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* lisp/filecache.el (file-cache-minibuffer-complete): Use completion-try-completion and completion-all-completions. * etc/NEWS: Add news entry.
170 lines
5 KiB
Text
170 lines
5 KiB
Text
GNU Emacs NEWS -- history of user-visible changes.
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Copyright (C) 2017 Free Software Foundation, Inc.
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See the end of the file for license conditions.
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Please send Emacs bug reports to bug-gnu-emacs@gnu.org.
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If possible, use M-x report-emacs-bug.
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This file is about changes in Emacs version 27.
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See file HISTORY for a list of GNU Emacs versions and release dates.
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See files NEWS.26, NEWS.25, ..., NEWS.18, and NEWS.1-17 for changes
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in older Emacs versions.
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You can narrow news to a specific version by calling 'view-emacs-news'
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with a prefix argument or by typing C-u C-h C-n.
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Temporary note:
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+++ indicates that all necessary documentation updates are complete.
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(This means all relevant manuals in doc/ AND lisp doc-strings.)
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--- means no change in the manuals is needed.
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When you add a new item, use the appropriate mark if you are sure it applies,
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* Installation Changes in Emacs 27.1
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* Startup Changes in Emacs 27.1
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* Changes in Emacs 27.1
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---
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** The new option 'tooltip-resize-echo-area' avoids truncating tooltip text
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on GUI frames when tooltips are displayed in the echo area. Instead,
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it resizes the echo area as needed to accommodate the full tool-tip
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text.
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+++
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** New function 'logcount' calculates an integer's Hamming weight.
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+++
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** New function 'libxml-available-p'.
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This function returns non-nil if libxml support is both compiled in
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and available at run time. Lisp programs should use this function to
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detect built-in libxml support, instead of testing for that
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indirectly, e.g., by checking that functions like
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'libxml-parse-html-region' return nil.
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* Editing Changes in Emacs 27.1
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---
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** New variable 'x-wait-for-event-timeout'.
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This controls how long Emacs will wait for updates to the graphical
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state to take effect (making a frame visible, for example).
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+++
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** The new user option 'electric-quote-replace-double' controls
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whether '"' is also replaced in 'electric-quote-mode'. If non-nil,
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'"' is replaced by a double typographic quote.
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* Changes in Specialized Modes and Packages in Emacs 27.1
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** Dired
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+++
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*** The new user option 'dired-create-destination-dirs' controls whether
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'dired-do-copy' and 'dired-rename-file' should create non-existent
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directories in the destination.
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** Ibuffer
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---
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*** New filter ibuffer-filter-by-process; bound to '/E'.
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** Edebug
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+++
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*** The runtime behavior of Edebug's instrumentation can be changed
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using the new variables 'edebug-behavior-alist',
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'edebug-after-instrumentation-function' and
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'edebug-new-definition-function'. Edebug's behavior can be changed
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globally or for individual definitions.
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** Enhanced xterm support
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*** New variable 'xterm-set-window-title' controls whether Emacs sets
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the XTerm window title. This feature is experimental and is disabled
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by default.
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** Gamegrid
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** ERT
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+++
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*** New variable 'ert-quiet' allows to make ERT output in batch mode
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less verbose by removing non-essential information.
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---
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*** Gamegrid now determines its default glyph size based on display
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dimensions, instead of always using 16 pixels. As a result, Tetris,
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Snake and Pong are more playable on HiDPI displays.
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** Filecache
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---
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*** Completing filenames in the minibuffer via 'C-TAB' now uses the
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styles as configured by the variable 'completion-styles'.
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* New Modes and Packages in Emacs 27.1
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* Incompatible Lisp Changes in Emacs 27.1
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** The FILENAME argument to 'file-name-base' is now mandatory and no
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longer defaults to 'buffer-file-name'.
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---
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** The function 'eldoc-message' now accepts a single argument.
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Programs that called it with multiple arguments before should pass
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them through 'format' first. Even that is discouraged: for ElDoc
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support, you should set 'eldoc-documentation-function' instead of
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calling 'eldoc-message' directly.
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* Lisp Changes in Emacs 27.1
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---
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** The 'file-system-info' function is now available on all platforms.
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instead of just Microsoft platforms. This fixes a 'get-free-disk-space'
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bug on OS X 10.8 and later (Bug#28639).
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---
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** The function 'get-free-disk-space' returns now a non-nil value for
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remote systems, which support this check.
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+++
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** The function 'make-string' accepts an additional optional argument.
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If the optional third argument is non-nil, 'make-string' will produce
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a multibyte string even if its second argument is an ASCII character.
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* Changes in Emacs 27.1 on Non-Free Operating Systems
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----------------------------------------------------------------------
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This file is part of GNU Emacs.
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GNU Emacs is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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GNU Emacs is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU Emacs. If not, see <https://www.gnu.org/licenses/>.
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Local variables:
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coding: utf-8
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mode: outline
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paragraph-separate: "[ ]*$"
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end:
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