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