|
126
|
1 -*- mode:outline -*-
|
|
|
2
|
|
0
|
3 * Introduction
|
|
|
4 ==============
|
|
|
5
|
|
223
|
6 This file presents some general information about XEmacs. It is
|
|
276
|
7 primarily about the changes in recent XEmacs versions and its release
|
|
|
8 history.
|
|
223
|
9
|
|
|
10 Use `C-c C-f' to move to the next equal level of outline, and
|
|
|
11 `C-c C-b' to move to previous equal level. `C-h m' will give more
|
|
380
|
12 info about the Outline mode. Many commands are also available through
|
|
223
|
13 the menubar.
|
|
126
|
14
|
|
|
15 Users who would like to know which capabilities have been introduced
|
|
223
|
16 in each release should look at the appropriate section of this file.
|
|
|
17 Starting with version 20.0, XEmacs includes ChangeLogs, which can be
|
|
|
18 consulted for a more detailed list of changes.
|
|
|
19
|
|
|
20 Users interested in some of the details of how XEmacs differs from GNU
|
|
|
21 Emacs should read the section "What's Different?" near the end of this
|
|
|
22 file.
|
|
|
23
|
|
225
|
24 N.B. The term "GNU Emacs" refers to any release of Emacs Version
|
|
|
25 19 from the Free Software Foundation's GNU Project. (We do not
|
|
|
26 say just "Emacs" as Richard M. Stallman ["RMS"] prefers, because
|
|
|
27 it is clearly a more generic term.) The term "XEmacs" refers to
|
|
223
|
28 this program or to its predecessors "Era" and "Lucid Emacs". The
|
|
|
29 predecessor of all these program is called "Emacs 18". When no
|
|
|
30 particular version is implied, "Emacs" will be used.
|
|
126
|
31
|
|
|
32
|
|
371
|
33 * Changes in XEmacs 21.2
|
|
|
34 ========================
|
|
373
|
35
|
|
388
|
36 ** Interactive searching and matching case improvements:
|
|
|
37 Case sensitiveness in searching operations is controled by the variable
|
|
|
38 `case-fold-search' (if non-nil, case is ignored while searching). This
|
|
|
39 mechanism has now been slightly improved in the case of an interactive
|
|
|
40 search: if the search string (or regexp) happens to contain uppercase
|
|
|
41 characters, the searching is forced to be case-sensitive, regardless of
|
|
|
42 the value of `case-fold-search'. This behavior affects all functions
|
|
|
43 performing interactive searches, like `zap-to-char', `tags-search',
|
|
|
44 `occur' etc.
|
|
|
45
|
|
377
|
46 ** You can now create "indirect buffers", like in GNU Emacs. An
|
|
373
|
47 indirect buffer shares its text with another buffer ("base buffer"),
|
|
|
48 but has its own major mode, local variables, extents, and narrowing.
|
|
|
49 An indirect buffer has a name of its own, distinct from those of the
|
|
|
50 base buffer and all other buffers. An indirect buffer cannot itself
|
|
|
51 be visiting a file (though its base buffer can be). The base buffer
|
|
|
52 cannot itself be indirect.
|
|
|
53
|
|
|
54 Use (make-indirect-buffer BASE-BUFFER NAME) to make an indirect buffer
|
|
|
55 named NAME whose base is BASE-BUFFER. If BASE-BUFFER is an indirect
|
|
|
56 buffer, its base buffer is used as the base for the new buffer.
|
|
371
|
57
|
|
373
|
58 You can make an indirect buffer current, or switch to it in a window,
|
|
|
59 just as you would a non-indirect buffer.
|
|
|
60
|
|
|
61 The function `buffer-base-buffer', given an indirect buffer, returns
|
|
|
62 its base buffer. It returns nil when given an ordinary buffer (not
|
|
|
63 indirect). `buffer-indirect-children' returns a list of the indirect
|
|
|
64 children of a base buffer.
|
|
|
65
|
|
377
|
66
|
|
380
|
67 * Lisp and internal changes in XEmacs 21.2
|
|
377
|
68 ==========================================
|
|
|
69
|
|
|
70 ** Functions for decoding base64 encoding are now available; see
|
|
|
71 `base64-encode-region', `base64-encode-string', `base64-decode-region'
|
|
|
72 and `base64-decode-string'.
|
|
373
|
73
|
|
380
|
74 ** Many basic lisp operations are now faster.
|
|
|
75 This is especially the case when running a Mule-enabled XEmacs.
|
|
|
76
|
|
|
77 A general overhaul of the lisp engine should produce a speedup of 1.4
|
|
|
78 in a Latin-1 XEmacs, and 2.1 in a Mule XEmacs. These numbers were
|
|
|
79 obtained running (byte-compile "simple.el"), which should be a pretty
|
|
|
80 typical test of `pure' lisp.
|
|
|
81
|
|
|
82 Lisp hash tables have been re-implemented. The Common Lisp style hash
|
|
|
83 table interface has been made standard, and moved from cl.el into fast
|
|
|
84 C code (See the section on hash tables in the XEmacs Lisp Reference).
|
|
|
85 A speedup factor of 3 can be expected with code that makes intensive
|
|
|
86 use of hash tables.
|
|
|
87
|
|
|
88 The garbage collector has been tuned, leading to a speedup of 1.16.
|
|
|
89
|
|
|
90 The family of functions that iterate over lists, like `memq', and
|
|
|
91 `rassq', have been made a little faster (typically 1.3).
|
|
|
92
|
|
|
93 Lisp function calls are faster, by approximately a factor of two.
|
|
|
94 However, defining inline functions (via defsubst) still make sense.
|
|
|
95
|
|
|
96 And finally, a few functions have had dramatic performance
|
|
|
97 improvements. For example, (last long-list) is now 30 times faster.
|
|
|
98
|
|
|
99 Of course, your mileage will vary.
|
|
|
100
|
|
|
101 Many operations do not see any improvement. Surprisingly, running
|
|
|
102 (font-lock-refontify-buffer) does not use the Lisp engine much at all.
|
|
|
103 Speeding up your favorite slow operation is an excellent project to
|
|
|
104 improve XEmacs. Don't forget to profile!
|
|
|
105
|
|
|
106 ** XEmacs finally has an automated test suite!
|
|
|
107 Although this is not yet very sophisticated, it is already responsible
|
|
|
108 for several important bug fixes in XEmacs. To try it out, simply use
|
|
|
109 the makefile target `make check' after building XEmacs.
|
|
|
110
|
|
|
111 ** New hash table implementation
|
|
|
112 As was pointed out above, the standard interface to hash tables is now
|
|
|
113 the Common Lisp interface, as described in Common Lisp, the Language
|
|
|
114 (CLtL2, by Steele). The older interface (functions with names
|
|
|
115 containing the phrase `hashtable') will continue to work, but the
|
|
|
116 preferred interface now has names containing the phrase `hash-table'.
|
|
|
117
|
|
|
118 Here's the executive overview: create hash tables using
|
|
|
119 make-hash-table, and use gethash, puthash, remhash, maphash and
|
|
|
120 clrhash to manipulate entries in the hash table. See the (updated)
|
|
|
121 Lisp Reference Manual for details.
|
|
|
122
|
|
|
123 ** Lisp code handles circular lists much more robustly.
|
|
|
124 Many basic lisp functions used to loop forever when given a circular
|
|
|
125 list. Now this is more likely to trigger a `circular-list' error.
|
|
|
126 Printing a circular list now results in something like this:
|
|
|
127
|
|
|
128 (progn (setq x (cons 'foo 'foo)) (setcdr x x) x)
|
|
|
129 ==> (foo ... <circular list>)
|
|
|
130
|
|
|
131 An extra bonus is that checking for circularities is not just
|
|
|
132 friendlier, but actually faster than checking for quit.
|
|
|
133
|
|
373
|
134
|
|
274
|
135 * Changes in XEmacs 21.0
|
|
209
|
136 ========================
|
|
|
137
|
|
219
|
138 ** XEmacs has been unbundled into constituent installable packages.
|
|
298
|
139 See the Info documentation under "Packages" for more information.
|
|
|
140 See the file `etc/PACKAGES' in the distribution for a partial list of
|
|
|
141 packages available at the time of the 21.0 release.
|
|
219
|
142
|
|
290
|
143 ** XEmacs is now supported under Microsoft Windows 95/98 and Windows
|
|
|
144 NT operating systems. For starters, look at the XEmacs on Windows FAQ
|
|
294
|
145 at <URL:http://jagor.srce.hr/~hniksic/xemacs-on-windows-faq.txt>. To
|
|
290
|
146 discuss Windows-specific issues, subscribe to the mailing list at
|
|
|
147 <xemacs-nt-request@xemacs.org>.
|
|
|
148
|
|
|
149 ** XEmacs will now use `XEmacs' as its application class if it finds
|
|
|
150 any `XEmacs' resources in the resource database. Otherwise, it will
|
|
|
151 continue to use the `Emacs' class.
|
|
|
152
|
|
294
|
153 ** The options menu has been ported to Custom.
|
|
|
154 This means that each entry in the options menu acts as if you had customized
|
|
|
155 the corresponding variable by hand. ### WARNING: there is currently no
|
|
|
156 upgrading function to help you port your old options settings to the new
|
|
|
157 format. Consequently, if you want to modify the options for XEmacs 21, you
|
|
|
158 will have to set them all again through the menu, and remove the code loading
|
|
|
159 .xemacs-options from your .emacs.
|
|
|
160
|
|
278
|
161 ** When the Zmacs region is active, `M-x query-replace' and the other
|
|
|
162 replace commands now operate on the region contents only.
|
|
|
163
|
|
371
|
164 ** Using the new `-private' option, you can make XEmacs use a private
|
|
|
165 colormap.
|
|
223
|
166
|
|
284
|
167 ** The `imenu' package has been ported to XEmacs and is available as a
|
|
|
168 package.
|
|
|
169
|
|
219
|
170 ** `echo-keystrokes' can now be a floating-point number, so that you
|
|
276
|
171 can set it to intervals shorter than one second.
|
|
219
|
172
|
|
|
173 (setq echo-keystrokes 0.1)
|
|
|
174
|
|
280
|
175 ** The new command `center-to-window-line' works like `recenter'
|
|
|
176 (bound to `C-l'), only it does not redisplay the whole display area.
|
|
|
177
|
|
284
|
178 ** The M-. command will now first search through exact tags matches,
|
|
219
|
179 and then through inexact matches, as one would expect.
|
|
|
180
|
|
223
|
181 ** The new variable `user-full-name' can be used to customize one's
|
|
|
182 name when using the Emacs mail and news reading facilities.
|
|
|
183
|
|
380
|
184 Normally, `user-full-name' is a function that returns the full name of
|
|
223
|
185 a user or UID, as specified by the system -- for instance,
|
|
380
|
186 (user-full-name "root") returns something like "Super-User". However,
|
|
223
|
187 when the function is called without arguments, it will return the
|
|
380
|
188 value of the `user-full-name' variable. The `user-full-name' variable
|
|
223
|
189 is initialized using the environment variable NAME and (failing that)
|
|
|
190 the user's system name.
|
|
|
191
|
|
380
|
192 The behavior of the `user-full-name' function with an argument
|
|
225
|
193 specified is unchanged.
|
|
223
|
194
|
|
|
195 ** The new command `M-x customize-changed-options' lets you customize
|
|
|
196 all the options whose default values have changed in recent Emacs
|
|
|
197 versions. You specify a previous Emacs version number as argument,
|
|
|
198 and the command creates a customization buffer showing all the
|
|
|
199 customizable options whose default values were changed since that
|
|
|
200 version.
|
|
|
201
|
|
|
202 If you don't specify a particular version number argument, then the
|
|
|
203 customization buffer shows all the customizable options for which
|
|
|
204 Emacs versions of changes are recorded.
|
|
|
205
|
|
249
|
206 ** The new command `add-log-convert' can be used to convert the
|
|
|
207 old-style (pre-20.3) ChangeLog buffers to new style, for
|
|
|
208 consistency. A reminder: if you wish to revert to old-style
|
|
|
209 ChangeLogs instead, customize the value of `add-log-time-format'
|
|
|
210 variable.
|
|
|
211
|
|
284
|
212 ** The new command `zap-up-to-char' is now available. It is similar
|
|
|
213 to `zap-to-char', except that it does not delete the searched-for
|
|
|
214 character. It is not bound to a key by default.
|
|
|
215
|
|
|
216 ** You can now store a number into a register with `C-u NUMBER C-x r n'
|
|
|
217 REG, increment it by INC with `C-u INC C-x r + REG' (to increment by
|
|
|
218 one, omit C-u INC), and insert it in the buffer with `C-x r g REG'.
|
|
|
219 This is useful for writing keyboard macros.
|
|
|
220
|
|
|
221 ** The M-: command, when given a prefix argument, will now insert its
|
|
|
222 result to the current buffer.
|
|
|
223
|
|
|
224 ** The `C-h c' command, when given a prefix argument, will now insert
|
|
|
225 the message into the current buffer.
|
|
|
226
|
|
298
|
227 ** Horizontally split windows may now be dragged using the mouse.
|
|
|
228 Because of this, the dividers between vertical windows are always
|
|
|
229 visible. To turn it off, set `vertical-divider-always-visible-p' to
|
|
|
230 nil.
|
|
286
|
231
|
|
223
|
232 ** XEmacs/Mule (internationalization) changes.
|
|
|
233
|
|
284
|
234 *** Mule support now works on TTY's. Use `set-terminal-coding-system'
|
|
|
235 and `set-keyboard-coding-system' to specify the coding system of your
|
|
|
236 display and keyboard.
|
|
274
|
237
|
|
225
|
238 *** Egg/SJ3 input method is now officially supported. Quail and
|
|
|
239 Egg/Skk have been available through the generalized Leim since 20.3.
|
|
223
|
240
|
|
|
241 *** Localized Japanese menubars are available if XEmacs is built with
|
|
|
242 XFONTSET and either the X11 libraries are built with X_LOCALE defined
|
|
|
243 or the native C libraries support Japanese localization. This has
|
|
|
244 been available since 20.3, only it hasn't been announced before.
|
|
219
|
245
|
|
290
|
246 ** Jamie Zawinski's `gdb-highlight' extension is now distributed with
|
|
284
|
247 the `debug' package. gdb-highlight makes most objects printed in a
|
|
|
248 gdb buffer be mouse-sensitive: as text shows up in the buffer, it is
|
|
|
249 parsed, and objects which are recognized have context-sensitive
|
|
|
250 commands attached to them. To use it, add the following to `.emacs':
|
|
|
251
|
|
286
|
252 (add-hook 'gdb-mode-hook (lambda () (require 'gdb-highlight)))
|
|
284
|
253
|
|
290
|
254 ** The package popper.el is now included in the edit-utils package.
|
|
|
255 It has been greatly enhanced with respect to the one once included
|
|
|
256 with the ilisp package and should work well under XEmacs 21.0.
|
|
|
257
|
|
396
|
258 ** Gnuserv changes
|
|
|
259
|
|
|
260 *** Like the old 'gnudoit' program. Gnuclient -batch now can read from stdin.
|
|
|
261
|
|
|
262 *** Again like the old 'gnudoit' program, gnuclient now can return multiple
|
|
|
263 lines.
|
|
|
264
|
|
278
|
265 ** C mode changes
|
|
|
266
|
|
|
267 *** Multiline macros are now handled, both as they affect indentation,
|
|
|
268 and as recognized syntax. New syntactic symbol cpp-macro-cont is
|
|
|
269 assigned to second and subsequent lines of a multiline macro
|
|
|
270 definition.
|
|
|
271
|
|
|
272 *** A new style "user" which captures all non-hook-ified
|
|
|
273 (i.e. top-level) .emacs file variable setings and customizations.
|
|
|
274 Style "cc-mode" is an alias for "user" and is deprecated. "gnu" style
|
|
|
275 is still the default however.
|
|
|
276
|
|
|
277 *** "java" style now conforms to Sun's JDK coding style.
|
|
|
278
|
|
|
279 *** There are new commands c-beginning-of-defun, c-end-of-defun which
|
|
|
280 are alternatives which you could bind to C-M-a and C-M-e if you prefer
|
|
|
281 them. They do not have key bindings by default.
|
|
|
282
|
|
|
283 *** New and improved implementations of M-a (c-beginning-of-statement)
|
|
|
284 and M-e (c-end-of-statement).
|
|
|
285
|
|
|
286 *** C++ namespace blocks are supported, with new syntactic symbols
|
|
|
287 namespace-open, namespace-close, and innamespace.
|
|
|
288
|
|
|
289 *** File local variable settings of c-file-style and c-file-offsets
|
|
|
290 makes the style variables local to that buffer only.
|
|
|
291
|
|
|
292 *** New indentation functions c-lineup-close-paren,
|
|
|
293 c-indent-one-line-block, c-lineup-dont-change.
|
|
|
294
|
|
|
295 *** Improvements (hopefully!) to the way CC Mode is loaded. You
|
|
|
296 should now be able to do a (require 'cc-mode) to get the entire
|
|
|
297 package loaded properly for customization in your .emacs file. A new
|
|
|
298 variable c-initialize-on-load controls this and is t by default.
|
|
|
299
|
|
251
|
300 ** In Text mode, now only blank lines separate paragraphs.
|
|
|
301 This makes it possible to get the full benefit of Adaptive Fill mode
|
|
|
302 in Text mode, and other modes derived from it (such as Mail mode).
|
|
278
|
303 TAB in Text mode now runs the command indent-relative; this makes a
|
|
|
304 practical difference only when you use indented paragraphs.
|
|
251
|
305
|
|
|
306 As a result, the old Indented Text mode is now identical to Text mode,
|
|
|
307 and is an alias for it.
|
|
|
308
|
|
|
309 If you want spaces at the beginning of a line to start a paragraph,
|
|
|
310 use the new mode, Paragraph Indent Text mode.
|
|
|
311
|
|
298
|
312 ** Changes to Gnus, the XEmacs newsreader.
|
|
|
313
|
|
|
314 *** New functionality for using Gnus as an offline newsreader has been
|
|
|
315 added. A plethora of new commands and modes have been added. See the
|
|
|
316 Gnus manual for the full story.
|
|
|
317
|
|
|
318 *** The nndraft backend has returned, but works differently than
|
|
|
319 before. All Message buffers are now also articles in the nndraft
|
|
|
320 group, which is created automatically.
|
|
|
321
|
|
|
322 *** `gnus-alter-header-function' can now be used to alter header
|
|
|
323 values.
|
|
|
324
|
|
|
325 *** `gnus-summary-goto-article' now accept Message-ID's.
|
|
|
326
|
|
|
327 *** A new Message command for deleting text in the body of a message
|
|
|
328 outside the region: `C-c C-v'.
|
|
|
329
|
|
|
330 *** You can now post to component group in nnvirtual groups with
|
|
|
331 `C-u C-c C-c'.
|
|
|
332
|
|
|
333 *** `nntp-rlogin-program' -- new variable to ease customization.
|
|
|
334
|
|
|
335 *** `C-u C-c C-c' in `gnus-article-edit-mode' will now inhibit
|
|
|
336 re-highlighting of the article buffer.
|
|
|
337
|
|
|
338 *** New element in `gnus-boring-article-headers' -- `long-to'.
|
|
|
339
|
|
|
340 *** `M-i' symbolic prefix command. See the section "Symbolic
|
|
|
341 Prefixes" in the Gnus manual for details.
|
|
|
342
|
|
|
343 *** `L' and `I' in the summary buffer now take the symbolic prefix
|
|
|
344 `a' to add the score rule to the "all.SCORE" file.
|
|
|
345
|
|
|
346 *** `gnus-simplify-subject-functions' variable to allow greater
|
|
|
347 control over simplification.
|
|
|
348
|
|
|
349 *** `A T' -- new command for fetching the current thread.
|
|
|
350
|
|
|
351 *** `/ T' -- new command for including the current thread in the
|
|
|
352 limit.
|
|
|
353
|
|
|
354 *** `M-RET' is a new Message command for breaking cited text.
|
|
|
355
|
|
|
356 *** \\1-expressions are now valid in `nnmail-split-methods'.
|
|
|
357
|
|
380
|
358 *** The `custom-face-lookup' function has been removed.
|
|
298
|
359 If you used this function in your initialization files, you must
|
|
|
360 rewrite them to use `face-spec-set' instead.
|
|
|
361
|
|
|
362 *** Cancelling now uses the current select method. Symbolic prefix
|
|
|
363 `a' forces normal posting method.
|
|
|
364
|
|
|
365 *** New command to translate M******** sm*rtq**t*s into proper text
|
|
|
366 -- `W d'.
|
|
|
367
|
|
|
368 *** For easier debugging of nntp, you can set `nntp-record-commands'
|
|
|
369 to a non-nil value.
|
|
|
370
|
|
|
371 *** nntp now uses ~/.authinfo, a .netrc-like file, for controlling
|
|
|
372 where and how to send AUTHINFO to NNTP servers.
|
|
|
373
|
|
|
374 *** A command for editing group parameters from the summary buffer
|
|
|
375 has been added.
|
|
|
376
|
|
|
377 *** A history of where mails have been split is available.
|
|
|
378
|
|
|
379 *** A new article date command has been added -- `article-date-iso8601'.
|
|
|
380
|
|
|
381 *** Subjects can be simplified when threading by setting
|
|
|
382 `gnus-score-thread-simplify'.
|
|
|
383
|
|
|
384 *** A new function for citing in Message has been added --
|
|
|
385 `message-cite-original-without-signature'.
|
|
|
386
|
|
|
387 *** `article-strip-all-blank-lines' -- new article command.
|
|
|
388
|
|
|
389 *** A new Message command to kill to the end of the article has
|
|
|
390 been added.
|
|
|
391
|
|
|
392 *** A minimum adaptive score can be specified by using the
|
|
|
393 `gnus-adaptive-word-minimum' variable.
|
|
|
394
|
|
|
395 *** The "lapsed date" article header can be kept continually
|
|
|
396 updated by the `gnus-start-date-timer' command.
|
|
|
397
|
|
|
398 *** Web listserv archives can be read with the nnlistserv backend.
|
|
|
399
|
|
|
400 *** Old dejanews archives can now be read by nnweb.
|
|
|
401
|
|
|
402 *** Byte-compilation of user-specs now works under XEmacs.
|
|
|
403
|
|
290
|
404 ** The `dir' files are no longer essential for functioning of the Info
|
|
|
405 subsystem. If the `dir' file does not exist in an Info directory, the
|
|
|
406 relevant information will be generated on-the-fly.
|
|
278
|
407
|
|
380
|
408 This behavior can be customized, look for `Info-auto-generate-directory'
|
|
292
|
409 and `Info-save-auto-generated-dir' in the `info' customization group.
|
|
278
|
410
|
|
219
|
411
|
|
274
|
412 * Lisp and internal changes in XEmacs 21.0
|
|
219
|
413 ==========================================
|
|
|
414
|
|
274
|
415 ** It is now possible to build XEmacs with support for 31-bit Lisp
|
|
|
416 integers (normally, Lisp integers are only 28 bits wide on 32-bit
|
|
|
417 machines.) Configure with --use-minimal-tagbits to test. With this
|
|
284
|
418 change, the maximum buffer size on 32-bit machines is increased from
|
|
|
419 128M to 1G. This setting will be made default in a future XEmacs
|
|
|
420 version.
|
|
|
421
|
|
286
|
422 ** Specifier changes.
|
|
|
423
|
|
|
424 *** When instantiating a specifier, the window locale now has a higher
|
|
|
425 precedence than the buffer locale. This is because the window locale
|
|
|
426 is more specific than the buffer locale.
|
|
|
427
|
|
290
|
428 *** The new macro `let-specifier' can be used to temporarily add
|
|
|
429 specifications to specifiers. See the documentation for details.
|
|
|
430
|
|
286
|
431 *** The new specifiers `vertical-scrollbar-visible-p' and
|
|
|
432 `horizontal-scrollbar-visible-p' may be used to control scrollbar
|
|
290
|
433 visibility. Previously, the only way to remove a scrollbar was to set
|
|
|
434 its size to 0. This method is still supported for backward
|
|
|
435 compatibility.
|
|
286
|
436
|
|
|
437 *** The new specifiers `scrollbar-on-left-p' and `scrollbar-on-top-p'
|
|
|
438 may be used to control the position of the vertical and horizontal
|
|
|
439 toolbar. Previously, their position could be changed only through the
|
|
|
440 use of X resources.
|
|
|
441
|
|
|
442 *** The new draggable vertical dividers between windows may be turned
|
|
298
|
443 off using the `vertical-divider-always-visible-p' specifier. When
|
|
|
444 this is set to nil, the vertical dividers between windows are shown
|
|
|
445 only when needed, and they are not draggable.
|
|
286
|
446
|
|
|
447 Other properties of the vertical dividers may be controlled using
|
|
380
|
448 `vertical-divider-shadow-thickness', `vertical-divider-line-width' and
|
|
286
|
449 `vertical-divider-spacing' specifiers, which see.
|
|
|
450
|
|
284
|
451 ** Frame focus management changes.
|
|
|
452
|
|
|
453 *** When the variable focus-follows-mouse is non-nil, `select-frame'
|
|
|
454 no longer permanently selects a different frame. The frame selection
|
|
|
455 is temporary and is reverted when the current command terminates, much
|
|
|
456 like the buffer selected by `set-buffer'. This is the same as in FSF
|
|
|
457 Emacs.
|
|
|
458
|
|
|
459 *** The new function `focus-frame' sets the window system focus to
|
|
|
460 FRAME (and selects it), regardless of the value of
|
|
|
461 `focus-follows-mouse'. Doing this is not well behaved, so be
|
|
|
462 absolutely sure that you want this.
|
|
|
463
|
|
|
464 The code that uses `select-frame' only to get the window manager focus
|
|
|
465 should be changed to use `set-frame-focus' instead, so that they keep
|
|
|
466 working when `focus-follows-mouse' is non-nil.
|
|
|
467
|
|
|
468 *** The special forms `save-selected-frame' and `with-selected-frame'
|
|
|
469 can now be used to temporarily change selected frame.
|
|
|
470
|
|
|
471 *** The behavior of `other-frame' command (`C-x 5 o') is unaffected by
|
|
|
472 these changes.
|
|
280
|
473
|
|
290
|
474 ** The function `select-window' now has an optional second argument
|
|
|
475 NORECORD which if non-nil inhibits the recording of a buffer change.
|
|
|
476
|
|
|
477 ** The function `vertical-motion' now correctly handles the second,
|
|
|
478 optional WINDOW argument. A new third argument PIXELS, if non-nil,
|
|
|
479 indicates that the returned motion should be in pixels.
|
|
|
480
|
|
|
481 ** The new function `vertical-motion-pixels' is similar to
|
|
|
482 vertical-motion but takes as input a vertical motion in pixels.
|
|
|
483
|
|
|
484 ** The new functions window-text-area-pixel-{width,height,edges} can
|
|
|
485 be used to obtain information about the text-displaying area of a
|
|
|
486 window.
|
|
|
487
|
|
|
488 ** The new functions `shrink-window-pixels' and `enlarge-window-pixels'
|
|
|
489 can be used to adjust the size of a window by a pixel amount.
|
|
|
490
|
|
|
491 ** The new function `window-displayed-text-pixel-height' can be used
|
|
|
492 to determine the height of the text actually displayed in a window.
|
|
|
493
|
|
284
|
494 ** The arithmetic comparison functions <, >, =, /= now accept a
|
|
|
495 variable number of arguments.
|
|
280
|
496
|
|
|
497 This means that if you want to test whether A < B < C, you can write
|
|
|
498 it as (< A B C) instead of (and (< A B) (< B C)). Likewise,
|
|
371
|
499 (apply #'> LIST) now tests if LIST is monotonously increasing -- and
|
|
280
|
500 so on.
|
|
|
501
|
|
223
|
502 ** The XEmacs hashtables now have a consistent read/print syntax.
|
|
|
503 This means that a hashtable will be readably printed in a
|
|
|
504 structure-like form:
|
|
|
505
|
|
|
506 #s(hashtable size 2 data (key1 value1 key2 value2))
|
|
|
507
|
|
|
508 When XEmacs reads this form, it will create a new hashtable according
|
|
|
509 to description. This allows you to easily dump hashtables to files
|
|
|
510 using `prin1', and read them back in using `read'.
|
|
|
511
|
|
|
512 If `print-readably' is non-nil, a more relaxed syntax is used; for
|
|
|
513 instance:
|
|
|
514
|
|
|
515 #<hashtable size 2/13 data (key1 value1 key2 value2) 0x874d>
|
|
|
516
|
|
286
|
517 ** It is now possible to build XEmacs with LDAP support.
|
|
|
518 You will need to install a LDAP library first. The following have
|
|
|
519 been tested:
|
|
380
|
520 - LDAP 3.3 from the University of Michigan
|
|
286
|
521 (get it from <URL:http://www.umich.edu/~dirsvcs/ldap/>)
|
|
384
|
522 - OpenLDAP 1.0.3 from the OpenLDAP Foundation
|
|
|
523 (get it from <URL:http://www.openldap.org/>)
|
|
286
|
524 - LDAP SDK 1.0 from Netscape Corp.
|
|
|
525 (get it from <URL:http://developer.netscape.com/>)
|
|
284
|
526
|
|
241
|
527 ** When profiling is in effect, a call-count of all recorded functions
|
|
|
528 is now calculated. This information is stored in
|
|
|
529 `call-count-profile-table', and is utilized by `profile-results' as
|
|
286
|
530 well as the new command `profile-call-count-results'.
|
|
241
|
531
|
|
284
|
532 ** It is now an error to change the value of a symbol whose name
|
|
|
533 starts with a colon, if it is interned in the standard obarray.
|
|
|
534
|
|
|
535 However, setting such a symbol to its proper value, which is that
|
|
|
536 symbol itself, is not an error. This is for the sake of programs that
|
|
|
537 support pre-19.12 XEmacs and pre-20 GNU Emacs by explicitly setting
|
|
|
538 these variables to themselves.
|
|
|
539
|
|
|
540 ** The `concat' function no longer accepts integer arguments.
|
|
|
541
|
|
278
|
542 ** The new function `string' concatenates all its argument characters
|
|
|
543 and returns the resulting string. This is consistent with other
|
|
|
544 functions, like `list', `vector', etc.
|
|
|
545
|
|
290
|
546 ** The function `temp-directory' is now available to return the
|
|
|
547 directory to store temporary files. On Unix this will be obtained
|
|
|
548 from TMPDIR, defaulting to `/tmp'.
|
|
|
549
|
|
284
|
550 ** The function load-average now accepts an optional argument
|
|
|
551 USE-FLOATS. If it is non-nil, the load average values are returned as
|
|
|
552 floating point numbers, rather than as integers to be divided by 100.
|
|
278
|
553
|
|
223
|
554 ** The `make-event' function now supports the TYPE and PLIST
|
|
276
|
555 arguments, which can be used to create various events from Lisp. See
|
|
|
556 the documentation for details.
|
|
223
|
557
|
|
219
|
558 ** `function-interactive' is a new function that returns the
|
|
|
559 interactive specification of a funcallable object.
|
|
|
560
|
|
|
561 ** The new `lmessage' function allows printing of a formatted message
|
|
|
562 with a particular label.
|
|
|
563
|
|
223
|
564 (lmessage 'progress "Processing... %d" counter)
|
|
219
|
565
|
|
|
566 This function is more convenient than `display-message' because it
|
|
|
567 automatically applies `format' to its arguments.
|
|
|
568
|
|
|
569 ** The new `lwarn' function, analogous to `lmessage', allows printing
|
|
|
570 a formatted warning, with a non-default CLASS or LABEL.
|
|
|
571
|
|
284
|
572 ** The new function `split-path' can now be used to explode the
|
|
|
573 components of a colon-separated search path into a list.
|
|
|
574
|
|
|
575 (split-path "foo:bar")
|
|
|
576 => ("foo" "bar")
|
|
|
577
|
|
274
|
578 ** Specifiers and symbols whose value is a specifier are now allowed
|
|
276
|
579 as modeline specifications.
|
|
274
|
580
|
|
|
581 ** defcustom now accepts the keyword `:version'. Use this to specify
|
|
|
582 in which version of Emacs a certain variable's default value changed.
|
|
|
583 For example,
|
|
|
584
|
|
|
585 (defcustom foo-max 34 "*Maximum number of foo's allowed."
|
|
|
586 :type 'integer
|
|
|
587 :group 'foo
|
|
276
|
588 :version "21.0")
|
|
274
|
589
|
|
|
590 This information is used to control the customize-changed-options
|
|
|
591 command.
|
|
|
592
|
|
225
|
593 ** The line number tracking in modeline is now efficient, even for
|
|
|
594 very large buffers. This is achieved by caching the line numbers of
|
|
|
595 recent buffer positions, and reusing them. This cache is used only in
|
|
|
596 the buffers where `line-number-mode' is in effect.
|
|
259
|
597
|
|
274
|
598 ** When the new GNU Malloc aka Doug Lea Malloc is available, it will
|
|
|
599 be used. This should result in better performance on Linux systems
|
|
|
600 with libc6.
|
|
|
601
|
|
276
|
602 ** The code XEmacs uses to assemble its various paths into the
|
|
|
603 directory hierarchy has been rewritten to support the package system.
|
|
298
|
604 Look under "Startup Paths" in the Info documentation for more
|
|
|
605 information.
|
|
276
|
606
|
|
371
|
607 *** site-lisp is now longer part of the load-path by default.
|
|
276
|
608 Its use is deprecated, but you can specify --with-site-lisp=yes at the
|
|
|
609 configure command line to get it back.
|
|
|
610
|
|
|
611 *** `Info-default-directory-list' is now obsolete. If you want to
|
|
|
612 change the path which XEmacs uses to search for info files, set
|
|
|
613 `Info-directory-list' instead.
|
