NEWS 358 KB
Newer Older
Dave Love's avatar
Dave Love committed
1
GNU Emacs NEWS -- history of user-visible changes.  2000-10-12
Dave Love's avatar
Dave Love committed
2
Copyright (C) 1999, 2000 Free Software Foundation, Inc.
Dave Love's avatar
#  
Dave Love committed
3 4 5
See the end for copying conditions.

Please send Emacs bug reports to bug-gnu-emacs@gnu.org.
Gerd Moellmann's avatar
Gerd Moellmann committed
6
For older news, see the file ONEWS
Dave Love's avatar
#  
Dave Love committed
7

Dave Love's avatar
Dave Love committed
8 9 10

* Installation Changes in Emacs 21.1

Gerd Moellmann's avatar
Gerd Moellmann committed
11 12
** Support for GNU/Linux on IA64 machines has been added.

Dave Love's avatar
Dave Love committed
13 14
** Support for LynxOS has been added.

Gerd Moellmann's avatar
Gerd Moellmann committed
15 16 17 18
** `movemail' defaults to supporting POP.  You can turn this off using
the --without-pop configure option, should that be necessary.

** There are new configure options associated with the support for
19 20
images and toolkit scrollbars.  Use the --help option in `configure'
to list them.
Gerd Moellmann's avatar
Gerd Moellmann committed
21

Gerd Moellmann's avatar
Gerd Moellmann committed
22
** There is a new configure option `--without-xim' that instructs
Gerd Moellmann's avatar
Gerd Moellmann committed
23
Emacs to not use X Input Methods (XIM), if these are available.
24 25 26 27 28

** There is a new configure option `--disable-largefile' to omit
Unix-98-style support for large files if that is available.

** You can build a 64-bit Emacs for SPARC/Solaris systems which
Dave Love's avatar
Dave Love committed
29
support 64-bit executables and also on Irix 6.5.  This increases the
Dave Love's avatar
Dave Love committed
30 31 32
maximum buffer size.  See etc/MACHINES for instructions.  Changes to
build on other 64-bit systems should be straightforward modulo any
necessary changes to unexec.
Gerd Moellmann's avatar
Gerd Moellmann committed
33

Dave Love's avatar
Dave Love committed
34 35 36
** Note that the MS-Windows port does not yet implement various of the
new display features described below.

37
** This version can be built for the Macintosh, but does not implement
Dave Love's avatar
Dave Love committed
38
all of the new display features described below.  The port currently
39
lacks unexec, asynchronous processes, and networking support.
Dave Love's avatar
Dave Love committed
40

Gerd Moellmann's avatar
Gerd Moellmann committed
41 42 43

* Changes in Emacs 21.1

44 45 46 47
** The new command M-x delete-trailing-whitespace RET will delete the
traling whitespace within the current restriction.  You can also add
this function to `write-file-hooks' or `local-write-file-hooks'.

Gerd Moellmann's avatar
Gerd Moellmann committed
48 49 50
** When visiting a file with M-x find-file-literally, no newlines will
be added to the end of the buffer because of `require-final-newline'.

51 52 53 54
** auto-compression mode is no longer enabled just by loading jka-compr.el.
To control it, set `auto-compression-mode' via Custom or use the
`auto-compression-mode' command.

Dave Love's avatar
Dave Love committed
55 56 57
** `browse-url-gnome-moz' is a new option for
`browse-url-browser-function', invoking Mozilla in GNOME.

58
+++
Gerd Moellmann's avatar
Gerd Moellmann committed
59 60 61
** The functions `keep-lines', `flush-lines' and `how-many' now
operate on the active region in Transient Mark mode.

62 63 64 65 66
** The header line in an Info buffer is now displayed as an emacs header-line
(which is like a mode-line, but at the top of the window), so that it
remains visible even when the buffer has been scrolled.  This behavior
may be disabled by customizing the option `Info-use-header-line'.

Dave Love's avatar
Dave Love committed
67
+++
Dave Love's avatar
Dave Love committed
68 69 70 71 72 73 74
** `gnus-user-agent' is a new possibility for `mail-user-agent'.  It
is like `message-user-agent', but with all the Gnus paraphernalia.

+++
** The recommended way of using Iswitchb is via the new global minor
mode `iswitchb-mode'.

Dave Love's avatar
Dave Love committed
75
+++
Dave Love's avatar
Gnus  
Dave Love committed
76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91
** Gnus changes.

The Gnus NEWS entries are short, but they reflect sweeping changes in
four areas: Article display treatment, MIME treatment,
internationalization and mail-fetching.

*** The mail-fetching functions have changed.  See the manual for the
many details.  In particular, all procmail fetching variables are gone.

If you used procmail like in

(setq nnmail-use-procmail t)
(setq nnmail-spool-file 'procmail)
(setq nnmail-procmail-directory "~/mail/incoming/")
(setq nnmail-procmail-suffix "\\.in")

Thien-Thi Nguyen's avatar
Thien-Thi Nguyen committed
92
this now has changed to
Dave Love's avatar
Gnus  
Dave Love committed
93 94 95 96 97 98 99 100 101 102

(setq mail-sources
      '((directory :path "~/mail/incoming/"
		   :suffix ".in")))

More information is available in the info doc at Select Methods ->
Getting Mail -> Mail Sources

*** Gnus is now a MIME-capable reader.  This affects many parts of
Gnus, and adds a slew of new commands.  See the manual for details.
Dave Love's avatar
md5.  
Dave Love committed
103 104
Separate MIME packages like RMIME, SEMI, mime-compose etc., will
probably no longer work; remove them and use the native facilities.
Dave Love's avatar
Gnus  
Dave Love committed
105

Dave Love's avatar
Dave Love committed
106
*** Gnus has also been multilingualized.  This also affects too many
Dave Love's avatar
md5.  
Dave Love committed
107 108 109
parts of Gnus to summarize here, and adds many new variables.  There
are built-in facilities equivalent to those of gnus-mule.el, which is
now just a compatibility layer.
Dave Love's avatar
Gnus  
Dave Love committed
110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128

*** gnus-auto-select-first can now be a function to be
called to position point.

*** The user can now decide which extra headers should be included in
summary buffers and NOV files.

*** `gnus-article-display-hook' has been removed.  Instead, a number
of variables starting with `gnus-treat-' have been added.

*** The Gnus posting styles have been redone again and now work in a
subtly different manner.

*** New web-based backends have been added: nnslashdot, nnwarchive
and nnultimate.  nnweb has been revamped, again, to keep up with
ever-changing layouts.

*** Gnus can now read IMAP mail via nnimap.

Dave Love's avatar
Dave Love committed
129
*** There is image support of various kinds and some sound support.
Dave Love's avatar
Gnus  
Dave Love committed
130 131

** When your terminal can't display characters from some of the ISO
Dave Love's avatar
Dave Love committed
132 133 134 135 136 137
8859 character sets but can display Latin-1, you can display
more-or-less mnemonic sequences of ASCII/Latin-1 characters instead of
empty boxes (under a window system) or question marks (not under a
window system).  Customize the option `latin1-display' to turn this
on.

Gerd Moellmann's avatar
Gerd Moellmann committed
138 139 140 141
** The new user-option `find-file-suppress-same-file-warnings' can be
set to suppress warnings ``X and Y are the same file'' when visiting a
file that is already visited under a different name.

Gerd Moellmann's avatar
Gerd Moellmann committed
142 143 144 145 146 147 148
** The new user-option `electric-help-shrink-window' can be set to
nil to prevent adjusting the help window size to the buffer size.

** Emacs now checks for recursive loads of Lisp files.  If the
recursion depth exceeds `recursive-load-depth-limit', an error is
signaled.

Gerd Moellmann's avatar
Gerd Moellmann committed
149
** The Strokes package has been updated.  If your Emacs has XPM
Dave Love's avatar
Dave Love committed
150 151 152 153 154 155
support, you can use it for pictographic editing.  In Strokes mode,
use C-mouse-2 to compose a complex stoke and insert it into the
buffer.  You can encode or decode a strokes buffer with new commands
M-x strokes-encode-buffer and M-x strokes-decode-buffer.  There is a
new command M-x strokes-list-strokes.

Kenichi Handa's avatar
Kenichi Handa committed
156
+++
Gerd Moellmann's avatar
Gerd Moellmann committed
157
** New command M-x describe-character-set reads a character set name
Eli Zaretskii's avatar
Eli Zaretskii committed
158
and displays information about that.
Kenichi Handa's avatar
Kenichi Handa committed
159

Gerd Moellmann's avatar
Gerd Moellmann committed
160
** When an error is signaled during the loading of the user's init
Gerd Moellmann's avatar
Gerd Moellmann committed
161 162
file, Emacs now pops up the *Messages* buffer.

Gerd Moellmann's avatar
Gerd Moellmann committed
163
** Polish and German translations of Emacs' reference card have been
Gerd Moellmann's avatar
Gerd Moellmann committed
164
added.  They are named `pl-refcard.tex' and `de-refcard.tex'.
Gerd Moellmann's avatar
Gerd Moellmann committed
165 166 167 168 169
Postscript files are included.

** A reference card for Dired has been added.  Its name is
`dired-ref.tex'.

Gerd Moellmann's avatar
Gerd Moellmann committed
170 171 172 173 174 175 176 177 178 179
** The new variable `auto-mode-interpreter-regexp' contains a regular
expression matching interpreters, for file mode determination.

This regular expression is matched against the first line of a file to
determine the file's mode in `set-auto-mode' when Emacs can't deduce a
mode from the file's name.  If it matches, the file is assumed to be
interpreted by the interpreter matched by the second group of the
regular expression.  The mode is then determined as the mode
associated with that interpreter in `interpreter-mode-alist'.

180
+++
181 182 183 184 185
** C-down-mouse-3 is bound differently.  Now if the menu bar is not
displayed it pops up a menu containing the items which would be on the
menu bar.  If the menu bar is displayed, it pops up the major mode
menu or the Edit menu if there is no major mode menu.

Dave Love's avatar
Dave Love committed
186 187 188
** Variable `load-path' is no longer customizable because it contains
a version-dependent component.

Gerd Moellmann's avatar
Gerd Moellmann committed
189 190 191 192 193
** The <delete> function key is now bound to `delete-char' by default.
Note that this takes effect only on window systems.  On TTYs, Emacs
will receive ASCII 127 when the DEL key is pressed.  This
character is still bound as before.

Dave Love's avatar
Dave Love committed
194 195 196
** Item Save Options on the Options menu allows saving options set
using that menu.

197
** New function executable-make-buffer-file-executable-if-script-p is
Dave Love's avatar
Dave Love committed
198
suitable as an after-save-hook as an alternative to `executable-chmod'.
199

200
+++
Dave Love's avatar
Dave Love committed
201 202 203 204 205 206 207 208
** The most preferred coding-system is now used to save a buffer if
buffer-file-coding-system is `undecided' and it is safe for the buffer
contents.  (The most preferred is set by set-language-environment or
by M-x prefer-coding-system.)  Thus if you visit an ASCII file and
insert a non-ASCII character from your current language environment,
the file will be saved silently with the appropriate coding.
Previously you would be prompted for a safe coding system.

209
+++
Gerd Moellmann's avatar
Gerd Moellmann committed
210 211 212 213 214
** New variable `inhibit-iso-escape-detection' determines if Emacs'
coding system detection algorithm should pay attention to ISO2022's
escape sequences.  If this variable is non-nil, the algorithm ignores
such escape sequences.  The default value is nil, and it is
recommended not to change it except for the special case that you
Kenichi Handa's avatar
Kenichi Handa committed
215
always want to read any escape code verbatim.  If you just want to
Gerd Moellmann's avatar
Gerd Moellmann committed
216
read a specific file without decoding escape codes, use C-x RET c
Kenichi Handa's avatar
Kenichi Handa committed
217 218
(`universal-coding-system-argument').  For instance, C-x RET c latin-1
RET C-x C-f filename RET.
Kenichi Handa's avatar
Kenichi Handa committed
219

Dave Love's avatar
Dave Love committed
220 221 222
** Variable `default-korean-keyboard' is initialized properly from the
environment variable `HANGUL_KEYBOARD_TYPE'.

Dave Love's avatar
Dave Love committed
223
+++
Dave Love's avatar
Dave Love committed
224 225 226
** C-u C-x = provides detailed information about the character at
point in a pop-up window.

227
+++
Dave Love's avatar
Dave Love committed
228 229 230 231 232 233
** New command M-x list-charset-chars reads a character set name and
displays all characters in that character set.

** M-x set-terminal-coding-system (C-x RET t) now allows CCL-based
coding systems such as cpXXX and cyrillic-koi8.

234
+++
235
** M-; now calls comment-dwim which tries to do something clever based
236
on the context.  M-x kill-comment is now an alias to comment-kill,
Stefan Monnier's avatar
Stefan Monnier committed
237 238
defined in newcomment.el.  You can choose different styles of region
commenting with the variable `comment-style'.
239

Dave Love's avatar
Dave Love committed
240
+++
Gerd Moellmann's avatar
Gerd Moellmann committed
241 242
** The function `getenv' is now callable interactively.

Dave Love's avatar
Dave Love committed
243 244 245
** The many obsolete language `setup-...-environment' commands have
been removed -- use `set-language-environment'.

Dave Love's avatar
Dave Love committed
246
+++
Dave Love's avatar
Dave Love committed
247 248 249 250 251
** New user options `display-time-mail-face' and
`display-time-use-mail-icon' control the appearance of mode-line mail
indicator used by the display-time package.  On a suitable display the
indicator can be an icon and is mouse-sensitive.

Dave Love's avatar
Dave Love committed
252
+++
Gerd Moellmann's avatar
Gerd Moellmann committed
253 254
** Emacs' auto-save list files are now by default stored in a
sub-directory `.emacs.d/auto-save-list/' of the user's home directory.
255
(On MS-DOS, this subdirectory's name is `_emacs.d/auto-save.list/'.)
Gerd Moellmann's avatar
Gerd Moellmann committed
256 257
You can customize `auto-save-list-prefix' to change this location.

Dave Love's avatar
Dave Love committed
258
+++
Gerd Moellmann's avatar
Gerd Moellmann committed
259 260 261
** On window-systems, additional space can be put between text lines
on the display using several methods

Dave Love's avatar
Dave Love committed
262
+++
Gerd Moellmann's avatar
Gerd Moellmann committed
263 264 265 266
- By setting frame parameter `line-spacing' to PIXELS.  PIXELS must be
a positive integer, and specifies that PIXELS number of pixels should
be put below text lines on the affected frame or frames.

Dave Love's avatar
Dave Love committed
267
+++
Gerd Moellmann's avatar
Gerd Moellmann committed
268 269 270
- By setting X resource `lineSpacing', class `LineSpacing'.  This is
equivalent ot specifying the frame parameter.

Gerd Moellmann's avatar
Gerd Moellmann committed
271
- By specifying `--line-spacing=N' or `-lsp N' on the command line.
Gerd Moellmann's avatar
Gerd Moellmann committed
272 273 274 275

- By setting buffer-local variable `line-spacing'.  The meaning is
the same, but applies to the a particular buffer only.

Dave Love's avatar
Dave Love committed
276
+++
Dave Love's avatar
Dave Love committed
277
** The new command `clone-indirect-buffer' can be used to create
Gerd Moellmann's avatar
Gerd Moellmann committed
278
an indirect buffer that is a twin copy of the current buffer.  The
Dave Love's avatar
Dave Love committed
279
command `clone-indirect-buffer-other-window', bound to C-x 4 c,
Gerd Moellmann's avatar
Gerd Moellmann committed
280
does the same but displays the indirect buffer in another window.
Gerd Moellmann's avatar
Gerd Moellmann committed
281

Dave Love's avatar
Dave Love committed
282
+++
283
** New user options `backup-directory-alist' and
Dave Love's avatar
Dave Love committed
284 285
`make-backup-file-name-function' control the placement of backups,
typically in a single directory or in an invisible sub-directory.
286

Dave Love's avatar
Dave Love committed
287 288 289
** New commands iso-iso2sgml and iso-sgml2iso convert between Latin-1
characters and the corresponding SGML (HTML) entities.

290
+++
Gerd Moellmann's avatar
Gerd Moellmann committed
291 292 293 294 295 296 297 298
** Emacs now refuses to load compiled Lisp files which weren't
compiled with Emacs.  Set `load-dangerous-libraries' to t to change
this behavior.

The reason for this change is an incompatible change in XEmacs' byte
compiler.  Files compiled with XEmacs can contain byte codes that let
Emacs dump core.

Dave Love's avatar
Dave Love committed
299
+++
Gerd Moellmann's avatar
Gerd Moellmann committed
300
** New X resources recognized
Gerd Moellmann's avatar
Gerd Moellmann committed
301

Gerd Moellmann's avatar
Gerd Moellmann committed
302 303 304 305 306 307
*** The X resource `synchronous', class `Synchronous', specifies
whether Emacs should run in synchronous mode.  Synchronous mode
is useful for debugging X problems.

Example:

Gerd Moellmann's avatar
Gerd Moellmann committed
308
  emacs.synchronous: true
Gerd Moellmann's avatar
Gerd Moellmann committed
309

Gerd Moellmann's avatar
Gerd Moellmann committed
310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333
*** The X resource `visualClass, class `VisualClass', specifies the
visual Emacs should use.  The resource's value should be a string of
the form `CLASS-DEPTH', where CLASS is the name of the visual class,
and DEPTH is the requested color depth as a decimal number.  Valid
visual class names are

  TrueColor
  PseudoColor
  DirectColor
  StaticColor
  GrayScale
  StaticGray

Visual class names specified as X resource are case-insensitive, i.e.
`pseudocolor', `Pseudocolor' and `PseudoColor' all have the same
meaning.

The program `xdpyinfo' can be used to list the visual classes
supported on your display, and which depths they have.  If
`visualClass' is not specified, Emacs uses the display's default
visual.

Example:

Gerd Moellmann's avatar
Gerd Moellmann committed
334
  emacs.visualClass: TrueColor-8
Gerd Moellmann's avatar
Gerd Moellmann committed
335 336 337 338 339 340 341 342

*** The X resource `privateColormap', class `PrivateColormap',
specifies that Emacs should use a private colormap if it is using the
default visual, and that visual is of class PseudoColor.  Recognized
resource values are `true' or `on'.

Example:

Gerd Moellmann's avatar
Gerd Moellmann committed
343
  emacs.privateColormap: true
Gerd Moellmann's avatar
Gerd Moellmann committed
344

345 346 347 348
** The menu bar configuration has changed.  The new configuration is
more CUA-compliant.  The most significant change is that Options is
now a separate menu-bar item, with Mule and Customize as its submenus.

Gerd Moellmann's avatar
Gerd Moellmann committed
349
** User-option `show-cursor-in-non-selected-windows' controls how to
Gerd Moellmann's avatar
Gerd Moellmann committed
350
display the cursor in non-selected windows.  If nil, no cursor is
Gerd Moellmann's avatar
Gerd Moellmann committed
351 352
shown, if non-nil a hollow box cursor is shown.  This option can
be customized.
Gerd Moellmann's avatar
Gerd Moellmann committed
353

Dave Love's avatar
Dave Love committed
354
+++
Dave Love's avatar
Dave Love committed
355 356
** The variable `echo-keystrokes' may now have a floating point value.

Dave Love's avatar
Dave Love committed
357
+++
Gerd Moellmann's avatar
Gerd Moellmann committed
358 359 360
** C-x 5 1 runs the new command delete-other-frames which deletes
all frames except the selected one.

Dave Love's avatar
Dave Love committed
361 362 363
** If your init file is compiled (.emacs.elc), `user-init-file' is set
to the source name (.emacs.el), if that exists, after loading it.

Gerd Moellmann's avatar
Gerd Moellmann committed
364
** The help string specified for a menu-item whose definition contains
365 366 367 368
the property `:help HELP' is now displayed under X, on MS-Windows, and
MS-DOS, either in the echo area or with tooltips.  Many standard menus
displayed by Emacs now have help strings.

369
+++
370 371
** Highlighting of mouse-sensitive regions is now supported in the
MS-DOS version of Emacs.
Gerd Moellmann's avatar
Gerd Moellmann committed
372

373 374 375
** New user option `read-mail-command' specifies a command to use to
read mail from the menu etc.

376
+++
Gerd Moellmann's avatar
Gerd Moellmann committed
377 378 379
** Hexl contains a new command `hexl-insert-hex-string' which inserts
a string of hexadecimal numbers read from the mini-buffer.

Gerd Moellmann's avatar
Gerd Moellmann committed
380 381
** Changes in Texinfo mode.

Stefan Monnier's avatar
Stefan Monnier committed
382
*** A couple of new key bindings have been added for inserting Texinfo
Gerd Moellmann's avatar
Gerd Moellmann committed
383 384 385 386 387 388
macros

  Key binding	Macro
  -------------------------
  C-c C-c C-s	@strong
  C-c C-c C-e	@emph
Stefan Monnier's avatar
Stefan Monnier committed
389
  C-c C-c u	    @url
Gerd Moellmann's avatar
Gerd Moellmann committed
390
  C-c C-c q     @quotation
Stefan Monnier's avatar
Stefan Monnier committed
391 392 393 394 395
  C-c C-c m	    @email
  C-c C-o       @<block> ... @end <block>
  M-RET         @item

*** The " key now inserts either " or `` or '' depending on context.
Gerd Moellmann's avatar
Gerd Moellmann committed
396

397 398 399 400 401 402
** Changes in Outline mode.

There is now support for Imenu to index headings.  A new command
`outline-headers-as-kill' copies the visible headings in the region to
the kill ring, e.g. to produce a table of contents.

Thien-Thi Nguyen's avatar
Thien-Thi Nguyen committed
403
** Changes to Emacs Server
Gerd Moellmann's avatar
Gerd Moellmann committed
404

405 406
+++
*** The new option `server-kill-new-buffers' specifies what to do
Gerd Moellmann's avatar
Gerd Moellmann committed
407 408 409 410 411 412
with buffers when done with them.  If non-nil, the default, buffers
are killed, unless they were already present before visiting them with
Emacs Server.  If nil, `server-temp-file-regexp' specifies which
buffers to kill, as before.

Please note that only buffers are killed that still have a client,
413
i.e. buffers visited with `emacsclient --no-wait' are never killed in
Gerd Moellmann's avatar
Gerd Moellmann committed
414 415
this way.

Gerd Moellmann's avatar
Gerd Moellmann committed
416 417 418 419 420 421
** Changes to Show Paren mode.

*** Overlays used by Show Paren mode now use a priority property.
The new user option show-paren-priority specifies the priority to
use.  Default is 1000.

422
+++
Dave Love's avatar
Dave Love committed
423 424 425
** New command M-x check-parens can be used to find unbalanced paren
groups and strings in buffers in Lisp mode (or other modes).

Dave Love's avatar
Dave Love committed
426 427 428 429 430
+++
** You can now easily create new *Info* buffers using either
M-x clone-buffer, C-u m <entry> RET or C-u g <entry> RET.
M-x clone-buffer can also be used on *Help* and several other special
buffers.
Stefan Monnier's avatar
Stefan Monnier committed
431

Dave Love's avatar
Dave Love committed
432
+++
William M. Perry's avatar
William M. Perry committed
433 434 435 436 437 438 439
** Emacs can now support 'wheeled' mice (such as the MS IntelliMouse)
under XFree86.  To enable this, simply put (mwheel-install) in your
.emacs file.

The variables `mwheel-follow-mouse' and `mwheel-scroll-amount'
determine where and by how much buffers are scrolled.

Gerd Moellmann's avatar
Gerd Moellmann committed
440 441 442 443
** Listing buffers with M-x list-buffers (C-x C-b) now shows
abbreviated file names.  Abbreviations can be customized by changing
`directory-abbrev-alist'.

Dave Love's avatar
#  
Dave Love committed
444 445 446 447 448 449 450 451 452 453 454 455
** Faces and frame parameters.

There are four new faces `scroll-bar', `border', `cursor' and `mouse'.
Setting the frame parameters `scroll-bar-foreground' and
`scroll-bar-background' sets foreground and background color of face
`scroll-bar' and vice versa.  Setting frame parameter `border-color'
sets the background color of face `border' and vice versa.  Likewise
for frame parameters `cursor-color' and face `cursor', and frame
parameter `mouse-color' and face `mouse'.

Changing frame parameter `font' sets font-related attributes of the
`default' face and vice versa.  Setting frame parameters
Francesco Potortì's avatar
etags:  
Francesco Potortì committed
456
`foreground-color' or `background-color' sets the colors of the
Dave Love's avatar
#  
Dave Love committed
457 458
`default' face and vice versa.

459
+++
Gerd Moellmann's avatar
Gerd Moellmann committed
460 461 462 463 464 465
** New face `menu'.

The face `menu' can be used to change colors and font of Emacs' menus.
Setting the font of LessTif/Motif menus is currently not supported;
attempts to set the font are ignored in this case.

Dave Love's avatar
Dave Love committed
466
+++
Dave Love's avatar
#  
Dave Love committed
467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502
** New frame parameter `screen-gamma' for gamma correction.

The new frame parameter `screen-gamma' specifies gamma-correction for
colors.  Its value may be nil, the default, in which case no gamma
correction occurs, or a number > 0, usually a float, that specifies
the screen gamma of a frame's display.

PC monitors usually have a screen gamma of 2.2.  smaller values result
in darker colors.  You might want to try a screen gamma of 1.5 for LCD
color displays.  The viewing gamma Emacs uses is 0.4545. (1/2.2).

The X resource name of this parameter is `screenGamma', class
`ScreenGamma'.

** Emacs has a new redisplay engine.

The new redisplay handles characters of variable width and height.
Italic text can be used without redisplay problems.  Fonts containing
oversized characters, i.e. characters larger than the logical height
of a font can be used.  Images of various formats can be displayed in
the text.

** Emacs has a new face implementation.

The new faces no longer fundamentally use X font names to specify the
font.  Instead, each face has several independent attributes--family,
height, width, weight and slant--that it may or may not specify.
These attributes can be merged from various faces, and then together
specify a font.

Faces are supported on terminals that can display color or fonts.
These terminal capabilities are auto-detected.  Details can be found
under Lisp changes, below.

** New default font is Courier 12pt.

Dave Love's avatar
Dave Love committed
503 504 505 506
+++
** When using a windowing terminal, each Emacs window now has a cursor
of its own.  When the window is selected, the cursor is solid;
otherwise, it is hollow.
Dave Love's avatar
#  
Dave Love committed
507 508 509 510 511 512

** Bitmap areas to the left and right of windows are used to display
truncation marks, continuation marks, overlay arrows and alike.  The
foreground, background, and stipple of these areas can be changed by
customizing face `fringe'.

Miles Bader's avatar
Miles Bader committed
513 514 515 516 517 518
** The mode line under X is now drawn with shadows by default.
You can change its appearance by modifying the face `mode-line'.

The variable `mode-line-inverse-video', which was used in older
versions of emacs to make the mode-line stand out, now defaults to nil,
and its use is deprecated.
Dave Love's avatar
#  
Dave Love committed
519 520 521

** LessTif support.

Dave Love's avatar
Dave Love committed
522 523
Emacs now runs with the LessTif toolkit (see <http://www.lesstif.org>).
You will need a version 0.88.1 or later.
Dave Love's avatar
#  
Dave Love committed
524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559

** Toolkit scroll bars.

Emacs now uses toolkit scrollbars if available.  When configured for
LessTif/Motif, it will use that toolkit's scrollbar.  Otherwise, when
configured for Lucid and Athena widgets, it will use the Xaw3d scroll
bar if Xaw3d is available.  You can turn off the use of toolkit scroll
bars by specifying `--with-toolkit-scroll-bars=no' when configuring
Emacs.

When you encounter problems with the Xaw3d scroll bar, watch out how
Xaw3d is compiled on your system.  If the Makefile generated from
Xaw3d's Imakefile contains a `-DNARROWPROTO' compiler option, and your
Emacs system configuration file `s/your-system.h' does not contain a
define for NARROWPROTO, you might consider adding it.  Take
`s/freebsd.h' as an example.

Alternatively, if you don't have access to the Xaw3d source code, take
a look at your system's imake configuration file, for example in the
directory `/usr/X11R6/lib/X11/config' (paths are different on
different systems).  You will find files `*.cf' there.  If your
system's cf-file contains a line like `#define NeedWidePrototypes NO',
add a `#define NARROWPROTO' to your Emacs system configuration file.

The reason for this is that one Xaw3d function uses `double' or
`float' function parameters depending on the setting of NARROWPROTO.
This is not a problem when Imakefiles are used because each system's
image configuration file contains the necessary information.  Since
Emacs doesn't use imake, this has do be done manually.

** Toggle buttons and radio buttons in menus.

When compiled with LessTif (or Motif) support, Emacs uses toolkit
widgets for radio and toggle buttons in menus.  When configured for
Lucid, Emacs draws radio buttons and toggle buttons similar to Motif.

Dave Love's avatar
Dave Love committed
560
+++
Dave Love's avatar
#  
Dave Love committed
561 562 563 564 565 566 567 568 569
** Highlighting of trailing whitespace.

When `show-trailing-whitespace' is non-nil, Emacs displays trailing
whitespace in the face `trailing-whitespace'.  Trailing whitespace is
defined as spaces or tabs at the end of a line.  To avoid busy
highlighting when entering new text, trailing whitespace is not
displayed if point is at the end of the line containing the
whitespace.

570
+++
Dave Love's avatar
#  
Dave Love committed
571 572 573 574 575
** Busy-cursor.

Emacs can optionally display a busy-cursor under X.  You can turn the
display on or off by customizing group `cursor'.

Dave Love's avatar
Dave Love committed
576
+++
Dave Love's avatar
#  
Dave Love committed
577 578 579 580 581 582 583
** Blinking cursor

M-x blink-cursor-mode toggles a blinking cursor under X and on
terminals having terminal capabilities `vi', `vs', and `ve'.  Blinking
and related parameters like frequency and delay can be customized in
the group `cursor'.

Dave Love's avatar
Dave Love committed
584
+++
Dave Love's avatar
#  
Dave Love committed
585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603
** New font-lock support mode `jit-lock-mode'.

This support mode is roughly equivalent to `lazy-lock' but is
generally faster.  It supports stealth and deferred fontification.
See the documentation of the function `jit-lock-mode' for more
details.

Font-lock uses jit-lock-mode as default support mode, so you don't
have to do anything to activate it.

** Tabs and variable-width text.

Tabs are now displayed with stretch properties; the width of a tab is
defined as a multiple of the normal character width of a frame, and is
independent of the fonts used in the text where the tab appears.
Thus, tabs can be used to line up text in different fonts.

** Enhancements of the Lucid menu bar

Dave Love's avatar
Dave Love committed
604
+++
Dave Love's avatar
#  
Dave Love committed
605 606 607 608
*** The Lucid menu bar now supports the resource "margin".

	emacs.pane.menubar.margin: 5

609 610
The default margin is 4 which makes the menu bar appear like the
LessTif/Motif one.
Dave Love's avatar
#  
Dave Love committed
611

612 613
*** Arrows that indicate sub-menus are now drawn with shadows, as in
LessTif and Motif.
Dave Love's avatar
#  
Dave Love committed
614

615
+++
Dave Love's avatar
#  
Dave Love committed
616 617
** Hscrolling in C code.

Gerd Moellmann's avatar
Gerd Moellmann committed
618 619 620
Horizontal scrolling now happens automatically if
`automatic-hscrolling' is set (the default).  This setting can be
customized.
Dave Love's avatar
#  
Dave Love committed
621

Dave Love's avatar
Dave Love committed
622
+++
Dave Love's avatar
#  
Dave Love committed
623 624 625
** Tool bar support.

Emacs supports a tool bar at the top of a frame under X.  For details
Dave Love's avatar
Dave Love committed
626 627
of how to define a tool bar, see the page describing Lisp-level
changes.  Tool-bar global minor mode controls whether or not it is
Dave Love's avatar
Dave Love committed
628 629 630
displayed and is on by default.  To make the tool bar more useful, we
need contributions of extra icons for specific modes (with copyright
assignments).
Dave Love's avatar
#  
Dave Love committed
631

Dave Love's avatar
Dave Love committed
632
+++
Dave Love's avatar
#  
Dave Love committed
633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650
** Mouse-sensitive mode line.

Different parts of the mode line under X have been made
mouse-sensitive.  Moving the mouse to a mouse-sensitive part in the mode
line changes the appearance of the mouse pointer to an arrow, and help
about available mouse actions is displayed either in the echo area, or
in the tooltip window if you have enabled one.

Currently, the following actions have been defined:

- Mouse-1 on the buffer name in the mode line switches between two
buffers.

- Mouse-2 on the buffer-name switches to the next buffer, and
M-mouse-2 switches to the previous buffer in the buffer list.

- Mouse-3 on the buffer-name displays a buffer menu.

Dave Love's avatar
Dave Love committed
651 652
- Mouse-2 on the read-only or modified status in the mode line (`%' or
`*') toggles the status.
Dave Love's avatar
#  
Dave Love committed
653 654 655 656 657 658

- Mouse-3 on the mode name display a minor-mode menu.

** LessTif/Motif file selection dialog.

When Emacs is configured to use LessTif or Motif, reading a file name
Dave Love's avatar
Dave Love committed
659
from a menu will pop up a file selection dialog if `use-dialog-box' is
Dave Love's avatar
#  
Dave Love committed
660 661 662 663 664 665 666 667 668
non-nil.

** Emacs can display faces on TTY frames.

Emacs automatically detects terminals that are able to display colors.
Faces with a weight greater than normal are displayed extra-bright, if
the terminal supports it.  Faces with a weight less than normal and
italic faces are displayed dimmed, if the terminal supports it.
Underlined faces are displayed underlined if possible.  Other face
669 670
attributes such as `overline', `strike-through', and `box' are ignored
on terminals.
Dave Love's avatar
#  
Dave Love committed
671

672 673 674
The command-line options `-fg COLOR', `-bg COLOR', and `-rv' are now
supported on character terminals.

Dave Love's avatar
#  
Dave Love committed
675 676
** Sound support

Gerd Moellmann's avatar
Gerd Moellmann committed
677
Emacs supports playing sound files on GNU/Linux and FreeBSD (Voxware
678
driver and native BSD driver, a.k.a. Luigi's driver).  Currently
Gerd Moellmann's avatar
Gerd Moellmann committed
679
supported file formats are RIFF-WAVE (*.wav) and Sun Audio (*.au).
Dave Love's avatar
#  
Dave Love committed
680

Dave Love's avatar
Dave Love committed
681
+++
Dave Love's avatar
#  
Dave Love committed
682 683 684 685 686 687 688 689 690
** A new variable, backup-by-copying-when-privileged-mismatch, gives
the highest file uid for which backup-by-copying-when-mismatch will be
forced on.  The assumption is that uids less than or equal to this
value are special uids (root, bin, daemon, etc.--not real system
users) and that files owned by these users should not change ownership,
even if your system policy allows users other than root to edit them.

The default is 200; set the variable to nil to disable the feature.

691
+++
Dave Love's avatar
#  
Dave Love committed
692 693 694 695 696 697
** A block cursor can be drawn as wide as the glyph under it under X.

As an example: if a block cursor is over a tab character, it will be
drawn as wide as that tab on the display.  To do this, set
`x-stretch-cursor' to a non-nil value.

698
+++
Dave Love's avatar
#  
Dave Love committed
699 700 701 702 703 704 705
** Empty display lines at the end of a buffer may be marked with a
bitmap (this is similar to the tilde displayed by vi).

This behavior is activated by setting the buffer-local variable
`indicate-empty-lines' to a non-nil value.  The default value of this
variable is found in `default-indicate-empty-lines'.

706
+++
Dave Love's avatar
#  
Dave Love committed
707 708 709
** There is a new "aggressive" scrolling method.

When scrolling up because point is above the window start, if the
Kenichi Handa's avatar
Kenichi Handa committed
710
value of the buffer-local variable `scroll-up-aggressively' is a
Dave Love's avatar
#  
Dave Love committed
711
number, Emacs chooses a new window start so that point ends up that
Gerd Moellmann's avatar
Gerd Moellmann committed
712
fraction of the window's height from the top of the window.
Dave Love's avatar
#  
Dave Love committed
713 714 715 716

When scrolling down because point is below the window end, if the
value of the buffer-local variable `scroll-down-aggessively' is a
number, Emacs chooses a new window start so that point ends up that
Gerd Moellmann's avatar
Gerd Moellmann committed
717
fraction of the window's height from the bottom of the window.
Dave Love's avatar
#  
Dave Love committed
718 719 720 721 722 723 724

** The rectangle commands now avoid inserting undesirable spaces,
notably at the end of lines.

All these functions have been rewritten to avoid inserting unwanted
spaces, and an optional prefix now allows them to behave the old way.

Dave Love's avatar
Dave Love committed
725
+++
Dave Love's avatar
Dave Love committed
726 727
There is a new command M-x replace-rectangle.

Dave Love's avatar
#  
Dave Love committed
728 729 730 731
** The new command M-x query-replace-regexp-eval acts like
query-replace-regexp, but takes a Lisp expression which is evaluated
after each match to get the replacement text.

732
+++
Gerd Moellmann's avatar
Gerd Moellmann committed
733 734
** M-x query-replace recognizes a new command `e' (or `E') that lets
you edit the replacement string.
Gerd Moellmann's avatar
Gerd Moellmann committed
735

Dave Love's avatar
Dave Love committed
736
** The new command mail-abbrev-complete-alias, bound to `M-TAB', lets
Gerd Moellmann's avatar
Gerd Moellmann committed
737 738 739
you complete mail aliases in the text, analogous to
lisp-complete-symbol.

740
+++
Dave Love's avatar
#  
Dave Love committed
741 742
** Emacs now resizes mini-windows if appropriate.

743
If a message is longer than one line, or minibuffer contents are
Gerd Moellmann's avatar
Gerd Moellmann committed
744 745 746
longer than one line, Emacs can resize the minibuffer window unless it
is on a frame of its own.  You can control resizing and the maximum
minibuffer window size by setting the following variables:
Dave Love's avatar
#  
Dave Love committed
747 748 749 750 751

- User option: max-mini-window-height

Maximum height for resizing mini-windows.  If a float, it specifies a
fraction of the mini-window frame's height.  If an integer, it
Gerd Moellmann's avatar
Gerd Moellmann committed
752
specifies a number of lines.
Dave Love's avatar
#  
Dave Love committed
753 754 755

Default is 0.25.

Gerd Moellmann's avatar
Gerd Moellmann committed
756 757 758 759 760 761 762 763 764
- User option: resize-mini-windows

How to resize mini-windows.  If nil, don't resize.  If t, always
resize ot fit the size of the text.  If `grow-only', let mini-windows
grow only, until they become empty, at which point they are shrunk
again.

Default is `grow-only'.

Gerd Moellmann's avatar
Gerd Moellmann committed
765 766
** The command `Info-search' now uses a search history.

Gerd Moellmann's avatar
Gerd Moellmann committed
767 768 769
** Changes to hideshow.el

Hideshow is now at version 5.x.  It uses a new algorithms for block
Thien-Thi Nguyen's avatar
Thien-Thi Nguyen committed
770 771
selection and traversal, includes more isearch support, and has more
conventional keybindings.
Gerd Moellmann's avatar
Gerd Moellmann committed
772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801

*** Generalized block selection and traversal

A block is now recognized by three things: its start and end regexps
(both strings), and a match-data selector (an integer) specifying
which sub-expression in the start regexp serves as the place where a
`forward-sexp'-like function can operate.  Hideshow always adjusts
point to this sub-expression before calling `hs-forward-sexp-func'
(which for most modes evaluates to `forward-sexp').

If the match-data selector is not specified, it defaults to zero,
i.e., the entire start regexp is valid, w/ no prefix.  This is
backwards compatible with previous versions of hideshow.  Please see
the docstring for variable `hs-special-modes-alist' for details.

*** Isearch support for updating mode line

During incremental search, if Hideshow minor mode is active, hidden
blocks are temporarily shown.  The variable `hs-headline' records the
line at the beginning of the opened block (preceding the hidden
portion of the buffer), and the mode line is refreshed.  When a block
is re-hidden, the variable is set to nil.

To show `hs-headline' in the mode line, you may wish to include
something like this in your .emacs.

	(add-hook 'hs-minor-mode-hook
	  (lambda ()
	    (add-to-list 'mode-line-format 'hs-headline)))

Thien-Thi Nguyen's avatar
Thien-Thi Nguyen committed
802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849
*** New customization var: `hs-hide-all-non-comment-function'

Normally, `hs-hide-all' hides everything, leaving only the
header lines of top-level forms (and comments, unless var
`hs-hide-comments-when-hiding-all' is non-nil).  It does this by
moving point to each top-level block beginning and hiding the
block there.  In some major modes (for example, Java), this
behavior results in few blocks left visible, which may not be so
useful.

You can now set var `hs-hide-all-non-comment-function' to a
function to be called at each top-level block beginning, instead
of the normal block-hiding function.  For example, the following
code defines a function to hide one level down and move point
appropriately, and then tells hideshow to use the new function.

(defun ttn-hs-hide-level-1 ()
  (hs-hide-level 1)
  (forward-sexp 1))
(setq hs-hide-all-non-comment-function 'ttn-hs-hide-level-1)

The name `hs-hide-all-non-comment-function' was chosen to
emphasize that this function is not called for comment blocks,
only for code blocks.

*** Command deleted: `hs-show-region'

Historical Note: This command was added to handle "unbalanced
parentheses" emergencies back when hideshow.el used selective
display for implementation.

*** Commands rebound to more conventional keys

The hideshow commands used to be bound to keys of the form "C-c
LETTER".  This is contrary to the Emacs keybinding convention,
which reserves that space for user modification.  Here are the
new bindings (which includes the addition of `hs-toggle-hiding'):

  hs-hide-block               C-c C-h
  hs-show-block               C-c C-s
  hs-hide-all                 C-c C-M-h
  hs-show-all                 C-c C-M-s
  hs-hide-level               C-c C-l
  hs-toggle-hiding            C-c C-c
  hs-mouse-toggle-hiding      [(shift button-2)]

These were chosen to roughly imitate those used by Outline mode.

850 851
** Changes to Change Log mode and Add-Log functions

Dave Love's avatar
Dave Love committed
852
+++
Gerd Moellmann's avatar
Gerd Moellmann committed
853 854
*** If you invoke `add-change-log-entry' from a backup file, it makes
an entry appropriate for the file's parent.  This is useful for making
855 856
log entries by comparing a version with deleted functions.

Dave Love's avatar
Dave Love committed
857
+++
Gerd Moellmann's avatar
Gerd Moellmann committed
858 859
**** New command M-x change-log-merge merges another log into the
current buffer.
Dave Love's avatar
Dave Love committed
860 861

+++
Gerd Moellmann's avatar
Gerd Moellmann committed
862 863
*** New command M-x change-log-redate fixes any old-style date entries
in a log file.
Gerd Moellmann's avatar
Gerd Moellmann committed
864

865
+++
Gerd Moellmann's avatar
Gerd Moellmann committed
866 867
*** Change Log mode now adds a file's version number to change log
entries if user-option `change-log-version-info-enabled' is non-nil.
Gerd Moellmann's avatar
Gerd Moellmann committed
868

869
+++
Gerd Moellmann's avatar
Gerd Moellmann committed
870
*** Unless the file is under version control the search for a file's
Dave Love's avatar
Dave Love committed
871 872 873
version number is performed based on regular expressions from
`change-log-version-number-regexp-list' which can be cutomized.
Version numbers are only found in the first 10 percent of a file.
Gerd Moellmann's avatar
Gerd Moellmann committed
874

Stefan Monnier's avatar
Stefan Monnier committed
875
*** Change Log mode now defines its own faces for font-lock highlighting.
Gerd Moellmann's avatar
Gerd Moellmann committed
876

877 878 879 880 881
** Changes to cmuscheme

*** The user-option `scheme-program-name' has been renamed
`cmuscheme-program-name' due to conflicts with xscheme.el.

882 883 884
** Changes in Font Lock

*** The new function `font-lock-remove-keywords' can be used to remove
Stefan Monnier's avatar
Stefan Monnier committed
885
font-lock keywords from the current buffer or from a specific major mode.
886

Stefan Monnier's avatar
Stefan Monnier committed
887 888
*** multiline patterns are now supported.

Stefan Monnier's avatar
Stefan Monnier committed
889 890
*** `font-lock-syntactic-face-function' allows major-modes to choose
the face used for each string/comment.
891

Gerd Moellmann's avatar
Gerd Moellmann committed
892 893
** Comint (subshell) changes

Miles Bader's avatar
Miles Bader committed
894 895 896 897 898 899 900 901 902 903 904 905 906
These changes generally affect all modes derived from comint mode, which
include shell-mode, gdb-mode, scheme-interaction-mode, etc.

*** By default, comint no longer uses the variable `comint-prompt-regexp'
to distinguish prompts from user-input.  Instead, it notices which
parts of the text were output by the process, and which entered by the
user, and attaches `field' properties to allow emacs commands to use
this information.  Common movement commands, notably beginning-of-line,
respect field boundaries in a fairly natural manner.  To disable this
feature, and use the old behavior, customize the user option
`comint-use-prompt-regexp-instead-of-fields'.

*** Comint now includes new features to send commands to running processes
Gerd Moellmann's avatar
Gerd Moellmann committed
907 908
and redirect the output to a designated buffer or buffers.

Miles Bader's avatar
Miles Bader committed
909
*** The command M-x comint-redirect-send-command reads a command and
Gerd Moellmann's avatar
Gerd Moellmann committed
910 911 912 913 914 915 916
buffer name from the mini-buffer.  The command is sent to the current
buffer's process, and its output is inserted into the specified buffer.

The command M-x comint-redirect-send-command-to-process acts like
M-x comint-redirect-send-command but additionally reads the name of
the buffer whose process should be used from the mini-buffer.

Miles Bader's avatar
Miles Bader committed
917 918 919
*** Packages based on comint now highlight user input and program prompts,
and support choosing previous input with mouse-2.  To control these features,
see the user-options `comint-highlight-input' and `comint-highlight-prompt'.
Gerd Moellmann's avatar
Gerd Moellmann committed
920

Miles Bader's avatar
Miles Bader committed
921
*** The new command `comint-write-output' (usually bound to `C-c C-s')
Miles Bader's avatar
Miles Bader committed
922 923 924
saves the output from the most recent command to a file.  With a prefix
argument, it appends to the file.

Miles Bader's avatar
Miles Bader committed
925
*** The command `comint-kill-output' has been renamed `comint-delete-output'
Miles Bader's avatar
Miles Bader committed
926 927 928
(usually bound to `C-c C-o'); the old name is aliased to it for
compatibility.

Eric M. Ludlam's avatar
Eric M. Ludlam committed
929 930
*** The new function `comint-add-to-input-history' adds commands to the input
ring (history).
Miles Bader's avatar
Miles Bader committed
931

Gerd Moellmann's avatar
Gerd Moellmann committed
932 933
** Changes to Rmail mode

Gerd Moellmann's avatar
Gerd Moellmann committed
934 935 936 937 938 939 940 941 942
*** The new user-option rmail-rmail-user-mail-address-regexp can be
set to fine tune the identification of of the correspondent when
receiving new mail.  If it matches the address of the sender, the
recipient is taken as correspondent of a mail.  If nil, the default,
`user-login-name' and `user-mail-address' are used to exclude yourself
as correspondent.

Usually you don't have to set this variable, except if you collect
mails sent by you under different user names.  Then it should be a
Dave Love's avatar
Dave Love committed
943
regexp matching your mail addresses.
Gerd Moellmann's avatar
Gerd Moellmann committed
944

Gerd Moellmann's avatar
Gerd Moellmann committed
945 946 947 948 949 950
*** The new user-option rmail-confirm-expunge controls whether and how
to ask for confirmation before expunging deleted messages from an
Rmail file.  You can choose between no confirmation, confirmation
with y-or-n-p, or confirmation with yes-or-no-p.  Default is to ask
for confirmation with yes-or-no-p.

Gerd Moellmann's avatar
Gerd Moellmann committed
951 952 953
*** RET is now bound in the Rmail summary to rmail-summary-goto-msg,
like `j'.

954 955
*** There is a new user option `rmail-digest-end-regexps' that
specifies the regular expressions to detect the line that ends a
956
digest message.
Gerd Moellmann's avatar
Gerd Moellmann committed
957

Dave Love's avatar
Dave Love committed
958 959 960
*** The new user option `rmail-automatic-folder-directives' specifies
in which folder to put messages automatically.

Gerd Moellmann's avatar
Gerd Moellmann committed
961 962
** Changes to TeX mode

Stefan Monnier's avatar
Stefan Monnier committed
963
*** The default mode has been changed from `plain-tex-mode' to
Gerd Moellmann's avatar
Gerd Moellmann committed
964 965
`latex-mode'.

Stefan Monnier's avatar
Stefan Monnier committed
966 967 968 969 970
*** latex-mode now has a simple indentation algorithm.

*** M-f and M-p jump around \begin...\end pairs.

*** Added support for outline-minor-mode.
971

Dave Love's avatar
#  
Dave Love committed
972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992
** Changes to RefTeX mode

*** RefTeX has new support for index generation.  Index entries can be
    created with `C-c <', with completion available on index keys.
    Pressing `C-c /' indexes the word at the cursor with a default
    macro.  `C-c >' compiles all index entries into an alphabetically
    sorted *Index* buffer which looks like the final index.  Entries
    can be edited from that buffer.

*** Label and citation key selection now allow to select several
    items and reference them together (use `m' to mark items, `a' or
    `A' to use all marked entries).

*** reftex.el has been split into a number of smaller files to reduce
    memory use when only a part of RefTeX is being used.

*** a new command `reftex-view-crossref-from-bibtex' (bound to `C-c &'
    in BibTeX-mode) can be called in a BibTeX database buffer in order
    to show locations in LaTeX documents where a particular entry has
    been cited.

993 994 995 996 997
** Emacs Lisp mode now allows multiple levels of outline headings.
The level of a heading is determined from the number of leading
semicolons in a heading line.  Toplevel forms starting with a `('
in column 1 are always made leaves.

Dave Love's avatar
#  
Dave Love committed
998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012
** The M-x time-stamp command (most commonly used on write-file-hooks)
has the following new features:

*** The patterns for finding the time stamp and for updating a pattern
may match text spanning multiple lines.  For example, some people like
to have the filename and date on separate lines.  The new variable
time-stamp-inserts-lines controls the matching for multi-line patterns.

*** More than one time stamp can be updated in the same file.  This
feature is useful if you need separate time stamps in a program source
file to both include in formatted documentation and insert in the
compiled binary.  The same time-stamp will be written at each matching
pattern.  The variable time-stamp-count enables this new feature; it
defaults to 1.

1013
** Partial Completion mode now completes environment variables in
Gerd Moellmann's avatar
Gerd Moellmann committed
1014 1015
file names.

Dave Love's avatar
Dave Love committed
1016
+++
Dave Love's avatar
#  
Dave Love committed
1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027
** Tooltips.

Tooltips are small X windows displaying a help string at the current
mouse position.  To use them, use the Lisp package `tooltip' which you
can access via the user option `tooltip-mode'.

Tooltips also provides support for GUD debugging.  If activated,
variable values can be displayed in tooltips by pointing at them with
the mouse in source buffers.  You can customize various aspects of the
tooltip display in the group `tooltip'.

Dave Love's avatar
Dave Love committed
1028
+++
Dave Love's avatar
#  
Dave Love committed
1029 1030 1031
** Customize changes

*** Customize now supports comments about customized items.  Use the
Dave Love's avatar
Dave Love committed
1032 1033
`State' menu to add comments.  Note that customization comments will
cause the customizations to fail in earlier versions of Emacs.
Dave Love's avatar
#  
Dave Love committed
1034 1035 1036 1037 1038

*** The new option `custom-buffer-done-function' says whether to kill
Custom buffers when you've done with them or just bury them (the
default).

1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053
*** The keyword :set-after in defcustom allows to specify dependencies
between custom options.  Example:

  (defcustom default-input-method nil
    "*Default input method for multilingual text (a string).
  This is the input method activated automatically by the command
  `toggle-input-method' (\\[toggle-input-method])."
    :group 'mule
    :type '(choice (const nil) string)
    :set-after '(current-language-environment))

This specifies that default-input-method should be set after
current-language-environment even if default-input-method appears
first in a custom-set-variables statement.

Dave Love's avatar
#  
Dave Love committed
1054 1055
** New features in evaluation commands

Gerd Moellmann's avatar
Gerd Moellmann committed
1056
*** The commands to evaluate Lisp expressions, such as C-M-x in Lisp
Dave Love's avatar
#  
Dave Love committed
1057 1058 1059 1060 1061
modes, C-j in Lisp Interaction mode, and M-:, now bind the variables
print-level, print-length, and debug-on-error based on the
customizable variables eval-expression-print-level,
eval-expression-print-length, and eval-expression-debug-on-error.

Gerd Moellmann's avatar
Gerd Moellmann committed
1062 1063 1064
*** The function `eval-defun' (M-C-x) now loads Edebug and instruments
code when called with a prefix argument.

Gerd Moellmann's avatar
Gerd Moellmann committed
1065 1066
** Ispell changes

1067
+++
1068 1069
*** The command `ispell' now spell-checks a region if
transient-mark-mode is on, and the mark is active.  Otherwise it
Gerd Moellmann's avatar
Gerd Moellmann committed
1070 1071
spell-checks the current buffer.

1072
+++
Gerd Moellmann's avatar
Gerd Moellmann committed
1073 1074 1075 1076 1077 1078
*** Support for synchronous subprocesses - DOS/Windoze - has been
added.

*** An "alignment error" bug was fixed when a manual spelling
correction is made and re-checked.

Gerd Moellmann's avatar
Gerd Moellmann committed
1079
*** An Italian and a Portuguese dictionary definition has been added.
Gerd Moellmann's avatar
Gerd Moellmann committed
1080 1081 1082 1083 1084 1085 1086 1087 1088 1089

*** Region skipping performance has been vastly improved in some
cases.

*** Spell checking HTML buffers has been improved and isn't so strict
on syntax errors.

*** The buffer-local words are now always placed on a new line at the
end of the buffer.

Dave Love's avatar
#  
Dave Love committed
1090 1091 1092 1093 1094 1095 1096 1097 1098 1099
** Dired changes

*** New variable `dired-recursive-deletes' determines if the delete
command will delete non-empty directories recursively.  The default
is, delete only empty directories.

*** New variable `dired-recursive-copies' determines if the copy
command will copy directories recursively.  The default is, do not
copy directories recursively.

1100 1101 1102 1103
*** In command `dired-do-shell-command' (usually bound to `!') a `?'
in the shell command has a special meaning similar to `*', but with
the difference that the command will be run on each file individually.

Gerd Moellmann's avatar
Gerd Moellmann committed
1104 1105 1106 1107
*** The new command `dired-find-alternate-file' (usually bound to `a')
replaces the Dired buffer with the buffer for an alternate file or
directory.

1108 1109 1110 1111 1112 1113
*** The new command `dired-show-file-type' (usually bound to `w') shows
a message in the echo area describing what type of file the point is on.
This command invokes the external program `file' do its work, and so
will only work on systems with that program, and will be only as
accurate or inaccurate as it is.

Gerd Moellmann's avatar
Gerd Moellmann committed
1114 1115 1116
*** Dired now properly handles undo changes of adding/removing `-R'
from ls switches.

1117 1118 1119 1120 1121
*** Dired commands that prompt for a destination file now allow the use
of the `M-n' command in the minibuffer to insert the source filename,
which the user can then edit.  This only works if there is a single
source file, not when operating on multiple marked files.

Dave Love's avatar
#  
Dave Love committed
1122 1123 1124
** The variable mail-specify-envelope-from controls whether to
use the -f option when sending mail.

Gerd Moellmann's avatar
Gerd Moellmann committed
1125 1126 1127 1128 1129 1130 1131 1132 1133 1134
** CC mode changes.

Note: This release contains changes that might not be compatible with
current user setups (although it's believed that these
incompatibilities will only show in very uncommon circumstances).
However, since the impact is uncertain, these changes may be rolled
back depending on user feedback.  Therefore there's no forward
compatibility guarantee wrt the new features introduced in this
release.

Gerd Moellmann's avatar
Gerd Moellmann committed
1135 1136 1137 1138 1139 1140 1141 1142 1143
*** c-style-variables-are-local-p now defaults to t.
This is an incompatible change that has been made to make the behavior
of the style system wrt global variable settings less confusing for
non-advanced users.  If you know what this variable does you might
want to set it to nil in your .emacs, otherwise you probably don't
have to bother.

Defaulting c-style-variables-are-local-p to t avoids the confusing
situation that occurs when a user sets some style variables globally
Eli Zaretskii's avatar
Eli Zaretskii committed
1144
and edits both a Java and a non-Java file in the same Emacs session.
Gerd Moellmann's avatar
Gerd Moellmann committed
1145 1146 1147 1148
If the style variables aren't buffer local in this case, loading of
the second file will cause the default style (either "gnu" or "java"
by default) to override the global settings made by the user.

Gerd Moellmann's avatar
Gerd Moellmann committed
1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280
*** New initialization procedure for the style system.
When the initial style for a buffer is determined by CC Mode (from the
variable c-default-style), the global values of style variables now
take precedence over the values specified by the chosen style.  This
is different than the old behavior: previously, the style-specific
settings would override the global settings.  This change makes it
possible to do simple configuration in the intuitive way with
Customize or with setq lines in one's .emacs file.

By default, the global value of every style variable is the new
special symbol set-from-style, which causes the value to be taken from
the style system.  This means that in effect, only an explicit setting
of a style variable will cause the "overriding" behavior described
above.

Also note that global settings override style-specific settings *only*
when the initial style of a buffer is chosen by a CC Mode major mode
function.  When a style is chosen in other ways --- for example, by a
call like (c-set-style "gnu") in a hook, or via M-x c-set-style ---
then the style-specific values take precedence over any global style
values.  In Lisp terms, global values override style-specific values
only when the new second argument to c-set-style is non-nil; see the
function documentation for more info.

The purpose of these changes is to make it easier for users,
especially novice users, to do simple customizations with Customize or
with setq in their .emacs files.  On the other hand, the new system is
intended to be compatible with advanced users' customizations as well,
such as those that choose styles in hooks or whatnot.  This new system
is believed to be almost entirely compatible with current
configurations, in spite of the changed precedence between style and
global variable settings when a buffer's default style is set.

(Thanks to Eric Eide for clarifying this explanation a bit.)

**** c-offsets-alist is now a customizable variable.
This became possible as a result of the new initialization behavior.

This variable is treated slightly differently from the other style
variables; instead of using the symbol set-from-style, it will be
completed with the syntactic symbols it doesn't already contain when
the style is first initialized.  This means it now defaults to the
empty list to make all syntactic elements get their values from the
style system.

**** Compatibility variable to restore the old behavior.
In case your configuration doesn't work with this change, you can set
c-old-style-variable-behavior to non-nil to get the old behavior back
as far as possible.

*** Improvements to line breaking and text filling.
CC Mode now handles this more intelligently and seamlessly wrt the
surrounding code, especially inside comments.  For details see the new
chapter about this in the manual.

**** New variable to recognize comment line prefix decorations.
The variable c-comment-prefix-regexp has been added to properly
recognize the line prefix in both block and line comments.  It's
primarily used to initialize the various paragraph recognition and
adaptive filling variables that the text handling functions uses.

**** New variable c-block-comment-prefix.
This is a generalization of the now obsolete variable
c-comment-continuation-stars to handle arbitrary strings.

**** CC Mode now uses adaptive fill mode.
This to make it adapt better to the paragraph style inside comments.

It's also possible to use other adaptive filling packages inside CC
Mode, notably Kyle E. Jones' Filladapt mode (http://wonderworks.com/).
A new convenience function c-setup-filladapt sets up Filladapt for use
inside CC Mode.

Note though that the 2.12 version of Filladapt lacks a feature that
causes it to work suboptimally when c-comment-prefix-regexp can match
the empty string (which it commonly does).  A patch for that is
available from the CC Mode web site (http://www.python.org/emacs/
cc-mode/).

**** It's now possible to selectively turn off auto filling.
The variable c-ignore-auto-fill is used to ignore auto fill mode in
specific contexts, e.g. in preprocessor directives and in string
literals.

**** New context sensitive line break function c-context-line-break.
It works like newline-and-indent in normal code, and adapts the line
prefix according to the comment style when used inside comments.  If
you're normally using newline-and-indent, you might want to switch to
this function.

*** Fixes to IDL mode.
It now does a better job in recognizing only the constructs relevant
to IDL.  E.g. it no longer matches "class" as the beginning of a
struct block, but it does match the CORBA 2.3 "valuetype" keyword.
Thanks to Eric Eide.

*** Improvements to the Whitesmith style.
It now keeps the style consistently on all levels and both when
opening braces hangs and when they don't.

**** New lineup function c-lineup-whitesmith-in-block.

*** New lineup functions c-lineup-template-args and c-indent-multi-line-block.
See their docstrings for details.  c-lineup-template-args does a
better job of tracking the brackets used as parens in C++ templates,
and is used by default to line up continued template arguments.

*** c-lineup-comment now preserves alignment with a comment on the
previous line.  It used to instead preserve comments that started in
the column specified by comment-column.

*** c-lineup-C-comments handles "free form" text comments.
In comments with a long delimiter line at the start, the indentation
is kept unchanged for lines that start with an empty comment line
prefix.  This is intended for the type of large block comments that
contain documentation with its own formatting.  In these you normally
don't want CC Mode to change the indentation.

*** The `c' syntactic symbol is now relative to the comment start
instead of the previous line, to make integers usable as lineup
arguments.

*** All lineup functions have gotten docstrings.

*** More preprocessor directive movement functions.
c-down-conditional does the reverse of c-up-conditional.
c-up-conditional-with-else and c-down-conditional-with-else are
variants of these that also stops at "#else" lines (suggested by Don
Provan).

*** Minor improvements to many movement functions in tricky situations.

Gerd Moellmann's avatar
Gerd Moellmann committed
1281 1282 1283 1284
** Makefile mode changes

*** The mode now uses the abbrev table `makefile-mode-abbrev-table'.

1285
*** Conditionals and include statements are now highlighted when
Gerd Moellmann's avatar
Gerd Moellmann committed
1286 1287
Fontlock mode is active.

Gerd Moellmann's avatar
Gerd Moellmann committed
1288