* doc/misc/trampver.texi:
* lisp/net/trampver.el: Change version to "2.4.3.27.1".
(customize-package-emacs-version-alist): Add Tramp version
integrated in Emacs 27.1.
Occasionally, loading cl-generic.el from source requires
max_specpdl_size > 1600 when bootstrapping, and thus fails.
In any case we are very close to the limit.
* src/eval.c (init_eval_once): Raise max_specpdl_size to 1800.
* doc/lispref/variables.texi (Local Variables): Update docs.
* etc/NEWS: Rearrange and mark entries whether documented or not.
* doc/lispref/streams.texi (Output Variables): Document the new
default of 'print-quoted'.
* doc/lispref/keymaps.texi (Functions for Key Lookup): Document
that KEYMAP arg to 'lookup-key' can also be a list.
* doc/lispref/customize.texi (Variable Definitions): Document the
:local keyword of 'defcustom'.
* doc/lispref/numbers.texi (Float Basics): Document changes in
'logb'.
* doc/lispref/hooks.texi (Standard Hooks): Document
'comint-password-function'.
* doc/emacs/display.texi (Text Scale): Document text-size
adjustment using the mouse wheel.
* doc/emacs/frames.texi (Mouse Commands): Document image scaling
with the mouse wheel.
* doc/emacs/windows.texi (Window Convenience): Document
'global-tab-line-mode'.
* doc/emacs/search.texi (Repeat Isearch, Symbol Search)
(Isearch Yank): Document the new support for numeric arguments in
Isearch commands.
(Special Isearch): Document 'M-s M->' and 'M-s M-<'.
(Search Customizations): Document 'isearch-lazy-count'. Improve
indexing.
(Not Exiting Isearch): Document the new value of
'isearch-allow-scroll'.
* doc/emacs/maintaining.texi (Xref Commands): Document the new 'g'
key binding.
* doc/emacs/package.texi (Package Installation): Document changes
in 'package-check-signature'.
* doc/emacs/maintaining.texi (VC Change Log): Document
'vc-log-search'.
* doc/emacs/dired.texi (Operating on Files): Document
'dired-vc-rename'.
* doc/lispref/functions.texi (Obsolete Functions): Make
documentation of functions that obsolete symbols match the
advertised calling conventions.
* lisp/emacs-lisp/byte-run.el (define-obsolete-function-alias)
(define-obsolete-variable-alias, define-obsolete-face-alias):
State in the doc strings that WHEN is a mandatory argument, to be
consistent with the advertised calling convention. (Bug#38675)
* doc/emacs/buffers.texi (Buffers): Say that buffers are killed
when no longer needed. Suggested by Jean-Christophe Helary
<jean.christophe.helary@traduction-libre.org>.
'module-load' most likely doesn't do what users expect. Users should
use 'load' and its wrappers, which do the right thing.
* doc/lispref/loading.texi (Dynamic Modules): Document
disadvantages of 'module-load' and recommend normal 'load' and
its wrappers instead.
* doc/lispref/internals.texi (Module Functions): Recommend
'load' over 'module-load'.
This is a useful property when doing further bit-twiddling with the
magnitude array before/after calling extract_big_integer or
make_big_integer. For example, constructing an emacs_limb_t object
using repeated shift-and-add should work as expected, but relies on
the type not having padding bits. Since the C standard already
guarantees that unsigned integers use a pure binary representation,
not having padding bits is enough to guarantee that the type has
unique object representations in the sense of C++’s
std::has_unique_object_representations.
* doc/lispref/internals.texi (Module Values): Document that
emacs_limb_t doesn’t have padding bits.
* src/emacs-module.c: Verify that emacs_limb_t doesn’t have padding
bits.
* doc/lispref/display.texi (Displaying Messages): Document
set-message-function and clear-message-function.
* lisp/minibuffer.el (minibuffer-message-clear-timeout): New defcustom.
(minibuffer-message-timer, minibuffer-message-overlay): New variables.
(set-minibuffer-message, clear-minibuffer-message): New functions.
(set-message-function, clear-message-function): Set variables to
set-minibuffer-message and clear-minibuffer-message respectively.
* src/keyboard.c (read_char): Call clear_message when
Vclear_message_function is a function.
* src/xdisp.c (set_message): Call Vset_message_function when it's a function.
(clear_message): Call Vclear_message_function when it's a function.
(syms_of_xdisp): New variables set-message-function and clear-message-function
(bug#38457).
* lisp/files.el (backup-by-copying-when-privileged-mismatch): In addition
to checking the file uid, a second test is added: if the file gid is not
greater than backup-by-copying-when-privileged-mismatch,
backup-by-copying-when-mismatch will also be forced on.
* doc/emacs/files.texi, doc/lispref/backups.texi: Updated documentation.
Also fixed a typo in the Emacs reference manual, changing "higher" to
"no greater" so that the limit is no longer documented reversed.
* doc/lispref/syntax.texi (Parser State): mention parse-partial-sexp as a
function returning a parser state, and the function to which one supplies a
parser state as an argument for continued parsing.
Refine the documentation of syntax-ppss-context, and correct the text
introducing it and another function.
* lisp/emacs-lisp/regexp-opt.el (regexp-opt):
* doc/lispref/searching.texi (Regexp Functions):
Be more specific about how the KEEP-ORDER argument actually works.
If nil, the regexp guarantees a longest match; this is the behaviour
that many callers implicitly rely on.
* lisp/vc/diff.el (diff-buffers): New command.
(diff, diff-no-select, diff-file-local-copy): Improve docstrings.
* doc/emacs/files.texi:
* etc/NEWS: Document new command, and the previously-undocumented
ability for 'diff' to compare buffers.
* doc/lispref/internals.texi (Garbage Collection)
(Pure Storage):
* src/alloc.c (Fgarbage_collect): Update the documentation of
pure-space overflow for when pdumper is used. (Bug#38492)
The `not' and `intersection' forms, and `or' inside these forms,
now accept characters and single-character strings as arguments.
Previously, they had to be wrapped in `any' forms.
This does not add expressive power but is a convenience and is easily
understood.
* doc/lispref/searching.texi (Rx Constructs): Amend the documentation.
* etc/NEWS: Announce the change.
* lisp/emacs-lisp/rx.el (rx--charset-p, rx--translate-not)
(rx--charset-intervals, rx): Accept characters and 1-char strings in
more places.
* test/lisp/emacs-lisp/rx-tests.el (rx-not, rx-charset-or)
(rx-def-in-charset-or, rx-intersection): Test the change.
These character set operations, together with `not' for set
complement, improve the compositionality of rx, and reduce duplication
in complicated cases. Named character classes are not permitted in
set operations.
* lisp/emacs-lisp/rx.el (rx--translate-any): Split into multiple
functions.
(rx--foldl, rx--parse-any, rx--generate-alt, rx--intervals-to-alt)
(rx--complement-intervals, rx--intersect-intervals)
(rx--union-intervals, rx--charset-intervals, rx--charset-union)
(rx--charset-all, rx--charset-intersection, rx--translate-union)
(rx--translate-intersection): New.
(rx--translate-not, rx--translate-form, rx--builtin-forms, rx):
Add `union' and `intersection'.
* test/lisp/emacs-lisp/rx-tests.el (rx-union ,rx-def-in-union)
(rx-intersection, rx-def-in-intersection): New tests.
* doc/lispref/searching.texi (Rx Constructs):
* etc/NEWS:
Document `union' and `intersection'.
* lisp/faces.el (face-spec-recalc): Handle the :extend attribute
specially and always inherit it from the default spec unless
overwritten in a theme (bug#37774).
* test/lisp/faces-tests.el (faces--test-data-dir): New variable.
(faces--test-extend-with-themes): Use test themes instead of ones
from etc/themes. Update expected values.
* test/data/themes/faces-test-dark-theme.el: New file.
* test/data/themes/faces-test-light-theme.el: New file.
* doc/lispref/display.texi (Face Attributes):
Update the description of ':extend'.
* etc/NEWS: Update the entry for ':extend'.
* etc/themes/adwaita-theme.el:
* etc/themes/deeper-blue-theme.el:
* etc/themes/dichromacy-theme.el:
* etc/themes/leuven-theme.el:
* etc/themes/light-blue-theme.el:
* etc/themes/manoj-dark-theme.el:
* etc/themes/misterioso-theme.el:
* etc/themes/tango-dark-theme.el:
* etc/themes/tango-theme.el:
* etc/themes/tsdh-dark-theme.el:
* etc/themes/tsdh-light-theme.el:
* etc/themes/wheatgrass-theme.el:
* etc/themes/wombat-theme.el: Remove the now-redundant ':extend'
attribute in all the themes.
* doc/misc/semantic.texi (Parser code, Tag handling)
(Semanticdb Internals, Analyzer Internals, Tools): Fix file
names according to what was actually imported from the
original CEDET. (Bug#38451)
* lisp/simple.el (default-font-height, default-font-width)
(default-line-height): Say in the doc strings that the default
face these functions use is for the currently selected frame.
* doc/lispref/display.texi (Attribute Functions)
(Low-Level Font): Document more clearly the dependence of the
results of 'face-font', 'default-font-width', and
'default-font-height' on the frame's definition of the default
face.
* lisp/simple.el (minibuffer-history-values): New function, should be
used to access the minibuffer input history variable when the
minibuffer might be active. If the variable is buffer-local, the
previous buffer's value will be used.
(goto-history-element): Use the new function to access the minibuffer
history.
(minibuffer-history-isearch-wrap): Use the new function to access the
minibuffer history.
* src/minibuf.c (read_minibuf): Switch to previous buffer temporarily
before updating history list (Bug#38317).
(read-from-minibuffer): Extend documentation to mention that the
result of using the command will be added to the history list by
default.
* doc/lispref/minibuf.texi (Minibuffer History): Mention the
possibility of using a buffer-local variable as history.
* etc/NEWS: Announce changes.
(tab-bar--tab): Use float-time instead of integer.
This improves correct detection of recent tabs switched within 1 sec.
(tab-bar--current-tab, tab-bar--current-tab-index)
(tab-bar--tab-index, tab-bar--tab-index-by-name)
(tab-bar--tab-index-recent): Add optional arg FRAME.
(tab-bar-move-tab-to-frame): Add with-selected-frame for tab-bar-close-tab.
(tab-bar--reusable-frames): New function.
(tab-bar-get-buffer-tab): Add index to the found tab.
(display-buffer-in-tab): Use `tab-name' entry instead of `name'.
Add `reusable-frames' entry. (bug#38354)
As described in the new comment added to emacs-module.c, using GMP
directly in the module interface has significant downsides: it couples
the module interface directly to the implementation and requires
module authors to link their module against the same GMP library as
Emacs itself, which is often difficult and an unnecessary burden. By
picking a representation for the magnitude that often matches the one
used by GMP, we can avoid overhead when converting from and to GMP in
most cases.
Loading the test module in test/data/emacs-module and evaluating
(dotimes (_ 10000)
(mod-test-double (* 2 most-negative-fixnum)))
under Callgrind shows that on my (GNU/Linux) machine Emacs only spends
10% of the CPU time of mod-test-double in mpz_import and mpz_export
combined, even though that function does little else. (By contrast,
30% is spent in allocate_pseudovector.)
* src/emacs-module.h.in: Don't check EMACS_MODULE_GMP. Don't include
gmp.h. Remove emacs_mpz structure. Instead, define type alias
emacs_limb_t and macro EMACS_LIMB_MAX.
* src/module-env-27.h: Change interface of extract_big_integer and
make_big_integer to take a sign-magnitude representation instead of
mpz_t.
* src/emacs-module.c: Don't check EMACS_MODULE_GMP or
EMACS_MODULE_HAVE_MPZ_T. Add a comment about the chosen
implementation.
(module_extract_big_integer, module_make_big_integer): Reimplement
without using mpz_t in the interface.
* doc/lispref/internals.texi (Module Values): Adapt function
documentation and example. Stop mentioning GMP and EMACS_MODULE_GMP.
* test/data/emacs-module/mod-test.c: Don't define EMACS_MODULE_GMP or
EMACS_MODULE_HAVE_MPZ_T.
(memory_full, extract_big_integer, make_big_integer): New helper
functions, identical to example in the Info documentation.
(Fmod_test_nanoseconds, Fmod_test_double): Adapt to new interface.
