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1 | GNU Emacs NEWS -- history of user-visible changes. |
2 | ||
acaf905b | 3 | Copyright (C) 2001-2012 Free Software Foundation, Inc. |
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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 22. | |
10 | ||
11 | See files NEWS.21, NEWS.20, NEWS.19, NEWS.18, and NEWS.1-17 for changes | |
12 | 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 | \f | |
17 | * About external Lisp packages | |
18 | ||
19 | When you upgrade to Emacs 22 from a previous version, some older | |
20 | versions of external Lisp packages are known to behave badly. | |
21 | So in general, it is recommended that you upgrade to the latest | |
22 | versions of any external Lisp packages that you are using. | |
23 | ||
24 | You should also be aware that many Lisp packages have been included | |
25 | with Emacs 22 (see the extensive list below), and you should remove | |
26 | any older versions of these packages to ensure that the Emacs 22 | |
27 | version is used. You can use M-x list-load-path-shadows to find such | |
28 | older packages. | |
29 | ||
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30 | Some specific packages that are known to cause problems are given |
31 | below. Emacs tries to warn you about these through `bad-packages-alist'. | |
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32 | |
33 | ** Semantic (used by CEDET, ECB, JDEE): upgrade to latest version. | |
34 | ||
35 | ** cua.el, cua-mode.el: remove old versions. | |
163a6901 | 36 | |
01140829 | 37 | \f |
ac323283 MB |
38 | * Changes in Emacs 22.3 |
39 | ||
40 | ** Support for several obsolete platforms will be removed in the next | |
41 | major version of Emacs: Apollo, Acorn, Alliant, Amdahl, Altos 3068, | |
42 | Bull DPX/2, Bull SPS-7, AT&T UNIX 7300, AT&T 3b, Aviion Berkeley 4.1 | |
43 | to 4.3, Celerity, Clipper, Convergent S series, Convex, Cydra, DG/UX, | |
44 | Dual, Elxsi, ESIX, Fujitsu F301, GEC 63, Gould, Honeywell XPS100, | |
45 | i860, IBM ps/2 aix386, Harris CXUX, Harris Night Hawk 1200/3000, | |
46 | Harris Power PC, HP 9000 series 200 or 300, HLH Orion, Hitachi | |
47 | SR2001/SR2201, IBM PS/2, Integrated Solutions 386, Integrated | |
48 | Solutions Optimum V, Iris, Irix < v6, ISC Unix, ISI 68000, Masscomp | |
49 | 5000, Megatest 68000, Motorola System V/88, ns16000, National | |
50 | Semiconductor 32000, osf1 (s/osf*) Paragon i860, PFU A-series, Plexus, | |
51 | Pyramid, RTU 3.0, RISCiX SCO 3.2, sh3el, Sinix, Stride, Sun 1-3, Sun | |
52 | RoadRunner, Sequent Symmetry, Sony News, SunOS 4, System V rel 0 to 3, | |
53 | Tadpole 68k machines, tahoe, Tandem Integrity S2, targon31, Tektronix, | |
54 | TI Nu, NCR Tower 32, U-station, Ultrix, UMAX, UniPlus 5.2, Whitechapel | |
55 | Computer Works MG1, Wicat, and Xenix. | |
56 | ||
57 | *** Support for systems without alloca will be removed. | |
58 | ||
59 | *** Support for Sun windows will be removed. | |
60 | ||
61 | *** Support for VMS will be removed. | |
62 | ||
e405fa5f RS |
63 | * Incompatible Editing Changes in Emacs 22.3 |
64 | ||
65 | ** The following input methods were removed in Emacs 22.2, but this was | |
9a930d75 | 66 | not advertised: danish-alt-postfix, esperanto-alt-postfix, |
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67 | finnish-alt-postfix, german-alt-postfix, icelandic-alt-postfix, |
68 | norwegian-alt-postfix, scandinavian-alt-postfix, spanish-alt-postfix, | |
69 | and swedish-alt-postfix. Use the versions without "alt-", which are | |
70 | identical. | |
71 | ||
72 | \f | |
01140829 MB |
73 | * Installation Changes in Emacs 22.2 |
74 | ||
9aecacd0 MB |
75 | ** Emacs is now licensed under the GNU GPL version 3 (or later). |
76 | ||
472fd4dc GM |
77 | ** Support for GNU/kFreeBSD (GNU userland and FreeBSD kernel) was added. |
78 | ||
56388398 MB |
79 | ** Deprecated machine types and operating systems |
80 | ||
81 | Certain machine types and operating systems have been deprecated. On | |
82 | these systems, configure will print a warning and exit, and you must | |
83 | edit the configure script for compilation to proceed. The deprecated | |
84 | systems will not be supported at all in Emacs 23. We are not aware of | |
85 | anyone running Emacs on these systems; if you are, please email | |
86 | emacs-devel@gnu.org to take it off the list of deprecated systems. | |
87 | ||
88 | *** Deprecated machine types | |
89 | pmax, hp9000s300, ibm370aix, ncr386, ews4800, mips-siemens, powerpcle, | |
90 | and tandem-s2 | |
91 | ||
92 | *** Deprecated operating systems | |
93 | bsd386, bsdos2-1, bsdos2, bsdos3, bsdos4, bsd4-1, bsd4-2, bsd4-3, | |
94 | usg5-0, usg5-2-2, usg5-2, usg5-3, ultrix4-3, 386bsd, hpux, hpux8, | |
95 | hpux9, hpux9shr, hpux10, hpux10-20, aix3-1, aix3-2-5, aix3-2, aix4-1, | |
96 | nextstep, ux4800, uxpds, and uxpv | |
97 | ||
01140829 MB |
98 | * Changes in Emacs 22.2 |
99 | ||
56388398 MB |
100 | ** `describe-project' is renamed to `describe-gnu-project'. |
101 | ||
102 | ** `view-todo' is renamed to `view-emacs-todo'. | |
103 | ||
b17f53ab MB |
104 | ** `find-name-dired' now uses -iname rather than -name |
105 | for case-insensitive filesystems. The default behavior is determined | |
106 | by the value of `read-file-name-completion-ignore-case'; if you don't | |
107 | like that, customize the value of the new option `find-name-arg'. | |
108 | ||
01140829 MB |
109 | ** In Image mode, whenever the displayed image is wider and/or higher |
110 | than the window, the usual keys for moving the cursor cause the image | |
111 | to be scrolled horizontally or vertically instead. | |
112 | ||
51fb064b MB |
113 | ** Emacs can use stock icons in the tool bar when compiled with Gtk+. |
114 | However, this feature is disabled by default. To enable it, put | |
115 | ||
116 | (setq icon-map-list '(x-gtk-stock-map)) | |
117 | ||
118 | in your .emacs or some other startup file. For more information, see | |
119 | the documentation for the two variables icon-map-list and x-gtk-stock-map. | |
120 | ||
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121 | ** Scrollbars follow the system theme on Windows XP and later. |
122 | Windows XP introduced themed scrollbars, but applications have to take | |
123 | special steps to use them. Emacs now has the appropriate resources linked | |
124 | in to make it use the scrollbars from the system theme. | |
125 | ||
fdc90613 | 126 | ** focus-follows-mouse defaults to nil on MS Windows. |
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127 | Previously this variable was incorrectly documented as having no effect |
128 | on MS Windows, and the default was inappropriate for the majority of | |
fffa137c | 129 | Windows installations. Users of software which modifies the behavior of |
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130 | Windows to cause focus to follow the mouse will now need to explicitly set |
131 | this variable. | |
132 | ||
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133 | ** `bad-packages-alist' will warn about external packages that are known |
134 | to cause problems in this version of Emacs. | |
135 | ||
136 | ** The values of `dired-recursive-deletes' and `dired-recursive-copies' | |
137 | have been changed to `top'. This means that the user is asked once, | |
138 | before deleting/copying the indicated directory recursively. | |
139 | ||
140 | ** `browse-url-emacs' loads a URL into an Emacs buffer. Handy for *.el URLs. | |
141 | ||
1af74d06 MB |
142 | ** The command gdba has been removed as gdb works now for those cases where it |
143 | was needed. In text command mode, if you have problems before execution has | |
144 | started, use M-x gud-gdb. | |
145 | ||
fdc90613 MB |
146 | ** desktop.el now detects conflicting uses of the desktop file. |
147 | When loading the desktop, desktop.el can now detect that the file is already | |
148 | in use. The default behavior is to ask the user what to do, but you can | |
149 | customize it with the new option `desktop-load-locked-desktop'. When saving, | |
150 | desktop.el warns about attempts to overwrite a desktop file if it determines | |
151 | that the desktop being saved is not an update of the one on disk. | |
152 | ||
b03f96dc MB |
153 | ** Compilation mode now correctly respects the value of |
154 | `compilation-scroll-output' between invocations. Previously, output | |
155 | was mistakenly scrolled on compiles after the first. Customize | |
156 | `compilation-scroll-output' if you want to retain the scrolling. | |
157 | ||
352e0e25 | 158 | ** `font-lock-comment-face' no longer differs from the default on |
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159 | displays with fewer than 16 colors and dark background (e.g. older |
160 | xterms and the Linux console). On such displays, only the comment | |
161 | delimiters will appear to be fontified (in the new face | |
162 | `font-lock-comment-delimiter-face'). To restore the old appearance, | |
163 | customize `font-lock-comment-face'. Another alternative is to use a | |
164 | newer terminal emulator that supports more colors (256 is now common). | |
165 | For example, for xterm compatible emulators that support 256 colors, | |
ee7683eb | 166 | you can run emacs like this: |
5bc6ddff MB |
167 | env TERM=xterm-256color emacs -nw |
168 | (This was new in Emacs 22.1, but was not described. In Emacs 22.1 | |
169 | this also happened for terminals with a light background, that is not | |
170 | the case anymore). | |
352e0e25 | 171 | |
01140829 MB |
172 | * New Modes and Packages in Emacs 22.2 |
173 | ||
37cc095b MB |
174 | ** bibtex-style-mode helps you write BibTeX's *.bst files. |
175 | ||
01140829 MB |
176 | ** The new package css-mode.el provides a major mode for editing CSS files. |
177 | ||
858a9480 DN |
178 | ** The new package vera-mode.el provides a major mode for editing Vera files. |
179 | ||
47854a55 MB |
180 | ** The new package verilog-mode.el provides a major mode for editing Verilog files. |
181 | ||
01140829 | 182 | ** The new package socks.el implements the SOCKS v5 protocol. |
782f8379 | 183 | |
d6d25ba8 DN |
184 | ** VC |
185 | ||
2f12b713 MB |
186 | *** VC backends can provide completion of revision names. |
187 | ||
56388398 | 188 | *** VC backends can provide extra menu entries to the "Version Control" menu. |
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189 | This can be used to add menu entries for backend specific functions. |
190 | ||
191 | *** VC has some support for Mercurial (Hg). | |
192 | ||
193 | *** VC has some support for Monotone (Mtn). | |
d6d25ba8 | 194 | |
37cc095b MB |
195 | *** VC has some support for Bazaar (Bzr). |
196 | ||
2f12b713 MB |
197 | *** VC has some support for Git. |
198 | ||
1bad168e MB |
199 | * Incompatible Lisp Changes in Emacs 22.2 |
200 | ||
201 | ** shell.el no longer defines the aliases `dirtrack-toggle' and | |
202 | `dirtrack-mode' for `shell-dirtrack-mode'. These names were removed | |
203 | because they clash with commands provided by dirtrack.el. Use | |
204 | `shell-dirtrack-mode' instead. | |
205 | ||
9b482dcb CY |
206 | * Lisp Changes in Emacs 22.2. |
207 | ||
fdc90613 | 208 | ** Frame-local variables are deprecated and are slated for removal. |
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209 | They can easily be emulated. Rather than calling `make-variable-frame-local' |
210 | and accessing the variable value directly, explicitly check for a | |
211 | frame-parameter, and if there is one, use its value in preference to | |
83c71661 | 212 | that of the variable. Note that buffer-local values should take |
9f014775 | 213 | precedence over frame-local ones, so you may wish to check `local-variable-p' |
83c71661 | 214 | first. |
c12ecb0a | 215 | |
7f22a765 | 216 | ** The function invisible-p returns non-nil if the character |
6554da99 | 217 | after a specified position is invisible. |
7f22a765 | 218 | |
7f22a765 MB |
219 | ** inhibit-modification-hooks is bound to t while running modification hooks. |
220 | As a happy consequence, after-change-functions and before-change-functions | |
221 | are not bound to nil any more while running an (after|before)-change-function. | |
222 | ||
9b482dcb CY |
223 | ** New function `window-full-width-p' returns t if a window is as wide |
224 | as its frame. | |
225 | ||
226 | ** The new function `image-refresh' refreshes all images associated | |
227 | with a given image specification. | |
228 | ||
c12ecb0a MB |
229 | ** The new function `combine-and-quote-strings' concatenates a list of strings |
230 | using a specified separator. If a string contains double quotes, they | |
231 | are escaped in the output. | |
232 | ||
233 | ** The new function `split-string-and-unquote' performs the inverse operation to | |
234 | `combine-and-quote-strings', i.e. splits a single string into a list | |
235 | of strings, undoing any quoting added by `combine-and-quote-strings'. | |
236 | (For some separator/string combinations, the original strings cannot | |
237 | be recovered.) | |
37cc095b | 238 | |
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239 | \f |
240 | * Installation Changes in Emacs 22.1 | |
241 | ||
242 | ** You can build Emacs with Gtk+ widgets by specifying `--with-x-toolkit=gtk' | |
243 | when you run configure. This requires Gtk+ 2.4 or newer. This port | |
244 | provides a way to display multilingual text in menus (with some caveats). | |
245 | ||
246 | ** The Emacs Lisp Reference Manual is now part of the distribution. | |
247 | ||
248 | The Emacs Lisp Reference Manual in Info format is built as part of the | |
249 | Emacs build procedure and installed together with the Emacs User | |
250 | Manual. A menu item was added to the menu bar to make it easily | |
251 | accessible (Help->More Manuals->Emacs Lisp Reference). | |
252 | ||
253 | ** The Introduction to Programming in Emacs Lisp manual is now part of | |
254 | the distribution. | |
255 | ||
256 | This manual is now part of the standard distribution and is installed, | |
257 | together with the Emacs User Manual, into the Info directory. A menu | |
258 | item was added to the menu bar to make it easily accessible | |
259 | (Help->More Manuals->Introduction to Emacs Lisp). | |
260 | ||
261 | ** Leim is now part of the Emacs distribution. | |
262 | You no longer need to download a separate tarball in order to build | |
263 | Emacs with Leim. | |
264 | ||
265 | ** Support for MacOS X was added. | |
266 | See the files mac/README and mac/INSTALL for build instructions. | |
267 | ||
268 | ** Mac OS 9 port now uses the Carbon API by default. You can also | |
269 | create a non-Carbon build by specifying `NonCarbon' as a target. See | |
270 | the files mac/README and mac/INSTALL for build instructions. | |
271 | ||
272 | ** Support for a Cygwin build of Emacs was added. | |
273 | ||
274 | ** Support for GNU/Linux systems on X86-64 machines was added. | |
275 | ||
276 | ** Support for GNU/Linux systems on S390 machines was added. | |
277 | ||
278 | ** Support for GNU/Linux systems on Tensilica Xtensa machines was added. | |
279 | ||
280 | ** Support for FreeBSD/Alpha has been added. | |
281 | ||
282 | ** New translations of the Emacs Tutorial are available in the | |
ee7683eb | 283 | following languages: Brazilian Portuguese, Bulgarian, Chinese (both |
782f8379 GM |
284 | with simplified and traditional characters), French, Russian, and |
285 | Italian. Type `C-u C-h t' to choose one of them in case your language | |
286 | setup doesn't automatically select the right one. | |
287 | ||
288 | ** New translations of the Emacs reference card are available in the | |
ee7683eb | 289 | Brazilian Portuguese and Russian. The corresponding PostScript files |
782f8379 GM |
290 | are also included. |
291 | ||
292 | ** A French translation of the `Emacs Survival Guide' is available. | |
293 | ||
294 | ** Emacs now supports new configure options `--program-prefix', | |
295 | `--program-suffix' and `--program-transform-name' that affect the names of | |
296 | installed programs. | |
297 | ||
298 | ** By default, Emacs now uses a setgid helper program to update game | |
299 | scores. The directory ${localstatedir}/games/emacs is the normal | |
300 | place for game scores to be stored. You can control this with the | |
301 | configure option `--with-game-dir'. The specific user that Emacs uses | |
302 | to own the game scores is controlled by `--with-game-user'. If access | |
303 | to a game user is not available, then scores will be stored separately | |
304 | in each user's home directory. | |
305 | ||
306 | ** Emacs now includes support for loading image libraries on demand. | |
307 | (Currently this feature is only used on MS Windows.) You can configure | |
308 | the supported image types and their associated dynamic libraries by | |
309 | setting the variable `image-library-alist'. | |
310 | ||
311 | ** Emacs can now be built without sound support. | |
312 | ||
313 | ** Emacs Lisp source files are compressed by default if `gzip' is available. | |
314 | ||
315 | ** All images used in Emacs have been consolidated in etc/images and subdirs. | |
316 | See also the changes to `find-image', documented below. | |
317 | ||
318 | ** Emacs comes with a new set of icons. | |
319 | These icons are displayed on the taskbar and/or titlebar when Emacs | |
320 | runs in a graphical environment. Source files for these icons can be | |
321 | found in etc/images/icons. (You can't change the icons displayed by | |
322 | Emacs by changing these files directly. On X, the icon is compiled | |
323 | into the Emacs executable; see gnu.h in the source tree. On MS | |
324 | Windows, see nt/icons/emacs.ico.) | |
325 | ||
326 | ** The `emacsserver' program has been removed, replaced with Lisp code. | |
327 | ||
328 | ** The `yow' program has been removed. | |
329 | Use the corresponding Emacs feature instead. | |
330 | ||
331 | ** The Emacs terminal emulation in term.el uses a different terminfo name. | |
332 | The Emacs terminal emulation in term.el now uses "eterm-color" as its | |
333 | terminfo name, since term.el now supports color. | |
334 | ||
335 | ** The script etc/emacs-buffer.gdb can be used with gdb to retrieve the | |
336 | contents of buffers from a core dump and save them to files easily, should | |
337 | Emacs crash. | |
338 | ||
339 | ** Building with -DENABLE_CHECKING does not automatically build with union | |
340 | types any more. Add -DUSE_LISP_UNION_TYPE if you want union types. | |
341 | ||
342 | ** When pure storage overflows while dumping, Emacs now prints how | |
343 | much pure storage it will approximately need. | |
344 | ||
345 | \f | |
346 | * Startup Changes in Emacs 22.1 | |
347 | ||
348 | ** Init file changes | |
349 | If the init file ~/.emacs does not exist, Emacs will try | |
350 | ~/.emacs.d/init.el or ~/.emacs.d/init.elc. Likewise, if the shell init file | |
351 | ~/.emacs_SHELL is not found, Emacs will try ~/.emacs.d/init_SHELL.sh. | |
352 | ||
353 | ** Emacs can now be invoked in full-screen mode on a windowed display. | |
354 | When Emacs is invoked on a window system, the new command-line options | |
355 | `--fullwidth', `--fullheight', and `--fullscreen' produce a frame | |
356 | whose width, height, or both width and height take up the entire | |
357 | screen size. (For now, this does not work with some window managers.) | |
358 | ||
359 | ** Emacs now displays a splash screen by default even if command-line | |
360 | arguments were given. The new command-line option --no-splash | |
361 | disables the splash screen; see also the variable | |
362 | `inhibit-splash-screen' (which is also aliased as | |
363 | `inhibit-startup-message'). | |
364 | ||
365 | ** New user option `inhibit-startup-buffer-menu'. | |
366 | When loading many files, for instance with `emacs *', Emacs normally | |
367 | displays a buffer menu. This option turns the buffer menu off. | |
368 | ||
369 | ** New command line option -nbc or --no-blinking-cursor disables | |
370 | the blinking cursor on graphical terminals. | |
371 | ||
372 | ** The option --script FILE runs Emacs in batch mode and loads FILE. | |
373 | It is useful for writing Emacs Lisp shell script files, because they | |
374 | can start with this line: | |
375 | ||
376 | #!/usr/bin/emacs --script | |
377 | ||
378 | ** The -f option, used from the command line to call a function, | |
379 | now reads arguments for the function interactively if it is | |
380 | an interactively callable function. | |
381 | ||
382 | ** The option --directory DIR now modifies `load-path' immediately. | |
383 | Directories are added to the front of `load-path' in the order they | |
384 | appear on the command line. For example, with this command line: | |
385 | ||
386 | emacs -batch -L .. -L /tmp --eval "(require 'foo)" | |
387 | ||
388 | Emacs looks for library `foo' in the parent directory, then in /tmp, then | |
389 | in the other directories in `load-path'. (-L is short for --directory.) | |
390 | ||
391 | ** When you specify a frame size with --geometry, the size applies to | |
392 | all frames you create. A position specified with --geometry only | |
393 | affects the initial frame. | |
394 | ||
395 | ** Emacs built for MS-Windows now behaves like Emacs on X does, | |
396 | with respect to its frame position: if you don't specify a position | |
397 | (in your .emacs init file, in the Registry, or with the --geometry | |
398 | command-line option), Emacs leaves the frame position to the Windows' | |
399 | window manager. | |
400 | ||
401 | ** The command line option --no-windows has been changed to | |
402 | --no-window-system. The old one still works, but is deprecated. | |
403 | ||
404 | ** If the environment variable DISPLAY specifies an unreachable X display, | |
405 | Emacs will now startup as if invoked with the --no-window-system option. | |
406 | ||
407 | ** Emacs now reads the standard abbrevs file ~/.abbrev_defs | |
408 | automatically at startup, if it exists. When Emacs offers to save | |
409 | modified buffers, it saves the abbrevs too if they have changed. It | |
410 | can do this either silently or asking for confirmation first, | |
411 | according to the value of `save-abbrevs'. | |
412 | ||
413 | ** New command line option -Q or --quick. | |
414 | This is like using -q --no-site-file, but in addition it also disables | |
415 | the fancy startup screen. | |
416 | ||
417 | ** New command line option -D or --basic-display. | |
418 | Disables the menu-bar, the tool-bar, the scroll-bars, tool tips, and | |
419 | the blinking cursor. | |
420 | ||
421 | ** The default is now to use a bitmap as the icon. | |
422 | The command-line options --icon-type, -i have been replaced with | |
423 | options --no-bitmap-icon, -nbi to turn the bitmap icon off. | |
424 | ||
425 | ** If the environment variable EMAIL is defined, Emacs now uses its value | |
426 | to compute the default value of `user-mail-address', in preference to | |
427 | concatenation of `user-login-name' with the name of your host machine. | |
428 | ||
429 | \f | |
430 | * Incompatible Editing Changes in Emacs 22.1 | |
431 | ||
432 | ** You can now follow links by clicking Mouse-1 on the link. | |
433 | ||
434 | See below for more details. | |
435 | ||
436 | ** When the undo information of the current command gets really large | |
437 | (beyond the value of `undo-outer-limit'), Emacs discards it and warns | |
438 | you about it. | |
439 | ||
440 | ** When Emacs prompts for file names, SPC no longer completes the file name. | |
441 | This is so filenames with embedded spaces could be input without the | |
442 | need to quote the space with a C-q. The underlying changes in the | |
443 | keymaps that are active in the minibuffer are described below under | |
444 | "New keymaps for typing file names". | |
445 | ||
5a95db21 | 446 | If you want the old behavior back, add these two key bindings to your |
3ada466d EZ |
447 | ~/.emacs init file: |
448 | ||
449 | (define-key minibuffer-local-filename-completion-map | |
450 | " " 'minibuffer-complete-word) | |
451 | (define-key minibuffer-local-must-match-filename-map | |
452 | " " 'minibuffer-complete-word) | |
453 | ||
782f8379 GM |
454 | ** The completion commands TAB, SPC and ? in the minibuffer apply only |
455 | to the text before point. If there is text in the buffer after point, | |
456 | it remains unchanged. | |
457 | ||
458 | ** In incremental search, C-w is changed. M-%, C-M-w and C-M-y are special. | |
459 | ||
460 | See below under "incremental search changes". | |
461 | ||
462 | ** M-g is now a prefix key. | |
463 | M-g g and M-g M-g run goto-line. | |
464 | M-g n and M-g M-n run next-error (like C-x `). | |
465 | M-g p and M-g M-p run previous-error. | |
466 | ||
467 | ** C-u M-g M-g switches to the most recent previous buffer, | |
468 | and goes to the specified line in that buffer. | |
469 | ||
470 | When goto-line starts to execute, if there's a number in the buffer at | |
471 | point then it acts as the default argument for the minibuffer. | |
472 | ||
473 | ** M-o now is the prefix key for setting text properties; | |
474 | M-o M-o requests refontification. | |
475 | ||
476 | ** C-x C-f RET (find-file), typing nothing in the minibuffer, is no longer | |
477 | a special case. | |
478 | ||
479 | Since the default input is the current directory, this has the effect | |
480 | of specifying the current directory. Normally that means to visit the | |
481 | directory with Dired. | |
482 | ||
483 | You can get the old behavior by typing C-x C-f M-n RET, which fetches | |
484 | the actual file name into the minibuffer. | |
485 | ||
486 | ** In Dired's ! command (dired-do-shell-command), `*' and `?' now | |
487 | control substitution of the file names only when they are surrounded | |
488 | by whitespace. This means you can now use them as shell wildcards | |
489 | too. If you want to use just plain `*' as a wildcard, type `*""'; the | |
490 | doublequotes make no difference in the shell, but they prevent | |
491 | special treatment in `dired-do-shell-command'. | |
492 | ||
782f8379 GM |
493 | ** The info-search bindings on C-h C-f, C-h C-k and C-h C-i |
494 | have been moved to C-h F, C-h K and C-h S. | |
495 | ||
496 | ** `apply-macro-to-region-lines' now operates on all lines that begin | |
497 | in the region, rather than on all complete lines in the region. | |
498 | ||
499 | ** line-move-ignore-invisible now defaults to t. | |
500 | ||
501 | ** Adaptive filling misfeature removed. | |
502 | It no longer treats `NNN.' or `(NNN)' as a prefix. | |
503 | ||
504 | ** The old bindings C-M-delete and C-M-backspace have been deleted, | |
505 | since there are situations where one or the other will shut down | |
506 | the operating system or your X server. | |
507 | ||
508 | ** The register compatibility key bindings (deprecated since Emacs 19) | |
509 | have been removed: | |
510 | C-x / point-to-register (Use: C-x r SPC) | |
511 | C-x j jump-to-register (Use: C-x r j) | |
512 | C-x x copy-to-register (Use: C-x r s) | |
513 | C-x g insert-register (Use: C-x r i) | |
514 | ||
515 | \f | |
516 | * Editing Changes in Emacs 22.1 | |
517 | ||
518 | ** The max size of buffers and integers has been doubled. | |
519 | On 32bit machines, it is now 256M (i.e. 268435455). | |
520 | ||
521 | ** !MEM FULL! at the start of the mode line indicates that Emacs | |
522 | cannot get any more memory for Lisp data. This often means it could | |
523 | crash soon if you do things that use more memory. On most systems, | |
524 | killing buffers will get out of this state. If killing buffers does | |
525 | not make !MEM FULL! disappear, you should save your work and start | |
526 | a new Emacs. | |
527 | ||
528 | ** `undo-only' does an undo which does not redo any previous undo. | |
529 | ||
530 | ** Yanking text now discards certain text properties that can | |
531 | be inconvenient when you did not expect them. The variable | |
532 | `yank-excluded-properties' specifies which ones. Insertion | |
533 | of register contents and rectangles also discards these properties. | |
534 | ||
535 | ** New command `kill-whole-line' kills an entire line at once. | |
536 | By default, it is bound to C-S-<backspace>. | |
537 | ||
538 | ** M-SPC (just-one-space) when given a numeric argument N | |
539 | converts whitespace around point to N spaces. | |
540 | ||
541 | ** You can now switch buffers in a cyclic order with C-x C-left | |
542 | (previous-buffer) and C-x C-right (next-buffer). C-x left and | |
543 | C-x right can be used as well. The functions keep a different buffer | |
544 | cycle for each frame, using the frame-local buffer list. | |
545 | ||
546 | ** C-x 5 C-o displays a specified buffer in another frame | |
547 | but does not switch to that frame. It's the multi-frame | |
548 | analogue of C-x 4 C-o. | |
549 | ||
550 | ** `special-display-buffer-names' and `special-display-regexps' now | |
551 | understand two new boolean pseudo-frame-parameters `same-frame' and | |
552 | `same-window'. | |
553 | ||
554 | ** New commands to operate on pairs of open and close characters: | |
555 | `insert-pair', `delete-pair', `raise-sexp'. | |
556 | ||
557 | ** M-x setenv now expands environment variable references. | |
558 | ||
559 | Substrings of the form `$foo' and `${foo}' in the specified new value | |
560 | now refer to the value of environment variable foo. To include a `$' | |
561 | in the value, use `$$'. | |
562 | ||
563 | ** The default values of paragraph-start and indent-line-function have | |
564 | been changed to reflect those used in Text mode rather than those used | |
565 | in Paragraph-Indent Text mode. | |
566 | ||
567 | ** The default for the paper size (variable ps-paper-type) is taken | |
568 | from the locale. | |
569 | ||
570 | ** Help command changes: | |
571 | ||
572 | *** Changes in C-h bindings: | |
573 | ||
574 | C-h e displays the *Messages* buffer. | |
575 | ||
576 | C-h d runs apropos-documentation. | |
577 | ||
578 | C-h r visits the Emacs Manual in Info. | |
579 | ||
580 | C-h followed by a control character is used for displaying files | |
581 | that do not change: | |
582 | ||
583 | C-h C-f displays the FAQ. | |
584 | C-h C-e displays the PROBLEMS file. | |
585 | ||
586 | The info-search bindings on C-h C-f, C-h C-k and C-h C-i | |
587 | have been moved to C-h F, C-h K and C-h S. | |
588 | ||
589 | C-h c, C-h k, C-h w, and C-h f now handle remapped interactive commands. | |
590 | - C-h c and C-h k report the actual command (after possible remapping) | |
591 | run by the key sequence. | |
592 | - C-h w and C-h f on a command which has been remapped now report the | |
593 | command it is remapped to, and the keys which can be used to run | |
594 | that command. | |
595 | ||
596 | For example, if C-k is bound to kill-line, and kill-line is remapped | |
597 | to new-kill-line, these commands now report: | |
598 | - C-h c and C-h k C-k reports: | |
599 | C-k runs the command new-kill-line | |
600 | - C-h w and C-h f kill-line reports: | |
601 | kill-line is remapped to new-kill-line which is on C-k, <deleteline> | |
602 | - C-h w and C-h f new-kill-line reports: | |
603 | new-kill-line is on C-k | |
604 | ||
605 | *** The apropos commands now accept a list of words to match. | |
606 | When more than one word is specified, at least two of those words must | |
607 | be present for an item to match. Regular expression matching is still | |
608 | available. | |
609 | ||
610 | *** The new option `apropos-sort-by-scores' causes the matching items | |
611 | to be sorted according to their score. The score for an item is a | |
612 | number calculated to indicate how well the item matches the words or | |
613 | regular expression that you entered to the apropos command. The best | |
614 | match is listed first, and the calculated score is shown for each | |
615 | matching item. | |
616 | ||
617 | *** Help commands `describe-function' and `describe-key' now show function | |
618 | arguments in lowercase italics on displays that support it. To change the | |
619 | default, customize face `help-argument-name' or redefine the function | |
620 | `help-default-arg-highlight'. | |
621 | ||
622 | *** C-h v and C-h f commands now include a hyperlink to the C source for | |
623 | variables and functions defined in C (if the C source is available). | |
624 | ||
625 | *** Help mode now only makes hyperlinks for faces when the face name is | |
626 | preceded or followed by the word `face'. It no longer makes | |
627 | hyperlinks for variables without variable documentation, unless | |
628 | preceded by one of the words `variable' or `option'. It now makes | |
629 | hyperlinks to Info anchors (or nodes) if the anchor (or node) name is | |
630 | enclosed in single quotes and preceded by `info anchor' or `Info | |
631 | anchor' (in addition to earlier `info node' and `Info node'). In | |
632 | addition, it now makes hyperlinks to URLs as well if the URL is | |
633 | enclosed in single quotes and preceded by `URL'. | |
634 | ||
635 | *** The new command `describe-char' (C-u C-x =) pops up a buffer with | |
636 | description various information about a character, including its | |
637 | encodings and syntax, its text properties, how to input, overlays, and | |
638 | widgets at point. You can get more information about some of them, by | |
639 | clicking on mouse-sensitive areas or moving there and pressing RET. | |
640 | ||
641 | *** The command `list-text-properties-at' has been deleted because | |
642 | C-u C-x = gives the same information and more. | |
643 | ||
644 | *** New command `display-local-help' displays any local help at point | |
645 | in the echo area. It is bound to `C-h .'. It normally displays the | |
646 | same string that would be displayed on mouse-over using the | |
647 | `help-echo' property, but, in certain cases, it can display a more | |
648 | keyboard oriented alternative. | |
649 | ||
73187b26 | 650 | *** New user option `help-at-pt-display-when-idle' allows you to |
782f8379 GM |
651 | automatically show the help provided by `display-local-help' on |
652 | point-over, after suitable idle time. The amount of idle time is | |
653 | determined by the user option `help-at-pt-timer-delay' and defaults | |
654 | to one second. This feature is turned off by default. | |
655 | ||
656 | ** Mark command changes: | |
657 | ||
658 | *** A prefix argument is no longer required to repeat a jump to a | |
236a4178 GM |
659 | previous mark if you set `set-mark-command-repeat-pop' to t. I.e. C-u |
660 | C-SPC C-SPC C-SPC ... cycles through the mark ring. Use C-u C-u C-SPC | |
661 | to set the mark immediately after a jump. | |
782f8379 GM |
662 | |
663 | *** Marking commands extend the region when invoked multiple times. | |
664 | ||
665 | If you type C-M-SPC (mark-sexp), M-@ (mark-word), M-h | |
666 | (mark-paragraph), or C-M-h (mark-defun) repeatedly, the marked region | |
667 | extends each time, so you can mark the next two sexps with M-C-SPC | |
668 | M-C-SPC, for example. This feature also works for | |
669 | mark-end-of-sentence, if you bind that to a key. It also extends the | |
670 | region when the mark is active in Transient Mark mode, regardless of | |
671 | the last command. To start a new region with one of marking commands | |
672 | in Transient Mark mode, you can deactivate the active region with C-g, | |
673 | or set the new mark with C-SPC. | |
674 | ||
675 | *** Some commands do something special in Transient Mark mode when the | |
676 | mark is active--for instance, they limit their operation to the | |
677 | region. Even if you don't normally use Transient Mark mode, you might | |
678 | want to get this behavior from a particular command. There are two | |
679 | ways you can enable Transient Mark mode and activate the mark, for one | |
680 | command only. | |
681 | ||
682 | One method is to type C-SPC C-SPC; this enables Transient Mark mode | |
683 | and sets the mark at point. The other method is to type C-u C-x C-x. | |
684 | This enables Transient Mark mode temporarily but does not alter the | |
685 | mark or the region. | |
686 | ||
687 | After these commands, Transient Mark mode remains enabled until you | |
688 | deactivate the mark. That typically happens when you type a command | |
689 | that alters the buffer, but you can also deactivate the mark by typing | |
690 | C-g. | |
691 | ||
692 | *** Movement commands `beginning-of-buffer', `end-of-buffer', | |
693 | `beginning-of-defun', `end-of-defun' do not set the mark if the mark | |
694 | is already active in Transient Mark mode. | |
695 | ||
696 | *** M-h (mark-paragraph) now accepts a prefix arg. | |
697 | ||
698 | With positive arg, M-h marks the current and the following paragraphs; | |
699 | if the arg is negative, it marks the current and the preceding | |
700 | paragraphs. | |
701 | ||
702 | ** Incremental Search changes: | |
703 | ||
704 | *** M-% typed in isearch mode invokes `query-replace' or | |
705 | `query-replace-regexp' (depending on search mode) with the current | |
706 | search string used as the string to replace. | |
707 | ||
708 | *** C-w in incremental search now grabs either a character or a word, | |
709 | making the decision in a heuristic way. This new job is done by the | |
710 | command `isearch-yank-word-or-char'. To restore the old behavior, | |
711 | bind C-w to `isearch-yank-word' in `isearch-mode-map'. | |
712 | ||
713 | *** C-y in incremental search now grabs the next line if point is already | |
714 | at the end of a line. | |
715 | ||
716 | *** C-M-w deletes and C-M-y grabs a character in isearch mode. | |
717 | Another method to grab a character is to enter the minibuffer by `M-e' | |
718 | and to type `C-f' at the end of the search string in the minibuffer. | |
719 | ||
720 | *** Vertical scrolling is now possible within incremental search. | |
721 | To enable this feature, customize the new user option | |
722 | `isearch-allow-scroll'. User written commands which satisfy stringent | |
723 | constraints can be marked as "scrolling commands". See the Emacs manual | |
724 | for details. | |
725 | ||
726 | *** Isearch no longer adds `isearch-resume' commands to the command | |
727 | history by default. To enable this feature, customize the new | |
728 | user option `isearch-resume-in-command-history'. | |
729 | ||
730 | ** Replace command changes: | |
731 | ||
732 | *** When used interactively, the commands `query-replace-regexp' and | |
733 | `replace-regexp' allow \,expr to be used in a replacement string, | |
734 | where expr is an arbitrary Lisp expression evaluated at replacement | |
735 | time. `\#' in a replacement string now refers to the count of | |
736 | replacements already made by the replacement command. All regular | |
737 | expression replacement commands now allow `\?' in the replacement | |
738 | string to specify a position where the replacement string can be | |
739 | edited for each replacement. `query-replace-regexp-eval' is now | |
740 | deprecated since it offers no additional functionality. | |
741 | ||
742 | *** query-replace uses isearch lazy highlighting when the new user option | |
743 | `query-replace-lazy-highlight' is non-nil. | |
744 | ||
745 | *** The current match in query-replace is highlighted in new face | |
746 | `query-replace' which by default inherits from isearch face. | |
747 | ||
748 | *** New user option `query-replace-skip-read-only': when non-nil, | |
749 | `query-replace' and related functions simply ignore | |
750 | a match if part of it has a read-only property. | |
751 | ||
752 | ** Local variables lists: | |
753 | ||
754 | *** If the local variables list contains any variable-value pairs that | |
755 | are not known to be safe, Emacs shows a prompt asking whether to apply | |
756 | the local variables list as a whole. In earlier versions, a prompt | |
757 | was only issued for variables explicitly marked as risky (for the | |
758 | definition of risky variables, see `risky-local-variable-p'). | |
759 | ||
760 | At the prompt, you can choose to save the contents of this local | |
761 | variables list to `safe-local-variable-values'. This new customizable | |
762 | option is a list of variable-value pairs that are known to be safe. | |
763 | Variables can also be marked as safe with the existing | |
764 | `safe-local-variable' property (see `safe-local-variable-p'). | |
765 | However, risky variables will not be added to | |
766 | `safe-local-variable-values' in this way. | |
767 | ||
768 | *** The variable `enable-local-variables' controls how local variable | |
769 | lists are handled. t, the default, specifies the standard querying | |
770 | behavior. :safe means use only safe values, and ignore the rest. | |
771 | :all means set all variables, whether or not they are safe. | |
772 | nil means ignore them all. Anything else means always query. | |
773 | ||
774 | *** The variable `safe-local-eval-forms' specifies a list of forms that | |
775 | are ok to evaluate when they appear in an `eval' local variables | |
776 | specification. Normally Emacs asks for confirmation before evaluating | |
777 | such a form, but if the form appears in this list, no confirmation is | |
778 | needed. | |
779 | ||
780 | *** If a function has a non-nil `safe-local-eval-function' property, | |
781 | that means it is ok to evaluate some calls to that function when it | |
782 | appears in an `eval' local variables specification. If the property | |
783 | is t, then any form calling that function with constant arguments is | |
784 | ok. If the property is a function or list of functions, they are called | |
785 | with the form as argument, and if any returns t, the form is ok to call. | |
786 | ||
787 | If the form is not "ok to call", that means Emacs asks for | |
788 | confirmation as before. | |
789 | ||
790 | *** In processing a local variables list, Emacs strips the prefix and | |
791 | suffix from every line before processing all the lines. | |
792 | ||
793 | *** Text properties in local variables. | |
794 | ||
795 | A file local variables list cannot specify a string with text | |
796 | properties--any specified text properties are discarded. | |
797 | ||
798 | ** File operation changes: | |
799 | ||
800 | *** Unquoted `$' in file names do not signal an error any more when | |
801 | the corresponding environment variable does not exist. | |
802 | Instead, the `$ENVVAR' text is left as is, so that `$$' quoting | |
803 | is only rarely needed. | |
804 | ||
805 | *** C-x C-f RET, typing nothing in the minibuffer, is no longer a special case. | |
806 | ||
807 | Since the default input is the current directory, this has the effect | |
808 | of specifying the current directory. Normally that means to visit the | |
809 | directory with Dired. | |
810 | ||
811 | *** C-x s (save-some-buffers) now offers an option `d' to diff a buffer | |
812 | against its file, so you can see what changes you would be saving. | |
813 | ||
814 | *** Auto Compression mode is now enabled by default. | |
815 | ||
816 | *** If the user visits a file larger than `large-file-warning-threshold', | |
817 | Emacs asks for confirmation. | |
818 | ||
819 | *** The commands copy-file, rename-file, make-symbolic-link and | |
820 | add-name-to-file, when given a directory as the "new name" argument, | |
821 | convert it to a file name by merging in the within-directory part of | |
822 | the existing file's name. (This is the same convention that shell | |
823 | commands cp, mv, and ln follow.) Thus, M-x copy-file RET ~/foo RET | |
824 | /tmp RET copies ~/foo to /tmp/foo. | |
825 | ||
826 | *** require-final-newline now has two new possible values: | |
827 | ||
828 | `visit' means add a newline (as an undoable change) if it's needed | |
829 | when visiting the file. | |
830 | ||
831 | `visit-save' means add a newline (as an undoable change) if it's | |
832 | needed when visiting the file, and also add a newline if it's needed | |
833 | when saving the file. | |
834 | ||
835 | *** The new option mode-require-final-newline controls how certain | |
836 | major modes enable require-final-newline. Any major mode that's | |
837 | designed for a kind of file that should normally end in a newline | |
838 | sets require-final-newline based on mode-require-final-newline. | |
839 | So you can customize mode-require-final-newline to control what these | |
840 | modes do. | |
841 | ||
842 | *** When you are root, and you visit a file whose modes specify | |
843 | read-only, the Emacs buffer is now read-only too. Type C-x C-q if you | |
844 | want to make the buffer writable. (As root, you can in fact alter the | |
845 | file.) | |
846 | ||
847 | *** find-file-read-only visits multiple files in read-only mode, | |
848 | when the file name contains wildcard characters. | |
849 | ||
850 | *** find-alternate-file replaces the current file with multiple files, | |
851 | when the file name contains wildcard characters. It now asks if you | |
852 | wish save your changes and not just offer to kill the buffer. | |
853 | ||
854 | *** When used interactively, `format-write-file' now asks for confirmation | |
855 | before overwriting an existing file, unless a prefix argument is | |
856 | supplied. This behavior is analogous to `write-file'. | |
857 | ||
858 | *** The variable `auto-save-file-name-transforms' now has a third element that | |
859 | controls whether or not the function `make-auto-save-file-name' will | |
860 | attempt to construct a unique auto-save name (e.g. for remote files). | |
861 | ||
862 | *** The new option `write-region-inhibit-fsync' disables calls to fsync | |
863 | in `write-region'. This can be useful on laptops to avoid spinning up | |
864 | the hard drive upon each file save. Enabling this variable may result | |
865 | in data loss, use with care. | |
866 | ||
867 | ** Minibuffer changes: | |
868 | ||
869 | *** The completion commands TAB, SPC and ? in the minibuffer apply only | |
870 | to the text before point. If there is text in the buffer after point, | |
871 | it remains unchanged. | |
872 | ||
873 | *** The new file-name-shadow-mode is turned ON by default, so that when | |
874 | entering a file name, any prefix which Emacs will ignore is dimmed. | |
875 | ||
876 | *** There's a new face `minibuffer-prompt'. | |
877 | Emacs adds this face to the list of text properties stored in the | |
878 | variable `minibuffer-prompt-properties', which is used to display the | |
879 | prompt string. | |
880 | ||
881 | *** Enhanced visual feedback in `*Completions*' buffer. | |
882 | ||
883 | Completions lists use faces to highlight what all completions | |
884 | have in common and where they begin to differ. | |
885 | ||
886 | The common prefix shared by all possible completions uses the face | |
887 | `completions-common-part', while the first character that isn't the | |
888 | same uses the face `completions-first-difference'. By default, | |
889 | `completions-common-part' inherits from `default', and | |
890 | `completions-first-difference' inherits from `bold'. The idea of | |
891 | `completions-common-part' is that you can use it to make the common | |
892 | parts less visible than normal, so that the rest of the differing | |
893 | parts is, by contrast, slightly highlighted. | |
894 | ||
895 | Above fontification is always done when listing completions is | |
896 | triggered at minibuffer. If you want to fontify completions whose | |
897 | listing is triggered at the other normal buffer, you have to pass | |
898 | the common prefix of completions to `display-completion-list' as | |
899 | its second argument. | |
900 | ||
901 | *** File-name completion can now ignore specified directories. | |
902 | If an element of the list in `completion-ignored-extensions' ends in a | |
903 | slash `/', it indicates a subdirectory that should be ignored when | |
904 | completing file names. Elements of `completion-ignored-extensions' | |
905 | which do not end in a slash are never considered when a completion | |
906 | candidate is a directory. | |
907 | ||
908 | *** New user option `history-delete-duplicates'. | |
909 | If set to t when adding a new history element, all previous identical | |
910 | elements are deleted from the history list. | |
911 | ||
912 | ** Redisplay changes: | |
913 | ||
914 | *** The new face `mode-line-inactive' is used to display the mode line | |
915 | of non-selected windows. The `mode-line' face is now used to display | |
916 | the mode line of the currently selected window. | |
917 | ||
918 | The new variable `mode-line-in-non-selected-windows' controls whether | |
919 | the `mode-line-inactive' face is used. | |
920 | ||
921 | *** The mode line position information now comes before the major mode. | |
922 | When the file is maintained under version control, that information | |
923 | appears between the position information and the major mode. | |
924 | ||
925 | *** You can now customize the use of window fringes. To control this | |
926 | for all frames, use M-x fringe-mode or the Show/Hide submenu of the | |
927 | top-level Options menu, or customize the `fringe-mode' variable. To | |
928 | control this for a specific frame, use the command M-x | |
929 | set-fringe-style. | |
930 | ||
931 | *** Angle icons in the fringes can indicate the buffer boundaries. In | |
932 | addition, up and down arrow bitmaps in the fringe indicate which ways | |
933 | the window can be scrolled. | |
934 | ||
935 | This behavior is activated by setting the buffer-local variable | |
936 | `indicate-buffer-boundaries' to a non-nil value. The default value of | |
937 | this variable is found in `default-indicate-buffer-boundaries'. | |
938 | ||
939 | If value is `left' or `right', both angle and arrow bitmaps are | |
940 | displayed in the left or right fringe, resp. | |
941 | ||
942 | The value can also be an alist which specifies the presence and | |
943 | position of each bitmap individually. | |
944 | ||
945 | For example, ((top . left) (t . right)) places the top angle bitmap | |
946 | in left fringe, the bottom angle bitmap in right fringe, and both | |
947 | arrow bitmaps in right fringe. To show just the angle bitmaps in the | |
948 | left fringe, but no arrow bitmaps, use ((top . left) (bottom . left)). | |
949 | ||
950 | *** On window systems, lines which are exactly as wide as the window | |
951 | (not counting the final newline character) are no longer broken into | |
952 | two lines on the display (with just the newline on the second line). | |
953 | Instead, the newline now "overflows" into the right fringe, and the | |
954 | cursor will be displayed in the fringe when positioned on that newline. | |
955 | ||
956 | The new user option 'overflow-newline-into-fringe' can be set to nil to | |
957 | revert to the old behavior of continuing such lines. | |
958 | ||
959 | *** A window can now have individual fringe and scroll-bar settings, | |
960 | in addition to the individual display margin settings. | |
961 | ||
962 | Such individual settings are now preserved when windows are split | |
963 | horizontally or vertically, a saved window configuration is restored, | |
964 | or when the frame is resized. | |
965 | ||
966 | *** When a window has display margin areas, the fringes are now | |
967 | displayed between the margins and the buffer's text area, rather than | |
968 | outside those margins. | |
969 | ||
970 | *** New face `escape-glyph' highlights control characters and escape glyphs. | |
971 | ||
972 | *** Non-breaking space and hyphens are now displayed with a special | |
973 | face, either nobreak-space or escape-glyph. You can turn this off or | |
974 | specify a different mode by setting the variable `nobreak-char-display'. | |
975 | ||
976 | *** The parameters of automatic hscrolling can now be customized. | |
977 | The variable `hscroll-margin' determines how many columns away from | |
978 | the window edge point is allowed to get before automatic hscrolling | |
979 | will horizontally scroll the window. The default value is 5. | |
980 | ||
981 | The variable `hscroll-step' determines how many columns automatic | |
982 | hscrolling scrolls the window when point gets too close to the | |
983 | window edge. If its value is zero, the default, Emacs scrolls the | |
984 | window so as to center point. If its value is an integer, it says how | |
985 | many columns to scroll. If the value is a floating-point number, it | |
986 | gives the fraction of the window's width to scroll the window. | |
987 | ||
988 | The variable `automatic-hscrolling' was renamed to | |
989 | `auto-hscroll-mode'. The old name is still available as an alias. | |
990 | ||
991 | *** Moving or scrolling through images (and other lines) taller than | |
992 | the window now works sensibly, by automatically adjusting the window's | |
993 | vscroll property. | |
994 | ||
995 | *** Preemptive redisplay now adapts to current load and bandwidth. | |
996 | ||
997 | To avoid preempting redisplay on fast computers, networks, and displays, | |
998 | the arrival of new input is now performed at regular intervals during | |
999 | redisplay. The new variable `redisplay-preemption-period' specifies | |
1000 | the period; the default is to check for input every 0.1 seconds. | |
1001 | ||
1002 | *** The %c and %l constructs are now ignored in frame-title-format. | |
1003 | Due to technical limitations in how Emacs interacts with windowing | |
1004 | systems, these constructs often failed to render properly, and could | |
1005 | even cause Emacs to crash. | |
1006 | ||
1007 | *** If value of `auto-resize-tool-bars' is `grow-only', the tool bar | |
1008 | will expand as needed, but not contract automatically. To contract | |
1009 | the tool bar, you must type C-l. | |
1010 | ||
1011 | *** New customize option `overline-margin' controls the space between | |
1012 | overline and text. | |
1013 | ||
1014 | *** New variable `x-underline-at-descent-line' controls the relative | |
1015 | position of the underline. When set, it overrides the | |
1016 | `x-use-underline-position-properties' variables. | |
1017 | ||
1018 | ** New faces: | |
1019 | ||
1020 | *** `mode-line-highlight' is the standard face indicating mouse sensitive | |
1021 | elements on mode-line (and header-line) like `highlight' face on text | |
1022 | areas. | |
1023 | ||
1024 | *** `mode-line-buffer-id' is the standard face for buffer identification | |
1025 | parts of the mode line. | |
1026 | ||
1027 | *** `shadow' face defines the appearance of the "shadowed" text, i.e. | |
1028 | the text which should be less noticeable than the surrounding text. | |
e4769531 | 1029 | This can be achieved by using shades of gray in contrast with either |
782f8379 GM |
1030 | black or white default foreground color. This generic shadow face |
1031 | allows customization of the appearance of shadowed text in one place, | |
1032 | so package-specific faces can inherit from it. | |
1033 | ||
1034 | *** `vertical-border' face is used for the vertical divider between windows. | |
1035 | ||
1036 | ** Font-Lock (syntax highlighting) changes: | |
1037 | ||
1038 | *** All modes now support using M-x font-lock-mode to toggle | |
1039 | fontification, even those such as Occur, Info, and comint-derived | |
1040 | modes that do their own fontification in a special way. | |
1041 | ||
1042 | The variable `Info-fontify' is no longer applicable; to disable | |
1043 | fontification in Info, remove `turn-on-font-lock' from | |
1044 | `Info-mode-hook'. | |
1045 | ||
1046 | *** New standard font-lock face `font-lock-comment-delimiter-face'. | |
0343a908 GM |
1047 | This is used for the characters that indicate the start of a comment, |
1048 | e.g. `;' in Lisp mode. | |
1049 | ||
782f8379 GM |
1050 | *** New standard font-lock face `font-lock-preprocessor-face'. |
1051 | ||
1052 | *** Easy to overlook single character negation can now be font-locked. | |
1053 | You can use the new variable `font-lock-negation-char-face' and the face of | |
1054 | the same name to customize this. Currently the cc-modes, sh-script-mode, | |
1055 | cperl-mode and make-mode support this. | |
1056 | ||
1057 | *** Font-Lock mode: in major modes such as Lisp mode, where some Emacs | |
1058 | features assume that an open-paren in column 0 is always outside of | |
1059 | any string or comment, Font-Lock now highlights any such open-paren in | |
1060 | bold-red if it is inside a string or a comment, to indicate that it | |
1061 | can cause trouble. You should rewrite the string or comment so that | |
1062 | the open-paren is not in column 0. | |
1063 | ||
1064 | *** M-o now is the prefix key for setting text properties; | |
1065 | M-o M-o requests refontification. | |
1066 | ||
1067 | *** The default settings for JIT stealth lock parameters are changed. | |
1068 | The default value for the user option jit-lock-stealth-time is now nil | |
1069 | instead of 3. This setting of jit-lock-stealth-time disables stealth | |
1070 | fontification: on today's machines, it may be a bug in font lock | |
1071 | patterns if fontification otherwise noticeably degrades interactivity. | |
1072 | If you find movement in infrequently visited buffers sluggish (and the | |
1073 | major mode maintainer has no better idea), customizing | |
1074 | jit-lock-stealth-time to a non-nil value will let Emacs fontify | |
1075 | buffers in the background when it considers the system to be idle. | |
1076 | jit-lock-stealth-nice is now 0.5 instead of 0.125 which is supposed to | |
1077 | cause less load than the old defaults. | |
1078 | ||
1079 | *** jit-lock can now be delayed with `jit-lock-defer-time'. | |
1080 | ||
1081 | If this variable is non-nil, its value should be the amount of Emacs | |
1082 | idle time in seconds to wait before starting fontification. For | |
1083 | example, if you set `jit-lock-defer-time' to 0.25, fontification will | |
1084 | only happen after 0.25s of idle time. | |
1085 | ||
1086 | *** contextual refontification is now separate from stealth fontification. | |
1087 | ||
1088 | jit-lock-defer-contextually is renamed jit-lock-contextually and | |
1089 | jit-lock-context-time determines the delay after which contextual | |
1090 | refontification takes place. | |
1091 | ||
1092 | *** lazy-lock is considered obsolete. | |
1093 | ||
1094 | The `lazy-lock' package is superseded by `jit-lock' and is considered | |
1095 | obsolete. `jit-lock' is activated by default; if you wish to continue | |
1096 | using `lazy-lock', activate it in your ~/.emacs like this: | |
1097 | (setq font-lock-support-mode 'lazy-lock-mode) | |
1098 | ||
1099 | If you invoke `lazy-lock-mode' directly rather than through | |
1100 | `font-lock-support-mode', it now issues a warning: | |
1101 | "Use font-lock-support-mode rather than calling lazy-lock-mode" | |
1102 | ||
1103 | ** Menu support: | |
1104 | ||
1105 | *** A menu item "Show/Hide" was added to the top-level menu "Options". | |
1106 | This menu allows you to turn various display features on and off (such | |
1107 | as the fringes, the tool bar, the speedbar, and the menu bar itself). | |
1108 | You can also move the vertical scroll bar to either side here or turn | |
1109 | it off completely. There is also a menu-item to toggle displaying of | |
1110 | current date and time, current line and column number in the mode-line. | |
1111 | ||
1112 | *** Speedbar has moved from the "Tools" top level menu to "Show/Hide". | |
1113 | ||
1114 | *** The menu item "Open File..." has been split into two items, "New File..." | |
1115 | and "Open File...". "Open File..." now opens only existing files. This is | |
1116 | to support existing GUI file selection dialogs better. | |
1117 | ||
1118 | *** The file selection dialog for Gtk+, Mac, W32 and Motif/LessTif can be | |
1119 | disabled by customizing the variable `use-file-dialog'. | |
1120 | ||
1121 | *** The pop up menus for Lucid now stay up if you do a fast click and can | |
1122 | be navigated with the arrow keys (like Gtk+, Mac and W32). | |
1123 | ||
1124 | *** The menu bar for Motif/LessTif/Lucid/Gtk+ can be navigated with keys. | |
1125 | Pressing F10 shows the first menu in the menu bar. Navigation is done with | |
1126 | the arrow keys, select with the return key and cancel with the escape keys. | |
1127 | ||
1128 | *** The Lucid menus can display multilingual text in your locale. You have | |
1129 | to explicitly specify a fontSet resource for this to work, for example | |
1130 | `-xrm "Emacs*fontSet: -*-helvetica-medium-r-*--*-120-*-*-*-*-*-*,*"'. | |
1131 | ||
1132 | *** Dialogs for Lucid/Athena and LessTif/Motif now pop down on pressing | |
1133 | ESC, like they do for Gtk+, Mac and W32. | |
1134 | ||
1135 | *** For the Gtk+ version, you can make Emacs use the old file dialog | |
1136 | by setting the variable `x-gtk-use-old-file-dialog' to t. Default is to use | |
1137 | the new dialog. | |
1138 | ||
1139 | *** You can exit dialog windows and menus by typing C-g. | |
1140 | ||
1141 | ** Buffer Menu changes: | |
1142 | ||
1143 | *** The new options `buffers-menu-show-directories' and | |
1144 | `buffers-menu-show-status' let you control how buffers are displayed | |
1145 | in the menu dropped down when you click "Buffers" from the menu bar. | |
1146 | ||
1147 | `buffers-menu-show-directories' controls whether the menu displays | |
1148 | leading directories as part of the file name visited by the buffer. | |
1149 | If its value is `unless-uniquify', the default, directories are | |
1150 | shown unless uniquify-buffer-name-style' is non-nil. The value of nil | |
1151 | and t turn the display of directories off and on, respectively. | |
1152 | ||
1153 | `buffers-menu-show-status' controls whether the Buffers menu includes | |
1154 | the modified and read-only status of the buffers. By default it is | |
1155 | t, and the status is shown. | |
1156 | ||
1157 | Setting these variables directly does not take effect until next time | |
1158 | the Buffers menu is regenerated. | |
1159 | ||
1160 | *** New command `Buffer-menu-toggle-files-only' toggles display of file | |
1161 | buffers only in the Buffer Menu. It is bound to T in Buffer Menu | |
1162 | mode. | |
1163 | ||
1164 | *** `buffer-menu' and `list-buffers' now list buffers whose names begin | |
1165 | with a space, when those buffers are visiting files. Normally buffers | |
1166 | whose names begin with space are omitted. | |
1167 | ||
1168 | ** Mouse changes: | |
1169 | ||
1170 | *** You can now follow links by clicking Mouse-1 on the link. | |
1171 | ||
1172 | Traditionally, Emacs uses a Mouse-1 click to set point and a Mouse-2 | |
1173 | click to follow a link, whereas most other applications use a Mouse-1 | |
1174 | click for both purposes, depending on whether you click outside or | |
1175 | inside a link. Now the behavior of a Mouse-1 click has been changed | |
1176 | to match this context-sensitive dual behavior. (If you prefer the old | |
1177 | behavior, set the user option `mouse-1-click-follows-link' to nil.) | |
1178 | ||
1179 | Depending on the current mode, a Mouse-2 click in Emacs can do much | |
1180 | more than just follow a link, so the new Mouse-1 behavior is only | |
1181 | activated for modes which explicitly mark a clickable text as a "link" | |
1182 | (see the new function `mouse-on-link-p' for details). The Lisp | |
1183 | packages that are included in release 22.1 have been adapted to do | |
1184 | this, but external packages may not yet support this. However, there | |
1185 | is no risk in using such packages, as the worst thing that could | |
1186 | happen is that you get the original Mouse-1 behavior when you click | |
1187 | on a link, which typically means that you set point where you click. | |
1188 | ||
1189 | If you want to get the original Mouse-1 action also inside a link, you | |
1190 | just need to press the Mouse-1 button a little longer than a normal | |
1191 | click (i.e. press and hold the Mouse-1 button for half a second before | |
1192 | you release it). | |
1193 | ||
1194 | Dragging the Mouse-1 inside a link still performs the original | |
1195 | drag-mouse-1 action, typically copy the text. | |
1196 | ||
1197 | You can customize the new Mouse-1 behavior via the new user options | |
1198 | `mouse-1-click-follows-link' and `mouse-1-click-in-non-selected-windows'. | |
1199 | ||
1200 | *** If you set the new variable `mouse-autoselect-window' to a non-nil | |
1201 | value, windows are automatically selected as you move the mouse from | |
1202 | one Emacs window to another, even within a frame. A minibuffer window | |
1203 | can be selected only when it is active. | |
1204 | ||
1205 | *** On X, when the window manager requires that you click on a frame to | |
1206 | select it (give it focus), the selected window and cursor position | |
1207 | normally changes according to the mouse click position. If you set | |
1208 | the variable x-mouse-click-focus-ignore-position to t, the selected | |
1209 | window and cursor position do not change when you click on a frame | |
1210 | to give it focus. | |
1211 | ||
1212 | *** Emacs normally highlights mouse sensitive text whenever the mouse | |
1213 | is over the text. By setting the new variable `mouse-highlight', you | |
1214 | can optionally enable mouse highlighting only after you move the | |
1215 | mouse, so that highlighting disappears when you press a key. You can | |
1216 | also disable mouse highlighting. | |
1217 | ||
1218 | *** You can now customize if selecting a region by dragging the mouse | |
1219 | shall not copy the selected text to the kill-ring by setting the new | |
1220 | variable mouse-drag-copy-region to nil. | |
1221 | ||
1222 | *** Under X, mouse-wheel-mode is turned on by default. | |
1223 | ||
1224 | *** Emacs ignores mouse-2 clicks while the mouse wheel is being moved. | |
1225 | ||
1226 | People tend to push the mouse wheel (which counts as a mouse-2 click) | |
1227 | unintentionally while turning the wheel, so these clicks are now | |
1228 | ignored. You can customize this with the mouse-wheel-click-event and | |
1229 | mouse-wheel-inhibit-click-time variables. | |
1230 | ||
1231 | *** mouse-wheels can now scroll a specific fraction of the window | |
1232 | (rather than a fixed number of lines) and the scrolling is `progressive'. | |
1233 | ||
1234 | ** Multilingual Environment (Mule) changes: | |
1235 | ||
1236 | *** You can disable character translation for a file using the -*- | |
1237 | construct. Include `enable-character-translation: nil' inside the | |
1238 | -*-...-*- to disable any character translation that may happen by | |
1239 | various global and per-coding-system translation tables. You can also | |
1240 | specify it in a local variable list at the end of the file. For | |
1241 | shortcut, instead of using this long variable name, you can append the | |
1242 | character "!" at the end of coding-system name specified in -*- | |
1243 | construct or in a local variable list. For example, if a file has the | |
1244 | following header, it is decoded by the coding system `iso-latin-1' | |
1245 | without any character translation: | |
1246 | ;; -*- coding: iso-latin-1!; -*- | |
1247 | ||
1248 | *** Language environment and various default coding systems are setup | |
1249 | more correctly according to the current locale name. If the locale | |
1250 | name doesn't specify a charset, the default is what glibc defines. | |
1251 | This change can result in using the different coding systems as | |
1252 | default in some locale (e.g. vi_VN). | |
1253 | ||
1254 | *** The keyboard-coding-system is now automatically set based on your | |
1255 | current locale settings if you are not using a window system. This | |
1256 | can mean that the META key doesn't work but generates non-ASCII | |
1257 | characters instead, depending on how the terminal (or terminal | |
1258 | emulator) works. Use `set-keyboard-coding-system' (or customize | |
1259 | keyboard-coding-system) if you prefer META to work (the old default) | |
1260 | or if the locale doesn't describe the character set actually generated | |
1261 | by the keyboard. See Info node `Unibyte Mode'. | |
1262 | ||
1263 | *** The new command `set-file-name-coding-system' (C-x RET F) sets | |
1264 | coding system for encoding and decoding file names. A new menu item | |
1265 | (Options->Mule->Set Coding Systems->For File Name) invokes this | |
1266 | command. | |
1267 | ||
1268 | *** The new command `revert-buffer-with-coding-system' (C-x RET r) | |
1269 | revisits the current file using a coding system that you specify. | |
1270 | ||
1271 | *** New command `recode-region' decodes the region again by a specified | |
1272 | coding system. | |
1273 | ||
1274 | *** The new command `recode-file-name' changes the encoding of the name | |
1275 | of a file. | |
1276 | ||
1277 | *** New command `ucs-insert' inserts a character specified by its | |
fe7a3057 | 1278 | Unicode code point or character name. |
782f8379 GM |
1279 | |
1280 | *** New command quail-show-key shows what key (or key sequence) to type | |
1281 | in the current input method to input a character at point. | |
1282 | ||
1283 | *** Limited support for character `unification' has been added. | |
1284 | Emacs now knows how to translate between different representations of | |
1285 | the same characters in various Emacs charsets according to standard | |
1286 | Unicode mappings. This applies mainly to characters in the ISO 8859 | |
1287 | sets plus some other 8-bit sets, but can be extended. For instance, | |
1288 | translation works amongst the Emacs ...-iso8859-... charsets and the | |
1289 | mule-unicode-... ones. | |
1290 | ||
1291 | By default this translation happens automatically on encoding. | |
1292 | Self-inserting characters are translated to make the input conformant | |
1293 | with the encoding of the buffer in which it's being used, where | |
1294 | possible. | |
1295 | ||
1296 | You can force a more complete unification with the user option | |
1297 | unify-8859-on-decoding-mode. That maps all the Latin-N character sets | |
1298 | into Unicode characters (from the latin-iso8859-1 and | |
1299 | mule-unicode-0100-24ff charsets) on decoding. Note that this mode | |
1300 | will often effectively clobber data with an iso-2022 encoding. | |
1301 | ||
1302 | *** New language environments (set up automatically according to the | |
1303 | locale): Belarusian, Bulgarian, Chinese-EUC-TW, Croatian, Esperanto, | |
1304 | French, Georgian, Italian, Latin-7, Latvian, Lithuanian, Malayalam, | |
1305 | Russian, Russian, Slovenian, Swedish, Tajik, Tamil, UTF-8,Ukrainian, | |
1306 | Welsh,Latin-6, Windows-1255. | |
1307 | ||
1308 | *** New input methods: latin-alt-postfix, latin-postfix, latin-prefix, | |
1309 | belarusian, bulgarian-bds, bulgarian-phonetic, chinese-sisheng (for | |
1310 | Chinese Pinyin characters), croatian, dutch, georgian, latvian-keyboard, | |
1311 | lithuanian-numeric, lithuanian-keyboard, malayalam-inscript, rfc1345, | |
1312 | russian-computer, sgml, slovenian, tamil-inscript, ukrainian-computer, | |
1313 | ucs, vietnamese-telex, welsh. | |
1314 | ||
1315 | *** There is support for decoding Greek and Cyrillic characters into | |
1316 | either Unicode (the mule-unicode charsets) or the iso-8859 charsets, | |
1317 | when possible. The latter are more space-efficient. | |
1318 | This is controlled by user option utf-fragment-on-decoding. | |
1319 | ||
1320 | *** Improved Thai support. A new minor mode `thai-word-mode' (which is | |
1321 | automatically activated if you select Thai as a language | |
1322 | environment) changes key bindings of most word-oriented commands to | |
1323 | versions which recognize Thai words. Affected commands are | |
1324 | M-f (forward-word) | |
1325 | M-b (backward-word) | |
1326 | M-d (kill-word) | |
1327 | M-DEL (backward-kill-word) | |
1328 | M-t (transpose-words) | |
1329 | M-q (fill-paragraph) | |
1330 | ||
1331 | *** Indian support has been updated. | |
1332 | The in-is13194 coding system is now Unicode-based. CDAC fonts are | |
1333 | assumed. There is a framework for supporting various Indian scripts, | |
1334 | but currently only Devanagari, Malayalam and Tamil are supported. | |
1335 | ||
1336 | *** The utf-8/16 coding systems have been enhanced. | |
1337 | By default, untranslatable utf-8 sequences are simply composed into | |
1338 | single quasi-characters. User option `utf-translate-cjk-mode' (it is | |
1339 | turned on by default) arranges to translate many utf-8 CJK character | |
1340 | sequences into real Emacs characters in a similar way to the Mule-UCS | |
1341 | system. As this loads a fairly big data on demand, people who are not | |
1342 | interested in CJK characters may want to customize it to nil. | |
1343 | You can augment/amend the CJK translation via hash tables | |
1344 | `ucs-mule-cjk-to-unicode' and `ucs-unicode-to-mule-cjk'. The utf-8 | |
1345 | coding system now also encodes characters from most of Emacs's | |
1346 | one-dimensional internal charsets, specifically the ISO-8859 ones. | |
1347 | The utf-16 coding system is affected similarly. | |
1348 | ||
1349 | *** A UTF-7 coding system is available in the library `utf-7'. | |
1350 | ||
1351 | *** A new coding system `euc-tw' has been added for traditional Chinese | |
1352 | in CNS encoding; it accepts both Big 5 and CNS as input; on saving, | |
1353 | Big 5 is then converted to CNS. | |
1354 | ||
1355 | *** Many new coding systems are available in the `code-pages' library. | |
1356 | These include complete versions of most of those in codepage.el, based | |
1357 | on Unicode mappings. `codepage-setup' is now obsolete and is used | |
1358 | only in the MS-DOS port of Emacs. All coding systems defined in | |
1359 | `code-pages' are auto-loaded. | |
1360 | ||
1361 | *** New variable `utf-translate-cjk-unicode-range' controls which | |
1362 | Unicode characters to translate in `utf-translate-cjk-mode'. | |
1363 | ||
1364 | *** iso-10646-1 (`Unicode') fonts can be used to display any range of | |
1365 | characters encodable by the utf-8 coding system. Just specify the | |
1366 | fontset appropriately. | |
1367 | ||
1368 | ** Customize changes: | |
1369 | ||
1370 | *** Custom themes are collections of customize options. Create a | |
1371 | custom theme with M-x customize-create-theme. Use M-x load-theme to | |
1372 | load and enable a theme, and M-x disable-theme to disable it. Use M-x | |
1373 | enable-theme to enable a disabled theme. | |
1374 | ||
1375 | *** The commands M-x customize-face and M-x customize-face-other-window | |
1376 | now look at the character after point. If a face or faces are | |
1377 | specified for that character, the commands by default customize those | |
1378 | faces. | |
1379 | ||
1380 | *** The face-customization widget has been reworked to be less confusing. | |
1381 | In particular, when you enable a face attribute using the corresponding | |
1382 | check-box, there's no longer a redundant `*' option in value selection | |
1383 | for that attribute; the values you can choose are only those which make | |
1384 | sense for the attribute. When an attribute is de-selected by unchecking | |
1385 | its check-box, then the (now ignored, but still present temporarily in | |
1386 | case you re-select the attribute) value is hidden. | |
1387 | ||
1388 | *** When you set or reset a variable's value in a Customize buffer, | |
1389 | the previous value becomes the "backup value" of the variable. | |
1390 | You can go back to that backup value by selecting "Use Backup Value" | |
1391 | under the "[State]" button. | |
1392 | ||
1393 | ** Dired mode: | |
1394 | ||
1395 | *** In Dired's ! command (dired-do-shell-command), `*' and `?' now | |
1396 | control substitution of the file names only when they are surrounded | |
1397 | by whitespace. This means you can now use them as shell wildcards | |
1398 | too. If you want to use just plain `*' as a wildcard, type `*""'; the | |
1399 | double quotes make no difference in the shell, but they prevent | |
1400 | special treatment in `dired-do-shell-command'. | |
1401 | ||
1402 | *** The Dired command `dired-goto-file' is now bound to j, not M-g. | |
1403 | This is to avoid hiding the global key binding of M-g. | |
1404 | ||
1405 | *** New faces dired-header, dired-mark, dired-marked, dired-flagged, | |
1406 | dired-ignored, dired-directory, dired-symlink, dired-warning | |
1407 | introduced for Dired mode instead of font-lock faces. | |
1408 | ||
1409 | *** New Dired command `dired-compare-directories' marks files | |
1410 | with different file attributes in two dired buffers. | |
1411 | ||
1412 | *** New Dired command `dired-do-touch' (bound to T) changes timestamps | |
1413 | of marked files with the value entered in the minibuffer. | |
1414 | ||
1415 | *** In Dired, the w command now stores the current line's file name | |
1416 | into the kill ring. With a zero prefix arg, it stores the absolute file name. | |
1417 | ||
1418 | *** In Dired-x, Omitting files is now a minor mode, dired-omit-mode. | |
1419 | ||
1420 | The mode toggling command is bound to M-o. A new command | |
1421 | dired-mark-omitted, bound to * O, marks omitted files. The variable | |
1422 | dired-omit-files-p is obsoleted, use the mode toggling function | |
1423 | instead. | |
1424 | ||
1425 | *** The variables dired-free-space-program and dired-free-space-args | |
1426 | have been renamed to directory-free-space-program and | |
1427 | directory-free-space-args, and they now apply whenever Emacs puts a | |
1428 | directory listing into a buffer. | |
1429 | ||
1430 | ** Comint changes: | |
1431 | ||
1432 | *** The new INSIDE_EMACS environment variable is set to "t" in subshells | |
1433 | running inside Emacs. This supersedes the EMACS environment variable, | |
1434 | which will be removed in a future Emacs release. Programs that need | |
1435 | to know whether they are started inside Emacs should check INSIDE_EMACS | |
1436 | instead of EMACS. | |
1437 | ||
1438 | *** The comint prompt can now be made read-only, using the new user | |
1439 | option `comint-prompt-read-only'. This is not enabled by default, | |
1440 | except in IELM buffers. The read-only status of IELM prompts can be | |
1441 | controlled with the new user option `ielm-prompt-read-only', which | |
1442 | overrides `comint-prompt-read-only'. | |
1443 | ||
1444 | The new commands `comint-kill-whole-line' and `comint-kill-region' | |
1445 | support editing comint buffers with read-only prompts. | |
1446 | ||
1447 | `comint-kill-whole-line' is like `kill-whole-line', but ignores both | |
1448 | read-only and field properties. Hence, it always kill entire | |
1449 | lines, including any prompts. | |
1450 | ||
1451 | `comint-kill-region' is like `kill-region', except that it ignores | |
1452 | read-only properties, if it is safe to do so. This means that if any | |
1453 | part of a prompt is deleted, then the entire prompt must be deleted | |
1454 | and that all prompts must stay at the beginning of a line. If this is | |
1455 | not the case, then `comint-kill-region' behaves just like | |
1456 | `kill-region' if read-only properties are involved: it copies the text | |
1457 | to the kill-ring, but does not delete it. | |
1458 | ||
1459 | *** The new command `comint-insert-previous-argument' in comint-derived | |
1460 | modes (shell-mode, etc.) inserts arguments from previous command lines, | |
1461 | like bash's `ESC .' binding. It is bound by default to `C-c .', but | |
1462 | otherwise behaves quite similarly to the bash version. | |
1463 | ||
1464 | *** `comint-use-prompt-regexp-instead-of-fields' has been renamed | |
1465 | `comint-use-prompt-regexp'. The old name has been kept as an alias, | |
1466 | but declared obsolete. | |
1467 | ||
1468 | ** M-x Compile changes: | |
1469 | ||
1470 | *** M-x compile has become more robust and reliable | |
1471 | ||
1472 | Quite a few more kinds of messages are recognized. Messages that are | |
1473 | recognized as warnings or informational come in orange or green, instead of | |
1474 | red. Informational messages are by default skipped with `next-error' | |
1475 | (controlled by `compilation-skip-threshold'). | |
1476 | ||
1477 | Location data is collected on the fly as the *compilation* buffer changes. | |
1478 | This means you could modify messages to make them point to different files. | |
1479 | This also means you can not go to locations of messages you may have deleted. | |
1480 | ||
1481 | The variable `compilation-error-regexp-alist' has now become customizable. If | |
1482 | you had added your own regexps to this, you'll probably need to include a | |
1483 | leading `^', otherwise they'll match anywhere on a line. There is now also a | |
1484 | `compilation-mode-font-lock-keywords' and it nicely handles all the checks | |
1485 | that configure outputs and -o options so you see at a glance where you are. | |
1486 | ||
1487 | The new file etc/compilation.txt gives examples of each type of message. | |
1488 | ||
1489 | *** New user option `compilation-environment'. | |
1490 | This option allows you to specify environment variables for inferior | |
1491 | compilation processes without affecting the environment that all | |
1492 | subprocesses inherit. | |
1493 | ||
1494 | *** New user option `compilation-disable-input'. | |
1495 | If this is non-nil, send end-of-file as compilation process input. | |
1496 | ||
1497 | *** New options `next-error-highlight' and `next-error-highlight-no-select' | |
1498 | specify the method of highlighting of the corresponding source line | |
1499 | in new face `next-error'. | |
1500 | ||
1501 | *** A new minor mode `next-error-follow-minor-mode' can be used in | |
1502 | compilation-mode, grep-mode, occur-mode, and diff-mode (i.e. all the | |
1503 | modes that can use `next-error'). In this mode, cursor motion in the | |
1504 | buffer causes automatic display in another window of the corresponding | |
1505 | matches, compilation errors, etc. This minor mode can be toggled with | |
1506 | C-c C-f. | |
1507 | ||
1508 | *** When the left fringe is displayed, an arrow points to current message in | |
1509 | the compilation buffer. | |
1510 | ||
1511 | *** The new variable `compilation-context-lines' controls lines of leading | |
1512 | context before the current message. If nil and the left fringe is displayed, | |
1513 | it doesn't scroll the compilation output window. If there is no left fringe, | |
1514 | no arrow is displayed and a value of nil means display the message at the top | |
1515 | of the window. | |
1516 | ||
1517 | ** Occur mode changes: | |
1518 | ||
1519 | *** The new command `multi-occur' is just like `occur', except it can | |
1520 | search multiple buffers. There is also a new command | |
1521 | `multi-occur-in-matching-buffers' which allows you to specify the | |
1522 | buffers to search by their filenames or buffer names. Internally, | |
1523 | Occur mode has been rewritten, and now uses font-lock, among other | |
1524 | changes. | |
1525 | ||
1526 | *** You can now use next-error (C-x `) and previous-error to advance to | |
1527 | the next/previous matching line found by M-x occur. | |
1528 | ||
1529 | *** In the *Occur* buffer, `o' switches to it in another window, and | |
1530 | C-o displays the current line's occurrence in another window without | |
1531 | switching to it. | |
1532 | ||
1533 | ** Grep changes: | |
1534 | ||
1535 | *** Grep has been decoupled from compilation mode setup. | |
1536 | ||
1537 | There's a new separate package grep.el, with its own submenu and | |
1538 | customization group. | |
1539 | ||
1540 | *** `grep-find' is now also available under the name `find-grep' where | |
1541 | people knowing `find-grep-dired' would probably expect it. | |
1542 | ||
1543 | *** New commands `lgrep' (local grep) and `rgrep' (recursive grep) are | |
1544 | more user-friendly versions of `grep' and `grep-find', which prompt | |
1545 | separately for the regular expression to match, the files to search, | |
1546 | and the base directory for the search. Case sensitivity of the | |
1547 | search is controlled by the current value of `case-fold-search'. | |
1548 | ||
1549 | These commands build the shell commands based on the new variables | |
1550 | `grep-template' (lgrep) and `grep-find-template' (rgrep). | |
1551 | ||
1552 | The files to search can use aliases defined in `grep-files-aliases'. | |
1553 | ||
1554 | Subdirectories listed in `grep-find-ignored-directories' such as those | |
1555 | typically used by various version control systems, like CVS and arch, | |
1556 | are automatically skipped by `rgrep'. | |
1557 | ||
1558 | *** The grep commands provide highlighting support. | |
1559 | ||
1560 | Hits are fontified in green, and hits in binary files in orange. Grep buffers | |
1561 | can be saved and automatically revisited. | |
1562 | ||
1563 | *** New option `grep-highlight-matches' highlights matches in *grep* | |
1564 | buffer. It uses a special feature of some grep programs which accept | |
1565 | --color option to output markers around matches. When going to the next | |
1566 | match with `next-error' the exact match is highlighted in the source | |
1567 | buffer. Otherwise, if `grep-highlight-matches' is nil, the whole | |
1568 | source line is highlighted. | |
1569 | ||
1570 | *** New key bindings in grep output window: | |
1571 | SPC and DEL scrolls window up and down. C-n and C-p moves to next and | |
1572 | previous match in the grep window. RET jumps to the source line of | |
1573 | the current match. `n' and `p' shows next and previous match in | |
1574 | other window, but does not switch buffer. `{' and `}' jumps to the | |
1575 | previous or next file in the grep output. TAB also jumps to the next | |
1576 | file. | |
1577 | ||
1578 | *** M-x grep now tries to avoid appending `/dev/null' to the command line | |
1579 | by using GNU grep `-H' option instead. M-x grep automatically | |
1580 | detects whether this is possible or not the first time it is invoked. | |
1581 | When `-H' is used, the grep command line supplied by the user is passed | |
1582 | unchanged to the system to execute, which allows more complicated | |
1583 | command lines to be used than was possible before. | |
1584 | ||
1585 | *** The new variables `grep-window-height' and `grep-scroll-output' override | |
1586 | the corresponding compilation mode settings, for grep commands only. | |
1587 | ||
1588 | ** Cursor display changes: | |
1589 | ||
1590 | *** Emacs can produce an underscore-like (horizontal bar) cursor. | |
1591 | The underscore cursor is set by putting `(cursor-type . hbar)' in | |
1592 | default-frame-alist. It supports variable heights, like the `bar' | |
1593 | cursor does. | |
1594 | ||
1595 | *** The variable `cursor-in-non-selected-windows' can now be set to any | |
1596 | of the recognized cursor types. | |
1597 | ||
1598 | *** Display of hollow cursors now obeys the buffer-local value (if any) | |
1599 | of `cursor-in-non-selected-windows' in the buffer that the cursor | |
1600 | appears in. | |
1601 | ||
1602 | *** On text terminals, the variable `visible-cursor' controls whether Emacs | |
1603 | uses the "very visible" cursor (the default) or the normal cursor. | |
1604 | ||
1605 | *** The X resource cursorBlink can be used to turn off cursor blinking. | |
1606 | ||
1607 | *** On X, MS Windows, and Mac OS, the blinking cursor's "off" state is | |
1608 | now controlled by the variable `blink-cursor-alist'. | |
1609 | ||
1610 | ** X Windows Support: | |
1611 | ||
1612 | *** Emacs now supports drag and drop for X. Dropping a file on a window | |
1613 | opens it, dropping text inserts the text. Dropping a file on a dired | |
1614 | buffer copies or moves the file to that directory. | |
1615 | ||
1616 | *** Under X11, it is possible to swap Alt and Meta (and Super and Hyper). | |
1617 | The new variables `x-alt-keysym', `x-hyper-keysym', `x-meta-keysym', | |
1618 | and `x-super-keysym' can be used to choose which keysyms Emacs should | |
1619 | use for the modifiers. For example, the following two lines swap | |
1620 | Meta and Alt: | |
1621 | (setq x-alt-keysym 'meta) | |
1622 | (setq x-meta-keysym 'alt) | |
1623 | ||
1624 | *** The X resource useXIM can be used to turn off use of XIM, which can | |
1625 | speed up Emacs with slow networking to the X server. | |
1626 | ||
1627 | If the configure option `--without-xim' was used to turn off use of | |
1628 | XIM by default, the X resource useXIM can be used to turn it on. | |
1629 | ||
1630 | *** The new variable `x-select-request-type' controls how Emacs | |
1631 | requests X selection. The default value is nil, which means that | |
1632 | Emacs requests X selection with types COMPOUND_TEXT and UTF8_STRING, | |
1633 | and use the more appropriately result. | |
1634 | ||
1635 | *** The scrollbar under LessTif or Motif has a smoother drag-scrolling. | |
1636 | On the other hand, the size of the thumb does not represent the actual | |
1637 | amount of text shown any more (only a crude approximation of it). | |
1638 | ||
1639 | ** Xterm support: | |
1640 | ||
1641 | *** If you enable Xterm Mouse mode, Emacs will respond to mouse clicks | |
1642 | on the mode line, header line and display margin, when run in an xterm. | |
1643 | ||
1644 | *** Improved key bindings support when running in an xterm. | |
1645 | When Emacs is running in an xterm more key bindings are available. | |
1646 | The following should work: | |
1647 | {C,S,C-S,A}-{right,left,up,down,prior,next,delete,insert,F1-12}. | |
1648 | These key bindings work on xterm from X.org 6.8 (and later versions), | |
1649 | they might not work on some older versions of xterm, or on some | |
1650 | proprietary versions. | |
1651 | The various keys generated by xterm when the "modifyOtherKeys" | |
1652 | resource is set are also supported. | |
1653 | ||
1654 | ** Character terminal color support changes: | |
1655 | ||
1656 | *** The new command-line option --color=MODE lets you specify a standard | |
1657 | mode for a tty color support. It is meant to be used on character | |
1658 | terminals whose capabilities are not set correctly in the terminal | |
1659 | database, or with terminal emulators which support colors, but don't | |
1660 | set the TERM environment variable to a name of a color-capable | |
1661 | terminal. "emacs --color" uses the same color commands as GNU `ls' | |
1662 | when invoked with "ls --color", so if your terminal can support colors | |
1663 | in "ls --color", it will support "emacs --color" as well. See the | |
1664 | user manual for the possible values of the MODE parameter. | |
1665 | ||
1666 | *** Emacs now supports several character terminals which provide more | |
1667 | than 8 colors. For example, for `xterm', 16-color, 88-color, and | |
1668 | 256-color modes are supported. Emacs automatically notes at startup | |
1669 | the extended number of colors, and defines the appropriate entries for | |
1670 | all of these colors. | |
1671 | ||
1672 | *** Emacs now uses the full range of available colors for the default | |
1673 | faces when running on a color terminal, including 16-, 88-, and | |
1674 | 256-color xterms. This means that when you run "emacs -nw" on an | |
1675 | 88-color or 256-color xterm, you will see essentially the same face | |
1676 | colors as on X. | |
1677 | ||
1678 | *** There's a new support for colors on `rxvt' terminal emulator. | |
1679 | ||
1680 | ** ebnf2ps changes: | |
1681 | ||
1682 | *** New option `ebnf-arrow-extra-width' which specify extra width for arrow | |
1683 | shape drawing. | |
1684 | The extra width is used to avoid that the arrowhead and the terminal border | |
1685 | overlap. It depends on `ebnf-arrow-shape' and `ebnf-line-width'. | |
1686 | ||
1687 | *** New option `ebnf-arrow-scale' which specify the arrow scale. | |
1688 | Values lower than 1.0, shrink the arrow. | |
1689 | Values greater than 1.0, expand the arrow. | |
1690 | \f | |
1691 | * New Modes and Packages in Emacs 22.1 | |
1692 | ||
1693 | ** CUA mode is now part of the Emacs distribution. | |
1694 | ||
1695 | The new cua package provides CUA-like keybindings using C-x for | |
1696 | cut (kill), C-c for copy, C-v for paste (yank), and C-z for undo. | |
1697 | With cua, the region can be set and extended using shifted movement | |
1698 | keys (like pc-selection-mode) and typed text replaces the active | |
1699 | region (like delete-selection-mode). Do not enable these modes with | |
1700 | cua-mode. Customize the variable `cua-mode' to enable cua. | |
1701 | ||
1702 | The cua-selection-mode enables the CUA keybindings for the region but | |
1703 | does not change the bindings for C-z/C-x/C-c/C-v. It can be used as a | |
1704 | replacement for pc-selection-mode. | |
1705 | ||
1706 | In addition, cua provides unified rectangle support with visible | |
1707 | rectangle highlighting: Use C-return to start a rectangle, extend it | |
1708 | using the movement commands (or mouse-3), and cut or copy it using C-x | |
1709 | or C-c (using C-w and M-w also works). | |
1710 | ||
1711 | Use M-o and M-c to `open' or `close' the rectangle, use M-b or M-f, to | |
1712 | fill it with blanks or another character, use M-u or M-l to upcase or | |
1713 | downcase the rectangle, use M-i to increment the numbers in the | |
1714 | rectangle, use M-n to fill the rectangle with a numeric sequence (such | |
1715 | as 10 20 30...), use M-r to replace a regexp in the rectangle, and use | |
1716 | M-' or M-/ to restrict command on the rectangle to a subset of the | |
1717 | rows. See the commentary in cua-base.el for more rectangle commands. | |
1718 | ||
1719 | Cua also provides unified support for registers: Use a numeric | |
1720 | prefix argument between 0 and 9, i.e. M-0 .. M-9, for C-x, C-c, and | |
1721 | C-v to cut or copy into register 0-9, or paste from register 0-9. | |
1722 | ||
1723 | The last text deleted (not killed) is automatically stored in | |
1724 | register 0. This includes text deleted by typing text. | |
1725 | ||
1726 | Finally, cua provides a global mark which is set using S-C-space. | |
1727 | When the global mark is active, any text which is cut or copied is | |
1728 | automatically inserted at the global mark position. See the | |
1729 | commentary in cua-base.el for more global mark related commands. | |
1730 | ||
1731 | The features of cua also works with the standard Emacs bindings for | |
1732 | kill, copy, yank, and undo. If you want to use cua mode, but don't | |
1733 | want the C-x, C-c, C-v, and C-z bindings, you can customize the | |
1734 | `cua-enable-cua-keys' variable. | |
1735 | ||
1736 | Note: This version of cua mode is not backwards compatible with older | |
1737 | versions of cua.el and cua-mode.el. To ensure proper operation, you | |
1738 | must remove older versions of cua.el or cua-mode.el as well as the | |
1739 | loading and customization of those packages from the .emacs file. | |
1740 | ||
1741 | ** Tramp is now part of the distribution. | |
1742 | ||
1743 | This package is similar to Ange-FTP: it allows you to edit remote | |
1744 | files. But whereas Ange-FTP uses FTP to access the remote host, | |
1745 | Tramp uses a shell connection. The shell connection is always used | |
1746 | for filename completion and directory listings and suchlike, but for | |
1747 | the actual file transfer, you can choose between the so-called | |
1748 | `inline' methods (which transfer the files through the shell | |
1749 | connection using base64 or uu encoding) and the `out-of-band' methods | |
1750 | (which invoke an external copying program such as `rcp' or `scp' or | |
1751 | `rsync' to do the copying). | |
1752 | ||
1753 | Shell connections can be acquired via `rsh', `ssh', `telnet' and also | |
1754 | `su' and `sudo'. Ange-FTP is still supported via the `ftp' method. | |
1755 | ||
1756 | If you want to disable Tramp you should set | |
1757 | ||
1758 | (setq tramp-default-method "ftp") | |
1759 | ||
1760 | Removing Tramp, and re-enabling Ange-FTP, can be achieved by M-x | |
1761 | tramp-unload-tramp. | |
1762 | ||
1763 | ** The image-dired.el package allows you to easily view, tag and in | |
1764 | other ways manipulate image files and their thumbnails, using dired as | |
1765 | the main interface. Image-Dired provides functionality to generate | |
1766 | simple image galleries. | |
1767 | ||
1768 | ** Image files are normally visited in Image mode, which lets you toggle | |
1769 | between viewing the image and viewing the text using C-c C-c. | |
1770 | ||
1771 | ** The new python.el package is used to edit Python and Jython programs. | |
1772 | ||
1773 | ** The URL package (which had been part of W3) is now part of Emacs. | |
1774 | ||
1775 | ** Calc is now part of the Emacs distribution. | |
1776 | ||
1777 | Calc is an advanced desk calculator and mathematical tool written in | |
1778 | Emacs Lisp. The prefix for Calc has been changed to `C-x *' and Calc | |
1779 | can be started with `C-x * *'. The Calc manual is separate from the | |
1780 | Emacs manual; within Emacs, type "C-h i m calc RET" to read the | |
1781 | manual. A reference card is available in `etc/calccard.tex' and | |
1782 | `etc/calccard.ps'. | |
1783 | ||
1784 | ** Org mode is now part of the Emacs distribution | |
1785 | ||
1786 | Org mode is a mode for keeping notes, maintaining ToDo lists, and | |
1787 | doing project planning with a fast and effective plain-text system. | |
1788 | It also contains a plain-text table editor with spreadsheet-like | |
1789 | capabilities. | |
1790 | ||
1791 | The Org mode table editor can be integrated into any major mode by | |
1af74d06 | 1792 | activating the minor mode, Orgtbl mode. |
782f8379 GM |
1793 | |
1794 | The documentation for org-mode is in a separate manual; within Emacs, | |
1795 | type "C-h i m org RET" to read that manual. A reference card is | |
1796 | available in `etc/orgcard.tex' and `etc/orgcard.ps'. | |
1797 | ||
1798 | ** ERC is now part of the Emacs distribution. | |
1799 | ||
1800 | ERC is a powerful, modular, and extensible IRC client for Emacs. | |
1801 | ||
1802 | To see what modules are available, type | |
1803 | M-x customize-option erc-modules RET. | |
1804 | ||
1805 | To start an IRC session with ERC, type M-x erc, and follow the prompts | |
1806 | for server, port, and nick. | |
1807 | ||
1808 | ** Rcirc is now part of the Emacs distribution. | |
1809 | ||
1810 | Rcirc is an Internet relay chat (IRC) client. It supports | |
1811 | simultaneous connections to multiple IRC servers. Each discussion | |
1812 | takes place in its own buffer. For each connection you can join | |
1813 | several channels (many-to-many) and participate in private | |
1814 | (one-to-one) chats. Both channel and private chats are contained in | |
1815 | separate buffers. | |
1816 | ||
1817 | To start an IRC session using the default parameters, type M-x irc. | |
1818 | If you type C-u M-x irc, it prompts you for the server, nick, port and | |
1819 | startup channel parameters before connecting. | |
1820 | ||
1821 | ** The new package ibuffer provides a powerful, completely | |
1822 | customizable replacement for buff-menu.el. | |
1823 | ||
1824 | ** Newsticker is now part of the Emacs distribution. | |
1825 | ||
1826 | Newsticker asynchronously retrieves headlines (RSS) from a list of news | |
1827 | sites, prepares these headlines for reading, and allows for loading the | |
1828 | corresponding articles in a web browser. Its documentation is in a | |
1829 | separate manual. | |
1830 | ||
1831 | ** The wdired.el package allows you to use normal editing commands on Dired | |
1832 | buffers to change filenames, permissions, etc... | |
1833 | ||
1834 | ** Ido mode is now part of the Emacs distribution. | |
1835 | ||
1836 | The ido (interactively do) package is an extension of the iswitchb | |
1837 | package to do interactive opening of files and directories in addition | |
1838 | to interactive buffer switching. Ido is a superset of iswitchb (with | |
1839 | a few exceptions), so don't enable both packages. | |
1840 | ||
1841 | ** The new global minor mode `file-name-shadow-mode' modifies the way | |
1842 | filenames being entered by the user in the minibuffer are displayed, so | |
1843 | that it's clear when part of the entered filename will be ignored due to | |
1844 | Emacs' filename parsing rules. The ignored portion can be made dim, | |
1845 | invisible, or otherwise less visually noticeable. The display method can | |
1846 | be displayed by customizing the variable `file-name-shadow-properties'. | |
1847 | ||
1848 | ** Emacs' keyboard macro facilities have been enhanced by the new | |
1849 | kmacro package. | |
1850 | ||
1851 | Keyboard macros are now defined and executed via the F3 and F4 keys: | |
1852 | F3 starts a macro, F4 ends the macro, and pressing F4 again executes | |
1853 | the last macro. While defining the macro, F3 inserts a counter value | |
1854 | which automatically increments every time the macro is executed. | |
1855 | ||
1856 | There is now a keyboard macro ring which stores the most recently | |
1857 | defined macros. | |
1858 | ||
1859 | The C-x C-k sequence is now a prefix for the kmacro keymap which | |
1860 | defines bindings for moving through the keyboard macro ring, | |
1861 | C-x C-k C-p and C-x C-k C-n, editing the last macro C-x C-k C-e, | |
1862 | manipulating the macro counter and format via C-x C-k C-c, | |
1863 | C-x C-k C-a, and C-x C-k C-f. See the commentary in kmacro.el | |
1864 | for more commands. | |
1865 | ||
1866 | The original macro bindings C-x (, C-x ), and C-x e are still | |
1867 | available, but they now interface to the keyboard macro ring too. | |
1868 | ||
1869 | The C-x e command now automatically terminates the current macro | |
1870 | before calling it, if used while defining a macro. | |
1871 | ||
1872 | In addition, when ending or calling a macro with C-x e, the macro can | |
1873 | be repeated immediately by typing just the `e'. You can customize | |
1874 | this behavior via the variables kmacro-call-repeat-key and | |
1875 | kmacro-call-repeat-with-arg. | |
1876 | ||
1877 | Keyboard macros can now be debugged and edited interactively. | |
1878 | C-x C-k SPC steps through the last keyboard macro one key sequence | |
1879 | at a time, prompting for the actions to take. | |
1880 | ||
1881 | ** The new keypad setup package provides several common bindings for | |
1882 | the numeric keypad which is available on most keyboards. The numeric | |
1883 | keypad typically has the digits 0 to 9, a decimal point, keys marked | |
1884 | +, -, /, and *, an Enter key, and a NumLock toggle key. The keypad | |
1885 | package only controls the use of the digit and decimal keys. | |
1886 | ||
1887 | By customizing the variables `keypad-setup', `keypad-shifted-setup', | |
1888 | `keypad-numlock-setup', and `keypad-numlock-shifted-setup', or by | |
1889 | using the function `keypad-setup', you can rebind all digit keys and | |
1890 | the decimal key of the keypad in one step for each of the four | |
1891 | possible combinations of the Shift key state (not pressed/pressed) and | |
1892 | the NumLock toggle state (off/on). | |
1893 | ||
1894 | The choices for the keypad keys in each of the above states are: | |
1895 | `Plain numeric keypad' where the keys generates plain digits, | |
1896 | `Numeric keypad with decimal key' where the character produced by the | |
1897 | decimal key can be customized individually (for internationalization), | |
1898 | `Numeric Prefix Arg' where the keypad keys produce numeric prefix args | |
1899 | for Emacs editing commands, `Cursor keys' and `Shifted Cursor keys' | |
1900 | where the keys work like (shifted) arrow keys, home/end, etc., and | |
1901 | `Unspecified/User-defined' where the keypad keys (kp-0, kp-1, etc.) | |
1902 | are left unspecified and can be bound individually through the global | |
1903 | or local keymaps. | |
1904 | ||
1905 | ** The printing package is now part of the Emacs distribution. | |
1906 | ||
1907 | If you enable the printing package by including (require 'printing) in | |
1908 | the .emacs file, the normal Print item on the File menu is replaced | |
1909 | with a Print sub-menu which allows you to preview output through | |
1910 | ghostview, use ghostscript to print (if you don't have a PostScript | |
1911 | printer) or send directly to printer a PostScript code generated by | |
1912 | `ps-print' package. Use M-x pr-help for more information. | |
1913 | ||
1914 | ** The new package longlines.el provides a minor mode for editing text | |
1915 | files composed of long lines, based on the `use-hard-newlines' | |
1916 | mechanism. The long lines are broken up by inserting soft newlines, | |
1917 | which are automatically removed when saving the file to disk or | |
1918 | copying into the kill ring, clipboard, etc. By default, Longlines | |
1919 | mode inserts soft newlines automatically during editing, a behavior | |
1920 | referred to as "soft word wrap" in other text editors. This is | |
1921 | similar to Refill mode, but more reliable. To turn the word wrap | |
1922 | feature off, set `longlines-auto-wrap' to nil. | |
1923 | ||
1924 | ** SES mode (ses-mode) is a new major mode for creating and editing | |
1925 | spreadsheet files. Besides the usual Emacs features (intuitive command | |
1926 | letters, undo, cell formulas in Lisp, plaintext files, etc.) it also offers | |
1927 | viral immunity and import/export of tab-separated values. | |
1928 | ||
1929 | ** The new package table.el implements editable, WYSIWYG, embedded | |
1930 | `text tables' in Emacs buffers. It simulates the effect of putting | |
1931 | these tables in a special major mode. The package emulates WYSIWYG | |
1932 | table editing available in modern word processors. The package also | |
1933 | can generate a table source in typesetting and markup languages such | |
1934 | as latex and html from the visually laid out text table. | |
1935 | ||
1936 | ** Filesets are collections of files. You can define a fileset in | |
1937 | various ways, such as based on a directory tree or based on | |
1938 | program files that include other program files. | |
1939 | ||
1940 | Once you have defined a fileset, you can perform various operations on | |
1941 | all the files in it, such as visiting them or searching and replacing | |
1942 | in them. | |
1943 | ||
1944 | ** The minor mode Reveal mode makes text visible on the fly as you | |
1945 | move your cursor into hidden regions of the buffer. | |
1946 | It should work with any package that uses overlays to hide parts | |
1947 | of a buffer, such as outline-minor-mode, hs-minor-mode, hide-ifdef-mode, ... | |
1948 | ||
1949 | There is also Global Reveal mode which affects all buffers. | |
1950 | ||
1951 | ** New minor mode, Visible mode, toggles invisibility in the current buffer. | |
1952 | When enabled, it makes all invisible text visible. When disabled, it | |
1953 | restores the previous value of `buffer-invisibility-spec'. | |
1954 | ||
1955 | ** The new package flymake.el does on-the-fly syntax checking of program | |
1956 | source files. See the Flymake's Info manual for more details. | |
1957 | ||
1958 | ** savehist saves minibuffer histories between sessions. | |
1959 | To use this feature, turn on savehist-mode in your `.emacs' file. | |
1960 | ||
1961 | ** The ruler-mode.el library provides a minor mode for displaying an | |
1962 | "active" ruler in the header line. You can use the mouse to visually | |
1963 | change the `fill-column', `window-margins' and `tab-stop-list' | |
1964 | settings. | |
1965 | ||
1966 | ** The file t-mouse.el is now part of Emacs and provides access to mouse | |
1967 | events from the console. It still requires gpm to work but has been updated | |
1968 | for Emacs 22. In particular, the mode-line is now position sensitive. | |
1969 | ||
1970 | ** The new package scroll-lock.el provides the Scroll Lock minor mode | |
1971 | for pager-like scrolling. Keys which normally move point by line or | |
1972 | paragraph will scroll the buffer by the respective amount of lines | |
1973 | instead and point will be kept vertically fixed relative to window | |
1974 | boundaries during scrolling. | |
1975 | ||
1976 | ** The new global minor mode `size-indication-mode' (off by default) | |
1977 | shows the size of accessible part of the buffer on the mode line. | |
1978 | ||
1979 | ** The new package conf-mode.el handles thousands of configuration files, with | |
1980 | varying syntaxes for comments (;, #, //, /* */ or !), assignment (var = value, | |
1981 | var : value, var value or keyword var value) and sections ([section] or | |
1982 | section { }). Many files under /etc/, or with suffixes like .cf through | |
1983 | .config, .properties (Java), .desktop (KDE/Gnome), .ini and many others are | |
1984 | recognized. | |
1985 | ||
1986 | ** GDB-Script-mode is used for files like .gdbinit. | |
1987 | ||
1988 | ** The new package dns-mode.el adds syntax highlighting of DNS master files. | |
1989 | It is a modern replacement for zone-mode.el, which is now obsolete. | |
1990 | ||
1991 | ** `cfengine-mode' is a major mode for editing GNU Cfengine | |
1992 | configuration files. | |
1993 | ||
1994 | ** The TCL package tcl-mode.el was replaced by tcl.el. | |
1995 | This was actually done in Emacs-21.1, and was not documented. | |
1996 | \f | |
1997 | * Changes in Specialized Modes and Packages in Emacs 22.1: | |
1998 | ||
1999 | ** Changes in Dired | |
2000 | ||
2001 | *** Bindings for Image-Dired added. | |
2002 | Several new keybindings, all starting with the C-t prefix, have been | |
2003 | added to Dired. They are all bound to commands in Image-Dired. As a | |
2004 | starting point, mark some image files in a dired buffer and do C-t d | |
2005 | to display thumbnails of them in a separate buffer. | |
2006 | ||
2007 | ** Info mode changes | |
2008 | ||
2009 | *** Images in Info pages are supported. | |
2010 | ||
2011 | Info pages show embedded images, in Emacs frames with image support. | |
2012 | Info documentation that includes images, processed with makeinfo | |
2013 | version 4.7 or newer, compiles to Info pages with embedded images. | |
2014 | ||
2015 | *** `Info-index' offers completion. | |
2016 | ||
2017 | *** http and ftp links in Info are now operational: they look like cross | |
2018 | references and following them calls `browse-url'. | |
2019 | ||
2020 | *** isearch in Info uses Info-search and searches through multiple nodes. | |
2021 | ||
2022 | Before leaving the initial Info node isearch fails once with the error | |
2023 | message [initial node], and with subsequent C-s/C-r continues through | |
2024 | other nodes. When isearch fails for the rest of the manual, it wraps | |
2025 | around the whole manual to the top/final node. The user option | |
2026 | `Info-isearch-search' controls whether to use Info-search for isearch, | |
2027 | or the default isearch search function that wraps around the current | |
2028 | Info node. | |
2029 | ||
2030 | *** New search commands: `Info-search-case-sensitively' (bound to S), | |
2031 | `Info-search-backward', and `Info-search-next' which repeats the last | |
2032 | search without prompting for a new search string. | |
2033 | ||
2034 | *** New command `info-apropos' searches the indices of the known | |
2035 | Info files on your system for a string, and builds a menu of the | |
2036 | possible matches. | |
2037 | ||
2038 | *** New command `Info-history-forward' (bound to r and new toolbar icon) | |
2039 | moves forward in history to the node you returned from after using | |
2040 | `Info-history-back' (renamed from `Info-last'). | |
2041 | ||
2042 | *** New command `Info-history' (bound to L) displays a menu of visited nodes. | |
2043 | ||
2044 | *** New command `Info-toc' (bound to T) creates a node with table of contents | |
2045 | from the tree structure of menus of the current Info file. | |
2046 | ||
2047 | *** New command `Info-copy-current-node-name' (bound to w) copies | |
2048 | the current Info node name into the kill ring. With a zero prefix | |
2049 | arg, puts the node name inside the `info' function call. | |
2050 | ||
2051 | *** New face `info-xref-visited' distinguishes visited nodes from unvisited | |
2052 | and a new option `Info-fontify-visited-nodes' to control this. | |
2053 | ||
2054 | *** A numeric prefix argument of `info' selects an Info buffer | |
2055 | with the number appended to the `*info*' buffer name (e.g. "*info*<2>"). | |
2056 | ||
2057 | *** Info now hides node names in menus and cross references by default. | |
2058 | ||
2059 | If you prefer the old behavior, you can set the new user option | |
2060 | `Info-hide-note-references' to nil. | |
2061 | ||
2062 | *** The default value for `Info-scroll-prefer-subnodes' is now nil. | |
2063 | ||
2064 | ** Emacs server changes | |
2065 | ||
2066 | *** You can have several Emacs servers on the same machine. | |
2067 | ||
2068 | % emacs --eval '(setq server-name "foo")' -f server-start & | |
2069 | % emacs --eval '(setq server-name "bar")' -f server-start & | |
2070 | % emacsclient -s foo file1 | |
2071 | % emacsclient -s bar file2 | |
2072 | ||
2073 | *** The `emacsclient' command understands the options `--eval' and | |
2074 | `--display' which tell Emacs respectively to evaluate the given Lisp | |
2075 | expression and to use the given display when visiting files. | |
2076 | ||
2077 | *** User option `server-mode' can be used to start a server process. | |
2078 | ||
2079 | ** Locate changes | |
2080 | ||
2081 | *** By default, reverting the *Locate* buffer now just runs the last | |
2082 | `locate' command back over again without offering to update the locate | |
2083 | database (which normally only works if you have root privileges). If | |
2084 | you prefer the old behavior, set the new customizable option | |
2085 | `locate-update-when-revert' to t. | |
2086 | ||
2087 | ** Desktop package | |
2088 | ||
2089 | *** Desktop saving is now a minor mode, `desktop-save-mode'. | |
2090 | ||
2091 | *** The variable `desktop-enable' is obsolete. | |
2092 | ||
2093 | Customize `desktop-save-mode' to enable desktop saving. | |
2094 | ||
2095 | *** Buffers are saved in the desktop file in the same order as that in the | |
2096 | buffer list. | |
2097 | ||
2098 | *** The desktop package can be customized to restore only some buffers | |
2099 | immediately, remaining buffers are restored lazily (when Emacs is | |
2100 | idle). | |
2101 | ||
2102 | *** New command line option --no-desktop | |
2103 | ||
2104 | *** New commands: | |
2105 | - desktop-revert reverts to the last loaded desktop. | |
2106 | - desktop-change-dir kills current desktop and loads a new. | |
2107 | - desktop-save-in-desktop-dir saves desktop in the directory from which | |
2108 | it was loaded. | |
2109 | - desktop-lazy-complete runs the desktop load to completion. | |
2110 | - desktop-lazy-abort aborts lazy loading of the desktop. | |
2111 | ||
2112 | *** New customizable variables: | |
2113 | - desktop-save. Determines whether the desktop should be saved when it is | |
2114 | killed. | |
2115 | - desktop-file-name-format. Format in which desktop file names should be saved. | |
2116 | - desktop-path. List of directories in which to lookup the desktop file. | |
2117 | - desktop-locals-to-save. List of local variables to save. | |
2118 | - desktop-globals-to-clear. List of global variables that `desktop-clear' will clear. | |
2119 | - desktop-clear-preserve-buffers-regexp. Regexp identifying buffers that `desktop-clear' | |
2120 | should not delete. | |
2121 | - desktop-restore-eager. Number of buffers to restore immediately. Remaining buffers are | |
2122 | restored lazily (when Emacs is idle). | |
2123 | - desktop-lazy-verbose. Verbose reporting of lazily created buffers. | |
2124 | - desktop-lazy-idle-delay. Idle delay before starting to create buffers. | |
2125 | ||
2126 | *** New hooks: | |
2127 | - desktop-after-read-hook run after a desktop is loaded. | |
2128 | - desktop-no-desktop-file-hook run when no desktop file is found. | |
2129 | ||
2130 | ** Recentf changes | |
2131 | ||
2132 | The recent file list is now automatically cleaned up when recentf mode is | |
2133 | enabled. The new option `recentf-auto-cleanup' controls when to do | |
2134 | automatic cleanup. | |
2135 | ||
2136 | The ten most recent files can be quickly opened by using the shortcut | |
2137 | keys 1 to 9, and 0, when the recent list is displayed in a buffer via | |
2138 | the `recentf-open-files', or `recentf-open-more-files' commands. | |
2139 | ||
2140 | The `recentf-keep' option replaces `recentf-keep-non-readable-files-p' | |
2141 | and provides a more general mechanism to customize which file names to | |
2142 | keep in the recent list. | |
2143 | ||
2144 | With the more advanced option `recentf-filename-handlers', you can | |
2145 | specify functions that successively transform recent file names. For | |
2146 | example, if set to `file-truename' plus `abbreviate-file-name', the | |
2147 | same file will not be in the recent list with different symbolic | |
2148 | links, and the file name will be abbreviated. | |
2149 | ||
2150 | To follow naming convention, `recentf-menu-append-commands-flag' | |
2151 | replaces the misnamed option `recentf-menu-append-commands-p'. The | |
2152 | old name remains available as alias, but has been marked obsolete. | |
2153 | ||
2154 | ** Auto-Revert changes | |
2155 | ||
2156 | *** You can now use Auto Revert mode to `tail' a file. | |
2157 | ||
2158 | If point is at the end of a file buffer before reverting, Auto Revert | |
2159 | mode keeps it at the end after reverting. Similarly if point is | |
c07318f4 MB |
2160 | displayed at the end of a file buffer in any window, it stays at the end |
2161 | of the buffer in that window. This allows you to "tail" a file: just | |
2162 | put point at the end of the buffer and it stays there. This rule | |
2163 | applies to file buffers. For non-file buffers, the behavior can be mode | |
2164 | dependent. | |
782f8379 GM |
2165 | |
2166 | If you are sure that the file will only change by growing at the end, | |
2167 | then you can tail the file more efficiently by using the new minor | |
2168 | mode Auto Revert Tail mode. The function `auto-revert-tail-mode' | |
2169 | toggles this mode. | |
2170 | ||
2171 | *** Auto Revert mode is now more careful to avoid excessive reverts and | |
2172 | other potential problems when deciding which non-file buffers to | |
2173 | revert. This matters especially if Global Auto Revert mode is enabled | |
2174 | and `global-auto-revert-non-file-buffers' is non-nil. Auto Revert | |
2175 | mode only reverts a non-file buffer if the buffer has a non-nil | |
2176 | `revert-buffer-function' and a non-nil `buffer-stale-function', which | |
2177 | decides whether the buffer should be reverted. Currently, this means | |
2178 | that auto reverting works for Dired buffers (although this may not | |
2179 | work properly on all operating systems) and for the Buffer Menu. | |
2180 | ||
2181 | *** If the new user option `auto-revert-check-vc-info' is non-nil, Auto | |
2182 | Revert mode reliably updates version control info (such as the version | |
2183 | control number in the mode line), in all version controlled buffers in | |
2184 | which it is active. If the option is nil, the default, then this info | |
2185 | only gets updated whenever the buffer gets reverted. | |
2186 | ||
2187 | ** Changes in Shell Mode | |
2188 | ||
2189 | *** Shell output normally scrolls so that the input line is at the | |
2190 | bottom of the window -- thus showing the maximum possible text. (This | |
2191 | is similar to the way sequential output to a terminal works.) | |
2192 | ||
2193 | ** Changes in Hi Lock | |
2194 | ||
2195 | *** hi-lock-mode now only affects a single buffer, and a new function | |
2196 | `global-hi-lock-mode' enables Hi Lock in all buffers. By default, if | |
2197 | hi-lock-mode is used in what appears to be the initialization file, a | |
2198 | warning message suggests to use global-hi-lock-mode instead. However, | |
2199 | if the new variable `hi-lock-archaic-interface-deduce' is non-nil, | |
2200 | using hi-lock-mode in an initialization file will turn on Hi Lock in all | |
2201 | buffers and no warning will be issued (for compatibility with the | |
2202 | behavior in older versions of Emacs). | |
2203 | ||
2204 | ** Changes in Allout | |
2205 | ||
2206 | *** Topic cryptography added, enabling easy gpg topic encryption and | |
2207 | decryption. Per-topic basis enables interspersing encrypted-text and | |
2208 | clear-text within a single file to your heart's content, using symmetric | |
2209 | and/or public key modes. Time-limited key caching, user-provided | |
2210 | symmetric key hinting and consistency verification, auto-encryption of | |
2211 | pending topics on save, and more, make it easy to use encryption in | |
2212 | powerful ways. Encryption behavior customization is collected in the | |
2213 | allout-encryption customization group. | |
2214 | ||
2215 | *** Default command prefix was changed to "\C-c " (control-c space), to | |
2216 | avoid intruding on user's keybinding space. Customize the | |
2217 | `allout-command-prefix' variable to your preference. | |
2218 | ||
2219 | *** Some previously rough topic-header format edge cases are reconciled. | |
2220 | Level 1 topics use the mode's comment format, and lines starting with the | |
2221 | asterisk - for instance, the comment close of some languages (eg, c's "*/" | |
2222 | or mathematica's "*)") - at the beginning of line are no longer are | |
2223 | interpreted as level 1 topics in those modes. | |
2224 | ||
2225 | *** Many or most commonly occurring "accidental" topics are disqualified. | |
2226 | Text in item bodies that looks like a low-depth topic is no longer mistaken | |
2227 | for one unless its first offspring (or that of its next sibling with | |
2228 | offspring) is only one level deeper. | |
2229 | ||
2230 | For example, pasting some text with a bunch of leading asterisks into a | |
2231 | topic that's followed by a level 3 or deeper topic will not cause the | |
2232 | pasted text to be mistaken for outline structure. | |
2233 | ||
2234 | The same constraint is applied to any level 2 or 3 topics. | |
2235 | ||
2236 | This settles an old issue where typed or pasted text needed to be carefully | |
2237 | reviewed, and sometimes doctored, to avoid accidentally disrupting the | |
2238 | outline structure. Now that should be generally unnecessary, as the most | |
2239 | prone-to-occur accidents are disqualified. | |
2240 | ||
2241 | *** Allout now refuses to create "containment discontinuities", where a | |
2242 | topic is shifted deeper than the offspring-depth of its container. On the | |
2243 | other hand, allout now operates gracefully with existing containment | |
2244 | discontinuities, revealing excessively contained topics rather than either | |
2245 | leaving them hidden or raising an error. | |
2246 | ||
2247 | *** Navigation within an item is easier. Repeated beginning-of-line and | |
2248 | end-of-line key commands (usually, ^A and ^E) cycle through the | |
2249 | beginning/end-of-line and then beginning/end of topic, etc. See new | |
2250 | customization vars `allout-beginning-of-line-cycles' and | |
2251 | `allout-end-of-line-cycles'. | |
2252 | ||
2253 | *** New or revised allout-mode activity hooks enable creation of | |
2254 | cooperative enhancements to allout mode without changes to the mode, | |
2255 | itself. | |
2256 | ||
2257 | See `allout-exposure-change-hook', `allout-structure-added-hook', | |
2258 | `allout-structure-deleted-hook', and `allout-structure-shifted-hook'. | |
2259 | ||
2260 | `allout-exposure-change-hook' replaces the existing | |
2261 | `allout-view-change-hook', which is being deprecated. Both are still | |
2262 | invoked, but `allout-view-change-hook' will eventually be ignored. | |
2263 | `allout-exposure-change-hook' is called with explicit arguments detailing | |
2264 | the specifics of each change (as are the other new hooks), making it easier | |
2265 | to use than the old version. | |
2266 | ||
2267 | There is a new mode deactivation hook, `allout-mode-deactivate-hook', for | |
2268 | coordinating with deactivation of allout-mode. Both that and the mode | |
2269 | activation hook, `allout-mode-hook' are now run after the `allout-mode' | |
2270 | variable is changed, rather than before. | |
2271 | ||
2272 | *** Allout now uses text overlay's `invisible' property for concealed text, | |
2273 | instead of selective-display. This simplifies the code, in particular | |
2274 | avoiding the need for kludges for isearch dynamic-display, discretionary | |
2275 | handling of edits of concealed text, undo concerns, etc. | |
2276 | ||
2277 | *** There are many other fixes and refinements, including: | |
2278 | ||
2279 | - repaired inhibition of inadvertent edits to concealed text, without | |
2280 | inhibiting undo; we now reveal undo changes within concealed text. | |
2281 | - auto-fill-mode is now left inactive when allout-mode starts, if it | |
2282 | already was inactive. also, `allout-inhibit-auto-fill' custom | |
2283 | configuration variable makes it easy to disable auto fill in allout | |
2284 | outlines in general or on a per-buffer basis. | |
2285 | - allout now tolerates fielded text in outlines without disruption. | |
2286 | - hot-spot navigation now is modularized with a new function, | |
2287 | `allout-hotspot-key-handler', enabling easier use and enhancement of | |
2288 | the functionality in allout addons. | |
2289 | - repaired retention of topic body hanging indent upon topic depth shifts | |
2290 | - bulleting variation is simpler and more accommodating, both in the | |
2291 | default behavior and in ability to vary when creating new topics | |
2292 | - mode deactivation now does cleans up effectively, more properly | |
2293 | restoring affected variables and hooks to former state, removing | |
2294 | overlays, etc. see `allout-add-resumptions' and | |
2295 | `allout-do-resumptions', which replace the old `allout-resumptions'. | |
2296 | - included a few unit-tests for interior functionality. developers can | |
2297 | have them automatically run at the end of module load by customizing | |
2298 | the option `allout-run-unit-tests-on-load'. | |
2299 | - many, many other, more minor tweaks, fixes, and refinements. | |
2300 | - version number incremented to 2.2 | |
2301 | ||
2302 | ** Hideshow mode changes | |
2303 | ||
2304 | *** New variable `hs-set-up-overlay' allows customization of the overlay | |
2305 | used to effect hiding for hideshow minor mode. Integration with isearch | |
2306 | handles the overlay property `display' specially, preserving it during | |
2307 | temporary overlay showing in the course of an isearch operation. | |
2308 | ||
2309 | *** New variable `hs-allow-nesting' non-nil means that hiding a block does | |
2310 | not discard the hidden state of any "internal" blocks; when the parent | |
2311 | block is later shown, the internal blocks remain hidden. Default is nil. | |
2312 | ||
2313 | ** FFAP changes | |
2314 | ||
2315 | *** New ffap commands and keybindings: | |
2316 | ||
2317 | C-x C-r (`ffap-read-only'), | |
2318 | C-x C-v (`ffap-alternate-file'), C-x C-d (`ffap-list-directory'), | |
2319 | C-x 4 r (`ffap-read-only-other-window'), C-x 4 d (`ffap-dired-other-window'), | |
2320 | C-x 5 r (`ffap-read-only-other-frame'), C-x 5 d (`ffap-dired-other-frame'). | |
2321 | ||
2322 | *** FFAP accepts wildcards in a file name by default. | |
2323 | ||
2324 | C-x C-f passes the file name to `find-file' with non-nil WILDCARDS | |
2325 | argument, which visits multiple files, and C-x d passes it to `dired'. | |
2326 | ||
2327 | ** Changes in Skeleton | |
2328 | ||
2329 | *** In skeleton.el, `-' marks the `skeleton-point' without interregion interaction. | |
2330 | ||
2331 | `@' has reverted to only setting `skeleton-positions' and no longer | |
2332 | sets `skeleton-point'. Skeletons which used @ to mark | |
2333 | `skeleton-point' independent of `_' should now use `-' instead. The | |
2334 | updated `skeleton-insert' docstring explains these new features along | |
2335 | with other details of skeleton construction. | |
2336 | ||
2337 | *** The variables `skeleton-transformation', `skeleton-filter', and | |
2338 | `skeleton-pair-filter' have been renamed to | |
2339 | `skeleton-transformation-function', `skeleton-filter-function', and | |
2340 | `skeleton-pair-filter-function'. The old names are still available | |
2341 | as aliases. | |
2342 | ||
2343 | ** HTML/SGML changes | |
2344 | ||
2345 | *** Emacs now tries to set up buffer coding systems for HTML/XML files | |
2346 | automatically. | |
2347 | ||
2348 | *** SGML mode has indentation and supports XML syntax. | |
2349 | The new variable `sgml-xml-mode' tells SGML mode to use XML syntax. | |
2350 | When this option is enabled, SGML tags are inserted in XML style, | |
2351 | i.e., there is always a closing tag. | |
2352 | By default, its setting is inferred on a buffer-by-buffer basis | |
2353 | from the file name or buffer contents. | |
2354 | ||
2355 | *** The variable `sgml-transformation' has been renamed to | |
2356 | `sgml-transformation-function'. The old name is still available as | |
2357 | alias. | |
2358 | ||
2359 | *** `xml-mode' is now an alias for `sgml-mode', which has XML support. | |
2360 | ||
2361 | ** TeX modes | |
2362 | ||
2363 | *** New major mode Doctex mode, for *.dtx files. | |
2364 | ||
2365 | *** C-c C-c prompts for a command to run, and tries to offer a good default. | |
2366 | ||
2367 | *** The user option `tex-start-options-string' has been replaced | |
2368 | by two new user options: `tex-start-options', which should hold | |
2369 | command-line options to feed to TeX, and `tex-start-commands' which should hold | |
2370 | TeX commands to use at startup. | |
2371 | ||
2372 | *** verbatim environments are now highlighted in courier by font-lock | |
2373 | and super/sub-scripts are made into super/sub-scripts. | |
2374 | ||
2375 | ** RefTeX mode changes | |
2376 | ||
2377 | *** Changes to RefTeX's table of contents | |
2378 | ||
2379 | The new command keys "<" and ">" in the TOC buffer promote/demote the | |
2380 | section at point or all sections in the current region, with full | |
2381 | support for multifile documents. | |
2382 | ||
2383 | The new command `reftex-toc-recenter' (`C-c -') shows the current | |
2384 | section in the TOC buffer without selecting the TOC window. | |
2385 | Recentering can happen automatically in idle time when the option | |
2386 | `reftex-auto-recenter-toc' is turned on. The highlight in the TOC | |
2387 | buffer stays when the focus moves to a different window. A dedicated | |
2388 | frame can show the TOC with the current section always automatically | |
2389 | highlighted. The frame is created and deleted from the toc buffer | |
2390 | with the `d' key. | |
2391 | ||
2392 | The toc window can be split off horizontally instead of vertically. | |
2393 | See new option `reftex-toc-split-windows-horizontally'. | |
2394 | ||
2395 | Labels can be renamed globally from the table of contents using the | |
2396 | key `M-%'. | |
2397 | ||
2398 | The new command `reftex-goto-label' jumps directly to a label | |
2399 | location. | |
2400 | ||
2401 | *** Changes related to citations and BibTeX database files | |
2402 | ||
2403 | Commands that insert a citation now prompt for optional arguments when | |
2404 | called with a prefix argument. Related new options are | |
2405 | `reftex-cite-prompt-optional-args' and `reftex-cite-cleanup-optional-args'. | |
2406 | ||
2407 | The new command `reftex-create-bibtex-file' creates a BibTeX database | |
2408 | with all entries referenced in the current document. The keys "e" and | |
2409 | "E" allow to produce a BibTeX database file from entries marked in a | |
2410 | citation selection buffer. | |
2411 | ||
2412 | The command `reftex-citation' uses the word in the buffer before the | |
2413 | cursor as a default search string. | |
2414 | ||
2415 | The support for chapterbib has been improved. Different chapters can | |
2416 | now use BibTeX or an explicit `thebibliography' environment. | |
2417 | ||
2418 | The macros which specify the bibliography file (like \bibliography) | |
2419 | can be configured with the new option `reftex-bibliography-commands'. | |
2420 | ||
2421 | Support for jurabib has been added. | |
2422 | ||
2423 | *** Global index matched may be verified with a user function. | |
2424 | ||
2425 | During global indexing, a user function can verify an index match. | |
2426 | See new option `reftex-index-verify-function'. | |
2427 | ||
2428 | *** Parsing documents with many labels can be sped up. | |
2429 | ||
2430 | Operating in a document with thousands of labels can be sped up | |
2431 | considerably by allowing RefTeX to derive the type of a label directly | |
2432 | from the label prefix like `eq:' or `fig:'. The option | |
2433 | `reftex-trust-label-prefix' needs to be configured in order to enable | |
2434 | this feature. While the speed-up is significant, this may reduce the | |
2435 | quality of the context offered by RefTeX to describe a label. | |
2436 | ||
2437 | *** Miscellaneous changes | |
2438 | ||
2439 | The macros which input a file in LaTeX (like \input, \include) can be | |
2440 | configured in the new option `reftex-include-file-commands'. | |
2441 | ||
2442 | RefTeX supports global incremental search. | |
2443 | ||
2444 | ** BibTeX mode | |
2445 | ||
2446 | *** The new command `bibtex-url' browses a URL for the BibTeX entry at | |
2447 | point (bound to C-c C-l and mouse-2, RET on clickable fields). | |
2448 | ||
2449 | *** The new command `bibtex-entry-update' (bound to C-c C-u) updates | |
2450 | an existing BibTeX entry by inserting fields that may occur but are not | |
2451 | present. | |
2452 | ||
2453 | *** New `bibtex-entry-format' option `required-fields', enabled by default. | |
2454 | ||
2455 | *** `bibtex-maintain-sorted-entries' can take values `plain', | |
2456 | `crossref', and `entry-class' which control the sorting scheme used | |
2457 | for BibTeX entries. `bibtex-sort-entry-class' controls the sorting | |
2458 | scheme `entry-class'. TAB completion for reference keys and | |
2459 | automatic detection of duplicates does not require anymore that | |
2460 | `bibtex-maintain-sorted-entries' is non-nil. | |
2461 | ||
2462 | *** The new command `bibtex-complete' completes word fragment before | |
2463 | point according to context (bound to M-tab). | |
2464 | ||
2465 | *** In BibTeX mode the command `fill-paragraph' (M-q) fills | |
2466 | individual fields of a BibTeX entry. | |
2467 | ||
2468 | *** The new variable `bibtex-autofill-types' contains a list of entry | |
2469 | types for which fields are filled automatically (if possible). | |
2470 | ||
2471 | *** The new commands `bibtex-find-entry' and `bibtex-find-crossref' | |
2472 | locate entries and crossref'd entries (bound to C-c C-s and C-c C-x). | |
2473 | Crossref fields are clickable (bound to mouse-2, RET). | |
2474 | ||
2475 | *** The new variables `bibtex-files' and `bibtex-file-path' define a set | |
2476 | of BibTeX files that are searched for entry keys. | |
2477 | ||
2478 | *** The new command `bibtex-validate-globally' checks for duplicate keys | |
2479 | in multiple BibTeX files. | |
2480 | ||
2481 | *** If the new variable `bibtex-autoadd-commas' is non-nil, | |
2482 | automatically add missing commas at end of BibTeX fields. | |
2483 | ||
2484 | *** The new command `bibtex-copy-summary-as-kill' pushes summary | |
2485 | of BibTeX entry to kill ring (bound to C-c C-t). | |
2486 | ||
2487 | *** If the new variable `bibtex-parse-keys-fast' is non-nil, | |
2488 | use fast but simplified algorithm for parsing BibTeX keys. | |
2489 | ||
2490 | *** The new variables bibtex-expand-strings and | |
2491 | bibtex-autokey-expand-strings control the expansion of strings when | |
2492 | extracting the content of a BibTeX field. | |
2493 | ||
2494 | *** The variables `bibtex-autokey-name-case-convert' and | |
2495 | `bibtex-autokey-titleword-case-convert' have been renamed to | |
2496 | `bibtex-autokey-name-case-convert-function' and | |
2497 | `bibtex-autokey-titleword-case-convert-function'. The old names are | |
2498 | still available as aliases. | |
2499 | ||
2500 | ** GUD changes | |
2501 | ||
2502 | *** The new package gdb-ui.el provides an enhanced graphical interface to | |
2503 | GDB. You can interact with GDB through the GUD buffer in the usual way, but | |
2504 | there are also further buffers which control the execution and describe the | |
2505 | state of your program. It can separate the input/output of your program from | |
2506 | that of GDB and watches expressions in the speedbar. It also uses features of | |
2507 | Emacs 21/22 such as the toolbar, and bitmaps in the fringe to indicate | |
2508 | breakpoints. | |
2509 | ||
2510 | To use this package just type M-x gdb. See the Emacs manual if you want the | |
fffa137c | 2511 | old behavior. |
782f8379 GM |
2512 | |
2513 | *** GUD mode has its own tool bar for controlling execution of the inferior | |
2514 | and other common debugger commands. | |
2515 | ||
2516 | *** In GUD mode, when talking to GDB, C-x C-a C-j "jumps" the program | |
2517 | counter to the specified source line (the one where point is). | |
2518 | ||
2519 | *** The variable tooltip-gud-tips-p has been removed. GUD tooltips can now be | |
2520 | toggled independently of normal tooltips with the minor mode | |
2521 | `gud-tooltip-mode'. | |
2522 | ||
2523 | *** In graphical mode, with a C program, GUD Tooltips have been extended to | |
2524 | display the #define directive associated with an identifier when program is | |
2525 | not executing. | |
2526 | ||
2527 | *** GUD mode improvements for jdb: | |
2528 | ||
2529 | **** Search for source files using jdb classpath and class information. | |
2530 | Fast startup since there is no need to scan all source files up front. | |
2531 | There is also no need to create and maintain lists of source | |
2532 | directories to scan. Look at `gud-jdb-use-classpath' and | |
2533 | `gud-jdb-classpath' customization variables documentation. | |
2534 | ||
2535 | **** The previous method of searching for source files has been | |
2536 | preserved in case someone still wants/needs to use it. | |
2537 | Set `gud-jdb-use-classpath' to nil. | |
2538 | ||
2539 | **** Supports the standard breakpoint (gud-break, gud-clear) | |
2540 | set/clear operations from Java source files under the classpath, stack | |
2541 | traversal (gud-up, gud-down), and run until current stack finish | |
2542 | (gud-finish). | |
2543 | ||
2544 | **** Supports new jdb (Java 1.2 and later) in addition to oldjdb | |
2545 | (Java 1.1 jdb). | |
2546 | ||
2547 | *** Added jdb Customization Variables | |
2548 | ||
2549 | **** `gud-jdb-command-name'. What command line to use to invoke jdb. | |
2550 | ||
2551 | **** `gud-jdb-use-classpath'. Allows selection of java source file searching | |
2552 | method: set to t for new method, nil to scan `gud-jdb-directories' for | |
2553 | java sources (previous method). | |
2554 | ||
2555 | **** `gud-jdb-directories'. List of directories to scan and search for Java | |
2556 | classes using the original gud-jdb method (if `gud-jdb-use-classpath' | |
2557 | is nil). | |
2558 | ||
2559 | *** Minor Improvements | |
2560 | ||
321decc8 | 2561 | **** The STARTTLS wrapper (starttls.el) can now use GnuTLS |
782f8379 GM |
2562 | instead of the OpenSSL based `starttls' tool. For backwards |
2563 | compatibility, it prefers `starttls', but you can toggle | |
321decc8 | 2564 | `starttls-use-gnutls' to switch to GnuTLS (or simply remove the |
782f8379 GM |
2565 | `starttls' tool). |
2566 | ||
2567 | **** Do not allow debugger output history variable to grow without bounds. | |
2568 | ||
2569 | ** Lisp mode changes | |
2570 | ||
2571 | *** Lisp mode now uses `font-lock-doc-face' for doc strings. | |
2572 | ||
2573 | *** C-u C-M-q in Emacs Lisp mode pretty-prints the list after point. | |
2574 | ||
2575 | *** New features in evaluation commands | |
2576 | ||
2577 | **** The function `eval-defun' (C-M-x) called on defface reinitializes | |
2578 | the face to the value specified in the defface expression. | |
2579 | ||
2580 | **** Typing C-x C-e twice prints the value of the integer result | |
2581 | in additional formats (octal, hexadecimal, character) specified | |
2582 | by the new function `eval-expression-print-format'. The same | |
2583 | function also defines the result format for `eval-expression' (M-:), | |
2584 | `eval-print-last-sexp' (C-j) and some edebug evaluation functions. | |
2585 | ||
2586 | ** Changes to cmuscheme | |
2587 | ||
2588 | *** Emacs now offers to start Scheme if the user tries to | |
2589 | evaluate a Scheme expression but no Scheme subprocess is running. | |
2590 | ||
2591 | *** If the file ~/.emacs_NAME or ~/.emacs.d/init_NAME.scm (where NAME | |
2592 | is the name of the Scheme interpreter) exists, its contents are sent | |
2593 | to the Scheme subprocess upon startup. | |
2594 | ||
2595 | *** There are new commands to instruct the Scheme interpreter to trace | |
2596 | procedure calls (`scheme-trace-procedure') and to expand syntactic forms | |
2597 | (`scheme-expand-current-form'). The commands actually sent to the Scheme | |
2598 | subprocess are controlled by the user options `scheme-trace-command', | |
2599 | `scheme-untrace-command' and `scheme-expand-current-form'. | |
2600 | ||
2601 | ** Ewoc changes | |
2602 | ||
2603 | *** The new function `ewoc-delete' deletes specified nodes. | |
2604 | ||
2605 | *** `ewoc-create' now takes optional arg NOSEP, which inhibits insertion of | |
2606 | a newline after each pretty-printed entry and after the header and footer. | |
2607 | This allows you to create multiple-entry ewocs on a single line and to | |
2608 | effect "invisible" nodes by arranging for the pretty-printer to not print | |
2609 | anything for those nodes. | |
2610 | ||
2611 | For example, these two sequences of expressions behave identically: | |
2612 | ||
2613 | ;; NOSEP nil | |
2614 | (defun PP (data) (insert (format "%S" data))) | |
2615 | (ewoc-create 'PP "start\n") | |
2616 | ||
2617 | ;; NOSEP t | |
2618 | (defun PP (data) (insert (format "%S\n" data))) | |
2619 | (ewoc-create 'PP "start\n\n" "\n" t) | |
2620 | ||
2621 | ** CC mode changes | |
2622 | ||
2623 | *** The CC Mode manual has been extensively revised. | |
2624 | The information about using CC Mode has been separated from the larger | |
2625 | and more difficult chapters about configuration. | |
2626 | ||
2627 | *** New Minor Modes | |
2628 | **** Electric Minor Mode toggles the electric action of non-alphabetic keys. | |
2629 | The new command c-toggle-electric-mode is bound to C-c C-l. Turning the | |
2630 | mode off can be helpful for editing chaotically indented code and for | |
2631 | users new to CC Mode, who sometimes find electric indentation | |
2632 | disconcerting. Its current state is displayed in the mode line with an | |
2633 | 'l', e.g. "C/al". | |
2634 | ||
2635 | **** Subword Minor Mode makes Emacs recognize word boundaries at upper case | |
2636 | letters in StudlyCapsIdentifiers. You enable this feature by C-c C-w. It can | |
2637 | also be used in non-CC Mode buffers. :-) Contributed by Masatake YAMATO. | |
2638 | ||
2639 | *** Support for the AWK language. | |
2640 | Support for the AWK language has been introduced. The implementation is | |
2641 | based around GNU AWK version 3.1, but it should work pretty well with | |
2642 | any AWK. As yet, not all features of CC Mode have been adapted for AWK. | |
2643 | Here is a summary: | |
2644 | ||
2645 | **** Indentation Engine | |
2646 | The CC Mode indentation engine fully supports AWK mode. | |
2647 | ||
2648 | AWK mode handles code formatted in the conventional AWK fashion: `{'s | |
2649 | which start actions, user-defined functions, or compound statements are | |
2650 | placed on the same line as the associated construct; the matching `}'s | |
2651 | are normally placed under the start of the respective pattern, function | |
2652 | definition, or structured statement. | |
2653 | ||
2654 | The predefined line-up functions haven't yet been adapted for AWK | |
2655 | mode, though some of them may work serendipitously. There shouldn't | |
2656 | be any problems writing custom indentation functions for AWK mode. | |
2657 | ||
2658 | **** Font Locking | |
2659 | There is a single level of font locking in AWK mode, rather than the | |
2660 | three distinct levels the other modes have. There are several | |
2661 | idiosyncrasies in AWK mode's font-locking due to the peculiarities of | |
2662 | the AWK language itself. | |
2663 | ||
2664 | **** Comment and Movement Commands | |
2665 | These commands all work for AWK buffers. The notion of "defun" has | |
2666 | been augmented to include AWK pattern-action pairs - the standard | |
2667 | "defun" commands on key sequences C-M-a, C-M-e, and C-M-h use this | |
2668 | extended definition. | |
2669 | ||
2670 | **** "awk" style, Auto-newline Insertion and Clean-ups | |
2671 | A new style, "awk" has been introduced, and this is now the default | |
2672 | style for AWK code. With auto-newline enabled, the clean-up | |
2673 | c-one-liner-defun (see above) is useful. | |
2674 | ||
2675 | *** Font lock support. | |
2676 | CC Mode now provides font lock support for all its languages. This | |
2677 | supersedes the font lock patterns that have been in the core font lock | |
2678 | package for C, C++, Java and Objective-C. Like indentation, font | |
2679 | locking is done in a uniform way across all languages (except the new | |
2680 | AWK mode - see below). That means that the new font locking will be | |
2681 | different from the old patterns in various details for most languages. | |
2682 | ||
2683 | The main goal of the font locking in CC Mode is accuracy, to provide a | |
2684 | dependable aid in recognizing the various constructs. Some, like | |
2685 | strings and comments, are easy to recognize while others like | |
2686 | declarations and types can be very tricky. CC Mode can go to great | |
2687 | lengths to recognize declarations and casts correctly, especially when | |
2688 | the types aren't recognized by standard patterns. This is a fairly | |
2689 | demanding analysis which can be slow on older hardware, and it can | |
2690 | therefore be disabled by choosing a lower decoration level with the | |
2691 | variable font-lock-maximum-decoration. | |
2692 | ||
2693 | Note that the most demanding font lock level has been tuned with lazy | |
2694 | fontification in mind; Just-In-Time-Lock mode should be enabled for | |
2695 | the highest font lock level (by default, it is). Fontifying a file | |
2696 | with several thousand lines in one go can take the better part of a | |
2697 | minute. | |
2698 | ||
2699 | **** The (c|c++|objc|java|idl|pike)-font-lock-extra-types variables | |
2700 | are now used by CC Mode to recognize identifiers that are certain to | |
2701 | be types. (They are also used in cases that aren't related to font | |
2702 | locking.) At the maximum decoration level, types are often recognized | |
2703 | properly anyway, so these variables should be fairly restrictive and | |
2704 | not contain patterns for uncertain types. | |
2705 | ||
2706 | **** Support for documentation comments. | |
2707 | There is a "plugin" system to fontify documentation comments like | |
2708 | Javadoc and the markup within them. It's independent of the host | |
2709 | language, so it's possible to e.g. turn on Javadoc font locking in C | |
2710 | buffers. See the variable c-doc-comment-style for details. | |
2711 | ||
2712 | Currently three kinds of doc comment styles are recognized: Sun's | |
2713 | Javadoc, Autodoc (which is used in Pike) and GtkDoc (used in C). (The | |
2714 | last was contributed by Masatake YAMATO). This is by no means a | |
2715 | complete list of the most common tools; if your doc comment extractor | |
2716 | of choice is missing then please drop a note to bug-cc-mode@gnu.org. | |
2717 | ||
2718 | **** Better handling of C++ templates. | |
2719 | As a side effect of the more accurate font locking, C++ templates are | |
2720 | now handled much better. The angle brackets that delimit them are | |
2721 | given parenthesis syntax so that they can be navigated like other | |
2722 | parens. | |
2723 | ||
2724 | This also improves indentation of templates, although there still is | |
2725 | work to be done in that area. E.g. it's required that multiline | |
2726 | template clauses are written in full and then refontified to be | |
2727 | recognized, and the indentation of nested templates is a bit odd and | |
2728 | not as configurable as it ought to be. | |
2729 | ||
2730 | **** Improved handling of Objective-C and CORBA IDL. | |
2731 | Especially the support for Objective-C and IDL has gotten an overhaul. | |
2732 | The special "@" declarations in Objective-C are handled correctly. | |
2733 | All the keywords used in CORBA IDL, PSDL, and CIDL are recognized and | |
2734 | handled correctly, also wrt indentation. | |
2735 | ||
2736 | *** Changes in Key Sequences | |
2737 | **** c-toggle-auto-hungry-state is no longer bound to C-c C-t. | |
2738 | ||
2739 | **** c-toggle-hungry-state is no longer bound to C-c C-d. | |
2740 | This binding has been taken over by c-hungry-delete-forwards. | |
2741 | ||
2742 | **** c-toggle-auto-state (C-c C-t) has been renamed to c-toggle-auto-newline. | |
2743 | c-toggle-auto-state remains as an alias. | |
2744 | ||
2745 | **** The new commands c-hungry-backspace and c-hungry-delete-forwards | |
2746 | have key bindings C-c C-DEL (or C-c DEL, for the benefit of TTYs) and | |
2747 | C-c C-d (or C-c C-<delete> or C-c <delete>) respectively. These | |
2748 | commands delete entire blocks of whitespace with a single | |
2749 | key-sequence. [N.B. "DEL" is the <backspace> key.] | |
2750 | ||
2751 | **** The new command c-toggle-electric-mode is bound to C-c C-l. | |
2752 | ||
2753 | **** The new command c-subword-mode is bound to C-c C-w. | |
2754 | ||
2755 | *** C-c C-s (`c-show-syntactic-information') now highlights the anchor | |
2756 | position(s). | |
2757 | ||
2758 | *** New syntactic symbols in IDL mode. | |
2759 | The top level constructs "module" and "composition" (from CIDL) are | |
2760 | now handled like "namespace" in C++: They are given syntactic symbols | |
2761 | module-open, module-close, inmodule, composition-open, | |
2762 | composition-close, and incomposition. | |
2763 | ||
2764 | *** New functions to do hungry delete without enabling hungry delete mode. | |
2765 | The new functions `c-hungry-backspace' and `c-hungry-delete-forward' | |
2766 | provide hungry deletion without having to toggle a mode. They are | |
2767 | bound to C-c C-DEL and C-c C-d (and several variants, for the benefit | |
2768 | of different keyboard setups. See "Changes in key sequences" above). | |
2769 | ||
2770 | *** Better control over `require-final-newline'. | |
2771 | ||
2772 | The variable `c-require-final-newline' specifies which of the modes | |
2773 | implemented by CC mode should insert final newlines. Its value is a | |
2774 | list of modes, and only those modes should do it. By default the list | |
2775 | includes C, C++ and Objective-C modes. | |
2776 | ||
2777 | Whichever modes are in this list will set `require-final-newline' | |
2778 | based on `mode-require-final-newline'. | |
2779 | ||
2780 | *** Format change for syntactic context elements. | |
2781 | ||
2782 | The elements in the syntactic context returned by `c-guess-basic-syntax' | |
2783 | and stored in `c-syntactic-context' has been changed somewhat to allow | |
2784 | attaching more information. They are now lists instead of single cons | |
2785 | cells. E.g. a line that previously had the syntactic analysis | |
2786 | ||
2787 | ((inclass . 11) (topmost-intro . 13)) | |
2788 | ||
2789 | is now analyzed as | |
2790 | ||
2791 | ((inclass 11) (topmost-intro 13)) | |
2792 | ||
2793 | In some cases there are more than one position given for a syntactic | |
2794 | symbol. | |
2795 | ||
2796 | This change might affect code that calls `c-guess-basic-syntax' | |
2797 | directly, and custom lineup functions if they use | |
2798 | `c-syntactic-context'. However, the argument given to lineup | |
2799 | functions is still a single cons cell with nil or an integer in the | |
2800 | cdr. | |
2801 | ||
2802 | *** API changes for derived modes. | |
2803 | ||
2804 | There have been extensive changes "under the hood" which can affect | |
2805 | derived mode writers. Some of these changes are likely to cause | |
2806 | incompatibilities with existing derived modes, but on the other hand | |
2807 | care has now been taken to make it possible to extend and modify CC | |
2808 | Mode with less risk of such problems in the future. | |
2809 | ||
2810 | **** New language variable system. | |
2811 | These are variables whose values vary between CC Mode's different | |
2812 | languages. See the comment blurb near the top of cc-langs.el. | |
2813 | ||
2814 | **** New initialization functions. | |
2815 | The initialization procedure has been split up into more functions to | |
2816 | give better control: `c-basic-common-init', `c-font-lock-init', and | |
2817 | `c-init-language-vars'. | |
2818 | ||
2819 | *** Changes in analysis of nested syntactic constructs. | |
2820 | The syntactic analysis engine has better handling of cases where | |
2821 | several syntactic constructs appear nested on the same line. They are | |
2822 | now handled as if each construct started on a line of its own. | |
2823 | ||
2824 | This means that CC Mode now indents some cases differently, and | |
2825 | although it's more consistent there might be cases where the old way | |
2826 | gave results that's more to one's liking. So if you find a situation | |
2827 | where you think that the indentation has become worse, please report | |
2828 | it to bug-cc-mode@gnu.org. | |
2829 | ||
2830 | **** New syntactic symbol substatement-label. | |
2831 | This symbol is used when a label is inserted between a statement and | |
2832 | its substatement. E.g: | |
2833 | ||
2834 | if (x) | |
2835 | x_is_true: | |
2836 | do_stuff(); | |
2837 | ||
2838 | *** Better handling of multiline macros. | |
2839 | ||
2840 | **** Syntactic indentation inside macros. | |
2841 | The contents of multiline #define's are now analyzed and indented | |
2842 | syntactically just like other code. This can be disabled by the new | |
2843 | variable `c-syntactic-indentation-in-macros'. A new syntactic symbol | |
2844 | `cpp-define-intro' has been added to control the initial indentation | |
2845 | inside `#define's. | |
2846 | ||
2847 | **** New lineup function `c-lineup-cpp-define'. | |
2848 | ||
2849 | Now used by default to line up macro continuation lines. The behavior | |
2850 | of this function closely mimics the indentation one gets if the macro | |
2851 | is indented while the line continuation backslashes are temporarily | |
2852 | removed. If syntactic indentation in macros is turned off, it works | |
2853 | much line `c-lineup-dont-change', which was used earlier, but handles | |
2854 | empty lines within the macro better. | |
2855 | ||
2856 | **** Automatically inserted newlines continues the macro if used within one. | |
2857 | This applies to the newlines inserted by the auto-newline mode, and to | |
2858 | `c-context-line-break' and `c-context-open-line'. | |
2859 | ||
2860 | **** Better alignment of line continuation backslashes. | |
2861 | `c-backslash-region' tries to adapt to surrounding backslashes. New | |
2862 | variable `c-backslash-max-column' puts a limit on how far out | |
2863 | backslashes can be moved. | |
2864 | ||
2865 | **** Automatic alignment of line continuation backslashes. | |
2866 | This is controlled by the new variable `c-auto-align-backslashes'. It | |
2867 | affects `c-context-line-break', `c-context-open-line' and newlines | |
2868 | inserted in Auto-Newline mode. | |
2869 | ||
2870 | **** Line indentation works better inside macros. | |
2871 | Regardless whether syntactic indentation and syntactic indentation | |
2872 | inside macros are enabled or not, line indentation now ignores the | |
2873 | line continuation backslashes. This is most noticeable when syntactic | |
2874 | indentation is turned off and there are empty lines (save for the | |
2875 | backslash) in the macro. | |
2876 | ||
2877 | *** indent-for-comment is more customizable. | |
2878 | The behavior of M-; (indent-for-comment) is now configurable through | |
2879 | the variable `c-indent-comment-alist'. The indentation behavior is | |
2880 | based on the preceding code on the line, e.g. to get two spaces after | |
2881 | #else and #endif but indentation to `comment-column' in most other | |
2882 | cases (something which was hardcoded earlier). | |
2883 | ||
2884 | *** New function `c-context-open-line'. | |
2885 | It's the open-line equivalent of `c-context-line-break'. | |
2886 | ||
2887 | *** New clean-ups | |
2888 | ||
2889 | **** `comment-close-slash'. | |
2890 | With this clean-up, a block (i.e. c-style) comment can be terminated by | |
2891 | typing a slash at the start of a line. | |
2892 | ||
2893 | **** `c-one-liner-defun' | |
2894 | This clean-up compresses a short enough defun (for example, an AWK | |
2895 | pattern/action pair) onto a single line. "Short enough" is configurable. | |
2896 | ||
2897 | *** New lineup functions | |
2898 | ||
2899 | **** `c-lineup-string-cont' | |
2900 | This lineup function lines up a continued string under the one it | |
2901 | continues. E.g: | |
2902 | ||
2903 | result = prefix + "A message " | |
2904 | "string."; <- c-lineup-string-cont | |
2905 | ||
2906 | **** `c-lineup-cascaded-calls' | |
2907 | Lines up series of calls separated by "->" or ".". | |
2908 | ||
2909 | **** `c-lineup-knr-region-comment' | |
2910 | Gives (what most people think is) better indentation of comments in | |
2911 | the "K&R region" between the function header and its body. | |
2912 | ||
2913 | **** `c-lineup-gcc-asm-reg' | |
2914 | Provides better indentation inside asm blocks. | |
2915 | ||
2916 | **** `c-lineup-argcont' | |
2917 | Lines up continued function arguments after the preceding comma. | |
2918 | ||
2919 | *** Added toggle for syntactic indentation. | |
2920 | The function `c-toggle-syntactic-indentation' can be used to toggle | |
2921 | syntactic indentation. | |
2922 | ||
2923 | *** Better caching of the syntactic context. | |
2924 | CC Mode caches the positions of the opening parentheses (of any kind) | |
2925 | of the lists surrounding the point. Those positions are used in many | |
2926 | places as anchor points for various searches. The cache is now | |
2927 | improved so that it can be reused to a large extent when the point is | |
2928 | moved. The less it moves, the less needs to be recalculated. | |
2929 | ||
2930 | The effect is that CC Mode should be fast most of the time even when | |
2931 | opening parens are hung (i.e. aren't in column zero). It's typically | |
2932 | only the first time after the point is moved far down in a complex | |
2933 | file that it'll take noticeable time to find out the syntactic | |
2934 | context. | |
2935 | ||
2936 | *** Statements are recognized in a more robust way. | |
2937 | Statements are recognized most of the time even when they occur in an | |
2938 | "invalid" context, e.g. in a function argument. In practice that can | |
2939 | happen when macros are involved. | |
2940 | ||
2941 | *** Improved the way `c-indent-exp' chooses the block to indent. | |
2942 | It now indents the block for the closest sexp following the point | |
2943 | whose closing paren ends on a different line. This means that the | |
2944 | point doesn't have to be immediately before the block to indent. | |
2945 | Also, only the block and the closing line is indented; the current | |
2946 | line is left untouched. | |
2947 | ||
2948 | ** Changes in Makefile mode | |
2949 | ||
2950 | *** Makefile mode has submodes for automake, gmake, makepp, BSD make and imake. | |
2951 | ||
2952 | The former two couldn't be differentiated before, and the latter three | |
2953 | are new. Font-locking is robust now and offers new customizable | |
2954 | faces. | |
2955 | ||
2956 | *** The variable `makefile-query-one-target-method' has been renamed | |
2957 | to `makefile-query-one-target-method-function'. The old name is still | |
2958 | available as alias. | |
2959 | ||
2960 | ** Sql changes | |
2961 | ||
2962 | *** The variable `sql-product' controls the highlighting of different | |
2963 | SQL dialects. This variable can be set globally via Customize, on a | |
2964 | buffer-specific basis via local variable settings, or for the current | |
2965 | session using the new SQL->Product submenu. (This menu replaces the | |
2966 | SQL->Highlighting submenu.) | |
2967 | ||
2968 | The following values are supported: | |
2969 | ||
2970 | ansi ANSI Standard (default) | |
2971 | db2 DB2 | |
2972 | informix Informix | |
2973 | ingres Ingres | |
2974 | interbase Interbase | |
2975 | linter Linter | |
2976 | ms Microsoft | |
2977 | mysql MySQL | |
2978 | oracle Oracle | |
2979 | postgres Postgres | |
2980 | solid Solid | |
2981 | sqlite SQLite | |
2982 | sybase Sybase | |
2983 | ||
2984 | The current product name will be shown on the mode line following the | |
2985 | SQL mode indicator. | |
2986 | ||
2987 | The technique of setting `sql-mode-font-lock-defaults' directly in | |
2988 | your `.emacs' will no longer establish the default highlighting -- Use | |
2989 | `sql-product' to accomplish this. | |
2990 | ||
2991 | ANSI keywords are always highlighted. | |
2992 | ||
2993 | *** The function `sql-add-product-keywords' can be used to add | |
2994 | font-lock rules to the product specific rules. For example, to have | |
2995 | all identifiers ending in `_t' under MS SQLServer treated as a type, | |
2996 | you would use the following line in your .emacs file: | |
2997 | ||
2998 | (sql-add-product-keywords 'ms | |
2999 | '(("\\<\\w+_t\\>" . font-lock-type-face))) | |
3000 | ||
3001 | *** Oracle support includes keyword highlighting for Oracle 9i. | |
3002 | ||
3003 | Most SQL and PL/SQL keywords are implemented. SQL*Plus commands are | |
3004 | highlighted in `font-lock-doc-face'. | |
3005 | ||
3006 | *** Microsoft SQLServer support has been significantly improved. | |
3007 | ||
3008 | Keyword highlighting for SqlServer 2000 is implemented. | |
3009 | sql-interactive-mode defaults to use osql, rather than isql, because | |
3010 | osql flushes its error stream more frequently. Thus error messages | |
3011 | are displayed when they occur rather than when the session is | |
3012 | terminated. | |
3013 | ||
3014 | If the username and password are not provided to `sql-ms', osql is | |
3015 | called with the `-E' command line argument to use the operating system | |
3016 | credentials to authenticate the user. | |
3017 | ||
3018 | *** Postgres support is enhanced. | |
3019 | Keyword highlighting of Postgres 7.3 is implemented. Prompting for | |
3020 | the username and the pgsql `-U' option is added. | |
3021 | ||
3022 | *** MySQL support is enhanced. | |
3023 | Keyword highlighting of MySql 4.0 is implemented. | |
3024 | ||
3025 | *** Imenu support has been enhanced to locate tables, views, indexes, | |
3026 | packages, procedures, functions, triggers, sequences, rules, and | |
3027 | defaults. | |
3028 | ||
3029 | *** Added SQL->Start SQLi Session menu entry which calls the | |
3030 | appropriate `sql-interactive-mode' wrapper for the current setting of | |
3031 | `sql-product'. | |
3032 | ||
3033 | *** sql.el supports the SQLite interpreter--call 'sql-sqlite'. | |
3034 | ||
3035 | ** Fortran mode changes | |
3036 | ||
3037 | *** F90 mode and Fortran mode have support for `hs-minor-mode' (hideshow). | |
9858f6c3 | 3038 | It cannot deal with every code format, but ought to handle a sizable |
782f8379 GM |
3039 | majority. |
3040 | ||
3041 | *** F90 mode and Fortran mode have new navigation commands | |
3042 | `f90-end-of-block', `f90-beginning-of-block', `f90-next-block', | |
3043 | `f90-previous-block', `fortran-end-of-block', | |
3044 | `fortran-beginning-of-block'. | |
3045 | ||
3046 | *** Fortran mode does more font-locking by default. Use level 3 | |
3047 | highlighting for the old default. | |
3048 | ||
3049 | *** Fortran mode has a new variable `fortran-directive-re'. | |
3050 | Adapt this to match the format of any compiler directives you use. | |
3051 | Lines that match are never indented, and are given distinctive font-locking. | |
3052 | ||
3053 | *** The new function `f90-backslash-not-special' can be used to change | |
3054 | the syntax of backslashes in F90 buffers. | |
3055 | ||
3056 | ** Miscellaneous programming mode changes | |
3057 | ||
3058 | *** In sh-script, a continuation line is only indented if the backslash was | |
3059 | preceded by a SPC or a TAB. | |
3060 | ||
3061 | *** Perl mode has a new variable `perl-indent-continued-arguments'. | |
3062 | ||
3063 | *** The old Octave mode bindings C-c f and C-c i have been changed | |
3064 | to C-c C-f and C-c C-i. The C-c C-i subcommands now have duplicate | |
3065 | bindings on control characters--thus, C-c C-i C-b is the same as | |
3066 | C-c C-i b, and so on. | |
3067 | ||
3068 | *** Prolog mode has a new variable `prolog-font-lock-keywords' | |
3069 | to support use of font-lock. | |
3070 | ||
3071 | ** VC Changes | |
3072 | ||
3073 | *** New backends for Subversion and Meta-CVS. | |
3074 | ||
3075 | *** The new variable `vc-cvs-global-switches' specifies switches that | |
3076 | are passed to any CVS command invoked by VC. | |
3077 | ||
3078 | These switches are used as "global options" for CVS, which means they | |
3079 | are inserted before the command name. For example, this allows you to | |
3080 | specify a compression level using the `-z#' option for CVS. | |
3081 | ||
3082 | *** The key C-x C-q only changes the read-only state of the buffer | |
3083 | (toggle-read-only). It no longer checks files in or out. | |
3084 | ||
3085 | We made this change because we held a poll and found that many users | |
3086 | were unhappy with the previous behavior. If you do prefer this | |
3087 | behavior, you can bind `vc-toggle-read-only' to C-x C-q in your | |
3088 | `.emacs' file: | |
3089 | ||
3090 | (global-set-key "\C-x\C-q" 'vc-toggle-read-only) | |
3091 | ||
3092 | The function `vc-toggle-read-only' will continue to exist. | |
3093 | ||
3094 | *** VC-Annotate mode enhancements | |
3095 | ||
3096 | In VC-Annotate mode, you can now use the following key bindings for | |
3097 | enhanced functionality to browse the annotations of past revisions, or | |
3098 | to view diffs or log entries directly from vc-annotate-mode: | |
3099 | ||
3100 | P: annotates the previous revision | |
3101 | N: annotates the next revision | |
3102 | J: annotates the revision at line | |
3103 | A: annotates the revision previous to line | |
3104 | D: shows the diff of the revision at line with its previous revision | |
3105 | L: shows the log of the revision at line | |
3106 | W: annotates the workfile (most up to date) version | |
3107 | ||
3108 | ** pcl-cvs changes | |
3109 | ||
3110 | *** In pcl-cvs mode, there is a new `d y' command to view the diffs | |
3111 | between the local version of the file and yesterday's head revision | |
3112 | in the repository. | |
3113 | ||
3114 | *** In pcl-cvs mode, there is a new `d r' command to view the changes | |
3115 | anyone has committed to the repository since you last executed | |
3116 | `checkout', `update' or `commit'. That means using cvs diff options | |
3117 | -rBASE -rHEAD. | |
3118 | ||
3119 | ** Diff changes | |
3120 | ||
3121 | *** M-x diff uses Diff mode instead of Compilation mode. | |
3122 | ||
3123 | *** Diff mode key bindings changed. | |
3124 | ||
3125 | These are the new bindings: | |
3126 | ||
3127 | C-c C-e diff-ediff-patch (old M-A) | |
3128 | C-c C-n diff-restrict-view (old M-r) | |
3129 | C-c C-r diff-reverse-direction (old M-R) | |
3130 | C-c C-u diff-context->unified (old M-U) | |
3131 | C-c C-w diff-refine-hunk (old C-c C-r) | |
3132 | ||
3133 | To convert unified to context format, use C-u C-c C-u. | |
3134 | In addition, C-c C-u now operates on the region | |
3135 | in Transient Mark mode when the mark is active. | |
3136 | ||
3137 | ** EDiff changes. | |
3138 | ||
3139 | *** When comparing directories. | |
3140 | Typing D brings up a buffer that lists the differences between the contents of | |
3141 | directories. Now it is possible to use this buffer to copy the missing files | |
3142 | from one directory to another. | |
3143 | ||
3144 | *** When comparing files or buffers. | |
3145 | Typing the = key now offers to perform the word-by-word comparison of the | |
3146 | currently highlighted regions in an inferior Ediff session. If you answer 'n' | |
3147 | then it reverts to the old behavior and asks the user to select regions for | |
3148 | comparison. | |
3149 | ||
3150 | *** The new command `ediff-backup' compares a file with its most recent | |
3151 | backup using `ediff'. If you specify the name of a backup file, | |
3152 | `ediff-backup' compares it with the file of which it is a backup. | |
3153 | ||
3154 | ** Etags changes. | |
3155 | ||
3156 | *** New regular expressions features | |
3157 | ||
3158 | **** New syntax for regular expressions, multi-line regular expressions. | |
3159 | ||
3160 | The syntax --ignore-case-regexp=/regex/ is now undocumented and retained | |
3161 | only for backward compatibility. The new equivalent syntax is | |
3162 | --regex=/regex/i. More generally, it is --regex=/TAGREGEX/TAGNAME/MODS, | |
3163 | where `/TAGNAME' is optional, as usual, and MODS is a string of 0 or | |
3164 | more characters among `i' (ignore case), `m' (multi-line) and `s' | |
3165 | (single-line). The `m' and `s' modifiers behave as in Perl regular | |
3166 | expressions: `m' allows regexps to match more than one line, while `s' | |
3167 | (which implies `m') means that `.' matches newlines. The ability to | |
3168 | span newlines allows writing of much more powerful regular expressions | |
3169 | and rapid prototyping for tagging new languages. | |
3170 | ||
3171 | **** Regular expressions can use char escape sequences as in GCC. | |
3172 | ||
3173 | The escaped character sequence \a, \b, \d, \e, \f, \n, \r, \t, \v, | |
3174 | respectively, stand for the ASCII characters BEL, BS, DEL, ESC, FF, NL, | |
3175 | CR, TAB, VT. | |
3176 | ||
3177 | **** Regular expressions can be bound to a given language. | |
3178 | ||
3179 | The syntax --regex={LANGUAGE}REGEX means that REGEX is used to make tags | |
3180 | only for files of language LANGUAGE, and ignored otherwise. This is | |
3181 | particularly useful when storing regexps in a file. | |
3182 | ||
3183 | **** Regular expressions can be read from a file. | |
3184 | ||
3185 | The --regex=@regexfile option means read the regexps from a file, one | |
3186 | per line. Lines beginning with space or tab are ignored. | |
3187 | ||
3188 | *** New language parsing features | |
3189 | ||
3190 | **** New language HTML. | |
3191 | ||
3192 | Tags are generated for `title' as well as `h1', `h2', and `h3'. Also, | |
3193 | when `name=' is used inside an anchor and whenever `id=' is used. | |
3194 | ||
3195 | **** New language PHP. | |
3196 | ||
3197 | Functions, classes and defines are tags. If the --members option is | |
3198 | specified to etags, variables are tags also. | |
3199 | ||
3200 | **** New language Lua. | |
3201 | ||
3202 | All functions are tagged. | |
3203 | ||
3204 | **** The `::' qualifier triggers C++ parsing in C file. | |
3205 | ||
3206 | Previously, only the `template' and `class' keywords had this effect. | |
3207 | ||
3208 | **** The GCC __attribute__ keyword is now recognized and ignored. | |
3209 | ||
3210 | **** In C and derived languages, etags creates tags for #undef | |
3211 | ||
3212 | **** In Makefiles, constants are tagged. | |
3213 | ||
3214 | If you want the old behavior instead, thus avoiding to increase the | |
3215 | size of the tags file, use the --no-globals option. | |
3216 | ||
3217 | **** In Perl, packages are tags. | |
3218 | ||
3219 | Subroutine tags are named from their package. You can jump to sub tags | |
3220 | as you did before, by the sub name, or additionally by looking for | |
3221 | package::sub. | |
3222 | ||
3223 | **** In Prolog, etags creates tags for rules in addition to predicates. | |
3224 | ||
3225 | **** New default keywords for TeX. | |
3226 | ||
3227 | The new keywords are def, newcommand, renewcommand, newenvironment and | |
3228 | renewenvironment. | |
3229 | ||
3230 | *** Honor #line directives. | |
3231 | ||
3232 | When Etags parses an input file that contains C preprocessor's #line | |
3233 | directives, it creates tags using the file name and line number | |
3234 | specified in those directives. This is useful when dealing with code | |
3235 | created from Cweb source files. When Etags tags the generated file, it | |
3236 | writes tags pointing to the source file. | |
3237 | ||
3238 | *** New option --parse-stdin=FILE. | |
3239 | ||
3240 | This option is mostly useful when calling etags from programs. It can | |
3241 | be used (only once) in place of a file name on the command line. Etags | |
3242 | reads from standard input and marks the produced tags as belonging to | |
3243 | the file FILE. | |
3244 | ||
782f8379 GM |
3245 | ** Ctags changes. |
3246 | ||
3247 | *** Ctags now allows duplicate tags | |
3248 | ||
3249 | ** Rmail changes | |
3250 | ||
3251 | *** Support for `movemail' from GNU mailutils was added to Rmail. | |
3252 | ||
73187b26 | 3253 | This version of `movemail' allows you to read mail from a wide range of |
782f8379 GM |
3254 | mailbox formats, including remote POP3 and IMAP4 mailboxes with or |
3255 | without TLS encryption. If GNU mailutils is installed on the system | |
3256 | and its version of `movemail' can be found in exec-path, it will be | |
3257 | used instead of the native one. | |
3258 | ||
3259 | *** The new commands rmail-end-of-message and rmail-summary end-of-message, | |
3260 | by default bound to `/', go to the end of the current mail message in | |
3261 | Rmail and Rmail summary buffers. | |
3262 | ||
3263 | *** Rmail now displays 5-digit message ids in its summary buffer. | |
3264 | ||
3265 | ** Gnus package | |
3266 | ||
3267 | *** Gnus now includes Sieve and PGG | |
3268 | ||
3269 | Sieve is a library for managing Sieve scripts. PGG is a library to handle | |
3270 | PGP/MIME. | |
3271 | ||
3272 | *** There are many news features, bug fixes and improvements. | |
3273 | ||
3274 | See the file GNUS-NEWS or the node "Oort Gnus" in the Gnus manual for details. | |
3275 | ||
3276 | ** MH-E changes. | |
3277 | ||
3278 | Upgraded to MH-E version 8.0.3. There have been major changes since | |
3279 | version 5.0.2; see MH-E-NEWS for details. | |
3280 | ||
3281 | ** Miscellaneous mail changes | |
3282 | ||
3283 | *** The new variable `mail-default-directory' specifies | |
3284 | `default-directory' for mail buffers. This directory is used for | |
3285 | auto-save files of mail buffers. It defaults to "~/". | |
3286 | ||
3287 | *** The mode line can indicate new mail in a directory or file. | |
3288 | ||
3289 | See the documentation of the user option `display-time-mail-directory'. | |
3290 | ||
3291 | ** Calendar changes | |
3292 | ||
3293 | *** There is a new calendar package, icalendar.el, that can be used to | |
3294 | convert Emacs diary entries to/from the iCalendar format. | |
3295 | ||
3296 | *** The new package cal-html.el writes HTML files with calendar and | |
3297 | diary entries. | |
3298 | ||
3299 | *** The new functions `diary-from-outlook', `diary-from-outlook-gnus', | |
3300 | and `diary-from-outlook-rmail' can be used to import diary entries | |
3301 | from Outlook-format appointments in mail messages. The variable | |
3302 | `diary-outlook-formats' can be customized to recognize additional | |
3303 | formats. | |
3304 | ||
3305 | *** The procedure for activating appointment reminders has changed: | |
3306 | use the new function `appt-activate'. The new variable | |
3307 | `appt-display-format' controls how reminders are displayed, replacing | |
3308 | `appt-issue-message', `appt-visible', and `appt-msg-window'. | |
3309 | ||
3310 | *** The function `simple-diary-display' now by default sets a header line. | |
3311 | This can be controlled through the variables `diary-header-line-flag' | |
3312 | and `diary-header-line-format'. | |
3313 | ||
3314 | *** Diary sexp entries can have custom marking in the calendar. | |
3315 | Diary sexp functions which only apply to certain days (such as | |
3316 | `diary-block' or `diary-cyclic') now take an optional parameter MARK, | |
3317 | which is the name of a face or a single-character string indicating | |
3318 | how to highlight the day in the calendar display. Specifying a | |
3319 | single-character string as @var{mark} places the character next to the | |
3320 | day in the calendar. Specifying a face highlights the day with that | |
3321 | face. This lets you have different colors or markings for vacations, | |
3322 | appointments, paydays or anything else using a sexp. | |
3323 | ||
3324 | *** The meanings of C-x < and C-x > have been interchanged. | |
3325 | < means to scroll backward in time, and > means to scroll forward. | |
3326 | ||
3327 | *** You can now use < and >, instead of C-x < and C-x >, to scroll | |
3328 | the calendar left or right. | |
3329 | ||
3330 | *** The new function `calendar-goto-day-of-year' (g D) prompts for a | |
3331 | year and day number, and moves to that date. Negative day numbers | |
3332 | count backward from the end of the year. | |
3333 | ||
3334 | *** The new Calendar function `calendar-goto-iso-week' (g w) | |
3335 | prompts for a year and a week number, and moves to the first | |
3336 | day of that ISO week. | |
3337 | ||
3338 | *** The functions `holiday-easter-etc' and `holiday-advent' now take | |
3339 | optional arguments, in order to only report on the specified holiday | |
3340 | rather than all. This makes customization of variables such as | |
3341 | `christian-holidays' simpler. | |
3342 | ||
3343 | *** The new variable `calendar-minimum-window-height' affects the | |
3344 | window generated by the function `generate-calendar-window'. | |
3345 | ||
3346 | ** Speedbar changes | |
3347 | ||
3348 | *** Speedbar items can now be selected by clicking mouse-1, based on | |
3349 | the `mouse-1-click-follows-link' mechanism. | |
3350 | ||
3351 | *** The new command `speedbar-toggle-line-expansion', bound to SPC, | |
3352 | contracts or expands the line under the cursor. | |
3353 | ||
3354 | *** New command `speedbar-create-directory', bound to `M'. | |
3355 | ||
3356 | *** The new commands `speedbar-expand-line-descendants' and | |
3357 | `speedbar-contract-line-descendants', bound to `[' and `]' | |
3358 | respectively, expand and contract the line under cursor with all of | |
cd1181db | 3359 | its descendants. |
782f8379 GM |
3360 | |
3361 | *** The new user option `speedbar-use-tool-tips-flag', if non-nil, | |
3362 | means to display tool-tips for speedbar items. | |
3363 | ||
3364 | *** The new user option `speedbar-query-confirmation-method' controls | |
3365 | how querying is performed for file operations. A value of 'always | |
3366 | means to always query before file operations; 'none-but-delete means | |
3367 | to not query before any file operations, except before a file | |
3368 | deletion. | |
3369 | ||
3370 | *** The new user option `speedbar-select-frame-method' specifies how | |
3371 | to select a frame for displaying a file opened with the speedbar. A | |
3372 | value of 'attached means to use the attached frame (the frame that | |
3373 | speedbar was started from.) A number such as 1 or -1 means to pass | |
3374 | that number to `other-frame'. | |
3375 | ||
3376 | *** SPC and DEL are no longer bound to scroll up/down in the speedbar | |
3377 | keymap. | |
3378 | ||
3379 | *** The frame management code in speedbar.el has been split into a new | |
3380 | `dframe' library. Emacs Lisp code that makes use of the speedbar | |
3381 | should use `dframe-attached-frame' instead of | |
3382 | `speedbar-attached-frame', `dframe-timer' instead of `speedbar-timer', | |
3383 | `dframe-close-frame' instead of `speedbar-close-frame', and | |
3384 | `dframe-activity-change-focus-flag' instead of | |
3385 | `speedbar-activity-change-focus-flag'. The variables | |
3386 | `speedbar-update-speed' and `speedbar-navigating-speed' are also | |
3387 | obsolete; use `dframe-update-speed' instead. | |
3388 | ||
3389 | ** battery.el changes | |
3390 | ||
3391 | *** display-battery-mode replaces display-battery. | |
3392 | ||
3393 | *** battery.el now works on recent versions of OS X. | |
3394 | ||
3395 | ** Games | |
3396 | ||
3397 | *** The game `mpuz' is enhanced. | |
3398 | ||
3399 | `mpuz' now allows the 2nd factor not to have two identical digits. By | |
3400 | default, all trivial operations involving whole lines are performed | |
3401 | automatically. The game uses faces for better visual feedback. | |
3402 | ||
3403 | ** Obsolete and deleted packages | |
3404 | ||
3405 | *** fast-lock.el and lazy-lock.el are obsolete. Use jit-lock.el instead. | |
3406 | ||
3407 | *** iso-acc.el is now obsolete. Use one of the latin input methods instead. | |
3408 | ||
3409 | *** zone-mode.el is now obsolete. Use dns-mode.el instead. | |
3410 | ||
3411 | *** cplus-md.el has been deleted. | |
3412 | ||
3413 | ** Miscellaneous | |
3414 | ||
3415 | *** The variable `woman-topic-at-point' is renamed | |
3416 | to `woman-use-topic-at-point' and behaves differently: if this | |
3417 | variable is non-nil, the `woman' command uses the word at point | |
3418 | automatically, without asking for a confirmation. Otherwise, the word | |
3419 | at point is suggested as default, but not inserted at the prompt. | |
3420 | ||
3421 | *** You can now customize `fill-nobreak-predicate' to control where | |
3422 | filling can break lines. The value is now normally a list of | |
3423 | functions, but it can also be a single function, for compatibility. | |
3424 | ||
3425 | Emacs provide two predicates, `fill-single-word-nobreak-p' and | |
3426 | `fill-french-nobreak-p', for use as the value of | |
3427 | `fill-nobreak-predicate'. | |
3428 | ||
3429 | *** M-x view-file and commands that use it now avoid interfering | |
3430 | with special modes such as Tar mode. | |
3431 | ||
3432 | *** `global-whitespace-mode' is a new alias for `whitespace-global-mode'. | |
3433 | ||
3434 | *** The saveplace.el package now filters out unreadable files. | |
3435 | ||
3436 | When you exit Emacs, the saved positions in visited files no longer | |
3437 | include files that aren't readable, e.g. files that don't exist. | |
3438 | Customize the new option `save-place-forget-unreadable-files' to nil | |
3439 | to get the old behavior. The new options `save-place-save-skipped' | |
3440 | and `save-place-skip-check-regexp' allow further fine-tuning of this | |
3441 | feature. | |
3442 | ||
3443 | *** Commands `winner-redo' and `winner-undo', from winner.el, are now | |
3444 | bound to C-c <left> and C-c <right>, respectively. This is an | |
3445 | incompatible change. | |
3446 | ||
3447 | *** The type-break package now allows `type-break-file-name' to be nil | |
3448 | and if so, doesn't store any data across sessions. This is handy if | |
3449 | you don't want the `.type-break' file in your home directory or are | |
3450 | annoyed by the need for interaction when you kill Emacs. | |
3451 | ||
3452 | *** `ps-print' can now print characters from the mule-unicode charsets. | |
3453 | ||
3454 | Printing text with characters from the mule-unicode-* sets works with | |
3455 | `ps-print', provided that you have installed the appropriate BDF | |
3456 | fonts. See the file INSTALL for URLs where you can find these fonts. | |
3457 | ||
3458 | *** New command `strokes-global-set-stroke-string'. | |
3459 | This is like `strokes-global-set-stroke', but it allows you to bind | |
3460 | the stroke directly to a string to insert. This is convenient for | |
3461 | using strokes as an input method. | |
3462 | ||
3463 | *** In Outline mode, `hide-body' no longer hides lines at the top | |
3464 | of the file that precede the first header line. | |
3465 | ||
3466 | *** `hide-ifdef-mode' now uses overlays rather than selective-display | |
3467 | to hide its text. This should be mostly transparent but slightly | |
3468 | changes the behavior of motion commands like C-e and C-p. | |
3469 | ||
3470 | *** In Artist mode the variable `artist-text-renderer' has been | |
3471 | renamed to `artist-text-renderer-function'. The old name is still | |
3472 | available as alias. | |
3473 | ||
3474 | *** In Enriched mode, `set-left-margin' and `set-right-margin' are now | |
3475 | by default bound to `C-c [' and `C-c ]' instead of the former `C-c C-l' | |
3476 | and `C-c C-r'. | |
3477 | ||
3478 | *** `partial-completion-mode' now handles partial completion on directory names. | |
3479 | ||
3480 | *** You can now disable pc-selection-mode after enabling it. | |
3481 | ||
3482 | M-x pc-selection-mode behaves like a proper minor mode, and with no | |
3483 | argument it toggles the mode. Turning off PC-Selection mode restores | |
3484 | the global key bindings that were replaced by turning on the mode. | |
3485 | ||
3486 | *** `uniquify-strip-common-suffix' tells uniquify to prefer | |
3487 | `file|dir1' and `file|dir2' to `file|dir1/subdir' and `file|dir2/subdir'. | |
3488 | ||
3489 | *** New user option `add-log-always-start-new-record'. | |
3490 | ||
3491 | When this option is enabled, M-x add-change-log-entry always | |
3492 | starts a new record regardless of when the last record is. | |
3493 | ||
3494 | *** M-x compare-windows now can automatically skip non-matching text to | |
3495 | resync points in both windows. | |
3496 | ||
3497 | *** PO translation files are decoded according to their MIME headers | |
3498 | when Emacs visits them. | |
3499 | ||
3500 | *** Telnet now prompts you for a port number with C-u M-x telnet. | |
3501 | ||
3502 | *** calculator.el now has radix grouping mode. | |
3503 | ||
3504 | To enable this, set `calculator-output-radix' non-nil. In this mode a | |
3505 | separator character is used every few digits, making it easier to see | |
3506 | byte boundaries etc. For more info, see the documentation of the | |
3507 | variable `calculator-radix-grouping-mode'. | |
3508 | ||
3509 | *** LDAP support now defaults to ldapsearch from OpenLDAP version 2. | |
3510 | ||
3511 | *** The terminal emulation code in term.el has been improved; it can | |
3512 | run most curses applications now. | |
3513 | ||
3514 | *** Support for `magic cookie' standout modes has been removed. | |
3515 | ||
3516 | Emacs still works on terminals that require magic cookies in order to | |
3517 | use standout mode, but they can no longer display mode-lines in | |
3518 | inverse-video. | |
3519 | ||
3520 | \f | |
3521 | * Changes in Emacs 22.1 on non-free operating systems | |
3522 | ||
3523 | ** The HOME directory defaults to Application Data under the user profile. | |
3524 | ||
3525 | If you used a previous version of Emacs without setting the HOME | |
3526 | environment variable and a `.emacs' was saved, then Emacs will continue | |
3527 | using C:/ as the default HOME. But if you are installing Emacs afresh, | |
3528 | the default location will be the "Application Data" (or similar | |
3529 | localized name) subdirectory of your user profile. A typical location | |
3530 | of this directory is "C:\Documents and Settings\USERNAME\Application Data", | |
3531 | where USERNAME is your user name. | |
3532 | ||
3533 | This change means that users can now have their own `.emacs' files on | |
3534 | shared computers, and the default HOME directory is less likely to be | |
3535 | read-only on computers that are administered by someone else. | |
3536 | ||
3537 | ** Images are now supported on MS Windows. | |
3538 | ||
3539 | PBM and XBM images are supported out of the box. Other image formats | |
3540 | depend on external libraries. All of these libraries have been ported | |
3541 | to Windows, and can be found in both source and binary form at | |
3542 | http://gnuwin32.sourceforge.net/. Note that libpng also depends on | |
3543 | zlib, and tiff depends on the version of jpeg that it was compiled | |
3544 | against. For additional information, see nt/INSTALL. | |
3545 | ||
3546 | ** Sound is now supported on MS Windows. | |
3547 | ||
3548 | WAV format is supported on all versions of Windows, other formats such | |
3549 | as AU, AIFF and MP3 may be supported in the more recent versions of | |
3550 | Windows, or when other software provides hooks into the system level | |
3551 | sound support for those formats. | |
3552 | ||
3553 | ** Tooltips now work on MS Windows. | |
3554 | ||
3555 | See the Emacs 21.1 NEWS entry for tooltips for details. | |
3556 | ||
3557 | ** Pointing devices with more than 3 buttons are now supported on MS Windows. | |
3558 | ||
3559 | The new variable `w32-pass-extra-mouse-buttons-to-system' controls | |
3560 | whether Emacs should handle the extra buttons itself (the default), or | |
3561 | pass them to Windows to be handled with system-wide functions. | |
3562 | ||
3563 | ** Passing resources on the command line now works on MS Windows. | |
3564 | ||
3565 | You can use --xrm to pass resource settings to Emacs, overriding any | |
3566 | existing values. For example: | |
3567 | ||
3568 | emacs --xrm "Emacs.Background:red" --xrm "Emacs.Geometry:100x20" | |
3569 | ||
3570 | will start up Emacs on an initial frame of 100x20 with red background, | |
3571 | irrespective of geometry or background setting on the Windows registry. | |
3572 | ||
3573 | ** Emacs takes note of colors defined in Control Panel on MS-Windows. | |
3574 | ||
3575 | The Control Panel defines some default colors for applications in much | |
3576 | the same way as wildcard X Resources do on X. Emacs now adds these | |
3577 | colors to the colormap prefixed by System (eg SystemMenu for the | |
3578 | default Menu background, SystemMenuText for the foreground), and uses | |
3579 | some of them to initialize some of the default faces. | |
3580 | `list-colors-display' shows the list of System color names, in case | |
3581 | you wish to use them in other faces. | |
3582 | ||
3583 | ** Running in a console window in Windows now uses the console size. | |
3584 | ||
3585 | Previous versions of Emacs erred on the side of having a usable Emacs | |
3586 | through telnet, even though that was inconvenient if you use Emacs in | |
3587 | a local console window with a scrollback buffer. The default value of | |
3588 | w32-use-full-screen-buffer is now nil, which favors local console | |
3589 | windows. Recent versions of Windows telnet also work well with this | |
3590 | setting. If you are using an older telnet server then Emacs detects | |
3591 | that the console window dimensions that are reported are not sane, and | |
3592 | defaults to 80x25. If you use such a telnet server regularly at a size | |
3593 | other than 80x25, you can still manually set | |
3594 | w32-use-full-screen-buffer to t. | |
3595 | ||
3596 | ** Different shaped mouse pointers are supported on MS Windows. | |
3597 | ||
3598 | The mouse pointer changes shape depending on what is under the pointer. | |
3599 | ||
3600 | ** On MS Windows, the "system caret" now follows the cursor. | |
3601 | ||
3602 | This enables Emacs to work better with programs that need to track the | |
3603 | cursor, for example screen magnifiers and text to speech programs. | |
3604 | When such a program is in use, the system caret is made visible | |
3605 | instead of Emacs drawing its own cursor. This seems to be required by | |
3606 | some programs. The new variable w32-use-visible-system-caret allows | |
3607 | the caret visibility to be manually toggled. | |
3608 | ||
3609 | ** On MS Windows NT/W2K/XP, Emacs uses Unicode for clipboard operations. | |
3610 | ||
3611 | Those systems use Unicode internally, so this allows Emacs to share | |
3612 | multilingual text with other applications. On other versions of | |
3613 | MS Windows, Emacs now uses the appropriate locale coding-system, so | |
3614 | the clipboard should work correctly for your local language without | |
3615 | any customizations. | |
3616 | ||
3617 | ** On Mac OS, `keyboard-coding-system' changes based on the keyboard script. | |
3618 | ||
3619 | ** The variable `mac-keyboard-text-encoding' and the constants | |
3620 | `kTextEncodingMacRoman', `kTextEncodingISOLatin1', and | |
3621 | `kTextEncodingISOLatin2' are obsolete. | |
3622 | ||
3623 | ** The variable `mac-command-key-is-meta' is obsolete. Use | |
3624 | `mac-command-modifier' and `mac-option-modifier' instead. | |
3625 | \f | |
3626 | * Incompatible Lisp Changes in Emacs 22.1 | |
3627 | ||
3628 | ** Mode line display ignores text properties as well as the | |
3629 | :propertize and :eval forms in the value of a variable whose | |
3630 | `risky-local-variable' property is nil. | |
3631 | ||
3632 | The function `comint-send-input' now accepts 3 optional arguments: | |
3633 | ||
3634 | (comint-send-input &optional no-newline artificial) | |
3635 | ||
3636 | Callers sending input not from the user should use bind the 3rd | |
3637 | argument `artificial' to a non-nil value, to prevent Emacs from | |
3638 | deleting the part of subprocess output that matches the input. | |
3639 | ||
3640 | ** The `read-file-name' function now returns a null string if the | |
3641 | user just types RET. | |
3642 | ||
3643 | ** The variables post-command-idle-hook and post-command-idle-delay have | |
3644 | been removed. Use run-with-idle-timer instead. | |
3645 | ||
3646 | ** A hex or octal escape in a string constant forces the string to | |
3647 | be multibyte or unibyte, respectively. | |
3648 | ||
3649 | ** The explicit method of creating a display table element by | |
3650 | combining a face number and a character code into a numeric | |
3651 | glyph code is deprecated. | |
3652 | ||
3653 | Instead, the new functions `make-glyph-code', `glyph-char', and | |
3654 | `glyph-face' must be used to create and decode glyph codes in | |
3655 | display tables. | |
3656 | ||
3657 | ** `suppress-keymap' now works by remapping `self-insert-command' to | |
3658 | the command `undefined'. (In earlier Emacs versions, it used | |
3659 | `substitute-key-definition' to rebind self inserting characters to | |
3660 | `undefined'.) | |
3661 | ||
3662 | ** The third argument of `accept-process-output' is now milliseconds. | |
3663 | It used to be microseconds. | |
3664 | ||
3665 | ** The function find-operation-coding-system may be called with a cons | |
3666 | (FILENAME . BUFFER) in the second argument if the first argument | |
3667 | OPERATION is `insert-file-contents', and thus a function registered in | |
3668 | `file-coding-system-alist' is also called with such an argument. | |
3669 | ||
3670 | ** When Emacs receives a USR1 or USR2 signal, this generates | |
3671 | input events: sigusr1 or sigusr2. Use special-event-map to | |
3672 | handle these events. | |
3673 | ||
3674 | ** The variable `memory-full' now remains t until | |
3675 | there is no longer a shortage of memory. | |
3676 | ||
3677 | ** Support for Mocklisp has been removed. | |
3678 | ||
3679 | \f | |
3680 | * Lisp Changes in Emacs 22.1 | |
3681 | ||
3682 | ** General Lisp changes: | |
3683 | ||
3684 | *** New syntax: \s now stands for the SPACE character. | |
3685 | ||
3686 | `?\s' is a new way to write the space character. You must make sure | |
3687 | it is not followed by a dash, since `?\s-...' indicates the "super" | |
3688 | modifier. However, it would be strange to write a character constant | |
3689 | and a following symbol (beginning with `-') with no space between | |
3690 | them. | |
3691 | ||
3692 | `\s' stands for space in strings, too, but it is not really meant for | |
3693 | strings; it is easier and nicer just to write a space. | |
3694 | ||
3695 | *** New syntax: \uXXXX and \UXXXXXXXX specify Unicode code points in hex. | |
3696 | ||
3697 | For instance, you can use "\u0428" to specify a string consisting of | |
3698 | CYRILLIC CAPITAL LETTER SHA, or `"U0001D6E2" to specify one consisting | |
3699 | of MATHEMATICAL ITALIC CAPITAL ALPHA (the latter is greater than | |
3700 | #xFFFF and thus needs the longer syntax). | |
3701 | ||
3702 | This syntax works for both character constants and strings. | |
3703 | ||
3704 | *** New function `unsafep' determines whether a Lisp form is safe. | |
3705 | ||
3706 | It returns nil if the given Lisp form can't possibly do anything | |
3707 | dangerous; otherwise it returns a reason why the form might be unsafe | |
3708 | (calls unknown function, alters global variable, etc.). | |
3709 | ||
3710 | *** The function `eql' is now available without requiring the CL package. | |
3711 | ||
3712 | *** The new function `memql' is like `memq', but uses `eql' for comparison, | |
3713 | that is, floats are compared by value and other elements with `eq'. | |
3714 | ||
3715 | *** New functions `string-or-null-p' and `booleanp'. | |
3716 | ||
37cc095b MB |
3717 | `string-or-null-p' returns non-nil if OBJECT is a string or nil. |
3718 | `booleanp' returns non-nil if OBJECT is t or nil. | |
782f8379 GM |
3719 | |
3720 | *** `makehash' is now obsolete. Use `make-hash-table' instead. | |
3721 | ||
3722 | *** Minor change in the function `format'. | |
3723 | ||
3724 | Some flags that were accepted but not implemented (such as "*") are no | |
3725 | longer accepted. | |
3726 | ||
3727 | *** `add-to-list' takes an optional third argument, APPEND. | |
3728 | ||
3729 | If APPEND is non-nil, the new element gets added at the end of the | |
3730 | list instead of at the beginning. This change actually occurred in | |
3731 | Emacs 21.1, but was not documented then. | |
3732 | ||
3733 | *** New function `add-to-ordered-list' is like `add-to-list' but | |
3734 | associates a numeric ordering of each element added to the list. | |
3735 | ||
3736 | *** New function `add-to-history' adds an element to a history list. | |
3737 | ||
3738 | Lisp packages should use this function to add elements to their | |
3739 | history lists. | |
3740 | ||
3741 | If `history-delete-duplicates' is non-nil, it removes duplicates of | |
3742 | the new element from the history list it updates. | |
3743 | ||
3744 | *** New function `copy-tree' makes a copy of a tree. | |
3745 | ||
3746 | It recursively copies through both CARs and CDRs. | |
3747 | ||
3748 | *** New function `delete-dups' deletes `equal' duplicate elements from a list. | |
3749 | ||
3750 | It modifies the list destructively, like `delete'. Of several `equal' | |
3751 | occurrences of an element in the list, the one that's kept is the | |
3752 | first one. | |
3753 | ||
3754 | *** New function `rassq-delete-all'. | |
3755 | ||
3756 | (rassq-delete-all VALUE ALIST) deletes, from ALIST, each element whose | |
3757 | CDR is `eq' to the specified value. | |
3758 | ||
3759 | *** Functions `get' and `plist-get' no longer give errors for bad plists. | |
3760 | ||
3761 | They return nil for a malformed property list or if the list is | |
3762 | cyclic. | |
3763 | ||
3764 | *** New functions `lax-plist-get' and `lax-plist-put'. | |
3765 | ||
3766 | They are like `plist-get' and `plist-put', except that they compare | |
3767 | the property name using `equal' rather than `eq'. | |
3768 | ||
3769 | *** The function `number-sequence' makes a list of equally-separated numbers. | |
3770 | ||
3771 | For instance, (number-sequence 4 9) returns (4 5 6 7 8 9). By | |
3772 | default, the separation is 1, but you can specify a different | |
3773 | separation as the third argument. (number-sequence 1.5 6 2) returns | |
3774 | (1.5 3.5 5.5). | |
3775 | ||
3776 | *** New variables `most-positive-fixnum' and `most-negative-fixnum'. | |
3777 | ||
3778 | They hold the largest and smallest possible integer values. | |
3779 | ||
3780 | *** The function `expt' handles negative exponents differently. | |
3781 | The value for `(expt A B)', if both A and B are integers and B is | |
3782 | negative, is now a float. For example: (expt 2 -2) => 0.25. | |
3783 | ||
3784 | *** The function `atan' now accepts an optional second argument. | |
3785 | ||
3786 | When called with 2 arguments, as in `(atan Y X)', `atan' returns the | |
3787 | angle in radians between the vector [X, Y] and the X axis. (This is | |
3788 | equivalent to the standard C library function `atan2'.) | |
3789 | ||
3790 | *** New macro `with-case-table' | |
3791 | ||
3792 | This executes the body with the case table temporarily set to a given | |
3793 | case table. | |
3794 | ||
3795 | *** New macro `with-local-quit' temporarily allows quitting. | |
3796 | ||
3797 | A quit inside the body of `with-local-quit' is caught by the | |
3798 | `with-local-quit' form itself, but another quit will happen later once | |
3799 | the code that has inhibited quitting exits. | |
3800 | ||
3801 | This is for use around potentially blocking or long-running code | |
3802 | inside timer functions and `post-command-hook' functions. | |
3803 | ||
3804 | *** New macro `define-obsolete-function-alias'. | |
3805 | ||
3806 | This combines `defalias' and `make-obsolete'. | |
3807 | ||
3808 | *** New macro `eval-at-startup' specifies expressions to | |
3809 | evaluate when Emacs starts up. If this is done after startup, | |
3810 | it evaluates those expressions immediately. | |
3811 | ||
3812 | This is useful in packages that can be preloaded. | |
3813 | ||
3814 | *** New function `macroexpand-all' expands all macros in a form. | |
3815 | ||
3816 | It is similar to the Common-Lisp function of the same name. | |
3817 | One difference is that it guarantees to return the original argument | |
3818 | if no expansion is done, which can be tested using `eq'. | |
3819 | ||
3820 | *** A function or macro's doc string can now specify the calling pattern. | |
3821 | ||
3822 | You put this info in the doc string's last line. It should be | |
3823 | formatted so as to match the regexp "\n\n(fn .*)\\'". If you don't | |
3824 | specify this explicitly, Emacs determines it from the actual argument | |
3825 | names. Usually that default is right, but not always. | |
3826 | ||
3827 | *** New variable `print-continuous-numbering'. | |
3828 | ||
3829 | When this is non-nil, successive calls to print functions use a single | |
3830 | numbering scheme for circular structure references. This is only | |
3831 | relevant when `print-circle' is non-nil. | |
3832 | ||
3833 | When you bind `print-continuous-numbering' to t, you should | |
3834 | also bind `print-number-table' to nil. | |
3835 | ||
3836 | *** `list-faces-display' takes an optional argument, REGEXP. | |
3837 | ||
3838 | If it is non-nil, the function lists only faces matching this regexp. | |
3839 | ||
3840 | *** New hook `command-error-function'. | |
3841 | ||
3842 | By setting this variable to a function, you can control | |
3843 | how the editor command loop shows the user an error message. | |
3844 | ||
3845 | *** `debug-on-entry' accepts primitive functions that are not special forms. | |
3846 | ||
3847 | ** Lisp code indentation features: | |
3848 | ||
3849 | *** The `defmacro' form can contain indentation and edebug declarations. | |
3850 | ||
3851 | These declarations specify how to indent the macro calls in Lisp mode | |
3852 | and how to debug them with Edebug. You write them like this: | |
3853 | ||
3854 | (defmacro NAME LAMBDA-LIST [DOC-STRING] [DECLARATION ...] ...) | |
3855 | ||
3856 | DECLARATION is a list `(declare DECLARATION-SPECIFIER ...)'. The | |
3857 | possible declaration specifiers are: | |
3858 | ||
3859 | (indent INDENT) | |
3860 | Set NAME's `lisp-indent-function' property to INDENT. | |
3861 | ||
3862 | (edebug DEBUG) | |
3863 | Set NAME's `edebug-form-spec' property to DEBUG. (This is | |
3864 | equivalent to writing a `def-edebug-spec' for the macro, | |
3865 | but this is cleaner.) | |
3866 | ||
3867 | *** cl-indent now allows customization of Indentation of backquoted forms. | |
3868 | ||
3869 | See the new user option `lisp-backquote-indentation'. | |
3870 | ||
3871 | *** cl-indent now handles indentation of simple and extended `loop' forms. | |
3872 | ||
3873 | The new user options `lisp-loop-keyword-indentation', | |
3874 | `lisp-loop-forms-indentation', and `lisp-simple-loop-indentation' can | |
3875 | be used to customize the indentation of keywords and forms in loop | |
3876 | forms. | |
3877 | ||
3878 | ** Variable aliases: | |
3879 | ||
3880 | *** New function: defvaralias ALIAS-VAR BASE-VAR [DOCSTRING] | |
3881 | ||
3882 | This function defines the symbol ALIAS-VAR as a variable alias for | |
3883 | symbol BASE-VAR. This means that retrieving the value of ALIAS-VAR | |
3884 | returns the value of BASE-VAR, and changing the value of ALIAS-VAR | |
3885 | changes the value of BASE-VAR. | |
3886 | ||
3887 | DOCSTRING, if present, is the documentation for ALIAS-VAR; else it has | |
3888 | the same documentation as BASE-VAR. | |
3889 | ||
3890 | *** The macro `define-obsolete-variable-alias' combines `defvaralias' and | |
3891 | `make-obsolete-variable'. | |
3892 | ||
3893 | *** New function: indirect-variable VARIABLE | |
3894 | ||
3895 | This function returns the variable at the end of the chain of aliases | |
3896 | of VARIABLE. If VARIABLE is not a symbol, or if VARIABLE is not | |
3897 | defined as an alias, the function returns VARIABLE. | |
3898 | ||
3899 | It might be noteworthy that variables aliases work for all kinds of | |
3900 | variables, including buffer-local and frame-local variables. | |
3901 | ||
3902 | ** defcustom changes: | |
3903 | ||
3904 | *** The package-version keyword has been added to provide | |
3905 | `customize-changed-options' functionality to packages in the future. | |
3906 | Developers who make use of this keyword must also update the new | |
3907 | variable `customize-package-emacs-version-alist'. | |
3908 | ||
3909 | *** The new customization type `float' requires a floating point number. | |
3910 | ||
3911 | ** String changes: | |
3912 | ||
3913 | *** A hex escape in a string constant forces the string to be multibyte. | |
3914 | ||
3915 | *** An octal escape in a string constant forces the string to be unibyte. | |
3916 | ||
3917 | *** New function `string-to-multibyte' converts a unibyte string to a | |
3918 | multibyte string with the same individual character codes. | |
3919 | ||
3920 | *** `split-string' now includes null substrings in the returned list if | |
3921 | the optional argument SEPARATORS is non-nil and there are matches for | |
3922 | SEPARATORS at the beginning or end of the string. If SEPARATORS is | |
3923 | nil, or if the new optional third argument OMIT-NULLS is non-nil, all | |
3924 | empty matches are omitted from the returned list. | |
3925 | ||
3926 | *** The new function `assoc-string' replaces `assoc-ignore-case' and | |
3927 | `assoc-ignore-representation', which are still available, but have | |
3928 | been declared obsolete. | |
3929 | ||
3930 | *** New function `substring-no-properties' returns a substring without | |
3931 | text properties. | |
3932 | ||
3933 | ** Displaying warnings to the user. | |
3934 | ||
3935 | See the functions `warn' and `display-warning', or the Lisp Manual. | |
3936 | If you want to be sure the warning will not be overlooked, this | |
3937 | facility is much better than using `message', since it displays | |
3938 | warnings in a separate window. | |
3939 | ||
3940 | ** Progress reporters. | |
3941 | ||
3942 | These provide a simple and uniform way for commands to present | |
3943 | progress messages for the user. | |
3944 | ||
3945 | See the new functions `make-progress-reporter', | |
3946 | `progress-reporter-update', `progress-reporter-force-update', | |
3947 | `progress-reporter-done', and `dotimes-with-progress-reporter'. | |
3948 | ||
3949 | ** Buffer positions: | |
3950 | ||
3951 | *** Function `compute-motion' now calculates the usable window | |
3952 | width if the WIDTH argument is nil. If the TOPOS argument is nil, | |
3953 | the usable window height and width is used. | |
3954 | ||
3955 | *** The `line-move', `scroll-up', and `scroll-down' functions will now | |
3956 | modify the window vscroll to scroll through display rows that are | |
3957 | taller that the height of the window, for example in the presence of | |
3958 | large images. To disable this feature, bind the new variable | |
3959 | `auto-window-vscroll' to nil. | |
3960 | ||
3961 | *** The argument to `forward-word', `backward-word' is optional. | |
3962 | ||
3963 | It defaults to 1. | |
3964 | ||
3965 | *** Argument to `forward-to-indentation' and `backward-to-indentation' is optional. | |
3966 | ||
3967 | It defaults to 1. | |
3968 | ||
3969 | *** `field-beginning' and `field-end' take new optional argument, LIMIT. | |
3970 | ||
3971 | This argument tells them not to search beyond LIMIT. Instead they | |
3972 | give up and return LIMIT. | |
3973 | ||
3974 | *** New function `window-line-height' is an efficient way to get | |
3975 | information about a specific text line in a window provided that the | |
3976 | window's display is up-to-date. | |
3977 | ||
3978 | *** New function `line-number-at-pos' returns the line number of a position. | |
3979 | ||
3980 | It an optional buffer position argument that defaults to point. | |
3981 | ||
3982 | *** Function `pos-visible-in-window-p' now returns the pixel coordinates | |
3983 | and partial visibility state of the corresponding row, if the PARTIALLY | |
3984 | arg is non-nil. | |
3985 | ||
3986 | *** New functions `posn-at-point' and `posn-at-x-y' return | |
3987 | click-event-style position information for a given visible buffer | |
3988 | position or for a given window pixel coordinate. | |
3989 | ||
3990 | *** New function `mouse-on-link-p' tests if a position is in a clickable link. | |
3991 | ||
3992 | This is the function used by the new `mouse-1-click-follows-link' | |
3993 | functionality. | |
3994 | ||
3995 | ** Text modification: | |
3996 | ||
3997 | *** The new function `buffer-chars-modified-tick' returns a buffer's | |
3998 | tick counter for changes to characters. Each time text in that buffer | |
3999 | is inserted or deleted, the character-change counter is updated to the | |
4000 | tick counter (`buffer-modified-tick'). Text property changes leave it | |
4001 | unchanged. | |
4002 | ||
4003 | *** The new function `insert-for-yank' normally works like `insert', but | |
4004 | removes the text properties in the `yank-excluded-properties' list | |
4005 | and handles the `yank-handler' text property. | |
4006 | ||
4007 | *** The new function `insert-buffer-substring-as-yank' is like | |
4008 | `insert-for-yank' except that it gets the text from another buffer as | |
4009 | in `insert-buffer-substring'. | |
4010 | ||
4011 | *** The new function `insert-buffer-substring-no-properties' is like | |
4012 | `insert-buffer-substring', but removes all text properties from the | |
4013 | inserted substring. | |
4014 | ||
4015 | *** The new function `filter-buffer-substring' extracts a buffer | |
4016 | substring, passes it through a set of filter functions, and returns | |
4017 | the filtered substring. Use it instead of `buffer-substring' or | |
4018 | `delete-and-extract-region' when copying text into a user-accessible | |
4019 | data structure, such as the kill-ring, X clipboard, or a register. | |
4020 | ||
4021 | The list of filter function is specified by the new variable | |
4022 | `buffer-substring-filters'. For example, Longlines mode adds to | |
4023 | `buffer-substring-filters' to remove soft newlines from the copied | |
4024 | text. | |
4025 | ||
4026 | *** Function `translate-region' accepts also a char-table as TABLE | |
4027 | argument. | |
4028 | ||
4029 | *** The new translation table `translation-table-for-input' | |
4030 | is used for customizing self-insertion. The character to | |
4031 | be inserted is translated through it. | |
4032 | ||
4033 | *** Text clones. | |
4034 | ||
4035 | The new function `text-clone-create'. Text clones are chunks of text | |
4036 | that are kept identical by transparently propagating changes from one | |
4037 | clone to the other. | |
4038 | ||
4039 | *** The function `insert-string' is now obsolete. | |
4040 | ||
4041 | ** Filling changes. | |
4042 | ||
4043 | *** In determining an adaptive fill prefix, Emacs now tries the function in | |
4044 | `adaptive-fill-function' _before_ matching the buffer line against | |
4045 | `adaptive-fill-regexp' rather than _after_ it. | |
4046 | ||
4047 | ** Atomic change groups. | |
4048 | ||
4049 | To perform some changes in the current buffer "atomically" so that | |
4050 | they either all succeed or are all undone, use `atomic-change-group' | |
4051 | around the code that makes changes. For instance: | |
4052 | ||
4053 | (atomic-change-group | |
4054 | (insert foo) | |
4055 | (delete-region x y)) | |
4056 | ||
4057 | If an error (or other nonlocal exit) occurs inside the body of | |
4058 | `atomic-change-group', it unmakes all the changes in that buffer that | |
4059 | were during the execution of the body. The change group has no effect | |
4060 | on any other buffers--any such changes remain. | |
4061 | ||
4062 | If you need something more sophisticated, you can directly call the | |
4063 | lower-level functions that `atomic-change-group' uses. Here is how. | |
4064 | ||
4065 | To set up a change group for one buffer, call `prepare-change-group'. | |
4066 | Specify the buffer as argument; it defaults to the current buffer. | |
4067 | This function returns a "handle" for the change group. You must save | |
4068 | the handle to activate the change group and then finish it. | |
4069 | ||
4070 | Before you change the buffer again, you must activate the change | |
4071 | group. Pass the handle to `activate-change-group' afterward to | |
4072 | do this. | |
4073 | ||
4074 | After you make the changes, you must finish the change group. You can | |
4075 | either accept the changes or cancel them all. Call | |
4076 | `accept-change-group' to accept the changes in the group as final; | |
4077 | call `cancel-change-group' to undo them all. | |
4078 | ||
4079 | You should use `unwind-protect' to make sure the group is always | |
4080 | finished. The call to `activate-change-group' should be inside the | |
4081 | `unwind-protect', in case the user types C-g just after it runs. | |
4082 | (This is one reason why `prepare-change-group' and | |
4083 | `activate-change-group' are separate functions.) Once you finish the | |
4084 | group, don't use the handle again--don't try to finish the same group | |
4085 | twice. | |
4086 | ||
4087 | To make a multibuffer change group, call `prepare-change-group' once | |
4088 | for each buffer you want to cover, then use `nconc' to combine the | |
4089 | returned values, like this: | |
4090 | ||
4091 | (nconc (prepare-change-group buffer-1) | |
4092 | (prepare-change-group buffer-2)) | |
4093 | ||
4094 | You can then activate the multibuffer change group with a single call | |
4095 | to `activate-change-group', and finish it with a single call to | |
4096 | `accept-change-group' or `cancel-change-group'. | |
4097 | ||
4098 | Nested use of several change groups for the same buffer works as you | |
4099 | would expect. Non-nested use of change groups for the same buffer | |
4100 | will lead to undesirable results, so don't let it happen; the first | |
4101 | change group you start for any given buffer should be the last one | |
4102 | finished. | |
4103 | ||
4104 | ** Buffer-related changes: | |
4105 | ||
4106 | *** The new function `buffer-local-value' returns the buffer-local | |
4107 | binding of VARIABLE (a symbol) in buffer BUFFER. If VARIABLE does not | |
4108 | have a buffer-local binding in buffer BUFFER, it returns the default | |
4109 | value of VARIABLE instead. | |
4110 | ||
4111 | *** `list-buffers-noselect' now takes an additional argument, BUFFER-LIST. | |
4112 | ||
4113 | If it is non-nil, it specifies which buffers to list. | |
4114 | ||
4115 | *** `kill-buffer-hook' is now a permanent local. | |
4116 | ||
4117 | *** The function `frame-or-buffer-changed-p' now lets you maintain | |
4118 | various status records in parallel. | |
4119 | ||
4120 | It takes a variable (a symbol) as argument. If the variable is non-nil, | |
4121 | then its value should be a vector installed previously by | |
4122 | `frame-or-buffer-changed-p'. If the frame names, buffer names, buffer | |
4123 | order, or their read-only or modified flags have changed, since the | |
4124 | time the vector's contents were recorded by a previous call to | |
4125 | `frame-or-buffer-changed-p', then the function returns t. Otherwise | |
4126 | it returns nil. | |
4127 | ||
4128 | On the first call to `frame-or-buffer-changed-p', the variable's | |
4129 | value should be nil. `frame-or-buffer-changed-p' stores a suitable | |
4130 | vector into the variable and returns t. | |
4131 | ||
4132 | If the variable is itself nil, then `frame-or-buffer-changed-p' uses, | |
4133 | for compatibility, an internal variable which exists only for this | |
4134 | purpose. | |
4135 | ||
4136 | *** The function `read-buffer' follows the convention for reading from | |
4137 | the minibuffer with a default value: if DEF is non-nil, the minibuffer | |
4138 | prompt provided in PROMPT is edited to show the default value provided | |
4139 | in DEF before the terminal colon and space. | |
4140 | ||
4141 | ** Searching and matching changes: | |
4142 | ||
4143 | *** New function `looking-back' checks whether a regular expression matches | |
4144 | the text before point. Specifying the LIMIT argument bounds how far | |
4145 | back the match can start; this is a way to keep it from taking too long. | |
4146 | ||
4147 | *** The new variable `search-spaces-regexp' controls how to search | |
4148 | for spaces in a regular expression. If it is non-nil, it should be a | |
4149 | regular expression, and any series of spaces stands for that regular | |
4150 | expression. If it is nil, spaces stand for themselves. | |
4151 | ||
4152 | Spaces inside of constructs such as `[..]' and inside loops such as | |
4153 | `*', `+', and `?' are never replaced with `search-spaces-regexp'. | |
4154 | ||
4155 | *** New regular expression operators, `\_<' and `\_>'. | |
4156 | ||
4157 | These match the beginning and end of a symbol. A symbol is a | |
4158 | non-empty sequence of either word or symbol constituent characters, as | |
4159 | specified by the syntax table. | |
4160 | ||
4161 | *** `skip-chars-forward' and `skip-chars-backward' now handle | |
4162 | character classes such as `[:alpha:]', along with individual | |
4163 | characters and ranges. | |
4164 | ||
4165 | *** In `replace-match', the replacement text no longer inherits | |
4166 | properties from surrounding text. | |
4167 | ||
4168 | *** The list returned by `(match-data t)' now has the buffer as a final | |
4169 | element, if the last match was on a buffer. `set-match-data' | |
4170 | accepts such a list for restoring the match state. | |
4171 | ||
4172 | *** Functions `match-data' and `set-match-data' now have an optional | |
4173 | argument `reseat'. When non-nil, all markers in the match data list | |
4174 | passed to these functions will be reseated to point to nowhere. | |
4175 | ||
4176 | *** rx.el has new corresponding `symbol-start' and `symbol-end' elements. | |
4177 | ||
4178 | *** The default value of `sentence-end' is now defined using the new | |
4179 | variable `sentence-end-without-space', which contains such characters | |
4180 | that end a sentence without following spaces. | |
4181 | ||
4182 | The function `sentence-end' should be used to obtain the value of the | |
4183 | variable `sentence-end'. If the variable `sentence-end' is nil, then | |
4184 | this function returns the regexp constructed from the variables | |
4185 | `sentence-end-without-period', `sentence-end-double-space' and | |
4186 | `sentence-end-without-space'. | |
4187 | ||
4188 | ** Undo changes: | |
4189 | ||
4190 | *** `buffer-undo-list' allows programmable elements. | |
4191 | ||
4192 | These elements have the form (apply FUNNAME . ARGS), where FUNNAME is | |
4193 | a symbol other than t or nil. That stands for a high-level change | |
4194 | that should be undone by evaluating (apply FUNNAME ARGS). | |
4195 | ||
4196 | These entries can also have the form (apply DELTA BEG END FUNNAME . ARGS) | |
4197 | which indicates that the change which took place was limited to the | |
4198 | range BEG...END and increased the buffer size by DELTA. | |
4199 | ||
4200 | *** If the buffer's undo list for the current command gets longer than | |
4201 | `undo-outer-limit', garbage collection empties it. This is to prevent | |
4202 | it from using up the available memory and choking Emacs. | |
4203 | ||
4204 | ** Killing and yanking changes: | |
4205 | ||
4206 | *** New `yank-handler' text property can be used to control how | |
4207 | previously killed text on the kill ring is reinserted. | |
4208 | ||
4209 | The value of the `yank-handler' property must be a list with one to four | |
4210 | elements with the following format: | |
4211 | (FUNCTION PARAM NOEXCLUDE UNDO). | |
4212 | ||
4213 | The `insert-for-yank' function looks for a yank-handler property on | |
4214 | the first character on its string argument (typically the first | |
4215 | element on the kill-ring). If a `yank-handler' property is found, | |
4216 | the normal behavior of `insert-for-yank' is modified in various ways: | |
4217 | ||
4218 | When FUNCTION is present and non-nil, it is called instead of `insert' | |
4219 | to insert the string. FUNCTION takes one argument--the object to insert. | |
4220 | If PARAM is present and non-nil, it replaces STRING as the object | |
4221 | passed to FUNCTION (or `insert'); for example, if FUNCTION is | |
4222 | `yank-rectangle', PARAM should be a list of strings to insert as a | |
4223 | rectangle. | |
4224 | If NOEXCLUDE is present and non-nil, the normal removal of the | |
4225 | `yank-excluded-properties' is not performed; instead FUNCTION is | |
4226 | responsible for removing those properties. This may be necessary | |
4227 | if FUNCTION adjusts point before or after inserting the object. | |
4228 | If UNDO is present and non-nil, it is a function that will be called | |
4229 | by `yank-pop' to undo the insertion of the current object. It is | |
4230 | called with two arguments, the start and end of the current region. | |
4231 | FUNCTION can set `yank-undo-function' to override the UNDO value. | |
4232 | ||
4233 | *** The functions `kill-new', `kill-append', and `kill-region' now have an | |
4234 | optional argument to specify the `yank-handler' text property to put on | |
4235 | the killed text. | |
4236 | ||
4237 | *** The function `yank-pop' will now use a non-nil value of the variable | |
4238 | `yank-undo-function' (instead of `delete-region') to undo the previous | |
4239 | `yank' or `yank-pop' command (or a call to `insert-for-yank'). The function | |
4240 | `insert-for-yank' automatically sets that variable according to the UNDO | |
4241 | element of the string argument's `yank-handler' text property if present. | |
4242 | ||
4243 | *** The function `insert-for-yank' now supports strings where the | |
4244 | `yank-handler' property does not span the first character of the | |
4245 | string. The old behavior is available if you call | |
4246 | `insert-for-yank-1' instead. | |
4247 | ||
4248 | ** Syntax table changes: | |
4249 | ||
4250 | *** The new function `syntax-ppss' provides an efficient way to find the | |
4251 | current syntactic context at point. | |
4252 | ||
4253 | *** The new function `syntax-after' returns the syntax code | |
4254 | of the character after a specified buffer position, taking account | |
4255 | of text properties as well as the character code. | |
4256 | ||
4257 | *** `syntax-class' extracts the class of a syntax code (as returned | |
4258 | by `syntax-after'). | |
4259 | ||
4260 | *** The macro `with-syntax-table' no longer copies the syntax table. | |
4261 | ||
4262 | ** File operation changes: | |
4263 | ||
4264 | *** New vars `exec-suffixes' and `load-suffixes' used when | |
4265 | searching for an executable or an Emacs Lisp file. | |
4266 | ||
4267 | *** New function `locate-file' searches for a file in a list of directories. | |
4268 | `locate-file' accepts a name of a file to search (a string), and two | |
4269 | lists: a list of directories to search in and a list of suffixes to | |
4270 | try; typical usage might use `exec-path' and `load-path' for the list | |
4271 | of directories, and `exec-suffixes' and `load-suffixes' for the list | |
4272 | of suffixes. The function also accepts a predicate argument to | |
4273 | further filter candidate files. | |
4274 | ||
4275 | One advantage of using this function is that the list of suffixes in | |
bbd240ce | 4276 | `exec-suffixes' is OS-dependent, so this function will find |
782f8379 GM |
4277 | executables without polluting Lisp code with OS dependencies. |
4278 | ||
4279 | *** The new function `file-remote-p' tests a file name and returns | |
4280 | non-nil if it specifies a remote file (one that Emacs accesses using | |
4281 | its own special methods and not directly through the file system). | |
4282 | The value in that case is an identifier for the remote file system. | |
4283 | ||
4284 | *** The new hook `before-save-hook' is invoked by `basic-save-buffer' | |
4285 | before saving buffers. This allows packages to perform various final | |
4286 | tasks. For example, it can be used by the copyright package to make | |
4287 | sure saved files have the current year in any copyright headers. | |
4288 | ||
4289 | *** `file-chase-links' now takes an optional second argument LIMIT which | |
4290 | specifies the maximum number of links to chase through. If after that | |
4291 | many iterations the file name obtained is still a symbolic link, | |
4292 | `file-chase-links' returns it anyway. | |
4293 | ||
4294 | *** Functions `file-name-sans-extension' and `file-name-extension' now | |
4295 | ignore the leading dots in file names, so that file names such as | |
4296 | `.emacs' are treated as extensionless. | |
4297 | ||
4298 | *** If `buffer-save-without-query' is non-nil in some buffer, | |
4299 | `save-some-buffers' will always save that buffer without asking (if | |
4300 | it's modified). | |
4301 | ||
4302 | *** `buffer-auto-save-file-format' is the new name for what was | |
4303 | formerly called `auto-save-file-format'. It is now a permanent local. | |
4304 | ||
4305 | *** `visited-file-modtime' and `calendar-time-from-absolute' now return | |
4306 | a list of two integers, instead of a cons. | |
4307 | ||
4308 | *** The precedence of file name handlers has been changed. | |
4309 | ||
4310 | Instead of choosing the first handler that matches, | |
4311 | `find-file-name-handler' now gives precedence to a file name handler | |
4312 | that matches nearest the end of the file name. More precisely, the | |
4313 | handler whose (match-beginning 0) is the largest is chosen. In case | |
4314 | of ties, the old "first matched" rule applies. | |
4315 | ||
4316 | *** A file name handler can declare which operations it handles. | |
4317 | ||
4318 | You do this by putting an `operation' property on the handler name | |
4319 | symbol. The property value should be a list of the operations that | |
4320 | the handler really handles. It won't be called for any other | |
4321 | operations. | |
4322 | ||
4323 | This is useful for autoloaded handlers, to prevent them from being | |
4324 | autoloaded when not really necessary. | |
4325 | ||
4326 | *** The function `make-auto-save-file-name' is now handled by file | |
4327 | name handlers. This will be exploited for remote files mainly. | |
4328 | ||
4329 | *** The function `file-name-completion' accepts an optional argument | |
4330 | PREDICATE, and rejects completion candidates that don't satisfy PREDICATE. | |
4331 | ||
4332 | *** The new primitive `set-file-times' sets a file's access and | |
4333 | modification times. Magic file name handlers can handle this | |
4334 | operation. | |
4335 | ||
4336 | ** Input changes: | |
4337 | ||
4338 | *** Functions `y-or-n-p', `read-char', `read-key-sequence' and the like, that | |
4339 | display a prompt but don't use the minibuffer, now display the prompt | |
4340 | using the text properties (esp. the face) of the prompt string. | |
4341 | ||
4342 | *** The functions `read-event', `read-char', and `read-char-exclusive' | |
4343 | have a new optional argument SECONDS. If non-nil, this specifies a | |
4344 | maximum time to wait for input, in seconds. If no input arrives after | |
4345 | this time elapses, the functions stop waiting and return nil. | |
4346 | ||
4347 | *** An interactive specification can now use the code letter `U' to get | |
4348 | the up-event that was discarded in case the last key sequence read for a | |
4349 | previous `k' or `K' argument was a down-event; otherwise nil is used. | |
4350 | ||
4351 | *** The new interactive-specification `G' reads a file name | |
4352 | much like `F', but if the input is a directory name (even defaulted), | |
4353 | it returns just the directory name. | |
4354 | ||
4355 | *** (while-no-input BODY...) runs BODY, but only so long as no input | |
4356 | arrives. If the user types or clicks anything, BODY stops as if a | |
4357 | quit had occurred. `while-no-input' returns the value of BODY, if BODY | |
4358 | finishes. It returns nil if BODY was aborted by a quit, and t if | |
4359 | BODY was aborted by arrival of input. | |
4360 | ||
4361 | *** `recent-keys' now returns the last 300 keys. | |
4362 | ||
4363 | ** Minibuffer changes: | |
4364 | ||
4365 | *** The new function `minibufferp' returns non-nil if its optional | |
4366 | buffer argument is a minibuffer. If the argument is omitted, it | |
4367 | defaults to the current buffer. | |
4368 | ||
4369 | *** New function `minibuffer-selected-window' returns the window which | |
4370 | was selected when entering the minibuffer. | |
4371 | ||
4372 | *** The `read-file-name' function now takes an additional argument which | |
4373 | specifies a predicate which the file name read must satisfy. The | |
4374 | new variable `read-file-name-predicate' contains the predicate argument | |
4375 | while reading the file name from the minibuffer; the predicate in this | |
4376 | variable is used by read-file-name-internal to filter the completion list. | |
4377 | ||
4378 | *** The new variable `read-file-name-function' can be used by Lisp code | |
4379 | to override the built-in `read-file-name' function. | |
4380 | ||
4381 | *** The new variable `read-file-name-completion-ignore-case' specifies | |
4382 | whether completion ignores case when reading a file name with the | |
4383 | `read-file-name' function. | |
4384 | ||
4385 | *** The new function `read-directory-name' is for reading a directory name. | |
4386 | ||
4387 | It is like `read-file-name' except that the defaulting works better | |
4388 | for directories, and completion inside it shows only directories. | |
4389 | ||
4390 | *** The new variable `history-add-new-input' specifies whether to add new | |
4391 | elements in history. If set to nil, minibuffer reading functions don't | |
4392 | add new elements to the history list, so it is possible to do this | |
4393 | afterwards by calling `add-to-history' explicitly. | |
4394 | ||
4395 | ** Completion changes: | |
4396 | ||
4397 | *** The new function `minibuffer-completion-contents' returns the contents | |
4398 | of the minibuffer just before point. That is what completion commands | |
4399 | operate on. | |
4400 | ||
4401 | *** The functions `all-completions' and `try-completion' now accept lists | |
4402 | of strings as well as hash-tables additionally to alists, obarrays | |
4403 | and functions. Furthermore, the function `test-completion' is now | |
4404 | exported to Lisp. The keys in alists and hash tables can be either | |
4405 | strings or symbols, which are automatically converted with to strings. | |
4406 | ||
4407 | *** The new macro `dynamic-completion-table' supports using functions | |
4408 | as a dynamic completion table. | |
4409 | ||
4410 | (dynamic-completion-table FUN) | |
4411 | ||
4412 | FUN is called with one argument, the string for which completion is required, | |
4413 | and it should return an alist containing all the intended possible | |
4414 | completions. This alist can be a full list of possible completions so that FUN | |
4415 | can ignore the value of its argument. If completion is performed in the | |
4416 | minibuffer, FUN will be called in the buffer from which the minibuffer was | |
4417 | entered. `dynamic-completion-table' then computes the completion. | |
4418 | ||
4419 | *** The new macro `lazy-completion-table' initializes a variable | |
4420 | as a lazy completion table. | |
4421 | ||
4422 | (lazy-completion-table VAR FUN) | |
4423 | ||
4424 | If the completion table VAR is used for the first time (e.g., by passing VAR | |
4425 | as an argument to `try-completion'), the function FUN is called with no | |
4426 | arguments. FUN must return the completion table that will be stored in VAR. | |
4427 | If completion is requested in the minibuffer, FUN will be called in the buffer | |
4428 | from which the minibuffer was entered. The return value of | |
4429 | `lazy-completion-table' must be used to initialize the value of VAR. | |
4430 | ||
4431 | ** Abbrev changes: | |
4432 | ||
4433 | *** `define-abbrev' now accepts an optional argument SYSTEM-FLAG. | |
4434 | ||
4435 | If non-nil, this marks the abbrev as a "system" abbrev, which means | |
4436 | that it won't be stored in the user's abbrevs file if he saves the | |
4437 | abbrevs. Major modes that predefine some abbrevs should always | |
4438 | specify this flag. | |
4439 | ||
4440 | *** The new function `copy-abbrev-table' copies an abbrev table. | |
4441 | ||
4442 | It returns a new abbrev table that is a copy of a given abbrev table. | |
4443 | ||
4444 | ** Enhancements to keymaps. | |
4445 | ||
4446 | *** Cleaner way to enter key sequences. | |
4447 | ||
4448 | You can enter a constant key sequence in a more natural format, the | |
4449 | same one used for saving keyboard macros, using the macro `kbd'. For | |
4450 | example, | |
4451 | ||
4452 | (kbd "C-x C-f") => "\^x\^f" | |
4453 | ||
4454 | Actually, this format has existed since Emacs 20.1. | |
4455 | ||
4456 | *** Interactive commands can be remapped through keymaps. | |
4457 | ||
4458 | This is an alternative to using `defadvice' or `substitute-key-definition' | |
4459 | to modify the behavior of a key binding using the normal keymap | |
4460 | binding and lookup functionality. | |
4461 | ||
4462 | When a key sequence is bound to a command, and that command is | |
4463 | remapped to another command, that command is run instead of the | |
4464 | original command. | |
4465 | ||
4466 | Example: | |
4467 | Suppose that minor mode `my-mode' has defined the commands | |
4468 | `my-kill-line' and `my-kill-word', and it wants C-k (and any other key | |
4469 | bound to `kill-line') to run the command `my-kill-line' instead of | |
4470 | `kill-line', and likewise it wants to run `my-kill-word' instead of | |
4471 | `kill-word'. | |
4472 | ||
4473 | Instead of rebinding C-k and the other keys in the minor mode map, | |
4474 | command remapping allows you to directly map `kill-line' into | |
4475 | `my-kill-line' and `kill-word' into `my-kill-word' using `define-key': | |
4476 | ||
4477 | (define-key my-mode-map [remap kill-line] 'my-kill-line) | |
4478 | (define-key my-mode-map [remap kill-word] 'my-kill-word) | |
4479 | ||
4480 | When `my-mode' is enabled, its minor mode keymap is enabled too. So | |
4481 | when the user types C-k, that runs the command `my-kill-line'. | |
4482 | ||
4483 | Only one level of remapping is supported. In the above example, this | |
4484 | means that if `my-kill-line' is remapped to `other-kill', then C-k still | |
4485 | runs `my-kill-line'. | |
4486 | ||
4487 | The following changes have been made to provide command remapping: | |
4488 | ||
4489 | - Command remappings are defined using `define-key' with a prefix-key | |
4490 | `remap', i.e. `(define-key MAP [remap CMD] DEF)' remaps command CMD | |
4491 | to definition DEF in keymap MAP. The definition is not limited to | |
4492 | another command; it can be anything accepted for a normal binding. | |
4493 | ||
4494 | - The new function `command-remapping' returns the binding for a | |
4495 | remapped command in the current keymaps, or nil if not remapped. | |
4496 | ||
4497 | - `key-binding' now remaps interactive commands unless the optional | |
4498 | third argument NO-REMAP is non-nil. | |
4499 | ||
4500 | - `where-is-internal' now returns nil for a remapped command (e.g. | |
4501 | `kill-line', when `my-mode' is enabled), and the actual key binding for | |
4502 | the command it is remapped to (e.g. C-k for my-kill-line). | |
4503 | It also has a new optional fifth argument, NO-REMAP, which inhibits | |
4504 | remapping if non-nil (e.g. it returns "C-k" for `kill-line', and | |
4505 | "<kill-line>" for `my-kill-line'). | |
4506 | ||
4507 | - The new variable `this-original-command' contains the original | |
4508 | command before remapping. It is equal to `this-command' when the | |
4509 | command was not remapped. | |
4510 | ||
4511 | *** The definition of a key-binding passed to define-key can use XEmacs-style | |
4512 | key-sequences, such as [(control a)]. | |
4513 | ||
4514 | *** New keymaps for typing file names | |
4515 | ||
4516 | Two new keymaps, `minibuffer-local-filename-completion-map' and | |
4517 | `minibuffer-local-must-match-filename-map', apply whenever | |
4518 | Emacs reads a file name in the minibuffer. These key maps override | |
4519 | the usual binding of SPC to `minibuffer-complete-word' (so that file | |
4520 | names with embedded spaces could be typed without the need to quote | |
4521 | the spaces). | |
4522 | ||
4523 | *** New function `current-active-maps' returns a list of currently | |
4524 | active keymaps. | |
4525 | ||
4526 | *** New function `describe-buffer-bindings' inserts the list of all | |
4527 | defined keys and their definitions. | |
4528 | ||
4529 | *** New function `keymap-prompt' returns the prompt string of a keymap. | |
4530 | ||
4531 | *** If text has a `keymap' property, that keymap takes precedence | |
4532 | over minor mode keymaps. | |
4533 | ||
4534 | *** The `keymap' property now also works at the ends of overlays and | |
4535 | text properties, according to their stickiness. This also means that it | |
4536 | works with empty overlays. The same hold for the `local-map' property. | |
4537 | ||
4538 | *** `key-binding' will now look up mouse-specific bindings. The | |
4539 | keymaps consulted by `key-binding' will get adapted if the key | |
4540 | sequence is started with a mouse event. Instead of letting the click | |
4541 | position be determined from the key sequence itself, it is also | |
4542 | possible to specify it with an optional argument explicitly. | |
4543 | ||
4544 | *** `define-key-after' now accepts keys longer than 1. | |
4545 | ||
4546 | *** (map-keymap FUNCTION KEYMAP) applies the function to each binding | |
4547 | in the keymap. | |
4548 | ||
4549 | *** New variable `emulation-mode-map-alists'. | |
4550 | ||
4551 | Lisp packages using many minor mode keymaps can now maintain their own | |
4552 | keymap alist separate from `minor-mode-map-alist' by adding their | |
4553 | keymap alist to this list. | |
4554 | ||
4555 | *** Dense keymaps now handle inheritance correctly. | |
4556 | ||
4557 | Previously a dense keymap would hide all of the simple-char key | |
4558 | bindings of the parent keymap. | |
4559 | ||
4560 | ** Enhancements to process support | |
4561 | ||
4562 | *** Adaptive read buffering of subprocess output. | |
4563 | ||
4564 | On some systems, when Emacs reads the output from a subprocess, the | |
4565 | output data is read in very small blocks, potentially resulting in | |
4566 | very poor performance. This behavior can be remedied to some extent | |
4567 | by setting the new variable `process-adaptive-read-buffering' to a | |
4568 | non-nil value (the default), as it will automatically delay reading | |
4569 | from such processes, allowing them to produce more output before | |
4570 | Emacs tries to read it. | |
4571 | ||
4572 | *** Processes now have an associated property list where programs can | |
4573 | maintain process state and other per-process related information. | |
4574 | ||
4575 | Use the new functions `process-get' and `process-put' to access, add, | |
4576 | and modify elements on this property list. Use the new functions | |
4577 | `process-plist' and `set-process-plist' to access and replace the | |
4578 | entire property list of a process. | |
4579 | ||
4580 | *** Function `list-processes' now has an optional argument; if non-nil, | |
4581 | it lists only the processes whose query-on-exit flag is set. | |
4582 | ||
4583 | *** New fns `set-process-query-on-exit-flag' and `process-query-on-exit-flag'. | |
4584 | ||
4585 | These replace the old function `process-kill-without-query'. That | |
4586 | function is still supported, but new code should use the new | |
4587 | functions. | |
4588 | ||
4589 | *** The new function `call-process-shell-command'. | |
4590 | ||
4591 | This executes a shell command synchronously in a separate process. | |
4592 | ||
4593 | *** The new function `process-file' is similar to `call-process', but | |
4594 | obeys file handlers. The file handler is chosen based on | |
4595 | `default-directory'. | |
4596 | ||
4597 | *** Function `signal-process' now accepts a process object or process | |
4598 | name in addition to a process id to identify the signaled process. | |
4599 | ||
4600 | *** Function `accept-process-output' has a new optional fourth arg | |
4601 | JUST-THIS-ONE. If non-nil, only output from the specified process | |
4602 | is handled, suspending output from other processes. If value is an | |
4603 | integer, also inhibit running timers. This feature is generally not | |
4604 | recommended, but may be necessary for specific applications, such as | |
4605 | speech synthesis. | |
4606 | ||
4607 | *** A process filter function gets the output as multibyte string | |
4608 | if the process specifies t for its filter's multibyteness. | |
4609 | ||
4610 | That multibyteness is decided by the value of | |
4611 | `default-enable-multibyte-characters' when the process is created, and | |
4612 | you can change it later with `set-process-filter-multibyte'. | |
4613 | ||
4614 | *** The new function `set-process-filter-multibyte' sets the | |
4615 | multibyteness of the strings passed to the process's filter. | |
4616 | ||
4617 | *** The new function `process-filter-multibyte-p' returns the | |
4618 | multibyteness of the strings passed to the process's filter. | |
4619 | ||
4620 | *** If a process's coding system is `raw-text' or `no-conversion' and its | |
4621 | buffer is multibyte, the output of the process is at first converted | |
4622 | to multibyte by `string-to-multibyte' then inserted in the buffer. | |
4623 | Previously, it was converted to multibyte by `string-as-multibyte', | |
4624 | which was not compatible with the behavior of file reading. | |
4625 | ||
4626 | ** Enhanced networking support. | |
4627 | ||
4628 | *** The new `make-network-process' function makes network connections. | |
4629 | It allows opening of stream and datagram connections to a server, as well as | |
4630 | create a stream or datagram server inside Emacs. | |
4631 | ||
4632 | - A server is started using :server t arg. | |
4633 | - Datagram connection is selected using :type 'datagram arg. | |
4634 | - A server can open on a random port using :service t arg. | |
4635 | - Local sockets are supported using :family 'local arg. | |
4636 | - IPv6 is supported (when available). You may explicitly select IPv6 | |
4637 | using :family 'ipv6 arg. | |
4638 | - Non-blocking connect is supported using :nowait t arg. | |
4639 | - The process' property list can be initialized using :plist PLIST arg; | |
4640 | a copy of the server process' property list is automatically inherited | |
4641 | by new client processes created to handle incoming connections. | |
4642 | ||
4643 | To test for the availability of a given feature, use featurep like this: | |
4644 | (featurep 'make-network-process '(:type datagram)) | |
4645 | (featurep 'make-network-process '(:family ipv6)) | |
4646 | ||
4647 | *** The old `open-network-stream' now uses `make-network-process'. | |
4648 | ||
4649 | *** `process-contact' has an optional KEY argument. | |
4650 | ||
4651 | Depending on this argument, you can get the complete list of network | |
4652 | process properties or a specific property. Using :local or :remote as | |
4653 | the KEY, you get the address of the local or remote end-point. | |
4654 | ||
4655 | An Inet address is represented as a 5 element vector, where the first | |
4656 | 4 elements contain the IP address and the fifth is the port number. | |
4657 | ||
4658 | *** New functions `stop-process' and `continue-process'. | |
4659 | ||
4660 | These functions stop and restart communication through a network | |
4661 | connection. For a server process, no connections are accepted in the | |
4662 | stopped state. For a client process, no input is received in the | |
4663 | stopped state. | |
4664 | ||
4665 | *** New function `format-network-address'. | |
4666 | ||
4667 | This function reformats the Lisp representation of a network address | |
4668 | to a printable string. For example, an IP address A.B.C.D and port | |
4669 | number P is represented as a five element vector [A B C D P], and the | |
4670 | printable string returned for this vector is "A.B.C.D:P". See the doc | |
4671 | string for other formatting options. | |
4672 | ||
4673 | *** New function `network-interface-list'. | |
4674 | ||
4675 | This function returns a list of network interface names and their | |
4676 | current network addresses. | |
4677 | ||
4678 | *** New function `network-interface-info'. | |
4679 | ||
4680 | This function returns the network address, hardware address, current | |
4681 | status, and other information about a specific network interface. | |
4682 | ||
4683 | *** New functions `process-datagram-address', `set-process-datagram-address'. | |
4684 | ||
4685 | These functions are used with datagram-based network processes to get | |
4686 | and set the current address of the remote partner. | |
4687 | ||
4688 | *** Deleting a network process with `delete-process' calls the sentinel. | |
4689 | ||
4690 | The status message passed to the sentinel for a deleted network | |
4691 | process is "deleted". The message passed to the sentinel when the | |
4692 | connection is closed by the remote peer has been changed to | |
4693 | "connection broken by remote peer". | |
4694 | ||
4695 | ** Using window objects: | |
4696 | ||
4697 | *** You can now make a window as short as one line. | |
4698 | ||
4699 | A window that is just one line tall does not display either a mode | |
4700 | line or a header line, even if the variables `mode-line-format' and | |
4701 | `header-line-format' call for them. A window that is two lines tall | |
4702 | cannot display both a mode line and a header line at once; if the | |
4703 | variables call for both, only the mode line actually appears. | |
4704 | ||
4705 | *** The new function `window-inside-edges' returns the edges of the | |
4706 | actual text portion of the window, not including the scroll bar or | |
4707 | divider line, the fringes, the display margins, the header line and | |
4708 | the mode line. | |
4709 | ||
4710 | *** The new functions `window-pixel-edges' and `window-inside-pixel-edges' | |
4711 | return window edges in units of pixels, rather than columns and lines. | |
4712 | ||
4713 | *** New function `window-body-height'. | |
4714 | ||
4715 | This is like `window-height' but does not count the mode line or the | |
4716 | header line. | |
4717 | ||
4718 | *** The new function `adjust-window-trailing-edge' moves the right | |
4719 | or bottom edge of a window. It does not move other window edges. | |
4720 | ||
4721 | *** The new macro `with-selected-window' temporarily switches the | |
4722 | selected window without impacting the order of `buffer-list'. | |
4723 | It saves and restores the current buffer, too. | |
4724 | ||
4725 | *** `select-window' takes an optional second argument NORECORD. | |
4726 | ||
4727 | This is like `switch-to-buffer'. | |
4728 | ||
4729 | *** `save-selected-window' now saves and restores the selected window | |
4730 | of every frame. This way, it restores everything that can be changed | |
4731 | by calling `select-window'. It also saves and restores the current | |
4732 | buffer. | |
4733 | ||
4734 | *** `set-window-buffer' has an optional argument KEEP-MARGINS. | |
4735 | ||
4736 | If non-nil, that says to preserve the window's current margin, fringe, | |
4737 | and scroll-bar settings. | |
4738 | ||
4739 | *** The new function `window-tree' returns a frame's window tree. | |
4740 | ||
4741 | *** The functions `get-lru-window' and `get-largest-window' take an optional | |
4742 | argument `dedicated'. If non-nil, those functions do not ignore | |
4743 | dedicated windows. | |
4744 | ||
4745 | ** Customizable fringe bitmaps | |
4746 | ||
4747 | *** There are new display properties, `left-fringe' and `right-fringe', | |
4748 | that can be used to show a specific bitmap in the left or right fringe | |
4749 | bitmap of the display line. | |
4750 | ||
4751 | Format is `display (left-fringe BITMAP [FACE])', where BITMAP is a | |
4752 | symbol identifying a fringe bitmap, either built-in or defined with | |
4753 | `define-fringe-bitmap', and FACE is an optional face name to be used | |
4754 | for displaying the bitmap instead of the default `fringe' face. | |
4755 | When specified, FACE is automatically merged with the `fringe' face. | |
4756 | ||
4757 | *** New buffer-local variables `fringe-indicator-alist' and | |
4758 | `fringe-cursor-alist' maps between logical (internal) fringe indicator | |
4759 | and cursor symbols and the actual fringe bitmaps to be displayed. | |
4760 | This decouples the logical meaning of the fringe indicators from the | |
4761 | physical appearance, as well as allowing different fringe bitmaps to | |
4762 | be used in different windows showing different buffers. | |
4763 | ||
4764 | *** New function `define-fringe-bitmap' can now be used to create new | |
4765 | fringe bitmaps, as well as change the built-in fringe bitmaps. | |
4766 | ||
4767 | *** New function `destroy-fringe-bitmap' deletes a fringe bitmap | |
4768 | or restores a built-in one to its default value. | |
4769 | ||
4770 | *** New function `set-fringe-bitmap-face' specifies the face to be | |
4771 | used for a specific fringe bitmap. The face is automatically merged | |
4772 | with the `fringe' face, so normally, the face should only specify the | |
4773 | foreground color of the bitmap. | |
4774 | ||
4775 | *** New function `fringe-bitmaps-at-pos' returns the current fringe | |
4776 | bitmaps in the display line at a given buffer position. | |
4777 | ||
4778 | ** Other window fringe features: | |
4779 | ||
4780 | *** Controlling the default left and right fringe widths. | |
4781 | ||
4782 | The default left and right fringe widths for all windows of a frame | |
4783 | can now be controlled by setting the `left-fringe' and `right-fringe' | |
4784 | frame parameters to an integer value specifying the width in pixels. | |
4785 | Setting the width to 0 effectively removes the corresponding fringe. | |
4786 | ||
4787 | The actual default fringe widths for the frame may deviate from the | |
4788 | specified widths, since the combined fringe widths must match an | |
4789 | integral number of columns. The extra width is distributed evenly | |
4790 | between the left and right fringe. To force a specific fringe width, | |
4791 | specify the width as a negative integer (if both widths are negative, | |
4792 | only the left fringe gets the specified width). | |
4793 | ||
4794 | Setting the width to nil (the default), restores the default fringe | |
4795 | width which is the minimum number of pixels necessary to display any | |
4796 | of the currently defined fringe bitmaps. The width of the built-in | |
4797 | fringe bitmaps is 8 pixels. | |
4798 | ||
4799 | *** Per-window fringe and scrollbar settings | |
4800 | ||
4801 | **** Windows can now have their own individual fringe widths and | |
4802 | position settings. | |
4803 | ||
4804 | To control the fringe widths of a window, either set the buffer-local | |
4805 | variables `left-fringe-width', `right-fringe-width', or call | |
4806 | `set-window-fringes'. | |
4807 | ||
4808 | To control the fringe position in a window, that is, whether fringes | |
4809 | are positioned between the display margins and the window's text area, | |
4810 | or at the edges of the window, either set the buffer-local variable | |
4811 | `fringes-outside-margins' or call `set-window-fringes'. | |
4812 | ||
4813 | The function `window-fringes' can be used to obtain the current | |
4814 | settings. To make `left-fringe-width', `right-fringe-width', and | |
4815 | `fringes-outside-margins' take effect, you must set them before | |
4816 | displaying the buffer in a window, or use `set-window-buffer' to force | |
4817 | an update of the display margins. | |
4818 | ||
4819 | **** Windows can now have their own individual scroll-bar settings | |
4820 | controlling the width and position of scroll-bars. | |
4821 | ||
4822 | To control the scroll-bar of a window, either set the buffer-local | |
4823 | variables `scroll-bar-mode' and `scroll-bar-width', or call | |
4824 | `set-window-scroll-bars'. The function `window-scroll-bars' can be | |
4825 | used to obtain the current settings. To make `scroll-bar-mode' and | |
4826 | `scroll-bar-width' take effect, you must set them before displaying | |
4827 | the buffer in a window, or use `set-window-buffer' to force an update | |
4828 | of the display margins. | |
4829 | ||
4830 | ** Redisplay features: | |
4831 | ||
4832 | *** `sit-for' can now be called with args (SECONDS &optional NODISP). | |
4833 | ||
4834 | *** Iconifying or deiconifying a frame no longer makes sit-for return. | |
4835 | ||
4836 | *** New function `redisplay' causes an immediate redisplay if no input is | |
4837 | available, equivalent to (sit-for 0). The call (redisplay t) forces | |
4838 | an immediate redisplay even if input is pending. | |
4839 | ||
4840 | *** New function `force-window-update' can initiate a full redisplay of | |
4841 | one or all windows. Normally, this is not needed as changes in window | |
4842 | contents are detected automatically. However, certain implicit | |
4843 | changes to mode lines, header lines, or display properties may require | |
4844 | forcing an explicit window update. | |
4845 | ||
4846 | *** (char-displayable-p CHAR) returns non-nil if Emacs ought to be able | |
4847 | to display CHAR. More precisely, if the selected frame's fontset has | |
4848 | a font to display the character set that CHAR belongs to. | |
4849 | ||
4850 | Fontsets can specify a font on a per-character basis; when the fontset | |
4851 | does that, this value cannot be accurate. | |
4852 | ||
4853 | *** You can define multiple overlay arrows via the new | |
4854 | variable `overlay-arrow-variable-list'. | |
4855 | ||
4856 | It contains a list of variables which contain overlay arrow position | |
4857 | markers, including the original `overlay-arrow-position' variable. | |
4858 | ||
4859 | Each variable on this list can have individual `overlay-arrow-string' | |
4860 | and `overlay-arrow-bitmap' properties that specify an overlay arrow | |
4861 | string (for non-window terminals) or fringe bitmap (for window | |
4862 | systems) to display at the corresponding overlay arrow position. | |
4863 | If either property is not set, the default `overlay-arrow-string' or | |
4864 | 'overlay-arrow-fringe-bitmap' will be used. | |
4865 | ||
4866 | *** New `line-height' and `line-spacing' properties for newline characters | |
4867 | ||
4868 | A newline can now have `line-height' and `line-spacing' text or overlay | |
4869 | properties that control the height of the corresponding display row. | |
4870 | ||
4871 | If the `line-height' property value is t, the newline does not | |
4872 | contribute to the height of the display row; instead the height of the | |
4873 | newline glyph is reduced. Also, a `line-spacing' property on this | |
4874 | newline is ignored. This can be used to tile small images or image | |
4875 | slices without adding blank areas between the images. | |
4876 | ||
4877 | If the `line-height' property value is a positive integer, the value | |
4878 | specifies the minimum line height in pixels. If necessary, the line | |
4879 | height it increased by increasing the line's ascent. | |
4880 | ||
4881 | If the `line-height' property value is a float, the minimum line | |
4882 | height is calculated by multiplying the default frame line height by | |
4883 | the given value. | |
4884 | ||
4885 | If the `line-height' property value is a cons (FACE . RATIO), the | |
4886 | minimum line height is calculated as RATIO * height of named FACE. | |
4887 | RATIO is int or float. If FACE is t, it specifies the current face. | |
4888 | ||
4889 | If the `line-height' property value is a cons (nil . RATIO), the line | |
4890 | height is calculated as RATIO * actual height of the line's contents. | |
4891 | ||
4892 | If the `line-height' value is a cons (HEIGHT . TOTAL), HEIGHT specifies | |
4893 | the line height as described above, while TOTAL is any of the forms | |
4894 | described above and specifies the total height of the line, causing a | |
4895 | varying number of pixels to be inserted after the line to make it line | |
4896 | exactly that many pixels high. | |
4897 | ||
4898 | If the `line-spacing' property value is an positive integer, the value | |
4899 | is used as additional pixels to insert after the display line; this | |
4900 | overrides the default frame `line-spacing' and any buffer local value of | |
4901 | the `line-spacing' variable. | |
4902 | ||
4903 | If the `line-spacing' property is a float or cons, the line spacing | |
4904 | is calculated as specified above for the `line-height' property. | |
4905 | ||
4906 | *** The buffer local `line-spacing' variable can now have a float value, | |
4907 | which is used as a height relative to the default frame line height. | |
4908 | ||
4909 | *** Enhancements to stretch display properties | |
4910 | ||
4911 | The display property stretch specification form `(space PROPS)', where | |
4912 | PROPS is a property list, now allows pixel based width and height | |
4913 | specifications, as well as enhanced horizontal text alignment. | |
4914 | ||
4915 | The value of these properties can now be a (primitive) expression | |
4916 | which is evaluated during redisplay. The following expressions | |
4917 | are supported: | |
4918 | ||
4919 | EXPR ::= NUM | (NUM) | UNIT | ELEM | POS | IMAGE | FORM | |
4920 | NUM ::= INTEGER | FLOAT | SYMBOL | |
4921 | UNIT ::= in | mm | cm | width | height | |
4922 | ELEM ::= left-fringe | right-fringe | left-margin | right-margin | |
4923 | | scroll-bar | text | |
4924 | POS ::= left | center | right | |
4925 | FORM ::= (NUM . EXPR) | (OP EXPR ...) | |
4926 | OP ::= + | - | |
4927 | ||
4928 | The form `NUM' specifies a fractional width or height of the default | |
4929 | frame font size. The form `(NUM)' specifies an absolute number of | |
4930 | pixels. If a symbol is specified, its buffer-local variable binding | |
4931 | is used. The `in', `mm', and `cm' units specifies the number of | |
4932 | pixels per inch, milli-meter, and centi-meter, resp. The `width' and | |
4933 | `height' units correspond to the width and height of the current face | |
4934 | font. An image specification corresponds to the width or height of | |
4935 | the image. | |
4936 | ||
4937 | The `left-fringe', `right-fringe', `left-margin', `right-margin', | |
4938 | `scroll-bar', and `text' elements specify to the width of the | |
4939 | corresponding area of the window. | |
4940 | ||
4941 | The `left', `center', and `right' positions can be used with :align-to | |
4942 | to specify a position relative to the left edge, center, or right edge | |
4943 | of the text area. One of the above window elements (except `text') | |
4944 | can also be used with :align-to to specify that the position is | |
4945 | relative to the left edge of the given area. Once the base offset for | |
4946 | a relative position has been set (by the first occurrence of one of | |
4947 | these symbols), further occurrences of these symbols are interpreted as | |
4948 | the width of the area. | |
4949 | ||
4950 | For example, to align to the center of the left-margin, use | |
4951 | :align-to (+ left-margin (0.5 . left-margin)) | |
4952 | ||
4953 | If no specific base offset is set for alignment, it is always relative | |
4954 | to the left edge of the text area. For example, :align-to 0 in a | |
4955 | header line aligns with the first text column in the text area. | |
4956 | ||
4957 | The value of the form `(NUM . EXPR)' is the value of NUM multiplied by | |
4958 | the value of the expression EXPR. For example, (2 . in) specifies a | |
4959 | width of 2 inches, while (0.5 . IMAGE) specifies half the width (or | |
4960 | height) of the specified image. | |
4961 | ||
4962 | The form `(+ EXPR ...)' adds up the value of the expressions. | |
4963 | The form `(- EXPR ...)' negates or subtracts the value of the expressions. | |
4964 | ||
4965 | *** Normally, the cursor is displayed at the end of any overlay and | |
4966 | text property string that may be present at the current window | |
4967 | position. The cursor can now be placed on any character of such | |
4968 | strings by giving that character a non-nil `cursor' text property. | |
4969 | ||
4970 | *** The display space :width and :align-to text properties are now | |
4971 | supported on text terminals. | |
4972 | ||
4973 | *** Support for displaying image slices | |
4974 | ||
4975 | **** New display property (slice X Y WIDTH HEIGHT) can be used with | |
4976 | an image property to display only a specific slice of the image. | |
4977 | ||
4978 | **** Function `insert-image' has new optional fourth arg to | |
4979 | specify image slice (X Y WIDTH HEIGHT). | |
4980 | ||
4981 | **** New function `insert-sliced-image' inserts a given image as a | |
4982 | specified number of evenly sized slices (rows x columns). | |
4983 | ||
4984 | *** Images can now have an associated image map via the :map property. | |
4985 | ||
4986 | An image map is an alist where each element has the format (AREA ID PLIST). | |
4987 | An AREA is specified as either a rectangle, a circle, or a polygon: | |
4988 | A rectangle is a cons (rect . ((X0 . Y0) . (X1 . Y1))) specifying the | |
4989 | pixel coordinates of the upper left and bottom right corners. | |
4990 | A circle is a cons (circle . ((X0 . Y0) . R)) specifying the center | |
4991 | and the radius of the circle; R can be a float or integer. | |
4992 | A polygon is a cons (poly . [X0 Y0 X1 Y1 ...]) where each pair in the | |
4993 | vector describes one corner in the polygon. | |
4994 | ||
4995 | When the mouse pointer is above a hot-spot area of an image, the | |
4996 | PLIST of that hot-spot is consulted; if it contains a `help-echo' | |
4997 | property it defines a tool-tip for the hot-spot, and if it contains | |
4998 | a `pointer' property, it defines the shape of the mouse cursor when | |
4999 | it is over the hot-spot. See the variable `void-area-text-pointer' | |
5000 | for possible pointer shapes. | |
5001 | ||
5002 | When you click the mouse when the mouse pointer is over a hot-spot, | |
5003 | an event is composed by combining the ID of the hot-spot with the | |
5004 | mouse event, e.g. [area4 mouse-1] if the hot-spot's ID is `area4'. | |
5005 | ||
5006 | *** The function `find-image' now searches in etc/images/ and etc/. | |
5007 | The new variable `image-load-path' is a list of locations in which to | |
5008 | search for image files. The default is to search in etc/images, then | |
5009 | in etc/, and finally in the directories specified by `load-path'. | |
5010 | Subdirectories of etc/ and etc/images are not recursively searched; if | |
5011 | you put an image file in a subdirectory, you have to specify it | |
5012 | explicitly; for example, if an image is put in etc/images/foo/bar.xpm: | |
5013 | ||
5014 | (defimage foo-image '((:type xpm :file "foo/bar.xpm"))) | |
5015 | ||
5016 | Note that all images formerly located in the lisp directory have been | |
5017 | moved to etc/images. | |
5018 | ||
5019 | *** New function `image-load-path-for-library' returns a suitable | |
5020 | search path for images relative to library. This function is useful in | |
5021 | external packages to save users from having to update | |
5022 | `image-load-path'. | |
5023 | ||
5024 | *** The new variable `max-image-size' defines the maximum size of | |
5025 | images that Emacs will load and display. | |
5026 | ||
5027 | *** The new variable `display-mm-dimensions-alist' can be used to | |
5028 | override incorrect graphical display dimensions returned by functions | |
5029 | `display-mm-height' and `display-mm-width'. | |
5030 | ||
5031 | ** Mouse pointer features: | |
5032 | ||
5033 | *** The mouse pointer shape in void text areas (i.e. after the end of a | |
5034 | line or below the last line in the buffer) of the text window is now | |
5035 | controlled by the new variable `void-text-area-pointer'. The default | |
5036 | is to use the `arrow' (non-text) pointer. Other choices are `text' | |
5037 | (or nil), `hand', `vdrag', `hdrag', `modeline', and `hourglass'. | |
5038 | ||
5039 | *** The mouse pointer shape over an image can now be controlled by the | |
5040 | :pointer image property. | |
5041 | ||
5042 | *** The mouse pointer shape over ordinary text or images can now be | |
5043 | controlled/overridden via the `pointer' text property. | |
5044 | ||
5045 | ** Mouse event enhancements: | |
5046 | ||
5047 | *** All mouse events now include a buffer position regardless of where | |
5048 | you clicked. For mouse clicks in window margins and fringes, this is | |
5049 | a sensible buffer position corresponding to the surrounding text. | |
5050 | ||
5051 | *** Mouse events for clicks on window fringes now specify `left-fringe' | |
5052 | or `right-fringe' as the area. | |
5053 | ||
5054 | *** Mouse events include actual glyph column and row for all event types | |
5055 | and all areas. | |
5056 | ||
5057 | *** Mouse events can now indicate an image object clicked on. | |
5058 | ||
5059 | *** Mouse events include relative X and Y pixel coordinates relative to | |
5060 | the top left corner of the object (image or character) clicked on. | |
5061 | ||
5062 | *** Mouse events include the pixel width and height of the object | |
5063 | (image or character) clicked on. | |
5064 | ||
5065 | *** Function `mouse-set-point' now works for events outside text area. | |
5066 | ||
5067 | *** `posn-point' now returns buffer position for non-text area events. | |
5068 | ||
5069 | *** New function `posn-area' returns window area clicked on (nil means | |
5070 | text area). | |
5071 | ||
5072 | *** New function `posn-actual-col-row' returns the actual glyph coordinates | |
5073 | of the mouse event position. | |
5074 | ||
5075 | *** New functions 'posn-object', 'posn-object-x-y', 'posn-object-width-height'. | |
5076 | ||
5077 | These return the image or string object of a mouse click, the X and Y | |
5078 | pixel coordinates relative to the top left corner of that object, and | |
5079 | the total width and height of that object. | |
5080 | ||
5081 | ** Text property and overlay changes: | |
5082 | ||
5083 | *** Arguments for `remove-overlays' are now optional, so that you can | |
5084 | remove all overlays in the buffer with just (remove-overlays). | |
5085 | ||
5086 | *** New variable `char-property-alias-alist'. | |
5087 | ||
5088 | This variable allows you to create alternative names for text | |
5089 | properties. It works at the same level as `default-text-properties', | |
5090 | although it applies to overlays as well. This variable was introduced | |
5091 | to implement the `font-lock-face' property. | |
5092 | ||
5093 | *** New function `get-char-property-and-overlay' accepts the same | |
5094 | arguments as `get-char-property' and returns a cons whose car is the | |
5095 | return value of `get-char-property' called with those arguments and | |
5096 | whose cdr is the overlay in which the property was found, or nil if | |
5097 | it was found as a text property or not found at all. | |
5098 | ||
5099 | *** The new function `remove-list-of-text-properties'. | |
5100 | ||
5101 | It is like `remove-text-properties' except that it takes a list of | |
5102 | property names as argument rather than a property list. | |
5103 | ||
5104 | ** Face changes | |
5105 | ||
5106 | *** The variable `facemenu-unlisted-faces' has been removed. | |
5107 | Emacs has a lot more faces than in the past, and nearly all of them | |
5108 | needed to be excluded. The new variable `facemenu-listed-faces' lists | |
5109 | the faces to include in the face menu. | |
5110 | ||
5111 | *** The new face attribute condition `min-colors' can be used to tailor | |
5112 | the face color to the number of colors supported by a display, and | |
5113 | define the foreground and background colors accordingly so that they | |
5114 | look best on a terminal that supports at least this many colors. This | |
5115 | is now the preferred method for defining default faces in a way that | |
5116 | makes a good use of the capabilities of the display. | |
5117 | ||
5118 | *** New function `display-supports-face-attributes-p' can be used to test | |
5119 | whether a given set of face attributes is actually displayable. | |
5120 | ||
5121 | A new predicate `supports' has also been added to the `defface' face | |
5122 | specification language, which can be used to do this test for faces | |
5123 | defined with `defface'. | |
5124 | ||
5125 | *** The special treatment of faces whose names are of the form `fg:COLOR' | |
5126 | or `bg:COLOR' has been removed. Lisp programs should use the | |
5127 | `defface' facility for defining faces with specific colors, or use | |
5128 | the feature of specifying the face attributes :foreground and :background | |
5129 | directly in the `face' property instead of using a named face. | |
5130 | ||
5131 | *** The first face specification element in a defface can specify | |
5132 | `default' instead of frame classification. Then its attributes act as | |
5133 | defaults that apply to all the subsequent cases (and can be overridden | |
5134 | by them). | |
5135 | ||
5136 | *** The function `face-differs-from-default-p' now truly checks | |
5137 | whether the given face displays differently from the default face or | |
5138 | not (previously it did only a very cursory check). | |
5139 | ||
5140 | *** `face-attribute', `face-foreground', `face-background', `face-stipple'. | |
5141 | ||
5142 | These now accept a new optional argument, INHERIT, which controls how | |
5143 | face inheritance is used when determining the value of a face | |
5144 | attribute. | |
5145 | ||
5146 | *** New functions `face-attribute-relative-p' and `merge-face-attribute' | |
5147 | help with handling relative face attributes. | |
5148 | ||
5149 | *** The priority of faces in an :inherit attribute face list is reversed. | |
5150 | ||
5151 | If a face contains an :inherit attribute with a list of faces, earlier | |
5152 | faces in the list override later faces in the list; in previous | |
5153 | releases of Emacs, the order was the opposite. This change was made | |
5154 | so that :inherit face lists operate identically to face lists in text | |
5155 | `face' properties. | |
5156 | ||
5157 | *** The variable `face-font-rescale-alist' specifies how much larger | |
5158 | (or smaller) font we should use. For instance, if the value is | |
5159 | '((SOME-FONTNAME-PATTERN . 1.3)) and a face requests a font of 10 | |
5160 | point, we actually use a font of 13 point if the font matches | |
5161 | SOME-FONTNAME-PATTERN. | |
5162 | ||
5163 | *** On terminals, faces with the :inverse-video attribute are displayed | |
5164 | with swapped foreground and background colors even when one of them is | |
5165 | not specified. In previous releases of Emacs, if either foreground | |
5166 | or background color was unspecified, colors were not swapped. This | |
5167 | was inconsistent with the face behavior under X. | |
5168 | ||
5169 | *** `set-fontset-font', `fontset-info', `fontset-font' now operate on | |
5170 | the default fontset if the argument NAME is nil.. | |
5171 | ||
5172 | ** Font-Lock changes: | |
5173 | ||
5174 | *** New special text property `font-lock-face'. | |
5175 | ||
5176 | This property acts like the `face' property, but it is controlled by | |
5177 | M-x font-lock-mode. It is not, strictly speaking, a builtin text | |
5178 | property. Instead, it is implemented inside font-core.el, using the | |
5179 | new variable `char-property-alias-alist'. | |
5180 | ||
5181 | *** font-lock can manage arbitrary text-properties beside `face'. | |
5182 | ||
5183 | **** the FACENAME returned in `font-lock-keywords' can be a list of the | |
5184 | form (face FACE PROP1 VAL1 PROP2 VAL2 ...) so you can set other | |
5185 | properties than `face'. | |
5186 | ||
5187 | **** `font-lock-extra-managed-props' can be set to make sure those | |
5188 | extra properties are automatically cleaned up by font-lock. | |
5189 | ||
5190 | *** jit-lock obeys a new text-property `jit-lock-defer-multiline'. | |
5191 | ||
5192 | If a piece of text with that property gets contextually refontified | |
5193 | (see `jit-lock-defer-contextually'), then all of that text will | |
5194 | be refontified. This is useful when the syntax of a textual element | |
5195 | depends on text several lines further down (and when `font-lock-multiline' | |
5196 | is not appropriate to solve that problem). For example in Perl: | |
5197 | ||
5198 | s{ | |
5199 | foo | |
5200 | }{ | |
5201 | bar | |
5202 | }e | |
5203 | ||
5204 | Adding/removing the last `e' changes the `bar' from being a piece of | |
5205 | text to being a piece of code, so you'd put a `jit-lock-defer-multiline' | |
5206 | property over the second half of the command to force (deferred) | |
5207 | refontification of `bar' whenever the `e' is added/removed. | |
5208 | ||
5209 | *** `font-lock-extend-region-functions' makes it possible to alter the way | |
5210 | the fontification region is chosen. This can be used to prevent rounding | |
5211 | up to whole lines, or to extend the region to include all related lines | |
5212 | of multiline constructs so that such constructs get properly recognized. | |
5213 | ||
5214 | ** Major mode mechanism changes: | |
5215 | ||
5216 | *** New variable `magic-mode-alist' determines major mode for a file by | |
5217 | looking at the file contents. It takes precedence over `auto-mode-alist'. | |
5218 | ||
5219 | *** New variable `magic-fallback-mode-alist' determines major mode for a file by | |
5220 | looking at the file contents. It is handled after `auto-mode-alist', | |
5221 | only if `auto-mode-alist' (and `magic-mode-alist') says nothing about the file. | |
5222 | ||
5223 | *** XML or SGML major mode is selected when file starts with an `<?xml' | |
5224 | or `<!DOCTYPE' declaration. | |
5225 | ||
5226 | *** An interpreter magic line (if present) takes precedence over the | |
5227 | file name when setting the major mode. | |
5228 | ||
5229 | *** If new variable `auto-mode-case-fold' is set to a non-nil value, | |
5230 | Emacs will perform a second case-insensitive search through | |
5231 | `auto-mode-alist' if the first case-sensitive search fails. This | |
5232 | means that a file FILE.TXT is opened in text-mode, and a file | |
5233 | PROG.HTML is opened in html-mode. Note however, that independent of | |
5234 | this setting, *.C files are usually recognized as C++ files. It also | |
5235 | has no effect on systems with case-insensitive file names. | |
5236 | ||
5237 | *** All major mode functions should now run the new normal hook | |
5238 | `after-change-major-mode-hook', at their very end, after the mode | |
5239 | hooks. `run-mode-hooks' does this automatically. | |
5240 | ||
5241 | *** Major modes can define `eldoc-documentation-function' | |
5242 | locally to provide Eldoc functionality by some method appropriate to | |
5243 | the language. | |
5244 | ||
5245 | *** Use the new function `run-mode-hooks' to run the major mode's mode hook. | |
5246 | ||
5247 | *** The new function `run-mode-hooks' and the new macro `delay-mode-hooks' | |
5248 | are used by `define-derived-mode' to make sure the mode hook for the | |
5249 | parent mode is run at the end of the child mode. | |
5250 | ||
5251 | *** `define-derived-mode' by default creates a new empty abbrev table. | |
5252 | It does not copy abbrevs from the parent mode's abbrev table. | |
5253 | ||
5254 | *** If a major mode function has a non-nil `no-clone-indirect' | |
5255 | property, `clone-indirect-buffer' signals an error if you use | |
5256 | it in that buffer. | |
5257 | ||
5258 | ** Minor mode changes: | |
5259 | ||
5260 | *** `define-minor-mode' now accepts arbitrary additional keyword arguments | |
5261 | and simply passes them to `defcustom', if applicable. | |
5262 | ||
5263 | *** `define-globalized-minor-mode'. | |
5264 | ||
5265 | This is a new name for what was formerly called | |
5266 | `easy-mmode-define-global-mode'. The old name remains as an alias. | |
5267 | ||
5268 | *** `minor-mode-list' now holds a list of minor mode commands. | |
5269 | ||
5270 | ** Command loop changes: | |
5271 | ||
5272 | *** The new function `called-interactively-p' does what many people | |
5273 | have mistakenly believed `interactive-p' to do: it returns t if the | |
5274 | calling function was called through `call-interactively'. | |
5275 | ||
5276 | Only use this when you cannot solve the problem by adding a new | |
5277 | INTERACTIVE argument to the command. | |
5278 | ||
5279 | *** The function `commandp' takes an additional optional argument. | |
5280 | ||
5281 | If it is non-nil, then `commandp' checks for a function that could be | |
5282 | called with `call-interactively', and does not return t for keyboard | |
5283 | macros. | |
5284 | ||
5285 | *** When a command returns, the command loop moves point out from | |
5286 | within invisible text, in the same way it moves out from within text | |
5287 | covered by an image or composition property. | |
5288 | ||
5289 | This makes it generally unnecessary to mark invisible text as intangible. | |
5290 | This is particularly good because the intangible property often has | |
5291 | unexpected side-effects since the property applies to everything | |
5292 | (including `goto-char', ...) whereas this new code is only run after | |
5293 | `post-command-hook' and thus does not care about intermediate states. | |
5294 | ||
5295 | *** If a command sets `transient-mark-mode' to `only', that | |
5296 | enables Transient Mark mode for the following command only. | |
5297 | During that following command, the value of `transient-mark-mode' | |
5298 | is `identity'. If it is still `identity' at the end of the command, | |
5299 | the next return to the command loop changes to nil. | |
5300 | ||
5301 | *** Both the variable and the function `disabled-command-hook' have | |
5302 | been renamed to `disabled-command-function'. The variable | |
5303 | `disabled-command-hook' has been kept as an obsolete alias. | |
5304 | ||
5305 | *** `emacsserver' now runs `pre-command-hook' and `post-command-hook' | |
5306 | when it receives a request from emacsclient. | |
5307 | ||
5308 | *** `current-idle-time' reports how long Emacs has been idle. | |
5309 | ||
5310 | ** Lisp file loading changes: | |
5311 | ||
5312 | *** `load-history' can now have elements of the form (t . FUNNAME), | |
5313 | which means FUNNAME was previously defined as an autoload (before the | |
5314 | current file redefined it). | |
5315 | ||
5316 | *** `load-history' now records (defun . FUNNAME) when a function is | |
5317 | defined. For a variable, it records just the variable name. | |
5318 | ||
5319 | *** The function `symbol-file' can now search specifically for function, | |
5320 | variable or face definitions. | |
5321 | ||
5322 | *** `provide' and `featurep' now accept an optional second argument | |
5323 | to test/provide subfeatures. Also `provide' now checks `after-load-alist' | |
5324 | and runs any code associated with the provided feature. | |
5325 | ||
5326 | *** The variable `recursive-load-depth-limit' has been deleted. | |
5327 | Emacs now signals an error if the same file is loaded with more | |
5328 | than 3 levels of nesting. | |
5329 | ||
5330 | ** Byte compiler changes: | |
5331 | ||
5332 | *** The byte compiler now displays the actual line and character | |
5333 | position of errors, where possible. Additionally, the form of its | |
5334 | warning and error messages have been brought into line with GNU standards | |
5335 | for these. As a result, you can use next-error and friends on the | |
5336 | compilation output buffer. | |
5337 | ||
5338 | *** The new macro `with-no-warnings' suppresses all compiler warnings | |
5339 | inside its body. In terms of execution, it is equivalent to `progn'. | |
5340 | ||
5341 | *** You can avoid warnings for possibly-undefined symbols with a | |
5342 | simple convention that the compiler understands. (This is mostly | |
5343 | useful in code meant to be portable to different Emacs versions.) | |
5344 | Write forms like the following, or code that macroexpands into such | |
5345 | forms: | |
5346 | ||
5347 | (if (fboundp 'foo) <then> <else>) | |
5348 | (if (boundp 'foo) <then> <else) | |
5349 | ||
5350 | In the first case, using `foo' as a function inside the <then> form | |
5351 | won't produce a warning if it's not defined as a function, and in the | |
5352 | second case, using `foo' as a variable won't produce a warning if it's | |
5353 | unbound. The test must be in exactly one of the above forms (after | |
5354 | macro expansion), but such tests can be nested. Note that `when' and | |
5355 | `unless' expand to `if', but `cond' doesn't. | |
5356 | ||
5357 | *** `(featurep 'xemacs)' is treated by the compiler as nil. This | |
5358 | helps to avoid noisy compiler warnings in code meant to run under both | |
5359 | Emacs and XEmacs and can sometimes make the result significantly more | |
5360 | efficient. Since byte code from recent versions of XEmacs won't | |
5361 | generally run in Emacs and vice versa, this optimization doesn't lose | |
5362 | you anything. | |
5363 | ||
5364 | *** The local variable `no-byte-compile' in Lisp files is now obeyed. | |
5365 | ||
5366 | *** When a Lisp file uses CL functions at run-time, compiling the file | |
5367 | now issues warnings about these calls, unless the file performs | |
5368 | (require 'cl) when loaded. | |
5369 | ||
5370 | ** Frame operations: | |
5371 | ||
5372 | *** New functions `frame-current-scroll-bars' and `window-current-scroll-bars'. | |
5373 | ||
5374 | These functions return the current locations of the vertical and | |
5375 | horizontal scroll bars in a frame or window. | |
5376 | ||
5377 | *** The new function `modify-all-frames-parameters' modifies parameters | |
5378 | for all (existing and future) frames. | |
5379 | ||
5380 | *** The new frame parameter `tty-color-mode' specifies the mode to use | |
5381 | for color support on character terminal frames. Its value can be a | |
5382 | number of colors to support, or a symbol. See the Emacs Lisp | |
5383 | Reference manual for more detailed documentation. | |
5384 | ||
5385 | *** When using non-toolkit scroll bars with the default width, | |
5386 | the `scroll-bar-width' frame parameter value is nil. | |
5387 | ||
5388 | ** Mode line changes: | |
5389 | ||
5390 | *** New function `format-mode-line'. | |
5391 | ||
5392 | This returns the mode line or header line of the selected (or a | |
5393 | specified) window as a string with or without text properties. | |
5394 | ||
5395 | *** The new mode-line construct `(:propertize ELT PROPS...)' can be | |
5396 | used to add text properties to mode-line elements. | |
5397 | ||
5398 | *** The new `%i' and `%I' constructs for `mode-line-format' can be used | |
5399 | to display the size of the accessible part of the buffer on the mode | |
5400 | line. | |
5401 | ||
5402 | *** Mouse-face on mode-line (and header-line) is now supported. | |
5403 | ||
5404 | ** Menu manipulation changes: | |
5405 | ||
5406 | *** To manipulate the File menu using easy-menu, you must specify the | |
5407 | proper name "file". In previous Emacs versions, you had to specify | |
5408 | "files", even though the menu item itself was changed to say "File" | |
5409 | several versions ago. | |
5410 | ||
5411 | *** The dummy function keys made by easy-menu are now always lower case. | |
5412 | If you specify the menu item name "Ada", for instance, it uses `ada' | |
5413 | as the "key" bound by that key binding. | |
5414 | ||
5415 | This is relevant only if Lisp code looks for the bindings that were | |
5416 | made with easy-menu. | |
5417 | ||
5418 | *** `easy-menu-define' now allows you to use nil for the symbol name | |
5419 | if you don't need to give the menu a name. If you install the menu | |
5420 | into other keymaps right away (MAPS is non-nil), it usually doesn't | |
5421 | need to have a name. | |
5422 | ||
5423 | ** Mule changes: | |
5424 | ||
5425 | *** Already true in Emacs 21.1, but not emphasized clearly enough: | |
5426 | ||
5427 | Multibyte buffers can now faithfully record all 256 character codes | |
5428 | from 0 to 255. As a result, most of the past reasons to use unibyte | |
5429 | buffers no longer exist. We only know of three reasons to use them | |
5430 | now: | |
5431 | ||
5432 | 1. If you prefer to use unibyte text all of the time. | |
5433 | ||
5434 | 2. For reading files into temporary buffers, when you want to avoid | |
5435 | the time it takes to convert the format. | |
5436 | ||
5437 | 3. For binary files where format conversion would be pointless and | |
5438 | wasteful. | |
5439 | ||
5440 | *** The new variable `auto-coding-functions' lets you specify functions | |
5441 | to examine a file being visited and deduce the proper coding system | |
5442 | for it. (If the coding system is detected incorrectly for a specific | |
5443 | file, you can put a `coding:' tags to override it.) | |
5444 | ||
5445 | *** The new variable `ascii-case-table' stores the case table for the | |
5446 | ascii character set. Language environments (such as Turkish) may | |
5447 | alter the case correspondences of ASCII characters. This variable | |
5448 | saves the original ASCII case table before any such changes. | |
5449 | ||
5450 | *** The new function `merge-coding-systems' fills in unspecified aspects | |
5451 | of one coding system from another coding system. | |
5452 | ||
5453 | *** New coding system property `mime-text-unsuitable' indicates that | |
5454 | the coding system's `mime-charset' is not suitable for MIME text | |
5455 | parts, e.g. utf-16. | |
5456 | ||
5457 | *** New function `decode-coding-inserted-region' decodes a region as if | |
5458 | it is read from a file without decoding. | |
5459 | ||
5460 | *** New CCL functions `lookup-character' and `lookup-integer' access | |
5461 | hash tables defined by the Lisp function `define-translation-hash-table'. | |
5462 | ||
5463 | *** New function `quail-find-key' returns a list of keys to type in the | |
5464 | current input method to input a character. | |
5465 | ||
5466 | *** `set-buffer-file-coding-system' now takes an additional argument, | |
5467 | NOMODIFY. If it is non-nil, it means don't mark the buffer modified. | |
5468 | ||
5469 | ** Operating system access: | |
5470 | ||
5471 | *** The new primitive `get-internal-run-time' returns the processor | |
5472 | run time used by Emacs since start-up. | |
5473 | ||
5474 | *** Functions `user-uid' and `user-real-uid' now return floats if the | |
5475 | user UID doesn't fit in a Lisp integer. Function `user-full-name' | |
5476 | accepts a float as UID parameter. | |
5477 | ||
5478 | *** New function `locale-info' accesses locale information. | |
5479 | ||
5480 | *** On MS Windows, locale-coding-system is used to interact with the OS. | |
5481 | The Windows specific variable w32-system-coding-system, which was | |
5482 | formerly used for that purpose is now an alias for locale-coding-system. | |
5483 | ||
5484 | *** New function `redirect-debugging-output' can be used to redirect | |
5485 | debugging output on the stderr file handle to a file. | |
5486 | ||
5487 | ** GC changes: | |
5488 | ||
5489 | *** New variable `gc-cons-percentage' automatically grows the GC cons threshold | |
5490 | as the heap size increases. | |
5491 | ||
5492 | *** New variables `gc-elapsed' and `gcs-done' provide extra information | |
5493 | on garbage collection. | |
5494 | ||
5495 | *** The normal hook `post-gc-hook' is run at the end of garbage collection. | |
5496 | ||
5497 | The hook is run with GC inhibited, so use it with care. | |
5498 | ||
5499 | ** Miscellaneous: | |
5500 | ||
5501 | *** A number of hooks have been renamed to better follow the conventions: | |
5502 | ||
5503 | `find-file-hooks' to `find-file-hook', | |
5504 | `find-file-not-found-hooks' to `find-file-not-found-functions', | |
5505 | `write-file-hooks' to `write-file-functions', | |
5506 | `write-contents-hooks' to `write-contents-functions', | |
5507 | `x-lost-selection-hooks' to `x-lost-selection-functions', | |
5508 | `x-sent-selection-hooks' to `x-sent-selection-functions', | |
5509 | `delete-frame-hook' to `delete-frame-functions'. | |
5510 | ||
5511 | In each case the old name remains as an alias for the moment. | |
5512 | ||
5513 | *** Variable `local-write-file-hooks' is marked obsolete. | |
5514 | ||
5515 | Use the LOCAL arg of `add-hook'. | |
5516 | ||
5517 | *** New function `x-send-client-message' sends a client message when | |
5518 | running under X. | |
5519 | \f | |
5520 | * New Packages for Lisp Programming in Emacs 22.1 | |
5521 | ||
5522 | ** The new library button.el implements simple and fast `clickable | |
5523 | buttons' in Emacs buffers. Buttons are much lighter-weight than the | |
5524 | `widgets' implemented by widget.el, and can be used by lisp code that | |
5525 | doesn't require the full power of widgets. Emacs uses buttons for | |
5526 | such things as help and apropos buffers. | |
5527 | ||
5528 | ** The new library tree-widget.el provides a widget to display a set | |
5529 | of hierarchical data as an outline. For example, the tree-widget is | |
5530 | well suited to display a hierarchy of directories and files. | |
5531 | ||
5532 | ** The new library bindat.el provides functions to unpack and pack | |
5533 | binary data structures, such as network packets, to and from Lisp | |
5534 | data structures. | |
5535 | ||
5536 | ** master-mode.el implements a minor mode for scrolling a slave | |
5537 | buffer without leaving your current buffer, the master buffer. | |
5538 | ||
5539 | It can be used by sql.el, for example: the SQL buffer is the master | |
5540 | and its SQLi buffer is the slave. This allows you to scroll the SQLi | |
5541 | buffer containing the output from the SQL buffer containing the | |
5542 | commands. | |
5543 | ||
5544 | This is how to use sql.el and master.el together: the variable | |
5545 | sql-buffer contains the slave buffer. It is a local variable in the | |
5546 | SQL buffer. | |
5547 | ||
5548 | (add-hook 'sql-mode-hook | |
5549 | (function (lambda () | |
5550 | (master-mode t) | |
5551 | (master-set-slave sql-buffer)))) | |
5552 | (add-hook 'sql-set-sqli-hook | |
5553 | (function (lambda () | |
5554 | (master-set-slave sql-buffer)))) | |
5555 | ||
5556 | ** The new library benchmark.el does timing measurements on Lisp code. | |
5557 | ||
5558 | This includes measuring garbage collection time. | |
5559 | ||
5560 | ** The new library testcover.el does test coverage checking. | |
5561 | ||
5562 | This is so you can tell whether you've tested all paths in your Lisp | |
5563 | code. It works with edebug. | |
5564 | ||
5565 | The function `testcover-start' instruments all functions in a given | |
5566 | file. Then test your code. The function `testcover-mark-all' adds | |
5567 | overlay "splotches" to the Lisp file's buffer to show where coverage | |
5568 | is lacking. The command `testcover-next-mark' (bind it to a key!) | |
5569 | will move point forward to the next spot that has a splotch. | |
5570 | ||
5571 | Normally, a red splotch indicates the form was never completely | |
5572 | evaluated; a brown splotch means it always evaluated to the same | |
5573 | value. The red splotches are skipped for forms that can't possibly | |
5574 | complete their evaluation, such as `error'. The brown splotches are | |
5575 | skipped for forms that are expected to always evaluate to the same | |
5576 | value, such as (setq x 14). | |
5577 | ||
5578 | For difficult cases, you can add do-nothing macros to your code to | |
5579 | help out the test coverage tool. The macro `noreturn' suppresses a | |
5580 | red splotch. It is an error if the argument to `noreturn' does | |
5581 | return. The macro `1value' suppresses a brown splotch for its argument. | |
5582 | This macro is a no-op except during test-coverage -- then it signals | |
5583 | an error if the argument actually returns differing values. | |
5584 | ||
5585 | ||
5586 | \f | |
5587 | ---------------------------------------------------------------------- | |
5588 | This file is part of GNU Emacs. | |
5589 | ||
ab73e885 | 5590 | GNU Emacs is free software: you can redistribute it and/or modify |
782f8379 | 5591 | it under the terms of the GNU General Public License as published by |
ab73e885 GM |
5592 | the Free Software Foundation, either version 3 of the License, or |
5593 | (at your option) any later version. | |
782f8379 GM |
5594 | |
5595 | GNU Emacs is distributed in the hope that it will be useful, | |
5596 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
5597 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
5598 | GNU General Public License for more details. | |
5599 | ||
5600 | You should have received a copy of the GNU General Public License | |
ab73e885 | 5601 | along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. |
782f8379 GM |
5602 | |
5603 | \f | |
5604 | Local variables: | |
5605 | mode: outline | |
5606 | paragraph-separate: "[ \f]*$" | |
5607 | end: |