `n' (`image-next-file') and `p' (`image-previous-file')
visit the next image file and the previous image file in the same
directory, respectively.

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*** New commands to show specific frames of multi-frame images.
`f' (`image-next-frame') and `b' (`image-previous-frame') visit the
next or previous frame.  `F' (`image-goto-frame') shows a specific frame.

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---
*** The command `image-mode-fit-frame' deletes other windows.
When toggling, it restores the frame's previous window configuration.
It also has an optional frame argument, which can be used by Lisp
callers to fit the image to a frame other than the selected frame.

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** Info

*** New face `info-index-match' is used to highlight matches in index
entries displayed by `Info-index-next', `Info-virtual-index' and
`info-apropos'.

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** Hi-Lock

*** New option `hi-lock-auto-select-face'.  When non-nil, hi-lock commands
will cycle through faces in `hi-lock-face-defaults' without prompting.

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*** New global command `M-s h .' (`highlight-symbol-at-point')
highlights the symbol found near point without prompting,
using the next face automatically.

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** Search and Replace
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*** New global command `M-s .' (`isearch-forward-symbol-at-point')
starts a symbol (identifier) incremental search forward with the
symbol found near point added to the search string initially.

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*** `C-x 8 RET' in Isearch mode reads a character by its Unicode name
and adds it to the search string.

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*** `M-s i' in Isearch mode toggles the variable `isearch-invisible'
between nil and the value of the option `search-invisible' (or `open'
when it's nil).
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*** `query-replace' skips invisible text when `search-invisible' is nil,
and opens overlays with hidden text when `search-invisible' is `open'.

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+++
*** By default, prefix arguments do not now terminate Isearch mode.
Set `isearch-allow-prefix' to nil to restore old behavior.

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*** More Isearch commands accept prefix arguments, namely
`isearch-printing-char', `isearch-quote-char', `isearch-yank-word',
`isearch-yank-line'.

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*** Word search now matches whitespace at the beginning/end
of the search string if it contains leading/trailing whitespace.
In an incremental word search or when using a non-nil LAX argument
of `word-search-regexp', the lax matching can also match part of
the first word (in addition to the lax matching of the last word).
The same rules are now applied to the symbol search with the difference
that it matches symbols, and non-symbol characters between symbols.

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** MH-E has been updated to MH-E version 8.5.
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See MH-E-NEWS for details.

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---
** The unrmail command converts from BABYL to mboxrd rather than mboxo.
Customize `unrmail-mbox-format' to change this.

---
** Similarly, customize `rmail-mbox-format' to influence some minor aspects
of how Rmail displays non-MIME messages.

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+++
** New function `ses-rename-cell' to give SES cells arbitrary names.

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** trace-function was largely rewritten.
New features include:
- no prompting for the destination buffer, unless a prefix-arg was used.
- additionally to prompting for a destination buffer, when a prefix-arg is
  used, the user can enter a "context", i.e. Lisp expression whose value at the
  time the function is entered/exited will be printed along with the function
  name and arguments.  Useful to trace the value of (current-buffer) or
  (point) when the function is invoked.

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** New command `delete-duplicate-lines' has new types of operation:
When its arg ADJACENT is non-nil (when called interactively with C-u C-u)
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it works like the utility `uniq'.  Otherwise by default it deletes
duplicate lines everywhere in the region without regard to adjacency.
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When its arg KEEP-BLANKS is non-nil (when called interactively with
C-u C-u C-u), duplicate blank lines are preserved.
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** New `cycle-spacing' command allows cycling between having just one
space, no spaces, or reverting to the original spacing.  Like
`just-one-space' command it can handle or ignore newlines and
leave different number of spaces.

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** Todo mode has been rewritten and enhanced.
New features include:
- support for multiple todo files and archive files of done items;
- renaming, reordering, moving, merging, and deleting categories;
- sortable tabular summaries of categories and the types of items they contain;
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- cross-category lists of items filtered by specific criteria;
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- more fine-grained interaction with the Emacs diary, by being able to decide
  for each todo item whether it appears in the Fancy Diary display;
- highly flexible new item insertion and item editing;
- moving items between categories, storing done items in their category or in
  archive files, undoing or unarchiving done items;
- reprioritizing items by inputting a numerical priority;
- extensive customizability of operation and display, including numerous faces.
To support some of these features, a new file format is used, which is
incompatible with the old format; however, you can convert old todo and done
item files to the new format on initializing the first new todo file, or at any
later time with the provided conversion command.  The old version of
todo-mode.el has been made obsolete and renamed otodo-mode.el.

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** Tramp
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*** New connection method "adb", which allows to access Android
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devices by the Android Debug Bridge.  The variable `tramp-adb-program'
can be used to adapt the path of the "adb" program, if needed.
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*** The connection methods "plink1", "ssh1", "ssh2", "scp1", "scp2",
"scpc" and "rsyncc" are discontinued.  The ssh option
"ControlMaster=auto" is set automatically in all ssh-based methods,
when possible.
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*** Handlers for `file-acl' and `set-file-acl' for remote machines
which support POSIX ACLs.
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*** Handlers for `file-notify-add-watch' and `file-notify-rm-watch'
for remote machines which support filesystem notifications.

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** VHDL mode

*** New options: `vhdl-actual-generic-name', `vhdl-beautify-options'.

*** New commands: `vhdl-fix-statement-region', `vhdl-fix-statement-buffer'.

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** Woman

*** The commands `woman-default-faces' and `woman-monochrome-faces'
are obsolete.  Customize the `woman-* faces instead.

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** Eshell

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*** Added Eshell-Tramp module
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External su and sudo commands are now the default; the internal,
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Tramp-using variants can still be used by enabling the eshell-tramp
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module.

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** New term.el option `term-suppress-hard-newline'.

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** Obsolete packages:

*** longlines.el is obsolete; use visual-line-mode instead.

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+++
*** sup-mouse.el.

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*** terminal.el is obsolete; use term.el instead.

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*** The previous version of todo-mode.el is obsolete and renamed otodo-mode.el.

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*** xesam.el.

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+++
*** yow.el is obsolete; use fortune.el or cookie1.el instead.

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---
*** The Info-edit command is obsolete.  Editing Info nodes by hand
has not been relevant for some time.

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* New Modes and Packages in Emacs 24.4
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** New `superword-mode' in subword.el
`superword-mode' overrides the default word motion commands to treat
symbol_words as a single word, similar to what `subword-mode' does and
using the same internal functions.

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** New nadvice.el package offering lighter-weight advice facilities.
It is layered as:
- add-function/remove-function which can be used to add/remove code on any
  function-carrying place, such as process-filters or `<foo>-function' hooks.
- advice-add/advice-remove to add/remove a piece of advice on a named function,
  much like `defadvice' does.

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** The package file-notify.el provides an interface for file system
notifications.  It requires, that Emacs is compiled with one of the
low-level libraries gfilenotify.c, inotify.c or w32notify.c.

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* Incompatible Lisp Changes in Emacs 24.4
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** The syntax of ?» and ?« is now punctuation instead of matched parens.
Some languages match those as »...« and others as «...» so better stay neutral.

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** The default file coding for Emacs Lisp files is now utf-8.
(See file-coding-system-alist.)  In most cases, this change is transparent, but
files that contain unusual characters without specifying an explicit coding
system may fail to load with obscure errors.
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You should either convert them to utf-8 or add an explicit `coding:' cookie.
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** overriding-terminal-local-map does not replace the local keymaps any more.
It used to disable the minor mode, major mode, and text-property keymaps,
whereas now it simply has higher precedence.

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** Default process filters and sentinels are not nil any more.
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Instead they default to a function which does what the nil value used to do.

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** `read-event' does not return decoded chars in ttys any more.
Just as was the case in Emacs-22 and before, decoding of tty input according to
keyboard-coding-system is not performed in read-event any more.  But contrary
to that past, it is still done before input-decode-map/function-key-map/...

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** Removed inhibit-local-menu-bar-menus.

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** frame-local variables that affect redisplay do not work any more.
More specifically, the redisplay does not bother to check for a frame-local
value when looking up variables.

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** nil and "unbound" are indistinguishable in symbol-function.
`symbol-function' never signals `void-function' any more.
`fboundp' returns non-nil if the symbol was `fset' to nil.

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** `defadvice' does not honor the `freeze' flag and cannot advise
special-forms any more.
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** `dolist' in lexical-binding mode does not bind VAR in RESULT any more.
VAR was bound to nil which was not tremendously useful and just lead to
spurious warnings about an unused var.

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** The return value of `backup-buffer' has changed.
The second argument is no longer an SELinux context, instead it is an
alist of extended attributes as returned by the new function
`file-extended-attributes'.  The attributes can be applied to another
file using `set-file-extended-attributes'.

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* Lisp Changes in Emacs 24.4
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+++
** New macro with-eval-after-load.  Like eval-after-load, but better behaved.

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** Obsoleted functions:
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*** `log10'
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*** `dont-compile'
*** `lisp-complete-symbol'
*** `field-complete'
*** `minibuffer-completion-contents'
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*** `isearch-nonincremental-exit-minibuffer'
*** `isearch-filter-visible'
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*** `generic-make-keywords-list'
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** `with-wrapper-hook' is obsoleted by `add-function'.
The few hooks that used with-wrapper-hook are replaced as follows:
*** `abbrev-expand-function' obsoletes `abbrev-expand-functions'.
*** `completion-in-region-function' obsoletes `completion-in-region-functions'.
*** `filter-buffer-substring-function' obsoletes `filter-buffer-substring-functions'.


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** `get-upcase-table' is obsoleted by the new `case-table-get-table'.

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** Support for filesystem notifications.
Emacs now supports notifications of filesystem changes, such as
creation, modification, and deletion of files.  This requires the
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`glib' API, or the 'inotify' API (on GNU/Linux systems only).  On
MS-Windows systems, this is supported for Windows XP and newer
versions.
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** Changes in autorevert.el

---
*** If Emacs is compiled with file notification support, notifications
are used instead of checking the time stamp of the files.  You can
disable this by setting the user option `auto-revert-use-notify' to
nil.  Alternatively, a regular expression of directories to be
excluded from file notifications can be specified by
`auto-revert-notify-exclude-dir-regexp'.

---
*** The new user option `auto-revert-remote-files' enables reversion
of remote files when set to non-nil.

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** Face changes

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*** The function `face-spec-set' is now analogous to `setq' for face specs.
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Its third arg now accepts values specifying exactly which face spec to
set (defface, custom, or user spec), and it directly sets the relevant
property using the supplied face spec.

*** Face specs set via Custom themes now replace the `defface' spec
rather than inheriting from it (as do face specs set via Customize).

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*** New face characteristic (supports :underline (:style wave))
specifies whether or not the terminal can display a wavy line.

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** Image API

+++
*** `image-animated-p' is now `image-multi-frame-p'.
It returns non-nil for any image that contains multiple frames,
whether or not it specifies a frame delay.

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*** When animating images that do not specify a frame delay,
Emacs uses `image-default-frame-delay'.

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*** New functions `image-current-frame' and `image-show-frame' for getting
and setting the current frame of a multi-frame image.

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** time-to-seconds is not obsolete any more.
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** New function special-form-p.
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** Docstrings can be made dynamic by adding a `dynamic-docstring-function'
text-property on the first char.

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** The `defalias-fset-function' property lets you catch calls to defalias
and redirect them to your own function instead of `fset'.

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** The lock for 'DIR/FILE' is now 'DIR/.#FILE' and may be a regular file.
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When you edit DIR/FILE, Emacs normally creates a symbolic link
DIR/.#FILE as a lock that warns other instances of Emacs that DIR/FILE
is being edited.  Formerly, if there was already a non-symlink file
named DIR/.#FILE, Emacs fell back on the lock names DIR/.#FILE.0
through DIR/.#FILE.9.  These fallbacks have been removed, so that
Emacs now no longer locks DIR/FILE in that case.

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On file systems that do not support symbolic links, the lock is now a
regular file with contents being what would have been in the symlink.
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** The 9th element returned by `file-attributes' is now unspecified.
Formerly, it was t if the file's gid would change if file were deleted
and recreated.  This value has been inaccurate for years on many
platforms, and nobody seems to have noticed or cared.

** The function `file-ownership-preserved-p' now has an optional
argument GROUP which causes it check for file group too.  This can be
used in place of the 9th element of `file-attributes'.

** New functions `group-gid' and `group-real-gid'.

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** The 6th argument to `copy-file' has been renamed to
`preserve-extended-attributes' as it now handles both SELinux context
and ACL entries.

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** Changes to the Emacs Lisp Coding Conventions in Emacs 24.4

*** The package descriptor and name of global variables, constants,
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and functions should be separated by two hyphens if the symbol is not
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meant to be used by other packages.

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* Changes in Emacs 24.4 on Non-Free Operating Systems
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+++
** The "generate a backtrace on fatal error" feature now works on MS Windows.
The backtrace is written to the 'emacs_backtrace.txt' file in the
directory where Emacs was running.

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+++
** The variable `buffer-file-type' is no longer supported.
Setting it has no effect, and %t in the mode-line format is ignored.
Likewise, `file-name-buffer-file-type-alist' is now obsolete, and
modifying it has no effect.

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---
** Lock files now work on MS-Windows.
This allows to avoid losing your edits if the same file is being
edited in another Emacs session or by another user.  See the node
"Interlocking" in the Emacs User Manual for the details.  To disable
file locking, customize `create-lockfiles' to nil.

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** Improved fullscreen support on Mac OS X.
Both native (>= OSX 10.7) and "old style" fullscreen are supported.
Customize `ns-use-native-fullscreen' to change style.  For >= 10.7
native is the default.

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* Installation Changes in Emacs 24.3
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** The default X toolkit is now Gtk+ version 3.
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If you don't pass `--with-x-toolkit' to configure, or if you use
`--with-x-toolkit=gtk' or `--with-x-toolkit=yes', configure will try
to build with Gtk+ version 3, and if that fails, try Gtk+ version 2.
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You can explicitly require a specific version by passing
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`--with-x-toolkit=gtk2' or `--with-x-toolkit=gtk3' to configure.
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** New configure option `--enable-link-time-optimization', to utilize
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an appropriate feature provided by GCC since version 4.5.0.

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** New configure option `--without-all' to disable most of the optional
features (image support, etc.) that are normally enabled by default.
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** New configure option `--enable-gcc-warnings' (for developing/debugging
Emacs).  If building with GCC, this enables compile-time checks that
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warn/give errors about possibly-questionable C code.  On a recent GNU
system there should be no warnings; on older and on non-GNU systems
the results may be useful to developers.
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** The configure option `--enable-use-lisp-union-type' has been
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renamed to `--enable-check-lisp-object-type', as the resulting
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Lisp_Object type no longer uses a union to implement the compile time
check that this option enables.

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** The configure option `--disable-maintainer-mode' has been removed,
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as it was confusingly-named and rarely useful.

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** The configure options `--program-prefix', `--program-suffix', and
`--program-transform-name' apply to more than just the installed
binaries.  Now they also affect the man pages, icons, and the
etc/emacs.desktop file; but not the info pages, since this would break
links between the various manuals.
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** You can use `NO_BIN_LINK=t make install' to prevent the installation
overwriting "emacs" in the installation bin/ directory with a link
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to "emacs-VERSION".
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** Emacs uses libtinfo in preference to libncurses, if available.

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** On FreeBSD and NetBSD, configure no longer adds /usr/local/lib and
/usr/pkg/lib to the linker search path.  You must add them yourself if
you want them.

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** The standalone scripts `rcs-checkin' and `vcdiff' have been removed
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(from the bin and libexec directories, respectively).  The former is
no longer relevant, the latter is replaced by lisp (in vc-sccs.el).

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* Startup Changes in Emacs 24.3
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** Emacs no longer searches for `leim-list.el' files beneath the standard
lisp/ directory.  There should not be any there anyway.  If you have
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been adding them there, put them somewhere else; e.g., site-lisp.
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** The `--no-site-lisp' command line option now works for Nextstep builds.

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* Changes in Emacs 24.3
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** Help
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*** `C-h f' (`describe-function') can now perform autoloading.
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When this command is called for an autoloaded function whose docstring
contains a key substitution construct, that function's library is
automatically loaded, so that the documentation can be shown
correctly.  To disable this, set `help-enable-auto-load' to nil.

*** `C-h f' now reports previously-autoloaded functions as "autoloaded",
even after their associated libraries have been loaded (and the
autoloads have been redefined as functions).

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** ImageMagick
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*** Images displayed via ImageMagick now support transparency and the
:background image specification property.
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*** When available, ImageMagick support is automatically enabled.
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It is no longer necessary to call `imagemagick-register-types'
explicitly to install ImageMagick image types; that function is called
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automatically at startup, or when customizing an imagemagick- option.
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*** Setting `imagemagick-types-inhibit' to t now disables the use of
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ImageMagick to view images.  (You must call `imagemagick-register-types'
afterwards if you do not use customize to change this.)
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*** The new variable `imagemagick-enabled-types' also affects which
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ImageMagick types are treated as images.  The function
`imagemagick-filter-types' returns the list of types that will be
treated as images.
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*** ImageMagick images now support the :max-width and :max-height
keywords.

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** Minibuffer

*** In minibuffer filename prompts, `C-M-f' and `C-M-b' now move to the
next and previous path separator, respectively.
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*** `minibuffer-electric-default-mode' can shorten "(default ...)" to "[...]"
in minibuffer prompts.  Just set `minibuffer-eldef-shorten-default'
non-nil before enabling the mode.

** Mode line

*** New option `mode-line-default-help-echo' specifies the help text
(shown in a tooltip or in the echo area) for any part of the mode line
that does not have its own specialized help text.

*** You can now click mouse-3 in the coding system indicator to invoke
`set-buffer-file-coding-system'.

** Server and client
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*** emacsclient now obeys string values for `initial-buffer-choice',
if it is told to open a new frame without specifying any file to visit
or expression to evaluate.
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*** New option `server-auth-key' specifies a shared server key.

** Emacs now generates backtraces on fatal errors.
On encountering a fatal error, Emacs now outputs a textual description
of the fatal signal, and a short backtrace on platforms like glibc
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that support backtraces.
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** `C-x C-q' is now bound to the new minor mode `read-only-mode'.
This minor mode replaces `toggle-read-only', which is now obsolete.

** Most `y-or-n' prompts now allow you to scroll the selected window.
Typing `C-v' or `M-v' at a y-or-n prompt scrolls forward or backward
respectively, without exiting from the prompt.

** In the Package Menu, newly-available packages are listed as "new",
and sorted above the other "available" packages by default.

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** If your Emacs was built from a bzr checkout, the new variable
`emacs-bzr-version' contains information about the bzr revision used.
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** New option `create-lockfiles' specifies usage of lockfiles.
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It defaults to t.  Changing it to nil inhibits the creation of lock
files (use this with caution).
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** New option `enable-remote-dir-locals', if non-nil, allows directory-local
variables on remote hosts.
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** The entry for PCL-CVS has been removed from the Tools menu.
The PCL-CVS commands are still available via the keyboard.

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** Using "unibyte: t" in Lisp source files is obsolete.
Use "coding: raw-text" instead.

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** In the buffer made by `M-x report-emacs-bug', the `C-c m' binding
has been changed to `C-c M-i' (`report-emacs-bug-insert-to-mailer').
The previous binding, introduced in Emacs 24.1, was a mistake, because
`C-c LETTER' bindings are reserved for user customizations.

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** Internationalization
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*** New language environment: Persian.
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*** New input method `vietnamese-vni'.

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** Nextstep (GNUstep / Mac OS X) port
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*** Support for fullscreen and the frame parameter fullscreen.
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*** A file dialog is used for open/save operations initiated from the
menu/toolbar.

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* Editing Changes in Emacs 24.3
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** Search and Replace
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*** 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
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similar existing feature for regexp Isearch.)
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*** New Isearch command `M-s SPC' toggles lax space matching.
This applies to both ordinary and regexp Isearch.
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*** New option `replace-lax-whitespace'.
If non-nil, `query-replace' uses flexible whitespace matching too.
The default is nil.
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*** 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.

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** Navigation commands
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*** 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').
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** 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.

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** `C-u M-=' now counts lines/words/characters in the entire buffer.
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** `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'.
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** 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.
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** New command `C-x r M-w' (`copy-rectangle-as-kill').
It copies the region-rectangle as the last rectangle kill.
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** Registers
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*** `C-x r +' is now overloaded to invoke `append-to-register'.
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*** New option `register-separator' specifies the register containing
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the text to put between collected texts for use with
M-x append-to-register and M-x prepend-to-register.
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* Changes in Specialized Modes and Packages in Emacs 24.3
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** Common Lisp emulation (CL)
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*** CL's main entry is now (require 'cl-lib).
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`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).
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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*'.
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The old `cl' is now deprecated and is mainly just a bunch of aliases that
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provide the old, non-prefixed names.  Some exceptions are listed below:
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*** `cl-flet' is not like `flet' (which is deprecated).
Instead it obeys the behavior of Common-Lisp's `flet'.
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In particular, in cl-flet function definitions are lexically scoped,
whereas in flet the scoping is dynamic.
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*** `cl-labels' is slightly different from `labels'.
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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.
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*** `cl-letf' is not exactly like `letf'.
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The only difference is in details that relate to some deprecated usage
of `symbol-function' in place forms.
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*** `progv' was rewritten to use the `let' machinery.
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A side effect is that variables without corresponding values are bound
to nil rather than being made unbound.
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*** The following methods of extending `setf' are obsolete
(use features from gv.el instead):
`define-modify-macro' (use `gv-letplace')
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`defsetf' (use `gv-define-simple-setter' or `gv-define-setter')
`define-setf-expander' (use `gv-define-setter' or `gv-define-expander')
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`get-setf-method' no longer exists (see "Incompatible Lisp Changes")
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** Diff mode
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*** 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').
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*** 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.
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*** The new command `diff-delete-trailing-whitespace' removes trailing
whitespace introduced by a diff.
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** 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':
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**** `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
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** 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.

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*** The function `dbus-call-method' is now non-blocking.
It can be interrupted by `C-g'.  `dbus-call-method-non-blocking' is obsolete.
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*** Signals can also be sent as unicast messages.
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*** The argument list of `dbus-register-signal' has been extended,
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according to the new match rule types of D-Bus.
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*** `dbus-init-bus' supports private connections.

*** There is a new function `dbus-setenv'.

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** `desktop-path' no longer includes the "." directory.
Desktop files are now located in ~/.emacs.d by default.
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** Dired
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*** `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.
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*** 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
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file at point.
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*** When the region is active, `m' (`dired-mark'), `u' (`dired-unmark'),
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`DEL' (`dired-unmark-backward'), and `d' (`dired-flag-file-deletion')
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mark/unmark/flag all files in the active region.
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*** 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.
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*** `M-=' is no longer bound to `dired-backup-diff' in Dired buffers.
The global binding for `M-=', `count-words-region' is in effect.

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