Change suggested by Richard Stallman in:
https://lists.gnu.org/r/emacs-devel/2026-06/msg00232.html
* lisp/electric.el (electric-indent-actions, electric-indent-chars)
(electric-indent-functions, electric-indent-inhibit)
(electric-layout-rules, electric-layout-allow-duplicate-newlines)
(electric-layout-allow-in-comment-or-string, electric-quote-comment)
(electric-quote-string, electric-quote-chars, electric-quote-paragraph)
(electric-quote-context-sensitive, electric-quote-replace-double)
(electric-quote-replace-consecutive, electric-quote-inhibit-functions)
(electric-quote-mode): Clarify in doc strings the effects, from the
user's point of view, of electric-indent-mode's, electric-layout-mode's,
and electric-quote-mode's user-facing options.
* lisp/emacs-lisp/edebug.el (edebug-prepare-margin): New
function to set up left margin for Edebug.
(edebug--display-1): Use it.
* src/xdisp.c (display_line): Try to use left margin to display
overlay arrow and fallback to the text area otherwise.
* doc/lispref/display.texi (Overlay Arrow):
* doc/lispref/edebug.texi (Using Edebug):
* doc/emacs/building.texi (Debugger Operation): Document the
change.
* etc/NEWS: Announce the change.
* src/editfns.c (Freplace_region_contents): If the temporary
storage is so large that malloc fails, do not signal an error.
Instead, fall back on destructive replacement.
We expect 'compareseq' to call 'buffer_chars_equal' very often, so
it's worth it to use some memory and make it as fast as possible.
* src/editfns.c (EXTRA_CONTEXT_FIELDS): Drop buffer, beg, and unibyte
fields; add arrays of character codes stored as C ints.
(Freplace_region_contents): Generate such arrays from the two regions
to be compared.
(buffer_chars_equal): Compare array elements instead of buffer
characters.
* lisp/help.el (temp-buffer-resize-mode): Fix doc-string - a
window can be resized now even if it has shown another buffer in
between (Bug#81207).
(resize-temp-buffer-window): Resize window if and only if its
buffer is the buffer it has shown initially (Bug#81207).
These functions were removed in ab36f58922
during the reorganization of package.el as part of Bug#80079.
Also add a simple test for these functions to avoid future regressions.
See also discussion at
https://lists.gnu.org/archive/html/emacs-devel/2026-06/msg00149.html.
* lisp/emacs-lisp/package.el (package-versioned-builtin-packages,
package-builtin-package-version): Restore.
* lisp/emacs-lisp/package-activate.el: Remove lingering comments.
* test/lisp/emacs-lisp/package-tests.el
(package-test-builtin-package-info): Add.
* lisp/emacs-lisp/package.el (package--dependency-p): Add new
function to check if a package is a dependency.
(package-delete): Prompt user if it is OK to uninstall a package
that serves as a dependency, but where the package has multiple
installations. This also means that we don't de-select a
selected dependency if there are multiple installations.
(Bug#81082)
Make 'outline-search-function' a user option with named choices for
its predefined values, so users can configure it via Customize.
Preserves existing docstring and runtime semantics (bug#81053).
* lisp/outline.el (outline-search-function): Convert to defcustom.
* etc/NEWS: Announce it.
Add outline-search-from-regexp generic helper (bug#80887)
Minor modes and third-party packages that customize 'outline-regexp'
typically need an 'outline-search-function' implementation that
searches for 'outline-regexp' anchored at beginning of line. Without
a generic helper, each such user reinvents the function locally.
Add it to outline.el.
This pattern has been in production use as a default value of
'outline-search-function' (set via 'setq-default') without issues.
* lisp/outline.el (outline-search-from-regexp): New function.
* etc/NEWS: Announce it.
* doc/emacs/text.texi (Outline Visibility): Document the new
'outline-show-entry-and-parents' command and its 'C-c C-e' keybinding.
(Foldout): Update the Foldout example to reference the new command
(bug#79286).
The following commits were skipped:
2c6a03b08c Fix fontification in short unintegrated changes logs (bug...
7b23e17eb8 * lisp/vc/vc.el (vc-log-remote-unintegrated): Set vc-log-...
f89ff62367 Extend Tramp external operations
4dea6ea36b markdown-ts-mode: fix duplicated menu entries (bug#81201)
9cad2da66e ; Fix last change.
cd84bd6a0c vc-dir-recompute-file-state: Change directory to DEF-DIR
47bdbc8d85 Restore "interactive" when describing functions
1a5d9a4be3 Inhibit follow-link via `mouse-1' on the tab-bar (bug#81036)
c94d58ddbf Fix the tab close button appearance when clicking (bug#76...
a21614d4d6 ; Skip one vc-dir test on MS-Windows
abddd2075a ; Fix last change to vc-dir-recompute-file-state.
89bda8736a Install images with info documentation (bug#81204)
466789b511 vc-dir-recompute-file-state: Return nil state for nonexis...
Do not merge to master.
* lisp/vc/vc.el (vc--shortlog): New variable.
(vc-print-log-internal):
* lisp/vc/vc-git.el (vc-git-log-view-mode):
* lisp/vc/vc-hg.el (vc-hg-log-view-mode): Use it.
* lisp/vc/vc.el (vc-log-view-type): Replace with ...
(vc-log-view-types): ... this. All uses changes.
(vc-log-remote-unintegrated): Newly pass a value for the log
view types. This matters for Hg repositories.
(vc-print-log-internal): Ensure log view types always contains
either 'long' or 'short'.
(vc-root-log-incoming, vc-root-log-outgoing, vc-log-search):
* lisp/vc/vc-dir.el (vc-dir--count-outgoing): Pass both
log-incoming/log-outgoing/log-search and short/long for the log
view types. This is necessary because these functions don't
call vc-print-log-internal. This will need to be refactored
when implementing the new fileset-specific vc-log-incoming and
vc-log-outgoing.
This change helps ensure that work buffers are "clean" for reuse
by arbitrary callers.
* lisp/emacs-lisp/subr-x.el (work-buffer--release): Call
'kill-all-local-variables' with KILL-PERMANENT 'reset.
* src/buffer.c (Fkill_all_local_variables): If KILL-PERMANENT is
'permanent-local, kill all locals without prejudice. If
KILL-PERMANENT is 'reset, also call 'reset_buffer'.
* test/lisp/emacs-lisp/subr-x-tests.el
(subr-x-with-work-buffer-locals-killed): New test.
* doc/lispref/variables.texi: Update 'kill-all-local-variables'
documentation.
* etc/NEWS: Announce the change to 'kill-all-local-variables'.
This ensures defcustom ':set' functions are invoked. The new
user option 'setopt-local-type-mismatch' can prompt users to
accept or discard type-mismatched values or to always accept or
discard such values.
* lisp/cus-edit.el (setopt-local-type-mismatch): New defcustom.
(setopt--set-local): Consult setopt-local-type-mismatch.
* lisp/files.el (hack-one-local-variable): Detect a custom
variable and call 'setopt--set-local'.
* etc/NEWS: Announce the change.
This a workaround for the release branch due to the work-buffer
pool being insufficiently sanitized.
* lisp/textmodes/markdown-ts-mode.el
(markdown-ts--run-command-in-code-block): Reset 'mark-active'.
Do not merge to master. (Bug#81218) (Bug#81111)
When a subtree is at the end of the buffer and followed by a
newline, flagging the subtree as invisible incorrectly swallows
the final newline.
* lisp/outline.el (outline-end-of-subtree): Check for eobp
to ensure the function steps back over the final newline when
the subtree ends at the end of the buffer (bug#80917).
* lisp/outline.el (outline-mode-prefix-map):
Rebind 'C-e' from 'outline-show-entry'
to 'outline-show-entry-and-parents'.
(outline-mode-menu-bar-map): Use 'outline-show-entry-and-parents'
instead of 'outline-show-entry'.
(outline-isearch-open-invisible): Use the new command instead of
the 'outline-show-entry' primitive. This prevents unintended
side effects for packages relying on the base API and avoids the
'isolated item' effect.
(outline-show-entry-and-parents): New function to climb the tree,
reveal parent headings, and unfold the current entry (bug#79286).
* doc/misc/tramp.texi (New operations): Extend.
* lisp/net/tramp.el (tramp-file-name-for-operation-external):
Extend docstring.
(tramp-file-name-for-operation): Make more use of
`tramp-file-name-for-operation-external'.
(tramp-add-external-operation): Support ARG-TYPE `tramp-file-name'.
* test/lisp/net/tramp-tests.el (tramp-test49-external-backend-function):
Extend test.
* lisp/vc/vc-dir.el (vc-dir-recompute-file-state): Change
directory to DEF-DIR before calling into the backend.
* test/lisp/vc/vc-tests/vc-test-misc.el
(vc-test-vc-dir-on-symlink): Test that the file has the right
state.
