Mercurial > hg > xemacs-beta
annotate etc/NEWS @ 5797:a1808d52a34a
If the position of a window's cached point is deleted, use buffer point instead
src/ChangeLog addition:
2014-06-17 Aidan Kehoe <kehoea@parhasard.net>
* extents.h:
* window.c:
* window.c (unshow_buffer):
* window.c (Fset_window_buffer):
Use extents, rather than markers, for the window buffer point
cache, so that when the text containing that window buffer point
is deleted, the window display code uses the buffer's actual point
instead of the position that the marker had been moved to.
Fixes Michael Heinrich's problem of
http://mid.gmane.org/6zr42uxtf5.fsf@elektra.science-computing.de ,
introduced by Ben's patch of
https://bitbucket.org/xemacs/xemacs/commits/047d37eb70d70f43803 .
| author | Aidan Kehoe <kehoea@parhasard.net> |
|---|---|
| date | Tue, 17 Jun 2014 20:55:45 +0100 |
| parents | 5d2981eee77e |
| children |
| rev | line source |
|---|---|
| 428 | 1 -*- mode:outline -*- |
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2 |
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3 Copyright (C) 1998-2000 Hrvoje Niksic |
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4 Copyright (C) 2000-2001 Michael Sperber |
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5 Copyright (C) 2001 Ben Wing |
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6 Copyright (C) 2001 Didier Verna |
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7 Copyright (C) 2004 Stephen Turnbull |
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8 Copyright (C) 2005-2006 Aidan Kehoe |
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9 |
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10 This file is part of XEmacs. |
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11 |
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12 XEmacs is free software: you can redistribute it and/or modify it |
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13 under the terms of the GNU General Public License as published by the |
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14 Free Software Foundation, either version 3 of the License, or (at your |
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15 option) any later version. |
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16 |
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17 XEmacs is distributed in the hope that it will be useful, but WITHOUT |
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18 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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19 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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20 for more details. |
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21 |
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22 You should have received a copy of the GNU General Public License |
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23 along with XEmacs. If not, see <http://www.gnu.org/licenses/>. |
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24 |
| 428 | 25 |
| 26 * Introduction | |
| 27 ============== | |
| 28 | |
| 2291 | 29 This file presents the changes in recent XEmacs versions. Primarily |
| 30 it documents user-visible (interface) changes, but also includes | |
| 31 internal changes of possible interest to users. When describing new | |
| 32 features, we also document ways of reverting to the old behavior, | |
| 33 where applicable. If you dislike a recent change in how XEmacs | |
| 34 behaves, you may find a remedy in this file. | |
| 428 | 35 |
| 2291 | 36 Use `C-c C-f' to move to the next heading at the same level, and |
| 37 `C-c C-b' to move to the previous heading at this level. `C-h m' gives | |
| 38 help on Outline mode. The menubar provides more commands. | |
| 428 | 39 |
| 40 Users who would like to know which capabilities have been introduced | |
| 41 in each release should look at the appropriate section of this file. | |
| 42 Starting with version 20.0, XEmacs includes ChangeLogs, which can be | |
| 43 consulted for a more detailed list of changes. | |
| 44 | |
| 2291 | 45 N.B. The term "GNU Emacs" refers to any release of Emacs from the |
| 46 Free Software Foundation's GNU Project starting with Version 19. | |
| 47 The term "XEmacs" refers to this program or sometimes to its | |
| 48 predecessors "Era" and "Lucid Emacs". The predecessor of all these | |
| 49 programs is called "Emacs 18". When no particular version is | |
| 50 implied, "Emacs" will be used. | |
| 51 | |
| 52 | |
| 53 * Changes in XEmacs 21.5 | |
| 54 ======================== | |
| 55 | |
| 56 ** Summary of user-visible changes: | |
| 57 | |
| 58 -- Bignums have been implemented. | |
| 59 -- Windows users have benefit of the full Win32 Unicode API. | |
| 60 -- (in process) Xft provides antialiased fonts on X11. | |
| 2681 | 61 -- "XEmacs" used as X11 application class |
| 2291 | 62 |
| 63 ** Bignum implementation. | |
| 64 | |
| 65 Integer computations no longer overflow, rational arithmetic "just | |
| 66 works", and very precise floating point calculation is available. | |
| 67 This also means that large buffers (over 2^30 = 1GB) can be | |
| 68 manipulated. | |
| 428 | 69 |
| 2681 | 70 ** "XEmacs" used as X11 application class |
| 71 | |
| 72 Previously, XEmacs checked the X11 resource database for resources starting | |
| 2757 | 73 with XEmacs, and used "XEmacs" as its application class if any existed; |
| 74 otherwise it used "Emacs", for backward compatibility. Because of | |
| 75 divergence between the resources that GNU Emacs and XEmacs use, we've | |
| 76 changed this. If you don't have the time to migrate your resource DB right | |
| 77 now, set USE_EMACS_AS_DEFAULT_APPLICATION_CLASS in your environment before | |
| 78 starting XEmacs, for the old behavior. This workaround will go away in the | |
| 79 course of the next major release, though, so you will have to migrate your | |
| 80 resources at some point. | |
| 2681 | 81 |
| 428 | 82 |
| 2862 | 83 * Lisp and internal changes in XEmacs 21.5 |
| 84 ========================================== | |
| 85 | |
| 86 ** The ALLOW-NON-ASCII argument to event-to-character is not used. | |
| 87 | |
| 88 While it is still accepted, for compatibilty with older code, | |
| 89 event-to-character no longer takes note of this argument, since the specific | |
| 90 type of mapping between characters and keysyms that it affected is no longer | |
| 91 in place. | |
| 92 | |
| 3674 | 93 ** The set-charset-registry function is deprecated. |
| 94 | |
| 95 set-charset-registries replaces it; this function takes a vector of X11 | |
| 96 CHARSET_REGISTRY and CHARSET_ENCODINGs, and doesn't support regexp or XLFD | |
| 97 wildcarding. It improves lookup performance (especially failures) for those | |
| 98 X servers with large numbers of fonts. | |
| 99 | |
| 100 ** define-specifier-tag now has an optional CHARSET-PREDICATE parameter. | |
| 101 | |
| 102 This allows you to create specifier tags that match over Mule character sets | |
| 103 when instantiating fonts, finally making it possible to explicitly set a | |
| 104 font for a charset in given face with set-face-font. | |
| 105 | |
| 2862 | 106 |
| 464 | 107 * Changes in XEmacs 21.4 |
| 428 | 108 ======================== |
| 109 | |
| 479 | 110 ** Summary of user-visible changes: |
| 111 | |
| 112 -- The delete key now deletes forward by default. | |
| 113 -- Shifted motion keys now select text by default. | |
| 114 -- You can now build XEmacs with support for GTK+ widget set. | |
| 115 -- ~/.xemacs/init.el is now the preferred location for the init file. | |
| 116 - XEmacs now supports a `~/.xemacs/init.el' startup file. | |
| 117 - Custom file will move to ~/.xemacs/custom.el. | |
| 118 -- Much-improved sample init.el, showing how to use many useful features. | |
| 119 -- XEmacs support for menu accelerators has been much improved. | |
| 120 -- Default menubar improvements. | |
| 121 - Default menubar has many new commands and better organization. | |
| 122 - The font-menu is now available under MS Windows. | |
| 123 -- Dialog box improvements, including a real file dialog box. | |
| 124 - XEmacs now has a proper file dialog box under MS Windows (and GTK)! | |
| 125 - The old clunky file dialog box is improved. | |
| 126 - Keyboard traversal now works correctly in MS Windows dialog boxes. | |
| 127 - There is a Search dialog box available from Edit->Find... | |
| 128 -- New buffer tabs. | |
| 129 -- There is a new MS Windows installer, netinstall, ported from Cygwin. | |
| 130 -- The subprocess quote-handling mechanism under Windows is much improved. | |
| 131 -- Printing support now available under MS Windows. | |
| 132 -- Selection improvements. | |
| 133 - Kill and yank now interact with the clipboard under Windows. | |
| 134 - MS Windows support for selection is now much more robust. | |
| 135 - Motif selection support is now more correct (but slower). | |
| 136 -- Mail spool locking now works correctly. | |
| 137 -- International support changes. | |
| 138 - The default coding-priority-list is now safer. | |
| 139 - International keysyms are now supported under X. | |
| 140 - MS Windows 1251 code page now supported. | |
| 141 - Czech, Thai, Cyrillic-KOI8, Vietnamese, Ethiopic now supported. | |
| 142 - Proper support for words in Latin 3 and Latin 4. | |
| 143 -- Help buffers contain hyperlinks, and other changes. | |
| 144 -- The modeline's text is now scrollable. | |
| 145 -- The mouse wheel under MS Windows now functions correctly. | |
| 146 -- Interactive searching and matching case improvements. | |
| 147 - Incremental search will now highlight all visible matches. | |
| 148 - Interactive searches always respect uppercase characters. | |
| 149 -- Rectangle functions rewritten to avoid inserting extra spaces. | |
| 150 -- New command `kill-entire-line' that always kills the entire line. | |
| 151 -- Default values correctly stored in minibuffer histories. | |
| 152 -- You can now create "indirect buffers", like in GNU Emacs. | |
| 153 -- Pixel-based scrolling has been implemented. | |
| 154 -- Operation progress can be displayed using graphical widgets. | |
| 155 -- User names following a tilde can now be completed at file name prompts. | |
| 156 -- XEmacs can now play sound using Enlightenment Sound Daemon (ESD). | |
| 157 -- X-Face support is now available under MS Windows. | |
| 158 -- The PostgreSQL Relational Database Management System is now supported. | |
| 159 -- Indentation no longer indents comments that begin at column zero. | |
| 160 -- Face and variable settings can have comments in Customize. | |
| 161 -- New locations for early package hierarchies. | |
| 162 -- The `auto-save' library has been greatly improved. | |
| 163 -- New variable `mswindows-alt-by-itself-activates-menu'. | |
| 164 -- Other init-file-related changes. | |
| 165 - Init file in your home directory may be called `.emacs.el'. | |
| 166 - New command-line switches -user-init-file and -user-init-directory. | |
| 167 -- Etags changes. | |
| 168 - In DOS, etags looks for file.cgz if it cannot find file.c. | |
| 169 - New option --ignore-case-regex is an alternative to --regex. | |
| 170 - New option --declarations, for C-type languages. | |
| 171 - In C++, tags are created for "operator". | |
| 172 - Ada now supported. | |
| 173 - In Fortran, procedure is no longer tagged. | |
| 174 - In Java, tags are created for "interface". | |
| 175 - In Lisp, def-type constructs are now tagged. | |
| 176 - In Perl, the --globals option tags global variables. | |
| 177 - Python now supported. | |
| 178 - New file extensions recognized: .ss, .pdb, .psw. | |
| 179 | |
| 440 | 180 ** The delete key now deletes forward by default. |
| 428 | 181 |
| 440 | 182 This is regulated by the variable `delete-key-deletes-forward', which |
| 183 now defaults to t. `delete-key-deletes-forward' takes effect only on | |
| 184 the systems that offer both a backspace and a delete key. If set to | |
| 185 nil, the key labeled "Delete" will always delete backward. If set to | |
| 186 non-nil, the "Delete" key will delete forward, except on keyboards | |
| 479 | 187 where a "Backspace" key is not provided (e.g. old DEC keyboards). |
| 428 | 188 |
| 189 Unless our implementation has bugs, the only reason why you would want | |
| 190 to set `delete-key-deletes-forward' to nil is if you want to use the | |
| 191 Delete key to delete backwards, despite the presence (according to | |
| 192 Xlib) of a BackSpace key on the keyboard. | |
| 193 | |
| 479 | 194 ** Shifted motion keys now select text by default. |
| 195 | |
| 196 You can turn this off by setting `shifted-motion-keys-select-region' | |
| 197 to nil. This works based off of particular keys, not particular | |
| 198 commands: Thus, the arrow keys will normally trigger selection when | |
| 199 the Shift key is held down regardless of their bindings, and non-arrow | |
| 200 keys with the same bindings (e.g. C-f) will not work this way. You | |
| 201 can control which keys trigger shifted motion using | |
| 202 `motion-keys-for-shifted-motion'. See also | |
| 203 `unshifted-motion-keys-deselect-region'. | |
| 204 | |
| 464 | 205 ** You can now build XEmacs with support for GTK+ widget set. |
| 206 | |
| 207 XEmacs built that way uses GTK+ to draw menubars, scrollbars, and | |
| 208 other GUI components, as well GDK for drawing text, choosing fonts, | |
| 209 allocating colors, etc. Additionally, GTK-XEmacs supports Lisp | |
| 210 functions for writing your own GTK programs in Emacs Lisp! | |
| 211 | |
| 212 To use this, build XEmacs with the `--with-gtk' configure flag. (Of | |
| 213 course, you'll need to have the GTK+ libraries and header files on the | |
| 214 system.) Gnome widgets and functionality are supported where | |
| 215 available, and can be turned off. | |
| 216 | |
| 479 | 217 ** ~/.xemacs/init.el is now the preferred location for the init file. |
| 218 | |
| 219 *** XEmacs now supports a `~/.xemacs/init.el' startup file. | |
| 220 If it exists, XEmacs will prefer it over `.emacs' and `.emacs.el'. | |
| 221 The file may be byte-compiled as `~/.xemacs/init.elc'. | |
| 222 | |
| 223 If present, the `~/.xemacs/' directory may contain startup files for | |
| 224 XEmacs packages that support it. | |
| 225 | |
| 226 The first time you start up XEmacs, it will ask you if you would like | |
| 227 to migrate your `.emacs' to the new location. (Your custom settings | |
| 228 will also be moved, to `~/.xemacs/custom.el' -- see below.) If so, you | |
| 229 will also be asked whether you would like to create a compatibility | |
| 230 `.emacs' for backward compatibility with previous versions of XEmacs | |
| 231 and with GNU Emacs. (This compatibility `.emacs' simply loads the new | |
| 232 init and custom files.) Doing this is generally a good idea -- new | |
| 233 versions of XEmacs will prefer `~/.xemacs/init.el' over `~/.emacs' in | |
| 234 any case. | |
| 235 | |
| 236 You can manually migrate at any time with `migrate-user-init-file', | |
| 237 and undo any migration with `unmigrate-user-init-file'. The function | |
| 238 `create-compatibility-dot-emacs' also lets you manually create a | |
| 239 compatibility `.emacs'. | |
| 240 | |
| 241 NOTE: Under MS Windows, your home directory (i.e. the directory named | |
| 242 `~') is specified by the HOME environment variable, and defaults to | |
| 243 C:\. To set this variable, modify AUTOEXEC.BAT under Windows 95/98, | |
| 244 or select Control Panel->System->Advanced->Environment Variables... | |
| 245 under Windows NT/2000. | |
| 246 | |
| 247 *** Custom file will move to ~/.xemacs/custom.el. | |
| 248 | |
| 249 Whereas customize settings were formerly stored in the regular init | |
| 250 file, XEmacs now prefers them to be in a separate file | |
| 251 `~/.xemacs/custom.el', completely under automatic control. This | |
| 252 change goes with the migration of the init file, and XEmacs offers | |
| 253 automatic migration upon startup. | |
| 254 | |
| 255 ** Much-improved sample init.el, showing how to use many useful features. | |
| 256 | |
| 257 The sample init file, located in the `etc/' directory of the XEmacs | |
| 258 installation, has been renamed from `sample.emacs' to `sample.init.el', | |
| 259 and pretty much rewritten from scratch. (You can view it by selecting | |
| 260 the menu item Help->Samples->Sample init.el.) Many of the most-useful | |
| 261 optional features in XEmacs have been enabled, and other features that | |
| 262 are useful but may be annoying to some are present but commented out. | |
| 263 There is also extensive documentation on how to add your own | |
| 264 improvements to the init file and where to find more documentation | |
| 265 elsewhere in XEmacs. The file has been specifically designed so that | |
| 266 most people can simply make it their own init file by copying it to | |
| 267 ~/.xemacs/init.el, and they will be satisfied with the results. | |
| 268 | |
| 269 ** XEmacs support for menu accelerators has been much improved. | |
| 442 | 270 |
| 479 | 271 It now works properly under MS Windows, for example. To enable |
| 272 accelerators, set `menu-accelerator-enabled' to `menu-force'. Menus | |
| 273 now have accelerators by default, currently on the first letter of the | |
| 274 menu item unless another letter was indicated as the accelerator using | |
| 275 %_ in the menu string. These %_ specifications are automatically | |
| 276 removed when displaying the menu item, and are handled correctly in | |
| 277 functions such as `normalize-menu-item-name'. Some auto-generated | |
| 278 menus will have accelerators added dynamically, using numbers 1-9 and | |
| 279 letters; to add this feature yourself, use the Lisp command | |
| 280 `submenu-generate-accelerator-spec' in a menu filter. The feature | |
| 281 `menu-accelerator-support' has been added so that packages can check | |
| 282 whether this support exists. | |
| 283 | |
| 284 ** Default menubar improvements. | |
| 285 | |
| 286 *** Default menubar has many new commands and better organization. | |
| 287 | |
| 288 The default menubar has been extensively reorganized. Many more | |
| 289 commands are available, and they are more logically organized. The | |
| 290 Options menu, in particular, has been significantly expanded, and almost | |
| 291 everything on the new Cmds menu is new. (Much of the useful | |
| 292 functionality from the `big-menubar' package has been imported.) | |
| 293 | |
| 294 *** The font-menu is now available under MS Windows. | |
| 295 | |
| 296 ** Dialog box improvements, including a real file dialog box. | |
| 297 | |
| 298 *** XEmacs now has a proper file dialog box under MS Windows (and GTK)! | |
| 299 This will appear whenever you select a menu item that requires a file | |
| 300 as an argument. | |
| 301 | |
| 302 *** The old clunky file dialog box is improved. | |
| 303 The in-buffer file dialog box (visible on non-MS-Windows, non-GTK | |
| 304 systems) is still clunky but has had many improvements to make it work | |
| 305 significantly better. | |
| 306 | |
| 307 *** Keyboard traversal now works correctly in MS Windows dialog boxes. | |
| 308 | |
| 309 *** There is a Search dialog box available from Edit->Find... | |
| 310 However, it's very experimental and needs a lot of work. | |
| 311 | |
| 312 ** New buffer tabs. | |
| 313 | |
| 314 You can now use buffer tabs to switch between buffers. | |
| 315 | |
| 316 The tabs are located between the toolbar and the uppermost window, in | |
| 317 a location called the "gutter". If you dislike the buffer tabs, you can | |
| 318 disable them using the menu item `Options->Display->Buffers Tab Visible' | |
| 319 by customizing `gutter-buffers-tab-visible-p', or by placing this in | |
| 320 your .xemacs/init.el: | |
| 321 | |
| 322 (custom-set-variables '(gutter-buffers-tab-visible-p nil)) | |
| 323 | |
| 324 You can change the location of the gutter using the menu item | |
| 325 `Options->Display->Default Gutter Location' or with (e.g.) | |
| 326 | |
| 327 (custom-set-variables '(default-gutter-position 'left)) | |
| 328 | |
| 329 However, currently only MS Windows supports tab widgets with | |
| 330 orientations other than vertical, and it doesn't currently support | |
| 331 gutters on the bottom of the frame. | |
| 332 | |
| 333 ** There is a new MS Windows installer, netinstall, ported from Cygwin. | |
| 334 | |
| 335 Nearly complete automation of the XEmacs install process from | |
| 336 ftp.xemacs.org. Includes selection of Lisp packages to install, etc. | |
| 442 | 337 |
| 479 | 338 ** The subprocess quote-handling mechanism under Windows is much improved. |
| 339 | |
| 340 Specifically, the quote-handling mechanism has been completely rewritten, | |
| 341 and you should now be able to use single or double quotes to quote arguments | |
| 342 just like under Unix, and expect to get correct results regardless of the | |
| 343 shell you are using (e.g. CMD.EXE, bash from Cygwin, etc.). For example, | |
| 344 the following command: | |
| 345 | |
| 346 M-x grep '<<<<<<<' *.c | |
| 347 | |
| 348 should work as intended. | |
| 349 | |
| 350 ** Printing support now available under MS Windows. | |
| 351 | |
| 352 The File->Print... menu item pretty-prints using the standard MS | |
| 353 Windows printing facilities. Unfortunately it's still rather | |
| 354 experimental. There is a separate `msprinter' device tag for MS | |
| 355 Windows printers, and so you can control the way that faces appear on | |
| 356 the printer by using this tag to specify device-specific face | |
| 357 settings. | |
| 358 | |
| 359 ** Selection improvements. | |
| 360 | |
| 361 *** Kill and yank now interact with the clipboard under Windows. | |
| 464 | 362 |
| 479 | 363 This was done by changing the default value of `interprogram-cut-function' |
| 364 and `interprogram-paste-function'. You can get the old behavior by | |
| 365 setting these to nil, and there is an option on the options menu to do | |
| 366 this. | |
| 367 | |
| 368 *** MS Windows support for selection is now much more robust. | |
| 369 | |
| 370 Generally selection should now do what you would expect under | |
| 371 MS Windows: the middle mouse button will paste your current selection | |
| 372 or the clipboard; conversions from different types of selection to the | |
| 373 clipboard can be made; the kill-ring and friends will be updated as | |
| 374 per X. | |
| 375 | |
| 376 The only thing selection doesn't do is set the clipboard automatically | |
| 377 as this would break the MS Windows model. If you want this behavior | |
| 378 then set `selection-sets-clipboard' to t. | |
| 379 | |
| 380 *** Motif selection support is now more correct (but slower). | |
| 381 | |
| 382 Changes have been made to allow correct operation of cut/copy/paste | |
| 383 operations between native widgets and XEmacs buffers. However, this | |
| 384 can lead to a lot of X traffic which slows down the performance of | |
| 385 `C-k'. If you want the old behaviour then set | |
| 386 `x-selection-strict-motif-ownership' to nil. | |
| 387 | |
| 388 ** Mail spool locking now works correctly. | |
| 464 | 389 |
| 479 | 390 XEmacs has always come with a little auxiliary program, movemail, |
| 391 which moves mail out of the system's spool area into user storage. To | |
| 392 coordinate between XEmacs, the mail delivery agent, and other mail | |
| 393 user agents, movemail needs to properly lock the spool file before | |
| 394 moving it. Movemail now correctly respects the --mail-locking option | |
| 395 to configure. Moreover, movemail's locking behavior can be specified | |
| 396 at run-time, via a new command-line option -m to movemail, or through | |
| 397 the environment variable EMACSLOCKMETHOD. | |
| 398 | |
| 399 When installing XEmacs, make sure you configure it according to your | |
| 400 environment's mail spool locking conventions. When you're using a | |
| 401 binary kit, set the `mail-lock-method' variable at startup, or the | |
| 402 EMACSLOCKMETHOD environment variable. | |
| 403 | |
| 404 ** International support changes. | |
| 405 | |
| 406 *** The default coding-priority-list is now safer. | |
| 407 | |
| 408 This means that if you have no language environment set, Mule no | |
| 409 longer automatically recognizes ISO 2022 escapes in your files. This | |
| 410 makes editing binary files safe. | |
| 411 | |
| 412 *** International keysyms are now supported under X. | |
| 413 | |
| 414 This means that XEmacs running under Mule will automatically recognize | |
| 415 the keysym `scaron' to be the lower-case `s' with caron in the Latin 2 | |
| 416 character set. (Specifically, it will bind the keysym to | |
| 417 `self-insert' and augment its `ascii-character' property.) This is | |
| 418 very useful with XFree under European locales as shipped by recent | |
| 419 Linux distributions. If XEmacs is compiled without Mule support, the | |
| 420 feature still works, but it is unaware of different character sets -- | |
| 421 it unconditionally sets the `ascii-character' property to values in | |
| 422 the [160, 256) range. | |
| 442 | 423 |
| 479 | 424 *** MS Windows 1251 code page now supported. |
| 425 | |
| 426 It's available as coding system `windows-1251'. | |
| 427 | |
| 428 *** Czech, Thai, Cyrillic-KOI8, Vietnamese, Ethiopic now supported. | |
| 429 | |
| 430 *** Proper support for words in Latin 3 and Latin 4. | |
| 431 | |
| 432 The appropriate characters in Latin 3 and Latin 4 character sets are | |
| 433 correctly defined as words. | |
| 434 | |
| 435 ** Help buffers contain hyperlinks, and other changes. | |
| 436 | |
| 437 The help buffers created by C-h commands now contain hyperlinks to | |
| 438 other commands, functions and variables mentioned in the documentation. | |
| 439 Use button2 to follow a link. Use button3 to bring up a context menu | |
| 440 that lets you follow the link, find the source for the item, do a tag | |
| 441 search, etc. The buffers are also syntax-highlighted. | |
| 442 | |
| 443 Help functions (e.g. `C-h f') now know how to print macro argument | |
| 444 lists. If your macro definition included an argument list for the sake | |
| 445 of help output, you no longer need to do that. | |
| 446 | |
| 447 ** The modeline's text is now scrollable. | |
| 448 | |
| 449 This is controlled by the variable `modeline-scrolling-method', which | |
| 450 you need to set to a non-nil value. You can also choose scrolling | |
| 451 types; see the docstring of `modeline-scrolling-method' for more | |
| 452 information. | |
| 453 | |
| 454 ** The mouse wheel under MS Windows now functions correctly. | |
| 455 | |
| 456 It scrolls the XEmacs window under the pointer, not the selected | |
| 457 window. | |
| 442 | 458 |
| 428 | 459 ** Interactive searching and matching case improvements. |
| 460 | |
| 479 | 461 *** Incremental search will now highlight all visible matches. |
| 462 | |
| 463 This makes it easier to anticipate where consecutive C-s or C-r will | |
| 464 place the point. If you want to disable the feature, set | |
| 465 `isearch-highlight-all-matches' to nil. | |
| 466 | |
| 467 *** Interactive searches always respect uppercase characters. | |
| 468 | |
| 469 Case sensitiveness in searching operations is normally controlled | |
| 470 by the variable `case-fold-search' (if non-nil, case is ignored while | |
| 428 | 471 searching). This mechanism has now been slightly improved for |
| 472 interactive searches: if the search string (or regexp) contains | |
| 473 uppercase characters, the searching is forced to be case-sensitive, | |
| 474 `case-fold-search'. | |
| 475 | |
| 476 The new behavior affects all functions performing interactive | |
| 477 searches, like `zap-to-char', `list-matching-lines', `tags-search' | |
| 478 etc. The incremental search facility has always behaved that way. | |
| 479 | |
| 479 | 480 ** Rectangle functions rewritten to avoid inserting extra spaces. |
| 442 | 481 |
| 479 | 482 The rectangle functions have been almost completely rewritten in |
| 428 | 483 order to avoid inserting undesirable spaces, notably at the end of |
| 484 lines. Two typical examples of the old behavior were | |
| 485 `string-rectangle', which filled all lines up to the right side of the | |
| 486 rectangle, and `clear-rectangle', which filled even empty lines up to | |
| 487 the left side. All functions have been rewritten to avoid inserting | |
| 488 unwanted spaces, and an optional prefix now allows them to behave the | |
| 489 old way. | |
| 490 | |
| 442 | 491 Also, the behavior of `string-rectangle' is now compliant with |
| 492 `pending-delete-mode': if this mode is active, then the string | |
| 493 replaces the region rectangle. Otherwise, the command does not delete | |
| 494 or overwrite any existing text. For those who want that feature but do | |
| 495 not use pending-delete-mode, a new function, `replace-rectangle', is | |
| 686 | 496 available, and bound to `C-x r p'. |
| 442 | 497 |
| 428 | 498 As a side effect, the FORCE argument to `move-to-column' now |
| 499 understands the special value `coerce', which means that the line | |
| 500 should not be filled if it is too short to reach the desired column. | |
| 501 | |
| 479 | 502 ** New command `kill-entire-line' that always kills the entire line. |
| 503 | |
| 504 This kills the entire line at point, regardless of whether the point | |
| 505 is at the beginning of line, and regardless of the setting of | |
| 506 `kill-whole-line'. | |
| 507 | |
| 508 ** Default values correctly stored in minibuffer histories. | |
| 428 | 509 |
| 479 | 510 When you press RET at a minibuffer prompt that provides a default |
| 511 value, the value is stored in history instead of an empty line. Also, | |
| 512 you can now edit the default value by pressing the down arrow, | |
| 513 accessing the logical "future" value. Not all minibuffer prompts have | |
| 514 yet been converted to support this feature. | |
| 428 | 515 |
| 479 | 516 ** You can now create "indirect buffers", like in GNU Emacs. |
| 517 | |
| 518 An indirect buffer shares its text with another buffer ("base | |
| 519 buffer"), but has its own major mode, local variables, extents, and | |
| 520 narrowing. An indirect buffer has a name of its own, distinct from | |
| 521 those of the base buffer and all other buffers. An indirect buffer | |
| 522 cannot itself be visiting a file (though its base buffer can be). | |
| 523 The base buffer cannot itself be indirect. | |
| 428 | 524 |
| 525 Use (make-indirect-buffer BASE-BUFFER NAME) to make an indirect buffer | |
| 526 named NAME whose base is BASE-BUFFER. If BASE-BUFFER is itself an | |
| 527 indirect buffer, its base buffer is used as the base for the new | |
| 528 buffer. | |
| 529 | |
| 530 You can make an indirect buffer current, or switch to it in a window, | |
| 531 just as you would a non-indirect buffer. | |
| 532 | |
| 533 The function `buffer-base-buffer' returns a buffer's base buffer or | |
| 534 nil, if given an ordinary (non-indirect) buffer. The function | |
| 535 `buffer-indirect-children' returns a list of the indirect children of | |
| 536 a base buffer. | |
| 537 | |
| 479 | 538 ** Pixel-based scrolling has been implemented. |
| 539 By default this will attempt to scroll in increments equal to the | |
| 540 height of the default face. Set `window-pixel-scroll-increment' to | |
| 541 modify this behavior. | |
| 542 | |
| 543 ** Operation progress can be displayed using graphical widgets. | |
| 544 See `progress-feedback' for details. This support has been switched | |
| 545 on by default for font-lock and some web browsing functions. If you | |
| 546 do not like this behavior, set `progress-feedback-use-echo-area' to | |
| 547 nil. | |
| 548 | |
| 549 ** User names following a tilde can now be completed at file name prompts. | |
| 550 e.g. `C-x C-f ~hni<TAB>' will complete to `~hniksic/'. To make this | |
| 551 operation faster, a cache of user names is maintained internally. | |
| 428 | 552 |
| 553 The new primitives available for this purpose are functions named | |
| 554 `user-name-completion' and `user-name-all-completions'. | |
| 555 | |
| 556 ** XEmacs can now play sound using Enlightenment Sound Daemon (ESD). | |
| 557 It will try NAS first, then ESD, then playing native sound directly. | |
| 558 | |
| 479 | 559 ** X-Face support is now available under MS Windows. |
| 560 If an X-Face library built under MS Windows is available then XEmacs | |
| 428 | 561 will use this at build time. |
| 562 | |
| 479 | 563 ** The PostgreSQL Relational Database Management System is now supported. |
| 564 It is now possible to build XEmacs so that the programming interface | |
| 565 to the PostgreSQL RDBMS (libpq) is available in XEmacs Lisp. | |
| 566 Supported versions of PostgreSQL are 6.5.3 (earlier versions may work, | |
| 567 but have not been tested) and 7.0-beta1. | |
| 438 | 568 |
| 464 | 569 ** Indentation no longer indents comments that begin at column zero. |
| 570 This makes it easy to deal with commented out regions of code. | |
| 571 | |
| 479 | 572 ** Face and variable settings can have comments in Customize. |
| 573 Customize now supports adding comments about your face and variable | |
| 574 settings using a new menu entry. Comments for variables can also be | |
| 575 assigned by calling `customize-set-(value|variable)' with a prefix | |
| 576 argument. | |
| 577 | |
| 578 ** New locations for early package hierarchies. | |
| 579 XEmacs now locates the early package hierarchies at | |
| 580 ~/.xemacs/mule-packages/ and ~/.xemacs/xemacs-packages/. Previously, | |
| 581 the early packages were located in ~/.xemacs/. | |
| 464 | 582 |
| 479 | 583 ** The `auto-save' library has been greatly improved. |
| 584 (This lets you group all your auto-save files into one directory, and | |
| 585 is provided standardly with XEmacs. See `etc/sample.init.el', | |
| 586 available on the Help menu, for more info on how to set it up.) | |
| 587 Specifically, it now works under MS Windows, and it uses a completely | |
| 588 reversible encoding (basically quoted-printable), so that all | |
| 589 filenames (as well as non-filename buffers) are successfully handled | |
| 590 regardless of any special characters in their names. | |
| 464 | 591 |
| 479 | 592 ** New variable `mswindows-alt-by-itself-activates-menu'. |
| 593 If you set this variable to nil then pressing and releasing the Alt | |
| 594 key under MS Windows will no longer activate the menubar. The default | |
| 595 is t. This is not to be confused with `menu-accelerator-enabled', | |
| 596 which enables the use of Alt+<Letter> accelerators to invoke the | |
| 597 menus. | |
| 598 | |
| 599 ** Other init-file-related changes. | |
| 464 | 600 |
| 601 *** Init file in your home directory may be called `.emacs.el'. | |
| 442 | 602 |
| 464 | 603 Like in GNU Emacs 20.4 and on, you can now name the XEmacs init file |
| 604 located in your home directory `.emacs.el'. Formerly the name had to | |
| 605 be `.emacs'. If you use the name `.emacs.el', you can byte-compile | |
| 606 the file in the usual way. | |
| 607 | |
| 608 If both `.emacs' and `.emacs.el' exist, the latter file is the one | |
| 609 that is used. | |
| 442 | 610 |
| 464 | 611 *** New command-line switches -user-init-file and -user-init-directory. |
| 479 | 612 |
| 464 | 613 These can be used to specify alternate locations for what is normally |
| 614 ~/.emacs and ~/.xemacs. | |
| 442 | 615 |
| 464 | 616 Moreover, the `-user <user>' command-line option (which used to only |
| 617 work in unpredictable ways) is now equivalent to `-user-init-file | |
| 618 ~<user>/.xemacs/init.el -user-init-directory ~<user>/.xemacs', or | |
| 619 `-user-init-file ~<user>/.emacs -user-init-directory ~<user>/.xemacs', | |
| 620 whichever init file comes first. | |
| 621 | |
| 428 | 622 ** Etags changes. |
| 623 | |
| 624 *** In DOS, etags looks for file.cgz if it cannot find file.c. | |
| 625 | |
| 479 | 626 *** New option --ignore-case-regex is an alternative to --regex. |
| 627 It is now possible to bind a regexp to a language, by prepending the | |
| 628 regexp with {lang}, where lang is one of the languages that `etags | |
| 629 --help' prints out. This feature is useful especially for regex | |
| 630 files, where each line contains a regular expression. The manual | |
| 631 contains details. | |
| 428 | 632 |
| 479 | 633 *** New option --declarations, for C-type languages. |
| 634 In C and derived languages, etags creates tags for function | |
| 428 | 635 declarations when given the --declarations option. |
| 636 | |
| 479 | 637 *** In C++, tags are created for "operator". |
| 638 The tags have the form "operator+", without spaces between the | |
| 639 keyword and the operator. | |
| 428 | 640 |
| 479 | 641 *** Ada now supported. |
| 642 Tags are functions, procedures, packages, tasks, and types. | |
| 428 | 643 |
| 464 | 644 *** In Fortran, procedure is no longer tagged. |
| 428 | 645 |
| 646 *** In Java, tags are created for "interface". | |
| 647 | |
| 479 | 648 *** In Lisp, def-type constructs are now tagged. |
| 649 This includes "(defstruct (foo", "(defun (operator" and similar constructs. | |
| 650 | |
| 651 *** In Perl, the --globals option tags global variables. | |
| 652 my and local variables are tagged. | |
| 428 | 653 |
| 479 | 654 *** Python now supported. |
| 655 def and class at the beginning of a line are tags. | |
| 428 | 656 |
| 479 | 657 *** New file extensions recognized: .ss, .pdb, .psw. |
| 658 .ss files are Scheme files, .pdb is Postscript with C syntax, .psw is | |
| 428 | 659 for PSWrap. |
| 660 | |
| 661 | |
| 464 | 662 * Lisp and internal changes in XEmacs 21.4 |
| 428 | 663 ========================================== |
| 664 | |
| 440 | 665 ** A new portable dumper is available for beta testing. |
| 430 | 666 |
| 667 Olivier Galibert has written a portable dumper for XEmacs, based on | |
| 464 | 668 initial work by Kyle Jones. To perform even the most basic editor, |
| 669 XEmacs requires some amount of Lisp code to be loaded. To avoid | |
| 670 repeating the expensive loading process at every startup, XEmacs is | |
| 671 built in a special way. Its C sources link into an executable called | |
| 672 `temacs', which loads the bootstrap Lisp code and uses a special | |
| 673 "unexec" call to dump the resulting memory image into a proper | |
| 674 `xemacs' executable on disk. The unexec() process is hard to | |
| 432 | 675 implement correctly and makes XEmacs very hard to port to new |
| 676 operating systems, or even to new releases of old systems. | |
| 430 | 677 |
| 464 | 678 The new portable dumper uses a different approach to dumping: instead |
| 679 of dumping full-fledged executable, it only dumps out the initialized | |
| 430 | 680 data structures (both Lisp and C) into an external file. A normally |
| 464 | 681 running XEmacs only needs to mmap that file and relocate a bit to get |
| 682 to the initialized data. In that scheme, there is no difference | |
| 430 | 683 between `temacs' and `xemacs'. |
| 684 | |
| 464 | 685 Unfortunately, the portable dumper has not been completely finished |
| 686 for this release, and will not be used by default. However, if you | |
| 687 wish to experiment with it, or if you need to compile XEmacs on a new | |
| 688 and unsupported platform, you can test it by configuring XEmacs with | |
| 689 `--pdump' flag. | |
| 440 | 690 |
| 428 | 691 ** Much effort has been invested to make XEmacs Lisp faster: |
| 692 | |
| 693 *** Many basic lisp operations are now faster. | |
| 694 This is especially the case when running a Mule-enabled XEmacs. | |
| 695 | |
| 696 A general overhaul of the lisp engine should produce a speedup of 1.4 | |
| 464 | 697 in a non-Mule XEmacs, and 2.1 in a Mule XEmacs. These numbers were |
| 428 | 698 obtained running `(byte-compile "simple.el")', which should be a |
| 699 pretty typical test of "pure" Lisp. | |
| 700 | |
| 701 *** Lisp hash tables have been re-implemented. The Common Lisp style | |
| 702 hash table interface has been made standard, and moved from cl.el into | |
| 703 fast C code (See the section on hash tables in the XEmacs Lisp | |
| 704 Reference). A speedup factor of 3 can be expected with code that | |
| 705 makes intensive use of hash tables. | |
| 706 | |
| 707 *** The garbage collector has been tuned, leading to a speedup of | |
| 708 1.16. | |
| 709 | |
| 464 | 710 *** The byte-compiler and the byte-optimizer have been tuned to |
| 711 produce better code in many small ways. | |
| 712 | |
| 428 | 713 *** The family of functions that iterate over lists, like `memq', and |
| 714 `rassq', have been made a little faster (typically 1.3). | |
| 715 | |
| 716 *** Lisp function calls are faster, by approximately a factor of two. | |
| 717 However, defining inline functions (via defsubst) still makes sense | |
| 718 for tight loops. | |
| 719 | |
| 720 *** Finally, a few functions have had dramatic performance | |
| 721 improvements. For example, `(last long-list)' is now 30 times faster. | |
| 722 | |
| 723 Of course, your mileage will vary. | |
| 724 | |
| 725 Many operations do not see any improvement. Surprisingly, running | |
| 726 (font-lock-fontify-buffer) does not use the Lisp engine much at all. | |
| 727 Speeding up your favorite slow operation is an excellent project to | |
| 728 improve XEmacs. Don't forget to profile! | |
| 729 | |
| 430 | 730 ** Native widgets can be displayed in buffers. |
| 731 | |
| 732 The glyph system has been extended to allow the display of glyphs that | |
| 733 are implemented as native window-system widgets. Thus you can embed | |
| 734 buttons, scrollbars, combo boxes, edit fields and progress gauges in a | |
| 735 buffer. As a side effect subwindow support now works once again. | |
| 736 | |
| 440 | 737 All of this is still fairly experimental and there is no |
| 442 | 738 documentation. The current APIs might change in a future version of |
| 479 | 739 XEmacs. Some widgets are only available under MS Windows. See the |
| 440 | 740 file glyphs-test.el in the XEmacs src distribution for examples of |
| 741 usage. | |
| 430 | 742 |
| 440 | 743 The buffers-tab functionality and progress gauge have been implemented |
| 744 using this feature. | |
| 430 | 745 |
| 464 | 746 ** Case translation now supports international characters. |
| 747 | |
| 748 *** Instead of being lists of 256-character strings, case tables are | |
| 749 now opaque objects. The interface to access them is almost the same, | |
| 750 except it now works for international characters, and you can set the | |
| 751 case pairs using `put-case-table-pair'. `set-case-table' and friends | |
| 752 still support the old list/string based interface for backward | |
| 753 compatibility. | |
| 754 | |
| 755 *** As a consequence of this change, functions `downcase' and `upcase' | |
| 756 as well as all the case-transformation commands now work with | |
| 757 non-ASCII characters. Built-in tables cover all the Latin character | |
| 758 sets that we support. If your language has a distinction between | |
| 759 upper and lower case that is not handled by XEmacs/Mule, please let us | |
| 760 know. | |
| 761 | |
| 762 *** The code that implements case-insensitive search has been modified | |
| 763 to respect the case table settings. This also applies to regexp | |
| 764 search. | |
| 765 | |
| 479 | 766 ** Syntax tables may now be specified for a part of a buffer by |
| 767 attaching the `syntax-table' property to an extent. For compatibility | |
| 768 with GNU Emacs, you may use the text-property interface to achieve the | |
| 769 same result. | |
| 770 | |
| 464 | 771 ** Values of variables `user-init-file' and `user-init-directory' are |
| 772 now absolute file/directory names. Previously, both variables used to | |
| 773 be relative to `(concat "~" init-file-user)'. This turned out to be | |
| 774 too complicated for most packages (and some core Lisp files) to use | |
| 775 correctly. Also, the `init-file-user' variable has been obsoleted in | |
| 776 the process. | |
| 440 | 777 |
| 442 | 778 The user-visible options like `-u' have not changed their behavior. |
| 430 | 779 |
| 428 | 780 ** XEmacs finally has an automated test suite! |
| 781 Although this is not yet very sophisticated, it is already responsible | |
| 782 for several important bug fixes in XEmacs. To try it out, simply use | |
| 783 the makefile target `make check' after building XEmacs. | |
| 784 | |
| 785 ** Hash tables have been reimplemented. | |
| 786 As was pointed out above, the standard interface to hash tables is now | |
| 787 the Common Lisp interface, as described in Common Lisp, the Language | |
| 788 (CLtL2, by Steele). The older interface (functions with names | |
| 789 containing the phrase `hashtable') will continue to work, but the | |
| 790 preferred interface now has names containing the phrase `hash-table'. | |
| 791 | |
| 792 Here's the executive overview: create hash tables using | |
| 793 make-hash-table, and use gethash, puthash, remhash, maphash and | |
| 794 clrhash to manipulate entries in the hash table. See the (updated) | |
| 795 Lisp Reference Manual for details. | |
| 796 | |
| 797 ** Lisp code handles circular lists much more robustly. | |
| 798 Many basic lisp functions used to loop forever when given a circular | |
| 799 list, expecting you to C-g (quit) out of the loop. Now this is more | |
| 800 likely to trigger a `circular-list' error. Printing a circular list | |
| 801 now results in something like this: | |
| 802 | |
| 803 (let ((x (cons 'foo 'foo))) | |
| 804 (setcdr x x) | |
| 805 x) | |
| 806 => (foo ... <circular list>) | |
| 807 | |
| 808 An extra bonus is that checking for circularities is not just | |
| 809 friendlier, but actually faster than checking for C-g. | |
| 810 | |
| 430 | 811 ** Functions for decoding base64 encoding are now available; see |
| 812 `base64-encode-region', `base64-encode-string', `base64-decode-region' | |
| 813 and `base64-decode-string'. | |
| 428 | 814 |
| 440 | 815 ** The functions `read-string', `read-expression', `eval-minibuffer', |
| 816 `read-variable', `read-command', `read-function', `read-number', | |
| 817 `read-shell-command', `read-from-minibuffer', and `completing-read' | |
| 818 now take an additional argument which specifies the default value. If | |
| 819 this argument is non-nil, it should be a string; that string is used | |
| 820 in two ways: | |
| 821 | |
| 464 | 822 * It is returned if the user enters empty input. |
| 823 * It is available as the logical "future" entry, by pressing the down | |
| 824 arrow. | |
| 440 | 825 |
| 826 ** LDAP changes. | |
| 827 | |
| 828 *** The LDAP interface now consists of two layers, a low-level layer | |
| 829 that closely matches the LDAP C API, and a more convenient | |
| 830 higher-level set of functions. | |
| 831 | |
| 832 *** The low-level functions that used to be named *-internal are now | |
| 833 named more simply: `ldap-open', `ldap-close', `ldap-search-basic', | |
| 834 `ldap-add', and `ldap-modify'. They should be used directly for very | |
| 835 specific purposes (such as multiple operations on a connection) only. | |
| 836 | |
| 837 *** The higher-level functions provide a more convenient way to access | |
| 838 LDAP directories hiding the subtleties of handling the connection, | |
| 839 translating arguments and ensuring compliance with LDAP | |
| 840 internationalization rules and formats (currently partly implemented | |
| 841 only.) This layer provides atomic operations for searches, | |
| 842 modification, addition and deletion of multiple entries at once: | |
| 843 `ldap-search-entries', `ldap-add-entries', `ldap-delete-entries', and | |
| 844 `ldap-modify-entries'. | |
| 845 | |
| 846 *** To maintain compatibility with previous code, the now obsolete | |
| 847 function `ldap-search' is now merely a wrapper that calls either | |
| 848 `ldap-search-basic' or `ldap-search-entries'. Please don't use the | |
| 849 `ldap-search' function in your new programs -- a direct call to one of | |
| 850 the two replacements is more efficient and unambiguous. | |
| 851 | |
| 430 | 852 ** The arguments to `locate-file' are now more Lisp-like. As before, |
| 853 the usage is: | |
| 428 | 854 |
| 855 (locate-file FILENAME PATH-LIST &optional SUFFIXES MODE) | |
| 856 | |
| 857 Except that SUFFIXES are now a list of strings instead of a single, | |
| 858 colon-separated string. MODE is now a symbol or a list of symbols | |
| 859 (symbols `exists', `executable', `writable', and `readable' are | |
| 860 supported) instead of an integer code. See the documentation for | |
| 861 details. Of course, the old form is still accepted for backward | |
| 862 compatibility. | |
| 863 | |
| 864 Several bugs in locate-file have been fixed, most notably its failure | |
| 865 to call expand-file-name on elements of PATH-LIST. Because of that | |
| 866 elements of load-path of the form "~/..." used to not work. | |
| 867 locate-file is now guaranteed to expand files during its course of | |
| 868 operation. | |
| 869 | |
| 870 ** `translate-region' has been improved in several ways. Its TABLE | |
| 871 argument used to be a 256-character string. In addition to this, it | |
| 872 can now also be a vector or a char-table, which makes the function | |
| 464 | 873 useful for Mule, which it wasn't. If TABLE is a vector or a generic |
| 428 | 874 char-table, you can map characters to strings instead of to other |
| 875 characters. For instance: | |
| 876 | |
| 877 (let ((table (make-char-table 'generic))) | |
| 878 (put-char-table ?a "the letter a" table) | |
| 879 (put-char-table ?b "" table) | |
| 880 (put-char-table ?c ?\n table) | |
| 881 (translate-region (point-min) (point-max) table)) | |
| 882 | |
| 430 | 883 ** The new form `ignore-file-errors', similar to `ignore-errors' may |
| 884 be used as a short-hand for condition-case when you wish to ignore | |
| 885 file-related error. For example: | |
| 886 | |
| 887 (ignore-file-errors (delete-file "foo")) | |
| 888 | |
| 889 ** The first argument to `intern-soft' may now also be a symbol, like | |
| 890 with `unintern'. If given a symbol, `intern-soft' will look for that | |
| 891 exact symbol rather than for any string. This is useful when you want | |
| 892 to check whether a specific symbol is interned in an obarray, e.g.: | |
| 893 | |
| 894 (intern "foo") | |
| 895 (intern-soft "foo") | |
| 896 => foo | |
| 897 (intern-soft (make-symbol "foo")) | |
| 898 => nil | |
| 899 | |
| 428 | 900 ** The `keywordp' function now returns non-nil only on symbols |
| 901 interned in the global obarray. For example: | |
| 902 | |
| 903 (keywordp (intern ":foo" [0])) | |
| 904 => nil | |
| 905 (keywordp (intern ":foo")) ; The same as (keywordp :foo) | |
| 906 => t | |
| 907 | |
| 442 | 908 This behavior is compatible with other code which treats symbols |
| 428 | 909 beginning with colon as keywords only if they are interned in the |
| 464 | 910 global obarray. `keywordp' used to wrongly return t in both above |
| 911 cases. | |
| 912 | |
| 913 ** The function `replace-in-string' has been rewritten to use | |
| 914 `replace-match'. This not only makes it much faster, but adds all the | |
| 915 features of `replace-match'. | |
| 428 | 916 |
| 442 | 917 ** New variables `this-command-properties' and |
| 918 `last-command-properties' are now available for communication between | |
| 919 consecutive commands. Commands should use these to communicate with | |
| 920 the pre/post-command hooks, subsequent commands, wrapping commands, | |
| 921 etc. in preference to looking at and/or setting `this-command'. | |
| 922 | |
| 923 ** New functions `add-one-shot-hook' and `add-local-one-shot-hook' make | |
| 924 it possible to add a "one-shot" hook, which is to say a hook that runs | |
| 925 only once, and automatically removes itself after the first time it | |
| 926 has run. | |
| 927 | |
| 928 ** The descriptor that specifies the text of a menu item can now be an | |
| 464 | 929 evaluated expression. This makes it parallel with other descriptors, |
| 930 which can also be expressions. | |
| 442 | 931 |
| 428 | 932 |
| 933 * Changes in XEmacs 21.0 | |
| 934 ======================== | |
| 935 | |
| 936 ** XEmacs has been unbundled into constituent installable packages. | |
| 937 See the Info documentation under "Packages" for more information. | |
| 938 See the file `etc/PACKAGES' in the distribution for a partial list of | |
| 939 packages available at the time of the 21.0 release. | |
| 940 | |
| 941 ** XEmacs is now supported under Microsoft Windows 95/98 and Windows | |
| 942 NT operating systems. For starters, look at the XEmacs on Windows FAQ | |
| 943 at <URL:http://jagor.srce.hr/~hniksic/xemacs-on-windows-faq.txt>. To | |
| 944 discuss Windows-specific issues, subscribe to the mailing list at | |
| 945 <xemacs-nt-request@xemacs.org>. | |
| 946 | |
| 947 ** XEmacs will now use `XEmacs' as its application class if it finds | |
| 948 any `XEmacs' resources in the resource database. Otherwise, it will | |
| 949 continue to use the `Emacs' class. | |
| 950 | |
| 951 ** The options menu has been ported to Custom. | |
| 952 This means that each entry in the options menu acts as if you had customized | |
| 953 the corresponding variable by hand. ### WARNING: there is currently no | |
| 954 upgrading function to help you port your old options settings to the new | |
| 955 format. Consequently, if you want to modify the options for XEmacs 21, you | |
| 956 will have to set them all again through the menu, and remove the code loading | |
| 957 .xemacs-options from your .emacs. | |
| 958 | |
| 959 ** When the Zmacs region is active, `M-x query-replace' and the other | |
| 960 replace commands now operate on the region contents only. | |
| 961 | |
| 962 ** XEmacs now is able to choose X visuals and use private colormaps. | |
| 963 The '-visual <visualStr>' command line option or the '.EmacsVisual' | |
| 964 Xresource controls which visual XEmacs will use, and | |
| 965 '-privateColormap' or '.privateColormap' will force XEmacs to create a | |
| 966 private colormap for use. The syntax for the visual string is | |
| 967 "<visual><bitdepth>" where <visual> is one of 'StaticColor', | |
| 968 'TrueColor', 'GrayScale', 'PseudoColor' or 'DirectColor' and | |
| 969 <bitdepth> is the appropriate number of bits per pixel. If an invalid | |
| 970 or non-supported combination is entered, XEmacs attempts to find a happy | |
| 971 medium. The X creation mechanism will then determine if it needs to | |
| 972 create a colormap for use, or the presence of the private flags will | |
| 973 force it to create it. | |
| 974 | |
| 975 ** The `imenu' package has been ported to XEmacs and is available as a | |
| 976 package. | |
| 977 | |
| 978 ** `echo-keystrokes' can now be a floating-point number, so that you | |
| 979 can set it to intervals shorter than one second. | |
| 980 | |
| 981 (setq echo-keystrokes 0.1) | |
| 982 | |
| 983 ** The new command `center-to-window-line' works like `recenter' | |
| 984 (bound to `C-l'), only it does not redisplay the whole display area. | |
| 985 | |
| 986 ** The M-. command will now first search through exact tags matches, | |
| 987 and then through inexact matches, as one would expect. | |
| 988 | |
| 989 ** The new variable `user-full-name' can be used to customize one's | |
| 990 name when using the Emacs mail and news reading facilities. | |
| 991 | |
| 992 Normally, `user-full-name' is a function that returns the full name of | |
| 993 a user or UID, as specified by the system -- for instance, | |
| 994 (user-full-name "root") returns something like "Super-User". However, | |
| 995 when the function is called without arguments, it will return the | |
| 996 value of the `user-full-name' variable. The `user-full-name' variable | |
| 997 is initialized using the environment variable NAME and (failing that) | |
| 998 the user's system name. | |
| 999 | |
| 1000 The behavior of the `user-full-name' function with an argument | |
| 1001 specified is unchanged. | |
| 1002 | |
| 1003 ** The new command `M-x customize-changed-options' lets you customize | |
| 1004 all the options whose default values have changed in recent Emacs | |
| 1005 versions. You specify a previous Emacs version number as argument, | |
| 1006 and the command creates a customization buffer showing all the | |
| 1007 customizable options whose default values were changed since that | |
| 1008 version. | |
| 1009 | |
| 1010 If you don't specify a particular version number argument, then the | |
| 1011 customization buffer shows all the customizable options for which | |
| 1012 Emacs versions of changes are recorded. | |
| 1013 | |
| 1014 ** The new command `add-log-convert' can be used to convert the | |
| 1015 old-style (pre-20.3) ChangeLog buffers to new style, for | |
| 1016 consistency. A reminder: if you wish to revert to old-style | |
| 1017 ChangeLogs instead, customize the value of `add-log-time-format' | |
| 1018 variable. | |
| 1019 | |
| 1020 ** The new command `zap-up-to-char' is now available. It is similar | |
| 1021 to `zap-to-char', except that it does not delete the searched-for | |
| 1022 character. It is not bound to a key by default. | |
| 1023 | |
| 1024 ** You can now store a number into a register with `C-u NUMBER C-x r n' | |
| 1025 REG, increment it by INC with `C-u INC C-x r + REG' (to increment by | |
| 1026 one, omit C-u INC), and insert it in the buffer with `C-x r g REG'. | |
| 1027 This is useful for writing keyboard macros. | |
| 1028 | |
| 1029 ** The M-: command, when given a prefix argument, will now insert its | |
| 1030 result to the current buffer. | |
| 1031 | |
| 1032 ** The `C-h c' command, when given a prefix argument, will now insert | |
| 1033 the message into the current buffer. | |
| 1034 | |
| 1035 ** Horizontally split windows may now be dragged using the mouse. | |
| 1036 Because of this, the dividers between vertical windows are always | |
| 1037 visible. To turn it off, set `vertical-divider-always-visible-p' to | |
| 1038 nil. | |
| 1039 | |
| 1040 ** XEmacs/Mule (internationalization) changes. | |
| 1041 | |
| 1042 *** Mule support now works on TTY's. Use `set-terminal-coding-system' | |
| 1043 and `set-keyboard-coding-system' to specify the coding system of your | |
| 1044 display and keyboard. | |
| 1045 | |
| 1046 *** Egg/SJ3 input method is now officially supported. Quail and | |
| 1047 Egg/Skk have been available through the generalized Leim since 20.3. | |
| 1048 | |
| 1049 *** Localized Japanese menubars are available if XEmacs is built with | |
| 1050 XFONTSET and either the X11 libraries are built with X_LOCALE defined | |
| 1051 or the native C libraries support Japanese localization. This has | |
| 1052 been available since 20.3, only it hasn't been announced before. | |
| 1053 | |
| 1054 ** Jamie Zawinski's `gdb-highlight' extension is now distributed with | |
| 1055 the `debug' package. gdb-highlight makes most objects printed in a | |
| 1056 gdb buffer be mouse-sensitive: as text shows up in the buffer, it is | |
| 1057 parsed, and objects which are recognized have context-sensitive | |
| 1058 commands attached to them. To use it, add the following to `.emacs': | |
| 1059 | |
| 1060 (add-hook 'gdb-mode-hook (lambda () (require 'gdb-highlight))) | |
| 1061 | |
| 1062 ** The package popper.el is now included in the edit-utils package. | |
| 1063 It has been greatly enhanced with respect to the one once included | |
| 1064 with the ilisp package and should work well under XEmacs 21.0. | |
| 1065 | |
| 1066 ** Gnuserv changes | |
| 1067 | |
| 1068 *** Like the old 'gnudoit' program. Gnuclient -batch now can read from stdin. | |
| 1069 | |
| 1070 *** Gnuclient -batch no longer breaks off the output at the first LF. | |
| 1071 | |
| 1072 ** C mode changes | |
| 1073 | |
| 1074 *** Multiline macros are now handled, both as they affect indentation, | |
| 1075 and as recognized syntax. New syntactic symbol cpp-macro-cont is | |
| 1076 assigned to second and subsequent lines of a multiline macro | |
| 1077 definition. | |
| 1078 | |
| 1079 *** A new style "user" which captures all non-hook-ified | |
| 1080 (i.e. top-level) .emacs file variable setings and customizations. | |
| 1081 Style "cc-mode" is an alias for "user" and is deprecated. "gnu" style | |
| 1082 is still the default however. | |
| 1083 | |
| 1084 *** "java" style now conforms to Sun's JDK coding style. | |
| 1085 | |
| 1086 *** There are new commands c-beginning-of-defun, c-end-of-defun which | |
| 1087 are alternatives which you could bind to C-M-a and C-M-e if you prefer | |
| 1088 them. They do not have key bindings by default. | |
| 1089 | |
| 1090 *** New and improved implementations of M-a (c-beginning-of-statement) | |
| 1091 and M-e (c-end-of-statement). | |
| 1092 | |
| 1093 *** C++ namespace blocks are supported, with new syntactic symbols | |
| 1094 namespace-open, namespace-close, and innamespace. | |
| 1095 | |
| 1096 *** File local variable settings of c-file-style and c-file-offsets | |
| 1097 makes the style variables local to that buffer only. | |
| 1098 | |
| 1099 *** New indentation functions c-lineup-close-paren, | |
| 1100 c-indent-one-line-block, c-lineup-dont-change. | |
| 1101 | |
| 1102 *** Improvements (hopefully!) to the way CC Mode is loaded. You | |
| 1103 should now be able to do a (require 'cc-mode) to get the entire | |
| 1104 package loaded properly for customization in your .emacs file. A new | |
| 1105 variable c-initialize-on-load controls this and is t by default. | |
| 1106 | |
| 1107 ** In Text mode, now only blank lines separate paragraphs. | |
| 1108 This makes it possible to get the full benefit of Adaptive Fill mode | |
| 1109 in Text mode, and other modes derived from it (such as Mail mode). | |
| 1110 TAB in Text mode now runs the command indent-relative; this makes a | |
| 1111 practical difference only when you use indented paragraphs. | |
| 1112 | |
| 1113 As a result, the old Indented Text mode is now identical to Text mode, | |
| 1114 and is an alias for it. | |
| 1115 | |
| 1116 If you want spaces at the beginning of a line to start a paragraph, | |
| 1117 use the new mode, Paragraph Indent Text mode. | |
| 1118 | |
| 1119 ** Changes to Gnus, the XEmacs newsreader. | |
| 1120 | |
| 1121 *** New functionality for using Gnus as an offline newsreader has been | |
| 1122 added. A plethora of new commands and modes have been added. See the | |
| 1123 Gnus manual for the full story. | |
| 1124 | |
| 1125 *** The nndraft backend has returned, but works differently than | |
| 1126 before. All Message buffers are now also articles in the nndraft | |
| 1127 group, which is created automatically. | |
| 1128 | |
| 1129 *** `gnus-alter-header-function' can now be used to alter header | |
| 1130 values. | |
| 1131 | |
| 1132 *** `gnus-summary-goto-article' now accept Message-ID's. | |
| 1133 | |
| 1134 *** A new Message command for deleting text in the body of a message | |
| 1135 outside the region: `C-c C-v'. | |
| 1136 | |
| 1137 *** You can now post to component group in nnvirtual groups with | |
| 1138 `C-u C-c C-c'. | |
| 1139 | |
| 1140 *** `nntp-rlogin-program' -- new variable to ease customization. | |
| 1141 | |
| 1142 *** `C-u C-c C-c' in `gnus-article-edit-mode' will now inhibit | |
| 1143 re-highlighting of the article buffer. | |
| 1144 | |
| 1145 *** New element in `gnus-boring-article-headers' -- `long-to'. | |
| 1146 | |
| 1147 *** `M-i' symbolic prefix command. See the section "Symbolic | |
| 1148 Prefixes" in the Gnus manual for details. | |
| 1149 | |
| 1150 *** `L' and `I' in the summary buffer now take the symbolic prefix | |
| 1151 `a' to add the score rule to the "all.SCORE" file. | |
| 1152 | |
| 1153 *** `gnus-simplify-subject-functions' variable to allow greater | |
| 1154 control over simplification. | |
| 1155 | |
| 1156 *** `A T' -- new command for fetching the current thread. | |
| 1157 | |
| 1158 *** `/ T' -- new command for including the current thread in the | |
| 1159 limit. | |
| 1160 | |
| 1161 *** `M-RET' is a new Message command for breaking cited text. | |
| 1162 | |
| 1163 *** \\1-expressions are now valid in `nnmail-split-methods'. | |
| 1164 | |
| 1165 *** The `custom-face-lookup' function has been removed. | |
| 1166 If you used this function in your initialization files, you must | |
| 1167 rewrite them to use `face-spec-set' instead. | |
| 1168 | |
| 1169 *** Cancelling now uses the current select method. Symbolic prefix | |
| 1170 `a' forces normal posting method. | |
| 1171 | |
| 1172 *** New command to translate M******** sm*rtq**t*s into proper text | |
| 1173 -- `W d'. | |
| 1174 | |
| 1175 *** For easier debugging of nntp, you can set `nntp-record-commands' | |
| 1176 to a non-nil value. | |
| 1177 | |
| 1178 *** nntp now uses ~/.authinfo, a .netrc-like file, for controlling | |
| 1179 where and how to send AUTHINFO to NNTP servers. | |
| 1180 | |
| 1181 *** A command for editing group parameters from the summary buffer | |
| 1182 has been added. | |
| 1183 | |
| 1184 *** A history of where mails have been split is available. | |
| 1185 | |
| 1186 *** A new article date command has been added -- `article-date-iso8601'. | |
| 1187 | |
| 1188 *** Subjects can be simplified when threading by setting | |
| 1189 `gnus-score-thread-simplify'. | |
| 1190 | |
| 1191 *** A new function for citing in Message has been added -- | |
| 1192 `message-cite-original-without-signature'. | |
| 1193 | |
| 1194 *** `article-strip-all-blank-lines' -- new article command. | |
| 1195 | |
| 1196 *** A new Message command to kill to the end of the article has | |
| 1197 been added. | |
| 1198 | |
| 1199 *** A minimum adaptive score can be specified by using the | |
| 1200 `gnus-adaptive-word-minimum' variable. | |
| 1201 | |
| 1202 *** The "lapsed date" article header can be kept continually | |
| 1203 updated by the `gnus-start-date-timer' command. | |
| 1204 | |
| 1205 *** Web listserv archives can be read with the nnlistserv backend. | |
| 1206 | |
| 1207 *** Old dejanews archives can now be read by nnweb. | |
| 1208 | |
| 1209 *** Byte-compilation of user-specs now works under XEmacs. | |
| 1210 | |
| 1211 ** The `dir' files are no longer essential for functioning of the Info | |
| 1212 subsystem. If the `dir' file does not exist in an Info directory, the | |
| 1213 relevant information will be generated on-the-fly. | |
| 1214 | |
| 1215 This behavior can be customized, look for `Info-auto-generate-directory' | |
| 1216 and `Info-save-auto-generated-dir' in the `info' customization group. | |
| 1217 | |
| 1218 | |
| 1219 * Lisp and internal changes in XEmacs 21.0 | |
| 1220 ========================================== | |
| 1221 | |
| 1222 ** It is now possible to build XEmacs with support for 31-bit Lisp | |
| 1223 integers (normally, Lisp integers are only 28 bits wide on 32-bit | |
| 1224 machines.) Configure with --use-minimal-tagbits to test. With this | |
| 1225 change, the maximum buffer size on 32-bit machines is increased from | |
| 1226 128M to 1G. This setting will be made default in a future XEmacs | |
| 1227 version. | |
| 1228 | |
| 1229 ** Specifier changes. | |
| 1230 | |
| 1231 *** When instantiating a specifier, the window locale now has a higher | |
| 1232 precedence than the buffer locale. This is because the window locale | |
| 1233 is more specific than the buffer locale. | |
| 1234 | |
| 1235 *** The new macro `let-specifier' can be used to temporarily add | |
| 1236 specifications to specifiers. See the documentation for details. | |
| 1237 | |
| 1238 *** The new specifiers `vertical-scrollbar-visible-p' and | |
| 1239 `horizontal-scrollbar-visible-p' may be used to control scrollbar | |
| 1240 visibility. Previously, the only way to remove a scrollbar was to set | |
| 1241 its size to 0. This method is still supported for backward | |
| 1242 compatibility. | |
| 1243 | |
| 1244 *** The new specifiers `scrollbar-on-left-p' and `scrollbar-on-top-p' | |
| 1245 may be used to control the position of the vertical and horizontal | |
| 1246 toolbar. Previously, their position could be changed only through the | |
| 1247 use of X resources. | |
| 1248 | |
| 1249 *** The new draggable vertical dividers between windows may be turned | |
| 1250 off using the `vertical-divider-always-visible-p' specifier. When | |
| 1251 this is set to nil, the vertical dividers between windows are shown | |
| 1252 only when needed, and they are not draggable. | |
| 1253 | |
| 1254 Other properties of the vertical dividers may be controlled using | |
| 1255 `vertical-divider-shadow-thickness', `vertical-divider-line-width' and | |
| 1256 `vertical-divider-spacing' specifiers, which see. | |
| 1257 | |
| 1258 ** Frame focus management changes. | |
| 1259 | |
| 1260 *** When the variable focus-follows-mouse is non-nil, `select-frame' | |
| 1261 no longer permanently selects a different frame. The frame selection | |
| 1262 is temporary and is reverted when the current command terminates, much | |
| 1263 like the buffer selected by `set-buffer'. This is the same as in FSF | |
| 1264 Emacs. | |
| 1265 | |
| 1266 *** The new function `focus-frame' sets the window system focus to | |
| 1267 FRAME (and selects it), regardless of the value of | |
| 1268 `focus-follows-mouse'. Doing this is not well behaved, so be | |
| 1269 absolutely sure that you want this. | |
| 1270 | |
| 1271 The code that uses `select-frame' only to get the window manager focus | |
| 1272 should be changed to use `set-frame-focus' instead, so that they keep | |
| 1273 working when `focus-follows-mouse' is non-nil. | |
| 1274 | |
| 1275 *** The special forms `save-selected-frame' and `with-selected-frame' | |
| 1276 can now be used to temporarily change selected frame. | |
| 1277 | |
| 1278 *** The behavior of `other-frame' command (`C-x 5 o') is unaffected by | |
| 1279 these changes. | |
| 1280 | |
| 1281 ** The function `select-window' now has an optional second argument | |
| 1282 NORECORD which if non-nil inhibits the recording of a buffer change. | |
| 1283 | |
| 1284 ** The function `vertical-motion' now correctly handles the second, | |
| 1285 optional WINDOW argument. A new third argument PIXELS, if non-nil, | |
| 1286 indicates that the returned motion should be in pixels. | |
| 1287 | |
| 1288 ** The new function `vertical-motion-pixels' is similar to | |
| 1289 vertical-motion but takes as input a vertical motion in pixels. | |
| 1290 | |
| 1291 ** The new functions window-text-area-pixel-{width,height,edges} can | |
| 1292 be used to obtain information about the text-displaying area of a | |
| 1293 window. | |
| 1294 | |
| 1295 ** The new functions `shrink-window-pixels' and `enlarge-window-pixels' | |
| 1296 can be used to adjust the size of a window by a pixel amount. | |
| 1297 | |
| 1298 ** The new function `window-displayed-text-pixel-height' can be used | |
| 1299 to determine the height of the text actually displayed in a window. | |
| 1300 | |
| 1301 ** The arithmetic comparison functions <, >, =, /= now accept a | |
| 1302 variable number of arguments. | |
| 1303 | |
| 1304 This means that if you want to test whether A < B < C, you can write | |
| 1305 it as (< A B C) instead of (and (< A B) (< B C)). Likewise, | |
| 1306 (apply #'> LIST) now tests if LIST is monotonously increasing -- and | |
| 1307 so on. | |
| 1308 | |
| 1309 ** The XEmacs hashtables now have a consistent read/print syntax. | |
| 1310 This means that a hashtable will be readably printed in a | |
| 1311 structure-like form: | |
| 1312 | |
| 1313 #s(hashtable size 2 data (key1 value1 key2 value2)) | |
| 1314 | |
| 1315 When XEmacs reads this form, it will create a new hashtable according | |
| 1316 to description. This allows you to easily dump hashtables to files | |
| 1317 using `prin1', and read them back in using `read'. | |
| 1318 | |
| 1319 If `print-readably' is non-nil, a more relaxed syntax is used; for | |
| 1320 instance: | |
| 1321 | |
| 1322 #<hashtable size 2/13 data (key1 value1 key2 value2) 0x874d> | |
| 1323 | |
| 1324 ** It is now possible to build XEmacs with LDAP support. | |
| 1325 You will need to install a LDAP library first. The following have | |
| 1326 been tested: | |
| 1327 - LDAP 3.3 from the University of Michigan | |
| 1328 (get it from <URL:http://www.umich.edu/~dirsvcs/ldap/>) | |
| 1329 - OpenLDAP 1.0.3 from the OpenLDAP Foundation | |
| 1330 (get it from <URL:http://www.openldap.org/>) | |
| 1331 - LDAP SDK 1.0 from Netscape Corp. | |
| 1332 (get it from <URL:http://developer.netscape.com/>) | |
| 1333 | |
| 1334 ** When profiling is in effect, a call-count of all recorded functions | |
| 1335 is now calculated. This information is stored in | |
| 1336 `call-count-profile-table', and is utilized by `profile-results' as | |
| 1337 well as the new command `profile-call-count-results'. | |
| 1338 | |
| 1339 ** It is now an error to change the value of a symbol whose name | |
| 1340 starts with a colon, if it is interned in the standard obarray. | |
| 1341 | |
| 1342 However, setting such a symbol to its proper value, which is that | |
| 1343 symbol itself, is not an error. This is for the sake of programs that | |
| 1344 support pre-19.12 XEmacs and pre-20 GNU Emacs by explicitly setting | |
| 1345 these variables to themselves. | |
| 1346 | |
| 1347 ** The `concat' function no longer accepts integer arguments. | |
| 1348 | |
| 1349 ** The new function `string' concatenates all its argument characters | |
| 1350 and returns the resulting string. This is consistent with other | |
| 1351 functions, like `list', `vector', etc. | |
| 1352 | |
| 1353 ** The function `temp-directory' is now available to return the | |
| 1354 directory to store temporary files. On Unix this will be obtained | |
| 1355 from TMPDIR, defaulting to `/tmp'. | |
| 1356 | |
| 1357 ** The function load-average now accepts an optional argument | |
| 1358 USE-FLOATS. If it is non-nil, the load average values are returned as | |
| 1359 floating point numbers, rather than as integers to be divided by 100. | |
| 1360 | |
| 1361 ** The `make-event' function now supports the TYPE and PLIST | |
| 1362 arguments, which can be used to create various events from Lisp. See | |
| 1363 the documentation for details. | |
| 1364 | |
| 1365 ** `function-interactive' is a new function that returns the | |
| 1366 interactive specification of a funcallable object. | |
| 1367 | |
| 1368 ** The new `lmessage' function allows printing of a formatted message | |
| 1369 with a particular label. | |
| 1370 | |
| 1371 (lmessage 'progress "Processing... %d" counter) | |
| 1372 | |
| 1373 This function is more convenient than `display-message' because it | |
| 1374 automatically applies `format' to its arguments. | |
| 1375 | |
| 1376 ** The new `lwarn' function, analogous to `lmessage', allows printing | |
| 1377 a formatted warning, with a non-default CLASS or LABEL. | |
| 1378 | |
| 1379 ** The new function `split-path' can now be used to explode the | |
| 1380 components of a colon-separated search path into a list. | |
| 1381 | |
| 1382 (split-path "foo:bar") | |
| 1383 => ("foo" "bar") | |
| 1384 | |
| 1385 ** Specifiers and symbols whose value is a specifier are now allowed | |
| 1386 as modeline specifications. | |
| 1387 | |
| 1388 ** defcustom now accepts the keyword `:version'. Use this to specify | |
| 1389 in which version of Emacs a certain variable's default value changed. | |
| 1390 For example, | |
| 1391 | |
| 1392 (defcustom foo-max 34 "*Maximum number of foo's allowed." | |
| 1393 :type 'integer | |
| 1394 :group 'foo | |
| 1395 :version "21.0") | |
| 1396 | |
| 1397 This information is used to control the customize-changed-options | |
| 1398 command. | |
| 1399 | |
| 1400 ** The line number tracking in modeline is now efficient, even for | |
| 1401 very large buffers. This is achieved by caching the line numbers of | |
| 1402 recent buffer positions, and reusing them. This cache is used only in | |
| 1403 the buffers where `line-number-mode' is in effect. | |
| 1404 | |
| 1405 ** When the new GNU Malloc aka Doug Lea Malloc is available, it will | |
| 1406 be used. This should result in better performance on Linux systems | |
| 1407 with libc6. | |
| 1408 | |
| 1409 ** The code XEmacs uses to assemble its various paths into the | |
| 1410 directory hierarchy has been rewritten to support the package system. | |
| 1411 Look under "Startup Paths" in the Info documentation for more | |
| 1412 information. | |
| 1413 | |
| 1414 *** site-lisp is no longer part of the load-path by default. | |
| 1415 Its use is deprecated, but you can specify --with-site-lisp=yes at the | |
| 1416 configure command line to get it back. | |
| 1417 | |
| 1418 *** `Info-default-directory-list' is now obsolete. If you want to | |
| 1419 change the path which XEmacs uses to search for info files, set | |
| 1420 `Info-directory-list' instead. | |
| 464 | 1421 |
| 1422 | |
| 1423 * For older news, see the file ONEWS. |