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.
* doc/lispref/lists.texi (Building Lists): Document it.
* etc/NEWS: Mention it.
* lisp/emacs-lisp/shortdoc.el (list): Demonstrate it.
* lisp/subr.el (ensure-proper-list): Add it.
* etc/NEWS: Describe the change.
* lisp/progmodes/etags-regen.el
(etags-regen-create-on-completion): New option.
(etags-regen-create-on-completion--set): New function.
(etags-regen-mode): Use it. Discussed in
https://lists.gnu.org/archive/html/emacs-devel/2026-03/msg00405.html
* doc/emacs/maintaining.texi (Looking Up Identifiers): Document
it.
* etc/NEWS (bindings): Mention it.
* etc/themes/newcomers-presets-theme.el (newcomers-presets): Add
it.
* lisp/progmodes/xref.el (xref-mouse-mode-map, xref-mouse-mode)
(global-xref-mouse-mode): Implement it.
* etc/themes/newcomers-presets-theme.el
(newcomers-presets-mode-enabled-local-modes): Interpret the
variable as a proper alist without duplicate keys.
(newcomers-presets-mode): Handle new structure.
* etc/NEWS: Fix capitalization and markup.
* lisp/emacs-lisp/ert.el (ert--should-error-handle-error): Prefer
any over cl-some where either will do.
* lisp/epa-file.el (epa-file--find-file-not-found-function):
Reindent.
(epa-file--error-add-context): Use correct variables. Add
docstring.
* lisp/ffap.el (ffap-machine-p):
* lisp/gnus/nnmaildir.el (nnmaildir--emlink-p): Prefer
string-equal-ignore-case over case fiddling.
* lisp/gnus/gnus-search.el (gnus-search-run-query): Fix typo in
error re-signaling.
* lisp/ibuffer.el (ibuffer-confirm-operation-on): Prefer string
search over regexp matching where either will do.
* test/lisp/vc/vc-tests/vc-tests.el
(vc-test--run-maybe-unsupported-function): Pacify unused
condition-case error variable warnings (bug#72212).
* lisp/vc/smerge-mode.el (smerge--refine-chopup-region):
Replace `beg..end` arg with an overlay.
(smerge-refine-regions): Replace `beg` arg with an overlay.
(smerge--refine-prepare-regions, smerge--refine-apply-diff-1):
New functions, extracted from `smerge-refine-regions`.
(smerge--refine-apply-diff): New function.
(smerge-refine-regions): Use them. Also delete temp files right after
running `diff` rather than after applying diff's output.
Define new functions to manipulate error descriptors and
add support for `signal` to *re*signal a previous error.
* src/eval.c (Fsignal): Make the second arg optional and document
the possibility of passing a whole error descriptor to re-signal it.
(signal_or_quit): Fix a few corner case issues when
DATA is `nil` and ERROR_SYMBOL is an error descriptor.
* lisp/subr.el (error-type-p, error--p, error-type, error-data)
(error-has-type-p, error-slot-value): New function.
* doc/lispref/control.texi (Handling Errors): Prefer "error descriptor"
to "error description". Use the new single-arg call to `signal` to
re-throw an error.
Document `error-type`, `error-data` and `error-slot-value`.
(Error Symbols): Document the new functions `error-type-p` and
`error-has-type-p`.
* lisp/recentf.el (recentf-exclude-ignored-extensions): Doc fix.
(recentf-exclude-file-by-extension-p): Rename from
`recentf-exclude-ignored-extensions'; all references changed.
Doc fix.
* etc/NEWS: Improve wording of the entry which announces the
above.
* lisp/recentf.el (recentf-exclude-ignored-extensions): New
user option.
(recentf-exclude-ignored-extensions): New function.
* etc/NEWS: Announce the new option and function.
(Bug#80347)
* lisp/vc/vc-dispatcher.el (vc-display-failed-async-commands):
New user option.
(vc-do-async-command): Use it.
* doc/emacs/vc1-xtra.texi (General VC Options):
* etc/NEWS: Document it.
* lisp/vc/vc-dispatcher.el (vc-do-command): Adjust message to
begin "Failed" not "Done" when command exits non-zero.
* lisp/vc/vc.el (vc-checkin): Adjust message to end in
"...failed" not "...done" when async command exits non-zero.
Walking the window tree is more reliable than using the selected
window. Implement 'get-mru-frame' on top of 'get-mru-frames'
using 'frame-use-time'.
* lisp/frame.el (frame-use-time): Change to walk the window tree
for the specified frame.
(get-mru-frames): New defun.
(get-mru-frame): Change to call 'get-mru-frames'.
* doc/lispref/frames.texi: Update documentation.
* etc/NEWS: Update announcement.
* lisp/subr.el (any): Rename from this ...
(member-if): ... to this. All uses changed.
(any): New function alias.
* lisp/emacs-lisp/cl-seq.el (cl-member-if): Mark obsolete.
* lisp/obsolete/cl.el (member-if): Delete obsolete function
alias.
* doc/lispref/lists.texi (List Elements):
* doc/misc/cl.texi (Lists as Sets):
* etc/NEWS: Document the change.
See initial discussion here:
https://lists.gnu.org/archive/html/emacs-devel/2026-02/msg00400.html
* lisp/international/characters.el (pairs): Populate
special-mirror-table.
* src/xdisp.c (produce_special_glyphs): Add two arguments. One
to identify the paragraph direction and one to identify that the
glyph is produced on the left hand side of a window. Mirror
glyph defined in the display table according to the new
special-mirror-table. Bidi mirroring always takes precedence.
(init_iterator, insert_left_trunc_glyphs, display_line)
(display_string): Call 'produce_special_glyphs' with new arguments.
(syms_of_xdisp) <special-mirror-table>: New char-table.
* etc/NEWS: Announce the change.
* lisp/subr.el (any): Rename from this ...
(member-if): ... to this. All uses changed.
Implement '&key KEY-FN' for backwards compatibility.
(any): New function alias.
* lisp/emacs-lisp/cl-seq.el (cl-member-if): Make an alias for
'member-if'.
* lisp/obsolete/cl.el (member-if): Delete obsolete function
alias.
* doc/lispref/lists.texi (List Elements):
* doc/misc/cl.texi (Lists as Sets):
* etc/NEWS: Document the change.
Not a bug report, but this is from the emacs-devel thread
"Tree-sitter: Transcendental things".
Improve tree-sitter thing navigation functions to handle the
case where there are multiple nested parsers in the
buffer. Previously these functions just grab the node at point
and are limited to the parser of that node. Now these functions
will thoUrouly search through all parsers that covers point
before giving up.
* doc/lispref/parsing.texi: Mention the change.
* lisp/treesit.el (treesit--some): New macro.
(treesit--thing-sibling): Use the new macro, add a new PARSER
parameter.
(treesit-thing-prev):
(treesit-thing-next): Add PARSER parameter.
(treesit-thing-at):
(treesit-navigate-thing): Use the new macro, add a new PARSER
parameter. Also pass the PARSER arg to recursive calls and
calls to treesit-thing-prev, etc.
* src/w32image.c (w32_gdip_export_frame): New function.
(gdiplus_init): Load 'GdipCreateBitmapFromHBITMAP' from GDI+ DLL.
* src/w32fns.c (Fw32_export_frame): New primitive.
* etc/NEWS: Announce the new primitive.
* src/keyboard.c (syms_of_keyboard):
<multiple_terminals_merge_keyboards>: New variable.
(read_event_from_main_queue): Mention it in message.
* lisp/cus-start.el: Make it customizable.
* src/callint.c (Ffuncall_interactively):
* src/keyboard.c (Frecursive_edit):
* src/minibuf.c (read_minibuf): When its value is true, don't
enter single-kboard mode (bug#79892).
* admin/notes/multi-tty:
* etc/NEWS: Document it.
* lisp/emacs-lisp/package.el (package-upgrade-keep-previous):
Rename user option to 'package-retention-policy'.
(package--policy-type): New constant for policy types.
(package-retention-policy): New option.
(package-review-policy): Use new type constant.
(package--review-p): Rename and generalise to
'package-matches-selector-p'.
(package-matches-selector-p): New function.
(package-upgrade, package-menu--mark-upgrades-1): Respect
'package-retention-policy'.
* doc/emacs/package.texi (Package Installation): Document new option.
* etc/NEWS: Update NEWS entry. (Bug#79957)
This change adds a conditional to keep old package versions on upgrade.
This allows users to keep running multiple Emacsen without a package
upgrade in one Emacs breaking another running Emacs.
* lisp/emacs-lisp/package.el (package-upgrade-keep-previous):
New boolean user option.
(package-upgrade): Use it.
(package-menu--mark-upgrades-1): Use it.
(package-menu--find-upgrades): Make consistent with new option.
* etc/NEWS: Announce it.
(Bug#79957)
* src/lisp.h (FOR_EACH_TAIL_INTERNAL): Divvy up the code into...
(FOR_EACH_TAIL_BASIC, FOR_EACH_TAIL_STEP_CYCLEP): ...these macros,
so that they can be used in more flexible ways.
* src/fns.c (internal_equal_1): Detect circular lists and call...
(internal_equal_cycle): ...this function that keeps comparing
but now detecting cycles in the other argument.
* lisp/emacs-lisp/testcover.el (testcover-after):
Remove unnecessary error handling.
* test/src/fns-tests.el (test-cycle-equal): Adapt and extend.
* test/lisp/emacs-lisp/testcover-resources/testcases.el
(testcover-testcase-cyc1): Remove case that no longer applies.
* doc/lispref/objects.texi (Equality Predicates): Update.
* etc/NEWS: Announce.
