** configure now checks for libgif before libungif when searching for
a GIF library.
+** Support for systems without alloca has been removed.
+
+** The `emacstool' utility has been removed.
+
\f
* Changes in Emacs 23.1
+** Emacs now supports using both X displays and ttys in one session.
+You can also use any number of different ttys.
+
+You can test for the presence of this feature in your Lisp code by
+testing for the `multi-tty' feature.
+
+** Emacs comes with a new set of icons for Mac OS X.
+OS-X-style icons (an application icon and a relevant document icon)
+were contributed by Kentaro Ohkouchi.
+Source files for these icons can be found in Emacs.app/Contents/Resources.
+
+** Built-in functions (subr) can now have an interactive specification
+that is not a prompt string. If the `intspec' parameter of a `DEFUN'
+starts with a `(', the string is evaluated as a Lisp form.
+
+** set-file-modes is now interactive and can take the mode value in
+symbolic notation thanks to auxiliary functions.
+
+** split-window-preferred-function specifies whether display-buffer should
+split windows vertically or horizontally.
+
+** Emacsclient has been extended to support opening a new terminal
+frame. Its behavior has been changed to open a new Emacs frame by
+default. Use the -c option to get the old behavior of opening files in
+the currently selected Emacs frame.
+
+** The refcards are now shipped as PDF files.
+
+** Emacs now supports the SVG image format through librsvg2.
+
** If you set find-file-confirm-nonexistent-file to t, then C-x C-f
requires confirmation before opening a non-existent file.
recenter the visited source file. Its value can be a number (for example,
0 for top line, -1 for bottom line), or nil for no recentering.
-** The mode-line display a `@' if the default-directory for the current buffer
+** The mode-line displays a `@' if the default-directory for the current buffer
is on a remote machine, or a hyphen otherwise.
-** The new command balance-window-area balances windows both vertically
+
+** The new command balance-windows-area balances windows both vertically
and horizontally.
** The new command close-display-connection can be used to close a connection
to a remote display, e.g. because the display is about to become unreachable.
+
+** The command shell prompts for the default directory, when it is
+called with a prefix, and the default directory is a remote file name.
+This is because some file name handlers (like ange-ftp) are not able to
+run processes remotely.
+
+** The new command `display-time-world' starts an updating time display
+using several time zones, in a buffer.
\f
* Startup Changes in Emacs 23.1
+** New user option `initial-buffer-choice' specifies what to display
+after starting Emacs: startup screen, *scratch* buffer, visiting a
+file or directory.
+
+** New alias `argv' for `command-line-args-left'
+This is a convenience alias, so that one can write `(pop argv)'
+inside of --eval command line arguments in order to access
+following arguments.
+
+** The abbrev file is no longer read at startup in batch mode.
\f
* Incompatible Editing Changes in Emacs 23.1
\f
* Editing Changes in Emacs 23.1
++++
+** M-q now fills the region if the region is active and
+`transient-mark-mode' is turned on. Otherwise, it fills the current
+paragraph. The new command bound to M-q is `fill-paragraph-or-region'.
+
+** M-$ now checks spelling of the region if the region is active and
+`transient-mark-mode' is turned on. Otherwise, it checks spelling of the
+word at point.
+
+** TAB now indents the region if the region is active and
+`transient-mark-mode' is turned on.
+
+** C-z now invokes `suspend-frame', C-x C-c now invokes
+`save-buffers-kill-terminal'.
+
** New command kill-matching-buffers kills buffers whose name matches a regexp.
** Minibuffer changes:
\f
* New Modes and Packages in Emacs 23.1
-** css-mode to edit Cascading Style Sheets.
-
-** bibtex-style-mode helps you write BibTeX's *.bst files.
+** The package doc-view.el has been added. It supports viewing of PDF,
+PostScript and DVI documents inside an Emacs buffer by converting the
+document to a set of PNG images first. One can also search for a
+regular expression in the document. The commentary of the file explains
+its usage.
-** vera-mode to edit Vera files.
-
-** socks.el (which had been part of W3) is now part of Emacs.
+** A new game called `bubbles' has been added.
** minibuffer-indicate-depth-mode shows the minibuffer depth in the prompt.
\f
* Changes in Specialized Modes and Packages in Emacs 23.1
+** diff-fine-highlight highlights char-level details of changes in a diff hunk.
+** archive-mode has basic support to browse Rar archives.
+** talk.el has been extended for multiple tty support.
+
** compilation-auto-jump-to-first-error tells `compile' to jump to
the first error encountered during compilations.
Only copyright lines with holders matching copyright-names-regexp will be
considered for update.
+** eldoc highlights the function argument under point
+with the face `eldoc-highlight-function-argument'.
+
** VC
-*** VC backends can provide completion of revision names.
-*** VC has some support for Bazaar (bzr).
+*** Clicking on the VC mode-line entry now pops the VC menu.
+
+*** The VC mode-line entry now has a tooltip that explains the VC file status.
-*** VC has some support for Mercurial (hg).
+*** VC now supports applying VC operations to a set of files at a time.
-*** VC has some support for Git.
+This enables VC to work much more effectively with changeset-oriented
+version-control systems such as Subversion, GNU Arch, Mercurial, and
+Bzr. VC will now pass a multiple-file commit to these systems
+as a single changeset.
** sgml-electric-tag-pair-mode lets you simultaneously edit matched tag pairs.
+** The appearance of superscript and subscript in TeX is more customizable.
+See the documentation of the variables: tex-fontify-script,
+tex-font-script-display, tex-suscript-height-ratio, and
+tex-suscript-height-minimum.
+
** BibTeX mode:
*** New `bibtex-entry-format' options `whitespace', `braces', and
When the variable `file-precious-flag' is set, the success of a remote
file copy is checked via the file's checksum.
-** comint-mode uses `start-file-process' now (see Lisp Changes).
+** Miscellaneous programming mode changes
+
+*** The file etc/emacs.py now supports both Python 2 and 3, meaning
+that either version can be used as inferior Python by python.el.
+
+*** The variable `fortran-line-length' can change the fixed-form line-length.
+
+** Miscellaneous
+
+*** comint-mode uses `start-file-process' now (see Lisp Changes).
If `default-directory' is a remote file name, subprocesses are started
on the corresponding remote system.
-** C-x C-q in dired-mode now runs the command wdired-change-to-wdired-mode.
+*** C-x C-q in dired-mode now runs the command wdired-change-to-wdired-mode,
+and C-x C-q in wdired-mode exits it with asking a question about
+saving changes.
+
+*** The new command `eshell/info' runs info in an eshell buffer.
+
\f
* Changes in Emacs 23.1 on non-free operating systems
\f
* Lisp Changes in Emacs 23.1
+** `frame-inherited-parameters' lets new frames inherit parameters from
+the selected frame.
+** New keymap `input-decode-map' overrides like key-translation-map, but
+applies before function-key-map. Also it is terminal-local contrary to
+key-translation-map. Terminal-specific key-sequences are generally added to
+this map rather than to function-key-map now.
+
+** Changes related to multiple tty support.
+
+*** $TERM is now set to `dumb' for subprocesses. If you want to know the
+$TERM inherited by Emacs you will have to look inside initial-environment.
+
+*** $DISPLAY is now dynamically inherited from the frame's `display'.
+
+*** The `window-system' variable has been made frame-local. The new
+`initial-window-system' variable contains the `window-system' value
+for the first frame.
+
+*** You can specify a terminal device (`tty' parameter) and a terminal
+type (`tty-type' parameter) to `make-terminal-frame'.
+
+*** The new function `make-frame-on-tty' allows you to create a new
+frame on another tty device interactively.
+
+*** The function `make-frame-on-display' now works during a tty
+session, and `make-frame-on-tty' works during a graphical session.
+
+*** New functions: `delete-tty', `suspend-tty', `resume-tty'.
+
+*** A new data type for terminals with functions: `get-device-terminal',
+`terminal-parameters', `terminal-parameter', `set-terminal-parameter'.
+
+*** New hooks: `suspend-tty-functions' and `resume-tty-functions'
+are called after a tty frame has been suspended or resumed,
+respectively. The functions are called with the terminal id of the frame
+being suspended/resumed as a parameter.
+
+*** New function: `environment'.
+
+*** New variable: `local-function-key-map'.
+This in addition to the global function-key-map variable that
+already existed. The global variable is not used directly any more;
+instead, the local-function-key-map is initialized so as to inherit from
+function-key-map.
+
+*** `initial-environment' holds the environment inherited from Emacs's parent.
+
+*** The `keyboard-translate-table' variable and the terminal and
+keyboard coding systems have been made terminal-local.
+
+*** In addition to the global function-key-map, Emacs has terminal-local
+local-function-key-map variables, and uses them instead of the
+global keymaps to set up translations and function key sequences
+relevant to a specific terminal device.
+
+
+** You can now also pass the value of the `invisible' property to invisible-p
+to check whether it would cause the text to be invisible. Convenient when
+checking invisibility of text which has no buffer position
+(e.g. in before/after-strings).
+
+** Non-breaking space now acts as whitespace.
+
+++
** In `condition-case', a handler can specify "let the debugger run first".
+++
** The regexp form \(?<num>:<regexp>\) specifies the group number explicitly.
-+++
-** New variable `user-emacs-directory'.
-Use this instead of "~/.emacs.d".
+** New function `window-full-width-p' returns t if a window is as wide
+as its frame.
+
+** The new function `split-string-and-unquote' does (what?)
+
+** The new function `combine-and-quote-strings' does (what?)
-+++
** The new function `image-refresh' refreshes all images associated
with a given image specification.
++++
+** New variable `user-emacs-directory'.
+Use this instead of "~/.emacs.d".
+
+++
** The new function `start-file-process is similar to `start-process',
but obeys file handlers. The file handler is chosen based on
\f
* New Packages for Lisp Programming in Emacs 23.1
+** The new package avl-tree.el deals with the AVL tree data structure.
+
\f
----------------------------------------------------------------------
This file is part of GNU Emacs.