1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
| | GNU Emacs NEWS -- history of user-visible changes.
Copyright (C) 2017 Free Software Foundation, Inc.
See the end of the file for license conditions.
Please send Emacs bug reports to bug-gnu-emacs@gnu.org.
If possible, use M-x report-emacs-bug.
This file is about changes in Emacs version 27.
See file HISTORY for a list of GNU Emacs versions and release dates.
See files NEWS.26, NEWS.25, NEWS.24, NEWS.23, NEWS.22, NEWS.21,
NEWS.20, NEWS.19, NEWS.18, and NEWS.1-17 for changes in older Emacs
versions.
You can narrow news to a specific version by calling 'view-emacs-news'
with a prefix argument or by typing C-u C-h C-n.
Temporary note:
+++ indicates that all necessary documentation updates are complete.
(This means all relevant manuals in doc/ AND lisp doc-strings.)
--- means no change in the manuals is needed.
When you add a new item, use the appropriate mark if you are sure it applies,
\f
* Installation Changes in Emacs 27.1
\f
* Startup Changes in Emacs 27.1
\f
* Changes in Emacs 27.1
---
** The new option 'tooltip-resize-echo-area' avoids truncating tooltip text
on GUI frames when tooltips are displayed in the echo area. Instead,
it resizes the echo area as needed to accommodate the full tool-tip
text.
+++
** New function 'logcount' calculates an integer's Hamming weight.
\f
* Editing Changes in Emacs 27.1
---
** New variable 'x-wait-for-event-timeout'.
This controls how long Emacs will wait for updates to the graphical
state to take effect (making a frame visible, for example).
+++
** The new user option 'electric-quote-replace-double' controls
whether '"' is also replaced in 'electric-quote-mode'. If non-nil,
'"' is replaced by a double typographic quote.
\f
* Changes in Specialized Modes and Packages in Emacs 27.1
** Dired
+++
*** The new user option 'dired-create-destination-dirs' controls whether
'dired-do-copy' and 'dired-rename-file' should create non-existent
directories in the destination.
** Edebug
+++
*** The runtime behavior of Edebug's instrumentation can be changed
using the new variable 'edebug-behavior-alist' and the new abnormal
hooks 'edebug-after-instrumentation-functions' and
'edebug-new-definition-functions'. Edebug's behavior can be changed
globally or for individual definitions.
** Enhanced xterm support
*** New variable 'xterm-set-window-title' controls whether Emacs sets
the XTerm window title. This feature is experimental and is disabled
by default.
\f
* New Modes and Packages in Emacs 27.1
\f
* Incompatible Lisp Changes in Emacs 27.1
** The FILENAME argument to 'file-name-base' is now mandatory and no
longer defaults to 'buffer-file-name'.
---
** The function 'eldoc-message' now accepts a single argument.
Programs that called it with multiple arguments before should pass
them through 'format' first. Even that is discouraged: for ElDoc
support, you should set 'eldoc-documentation-function' instead of
calling 'eldoc-message' directly.
\f
* Lisp Changes in Emacs 27.1
---
** The 'file-system-info' function is now available on all platforms.
instead of just Microsoft platforms. This fixes a 'get-free-disk-space'
bug on OS X 10.8 and later (Bug#28639).
---
** The function 'get-free-disk-space' returns now a non-nil value for
remote systems, which support this check.
\f
* Changes in Emacs 27.1 on Non-Free Operating Systems
\f
----------------------------------------------------------------------
This file is part of GNU Emacs.
GNU Emacs is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
GNU Emacs is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with GNU Emacs. If not, see <https://www.gnu.org/licenses/>.
\f
Local variables:
coding: utf-8
mode: outline
paragraph-separate: "[ \f]*$"
end:
|