code.delx.au - gnu-emacs/blob - etc/NEWS

   1 GNU Emacs NEWS -- history of user-visible changes.
   2
   3 Copyright (C) 2010 Free Software Foundation, Inc.
   4 See the end of the file for license conditions.
   5
   6 Please send Emacs bug reports to bug-gnu-emacs@gnu.org.
   7 If possible, use M-x report-emacs-bug.
   8
   9 This file is about changes in Emacs version 24.
  10
  11 See files NEWS.23, NEWS.22, NEWS.21, NEWS.20, NEWS.19, NEWS.18,
  12 and NEWS.1-17 for changes in older Emacs versions.
  13
  14 You can narrow news to a specific version by calling `view-emacs-news'
  15 with a prefix argument or by typing C-u C-h C-n.
  16
  17
  18 Temporary note:
  19  +++ indicates that the appropriate manual has already been updated.
  20  --- means no change in the manuals is called for.
  21 When you add a new item, please add it without either +++ or ---
  22 so we will look at it and add it to the manual.
  23
  24 \f
  25 * Installation Changes in Emacs 24.1
  26
  27 ---
  28 ** There are new configure options:
  29 --with-mmdf, --with-mail-unlink, --with-mailhost.
  30 These provide no new functionality, they just remove the need to edit
  31 lib-src/Makefile by hand in order to use the associated features.
  32
  33 \f
  34 * Startup Changes in Emacs 24.1
  35
  36 \f
  37 * Changes in Emacs 24.1
  38
  39 ** auto-mode-case-fold is now enabled by default.
  40
  41 +++
  42 ** Emacs now supports display and editing of bidirectional text.
  43 Warning: This is still very much experimental!  The existing support
  44 is minimal, and when it's turned on (see below), many features are
  45 likely to give unexpected results, or break, or even crash!  Use at
  46 your own risk!
  47
  48 See the node "Bidirectional Editing" in the Emacs Manual for some
  49 initial documentation.
  50
  51 To turn this on in any given buffer, set the buffer-local variable
  52 `bidi-display-reordering' to a non-nil value.  The default is nil.
  53
  54 The buffer-local variable `bidi-paragraph-direction', if non-nil,
  55 forces each paragraph in the buffer to have its base direction
  56 according to the value of this variable.  Possible values are
  57 `right-to-left' and `left-to-right'.  If the value is nil (the
  58 default), Emacs determines the base direction of each paragraph from
  59 its text, as specified by the Unicode Bidirectional Algorithm.
  60
  61 Reordering of bidirectional text for display in Emacs is a "Full
  62 bidirectionality" class implementation of the Unicode Bidirectional
  63 Algorithm.
  64
  65 ** GTK scroll-bars are now placed on the right by default.
  66 Use `set-scroll-bar-mode' to change this.
  67
  68 ** New scrolling commands `scroll-up-command' and `scroll-down-command'
  69 (bound to [next] and [prior]) does not signal errors at top/bottom
  70 of buffer at first key-press (instead moves to top/bottom of buffer).
  71
  72 ** New scrolling commands `scroll-up-line' and `scroll-down-line'
  73 scroll a line instead of full screen.
  74
  75 \f
  76 * Editing Changes in Emacs 24.1
  77
  78 \f
  79 * Changes in Specialized Modes and Packages in Emacs 24.1
  80
  81 ** mpc.el: Can use pseudo tags of the form tag1|tag2 as a union of two tags.
  82 ** Customize
  83
  84 *** Customize buffers now contain a search field.
  85 The search is performed using `customize-apropos'.
  86 To turn off the search field, set custom-search-field to nil .
  87
  88 *** Custom options now start out hidden if at their default values.
  89 Use the arrow to the left of the option name to toggle visibility.
  90
  91 *** custom-buffer-sort-alphabetically now defaults to t.
  92
  93 *** The color widget now has a "Choose" button, which allows you to
  94 choose a color via list-colors-display.
  95
  96 ** VC and related modes
  97
  98 *** vc-dir for Bzr supports viewing shelve contents and shelving snapshots.
  99
 100 *** Special markup can be added to log-edit buffers.
 101
 102 **** For Bzr, adding an
 103 Author: NAME
 104 line will add "--author NAME" to the "bzr commit" command.
 105
 106 **** For Hg, adding an
 107 Author: NAME
 108 line will add "--user NAME" to the "hg commit" command.
 109
 110 ** Directory local variables can apply to file-less buffers.
 111 For example, adding "(diff-mode . ((mode . whitespace)))" to your
 112 .dir-locals.el file, will turn on `whitespace-mode' for *vc-diff*
 113 buffers.
 114
 115 ** s-region.el is now declared obsolete, superceded by shift-select-mode
 116 enabled by default in 23.1.
 117
 118 ** gdb-mi
 119
 120 *** GDB User Interface migrated to GDB Machine Interface and now
 121 supports multithread non-stop debugging and debugging of several
 122 threads simultaneously.
 123
 124 \f
 125 * New Modes and Packages in Emacs 24.1
 126
 127 ** secrets.el is an implementation of the Secret Service API, an
 128 interface to password managers like GNOME Keyring or KDE Wallet.  The
 129 Secret Service API requires D-Bus for communication.
 130
 131 \f
 132 * Incompatible Lisp Changes in Emacs 24.1
 133
 134 \f
 135 * Lisp changes in Emacs 24.1
 136
 137 ** New completion style `substring'.
 138
 139 ** Image API
 140
 141 *** When the image type is one of listed in `image-animated-types'
 142 and the number of sub-images in the image is more than one, then the
 143 new function `create-animated-image' creates an animated image where
 144 sub-images are displayed successively with the duration defined by
 145 `image-animate-max-time' and the delay between sub-images defined
 146 by the Graphic Control Extension of the image.
 147
 148 *** `image-extension-data' is renamed to `image-metadata'.
 149
 150 ** Progress reporters can now "spin".
 151 The MIN-VALUE and MAX-VALUE arguments of `make-progress-reporter' can
 152 now be nil, or omitted.  This makes a "non-numeric" reporter.  Each
 153 time you call `progress-reporter-update' on that progress reporter,
 154 with a nil or omitted VALUE argument, the reporter message is
 155 displayed with a "spinning bar".
 156
 157 \f
 158 * Changes in Emacs 24.1 on non-free operating systems
 159
 160 \f
 161 ----------------------------------------------------------------------
 162 This file is part of GNU Emacs.
 163
 164 GNU Emacs is free software: you can redistribute it and/or modify
 165 it under the terms of the GNU General Public License as published by
 166 the Free Software Foundation, either version 3 of the License, or
 167 (at your option) any later version.
 168
 169 GNU Emacs is distributed in the hope that it will be useful,
 170 but WITHOUT ANY WARRANTY; without even the implied warranty of
 171 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 172 GNU General Public License for more details.
 173
 174 You should have received a copy of the GNU General Public License
 175 along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
 176
 177 \f
 178 Local variables:
 179 mode: outline
 180 paragraph-separate: "[  \f]*$"
 181 end: