* lisp/erc/erc-track.el (erc-track--select-mode-line-face): Check
whether ranked faces in the message appear in the value of the option
`erc-track-faces-normal-list' rather than repeatedly checking if the
current nominee does, usually the highest ranked face in the message.
Failure to do so caused ERC to treat faces absent from the option's
value as being present and thus eligible to replace ranked faces in the
mode line segment. This bug was introduced in ERC 5.6 and is also part
of 5.6.1. (Bug#80659)
Copyright-paperwork-exempt: yes
* lisp/erc/erc.el (erc--warn-once-before-connect): Don't call
`erc-display-message' from insertion hooks because doing so places an
unnecessary burden on the caller to preserve the insertion marker and
"msg prop" environment.
* etc/NEWS
(Changes in Specialized Modes and Packages in Emacs 31.1):
Announce new user option whitespace-global-mode-buffers (bug#79230).
* lisp/whitespace.el (whitespace-global-modes): Improve docstring
grammar.
(whitespace-global-mode-buffers): Make default value match *scratch*
exactly for backward compatibility. Fix custom :type.
(whitespace-enable-predicate): Prefer any over seq-find.
* src/xterm.c [!USE_GTK] (x_update_frame_user_time_window): When
replacing _NET_WM_USER_TIME with a new _NET_WM_USER_TIME_WINDOW and
the frame has requested no-focus-on-map, ensure _NET_WM_USER_TIME is
zero also on the new _NET_WM_USER_TIME_WINDOW.
(x_make_frame_visible) [!USE_GTK]: Don't overwrite _NET_WM_USER_TIME
before mapping a frame that has requested no-focus-on-map, and whose
_NET_WM_USER_TIME should thus remain zero (bug#80525).
* lisp/tab-bar.el (find-file-read-only-other-tab): Pass the
function 'find-file-other-tab' directly to
'find-file--read-only' (Bug#80630).
Copyright-paperwork-exempt: yes
* lisp/dabbrev.el (dabbrev-capf): Return an empty table rather than
signaling an error when there are no completions.
The completion UI already takes care of emitting a message like
"No match".
The fields of the new struct are what the global variables
charset_table, charset_table_size, charset_table_used, and
charset_attributes_table used to be. The struct should make it clearer
that those fields must be kept in sync.
* src/charset.h (struct charset_table): New struct.
(charset_attributes_getter): Adjust accordingly.
* src/charset.c (charset_table): Change type to struct charset_table.
(charset_table_size, charset_table_used, charset_attributes_table):
Moved to the struct.
(Fdefine_charset_internal, Ffind_charset_region, Ffind_charset_string)
(shrink_charset_table, syms_of_charset): Adjust to struct charset_table.
* src/pdumper.c (dump_charset, dump_charset_table): Adjust to struct
charset_table.
Determining the best size for a static array seems difficult; so
allocate it dynamically.
* src/charset.c (CHARSET_TABLE_INIT_SIZE): New constant.
(syms_of_charset): Malloc charset_table here.
(charset_table_init): Removed.
(shrink_charset_table): New function.
(Fclear_charset_maps): Call it.
* src/charset.h (charset_table_init): Removed.
(charset_attributes_getter): Add an assertion.
* src/pdumper.c (dump_charset_table): Assert that charset_table_size ==
charset_table_used.
This simplifies the GC code, as this was the only field in the charset
struct that referenced the GC heap. Without it, we no longer need to
trace the charset_table.
* src/charset.h (struct charset.attributes): Removed.
(charset_attributes_getter): New helper.
(CHARSET_ATTRIBUTES): Use it.
* src/charset.c (charset_attributes_table): New.
(Fdefine_charset_internal): Place attrs in charset_attributes_table.
(syms_of_charset): Initialize charset_attributes_table.
(mark_charset): Deleted.
* src/pdumper.c (dump_charset): Skip attributes field.
* src/lisp.h (mark_charset): Deleted.
* src/alloc.c (garbage_collect): mark_charset no longer needed.
Eliminate 'vtable--limit-string' in favor of the more efficient
'truncate-string-pixelwise'. Remove extraneous pre-measurement
calls to 'string-pixel-width' and ellipsis concatenation as
'truncate-string-pixelwise' does both.
The 'make-vtable' 'ellipsis' keyword can be a string to override
the default returned by 'truncate-string-ellipsis'.
* lisp/emacs-lisp/vtable.el (vtable--ellipsis): New defun.
(vtable-insert-object, vtable--insert): Use 'vtable--ellipsis'.
(vtable--insert-line, vtable--insert-header-line): Call
'truncate-string-pixelwise' instead of 'vtable--limit-string'.
(vtable--limit-string): Remove function.
* test/lisp/emacs-lisp/vtable-tests.el
(test-vtable--limit-string-with-face-remapped-buffer): Remove
test, obsoleted by misc-test-truncate-string-pixelwise.
* doc/misc/vtable.texi: Document that :ellipsis can be a string.
* lisp/files.el (find-sibling-file-search): Following expansion
of each EXPANSION, advance the search start position to reflect
the actual length of the expanded text (the updated string), not
the length of the "\\([&0-9]+\\)" (the string before expansion).
(Bug#80636)
Copyright-paperwork-exempt: yes
This provides limited support for window-specific overlay properties.
To complete it, we still need to add support for it to
`next/previous-single-char-property-change`.
* lisp/emacs-lisp/cursor-sensor.el (cursor-sensor--intangible-p):
Add `window` argument.
(cursor-sensor-tangible-pos, cursor-sensor--detect):
Pass `window` argument to the functions
looking for overlay properties.
On some profiles (after disabling syntax and refined
fontification), this was taking >90% of the time to fontify a buffer.
* lisp/vc/diff-mode.el (diff--git-preamble-overlay)
(diff--git-footer-overlay): New variables.
(diff--git-preamble-end, diff--git-footer-start): Use them to cache
the result.
See https://lists.gnu.org/archive/html/emacs-devel/2026-03/msg00567.html.
* test/lisp/use-package/use-package-tests.el (use-package-test-normalize/:vc):
Drop or change expected to match change that interprets a string
argument to :vc in the same manner as 'package-vc-install.
* lisp/progmodes/elisp-mode.el (elisp-fontify-symbol): Mark
the 'cursor-sensor-functions' property as 'rear-nonsticky',
to adapt to 'cursor-sensor-mode' taking into account
property stickiness since f4a1c00656. See also bug#80593.
* lisp/whitespace.el (whitespace-global-mode-buffers): New custom
option.
(whitespace-enable-predicate): Use it.
(whitespace-global-modes): Refer to the new option.
* doc/lispref/windows.texi (Window Sizes):
* src/window.c (Fwindow_body_height, Fwindow_total_height)
(Fwindow_total_width, Fwindow_body_width): Clarify that window
dimensions are returned in canonical columns and lines.
(Bug#80620)
This minor mode configures hs-minor-mode to use
indentation-based folding.
* lisp/progmodes/hideshow.el (hs-hideable-block-p): New
function.
(hs-indentation-respect-end-block): New option.
(hs-indentation--store-vars): New variable.
(hs-cycle-filter, hs-get-first-block-on-line, hs-get-near-block)
(hs-find-block-beg-fn--default): Adapt code to use
'hs-hideable-block-p'.
(hs-block-positions): Update.
(hs-indentation-mode): New minor mode.
* doc/emacs/programs.texi (Hideshow): Update documentation.
* etc/NEWS: Announce changes
* test/lisp/progmodes/hideshow-tests.el: Add 'require'.
(hideshow-check-indentation-folding): New test.
Eliminate an annoying event-loop delay after dropping into an
Emacs window.
* src/nsterm.m: ([EmacsView performDragOperation:]): Kick the
event loop after posting the DRAG_N_DROP_EVENT.
* lisp/simple.el (blink-matching-paren-offscreen): Inherit from
show-paren-match face.
(blink-paren-open-paren-line-string): Add blink-matching-paren-offscreen
face properties to opening paren instead of replacing original
fontification.
* lisp/paren.el (show-paren-context-when-offscreen): Mention
blink-matching-paren-highlight-offscreen in docstring.
* src/widget.c (EmacsFrameRealize): Assign bit_gravity, and use
the value of NorthWestGravity which matches the GTK3 behavior,
and the general intuition that window's contents should move
with its top-left corner. The result is that the frame is not
blinking during resizing (bug#80369).
* src/xfns.c (x_window) [!USE_X_TOOLKIT]: Change bit_gravity from
StaticGravity to NorthWestGravity as well, to match the others.
This makes :vc behave more like 'package-vc-install'.
* lisp/use-package/use-package-core.el (use-package-normalize/:vc):
Translate :vc arguments that are just a string into a minimal
package specification containing only a :url field, thus
preventing a type error down the line.
