GNU Emacs NEWS -- history of user-visible changes. Copyright (C) 2010 Free Software Foundation, Inc. See the end of the file for license conditions. Please send Emacs bug reports to bug-gnu-emacs@gnu.org. If possible, use M-x report-emacs-bug. This file is about changes in Emacs version 24. See files NEWS.23, NEWS.22, NEWS.21, NEWS.20, NEWS.19, NEWS.18, and NEWS.1-17 for changes in older Emacs versions. 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. 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. * Installation Changes in Emacs 24.1 --- ** There are 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. * Startup Changes in Emacs 24.1 * Changes in Emacs 24.1 +++ ** Emacs now supports display and editing of bidirectional text. Warning: This is still very much experimental! The existing support is minimal, and when it's turned on (see below), many features are likely to give unexpected results, or break, or even crash! Use at your own risk! See the node "Bidirectional Editing" in the Emacs Manual for some initial documentation. To turn this on in any given buffer, set the buffer-local variable `bidi-display-reordering' to a non-nil value. The default is nil. The buffer-local variable `bidi-paragraph-direction', if non-nil, forces each paragraph in the buffer to have its base direction according to the value of this variable. Possible values are `right-to-left' and `left-to-right'. If the value is nil (the default), Emacs determines the base direction of each paragraph from its text, as specified by the Unicode Bidirectional Algorithm. Reordering of bidirectional text for display in Emacs is a "Full bidirectionality" class implementation of the Unicode Bidirectional Algorithm. ** GTK scroll-bars are now placed on the right by default. Use `set-scroll-bar-mode' to change this. * Editing Changes in Emacs 24.1 * Changes in Specialized Modes and Packages in Emacs 24.1 ** mpc.el: Can use pseudo tags of the form tag1|tag2 as a union of two tags. ** 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 . *** Custom options now start out hidden if at their default values. 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. ** VC and related modes *** vc-dir for Bzr supports viewing shelve contents and shelving snapshots. *** Special markup can be added to log-edit buffers. **** For Bzr, adding an Author: NAME line will add "--author NAME" to the "bzr commit" command. **** For Hg, adding an Author: NAME line will add "--user NAME" to the "hg commit" command. ** Directory local variables can apply to file-less buffers. For example, adding "(diff-mode . ((mode . whitespace)))" to your .dir-locals.el file, will turn on `whitespace-mode' for *vc-diff* buffers. ** s-region.el is now declared obsolete, superceded by shift-select-mode enabled by default in 23.1. ** gdb-mi *** GDB User Interface migrated to GDB Machine Interface and now supports multithread non-stop debugging and debugging of several threads simultaneously. * New Modes and Packages in Emacs 24.1 ** 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. * Incompatible Lisp Changes in Emacs 24.1 * Lisp changes in Emacs 24.1 ** New completion style `substring'. ** Image API *** When the image type is one of listed in `image-animated-types' and the number of sub-images in the image is more then one, then the new function `create-animated-image' creates an animated image where sub-images are displayed successively with the duration defined by `image-animate-max-time' and the delay between sub-images defined by the Graphic Control Extension of the image. * Changes in Emacs 24.1 on non-free operating systems ---------------------------------------------------------------------- This file is part of GNU Emacs. GNU Emacs is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. GNU Emacs is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with GNU Emacs. If not, see . Local variables: mode: outline paragraph-separate: "[ ]*$" end: