; * doc/misc/ert.texi (erts files): Improve indexing.

(cherry picked from commit 1f998d11a585a9915cc6e8b67050dc1bb9191107)

Fix 'Skip' behavior in erts files (bug#76839)

* lisp/emacs-lisp/ert.el (ert-test--erts-test): Fix 'Skip'
behavior in erts files, so only the test case where it is
specified is skipped.
* test/lisp/emacs-lisp/ert-tests.el (ert-test-erts-skip-one)
(ert-test-erts-skip-last): Add test cases.

(cherry picked from commit d164116aa52b10bdfe8242dd1089406d4e557f32)

Improve native--compile-skip-on-battery-p

* lisp/emacs-lisp/comp-run.el
(native--compile-skip-on-battery-p): Look at %L, %b and %B
format characters.  Add commentary.

(cherry picked from commit f180e4c9cb676e771acdaed7b0fd76c1c83dd485)

(decode_coding): Avoid nested *-change-functions (bug#78042)

* src/coding.c (decode_coding): Avoid nested *-change-functions (bug#78042).

* test/src/editfns-tests.el (sanity-check-change-functions-before)
(sanity-check-change-functions-after): Record notifications in
`sanity-check-change-functions-op`.
(sanity-check-change-functions-with-op): Don't rely on
`sanity-check-change-functions-op` always holding only the `op`.
(sanity-check-change-functions-errors): Include the sequence of
notifications in the error info.
(editfns-tests--before/after-change-functions): Add tests for (bug#78042).

(cherry picked from commit 9048fcf22c3ec3b5cc77dbb98993a53f5f9b7cd5)

; Skip commit 99ca41b6ef300653a0d15b73a0c0d446a9a9e059

Fix completion boundaries for TRAMP file names

Previously, we assumed (roughly) that substitute-in-file-name
always returns a suffix of the original string.  But
substitute-in-file-name on "/ssh:user@host:/~/" returns
"/ssh:user@host:~/", preserving the TRAMP magic prefix.  Weaken
the assertion in completion--sifn-boundaries to allow this; the
new assertion is more clear about the property we care about,
anyway.

* lisp/minibuffer.el (completion--sifn-boundaries): Weaken
assertion slightly.

* test/lisp/net/tramp-tests.el (tramp--test-emacs31-p)
(tramp--split-on-boundary)
(tramp-test51-file-name-completion-boundaries): Add.

(cherry picked from commit d56d7ca35cf3c0185fe42bf7f64e3aa6a5281e3e)

; * lisp/battery.el (battery-status-function): Doc fix.

(cherry picked from commit 52183c9596cc4d346c872ad81ecbcf695e636f0b)

; * lisp/progmodes/cc-fonts.el (cl-delete-duplicates): Declare.

(cherry picked from commit 3f8f738d1d6b583415aa5d5584299794838316ca)

Move documentation of this-command buffer display condition entry

* doc/lispref/buffers.texi (Buffer List): Document this-command
buffer display condition entry.
* doc/lispref/windows.texi (Choosing Window): Give an example of
using this-command buffer display condition entry in
display-buffer-alist.
(Buffer Display Action Alists):
* lisp/window.el (display-buffer): Delete documentation of
this-command buffer display condition entry from these locations
because it is not a buffer display action alist entry.
* lisp/subr.el (buffer-match-p): Update cross reference.

(cherry picked from commit d32ab06145a6055f5e39d348bddba72c3f705d75)

New user option native-comp-async-on-battery-power

* lisp/emacs-lisp/comp-run.el
(native-comp-async-on-battery-power): New option.
(battery-status-function): Declare.
(native--compile-skip-on-battery-p): New function.
(comp--run-async-workers): Call it.
* etc/NEWS: Announce the new option.

(cherry picked from commit 6b11687555cdd1d6896bad5eb09af217b28d6076)

; * etc/DEBUG: Grammar fix.

(cherry picked from commit dc3e79a80ee5b958ab0f6ffc6861fb5ac9418bab)

Embed html, yaml and toml in markdown-ts-mode.

* lisp/textmodes/markdown-ts-mode.el (markdown-ts--treesit-settings):
Use @italic on the whole 'block_quote'.
(markdown-ts-outline-predicate): New function.
(markdown-ts--range-settings): Embed 'yaml' in host 'markdown',
embed 'toml' in host 'markdown', embed 'html' in host 'markdown-inline',
and use local 'html_block'.
(markdown-ts-setup): Append html/yaml/toml to treesit-font-lock-settings
and treesit-font-lock-feature-list when their grammars are ready.
(markdown-ts-mode): Set comment-start/comment-end.
Set treesit-outline-predicate to 'markdown-ts-outline-predicate'.

* lisp/textmodes/toml-ts-mode.el
(toml-ts-mode--font-lock-feature-list): New variable.
(toml-ts-mode): Use it.

* lisp/textmodes/yaml-ts-mode.el
(yaml-ts-mode--font-lock-feature-list): New variable.
(yaml-ts-mode): Use it.
(yaml-ts-mode--outline-nodes): New variable.
(yaml-ts-mode--outline-predicate): Use it.

* lisp/treesit-x.el (liquid-generic-ts-mode):
Use 'treesit-ready-p' on optional 'yaml' grammar.
Merge 'yaml-ts-mode--font-lock-feature-list'.

(cherry picked from commit 1b0fe9b387ee4021b86f6fb120f5f7ed05367a9d)

Improve elixir-ts--thing-settings.

* lisp/progmodes/elixir-ts-mode.el (elixir-ts--thing-settings):
Add extra grouping "keywords" to named sexp nodes.
Add "," to anonymous sexp nodes.  Use bos/eos.

* lisp/progmodes/ruby-ts-mode.el (ruby-ts-mode):
Use bos/eos for anonymous sexp nodes for better disambiguation.

* test/lisp/progmodes/heex-ts-mode-tests.el
(heex-ts-mode-test-indentation): Skip the test when 'elixir' is
missing since 'heex-ts-mode' depends on the 'elixir' grammar.

(cherry picked from commit cd557d6f6480cae81c39a451b2a2aaee720ba985)

; * lisp/international/mule.el (define-coding-system): Doc fix.

(cherry picked from commit 7d02ffe87b401048fe10958cdc463f3bf7676ffd)

Avoid adding duplicate items to 'treesit-language-source-alist'.

* lisp/textmodes/mhtml-ts-mode.el:
* lisp/progmodes/php-ts-mode.el:
Use 'add-to-list' on items in language-source-alist
that should check for duplicate items.

* test/infra/Dockerfile.emba: Move multi-language mhtml-ts-mode and
php-ts-mode to the end to give their dependent grammars a lower priority.

* test/lisp/progmodes/js-tests.el (js-ts-mode-test-indentation):
Skip the test when 'jsdoc' is missing since 'js-ts-mode' depends
on the 'jsdoc' grammar.

(cherry picked from commit 5684a3808677fb701833c83325cd3bc8de475561)

; Skip commit 311ea96ccfae813f5cb55a5bc9a13be19c0a4127

Implement C23 features:

Improve the handling of #error and #warning in C and C++ Modes.

* lisp/progmodes/cc-engine.el (c-looking-at-c++-attribute)
(c-enclosing-c++-attribute, c-forward-sws, c-backward-sws):
Handle attributes in C as they have been handled in C++.
(c-forward-align-clause-throw-if-invalid): New macro.
(c-forward-type): Handle alignas, alignof, and _BitInt, putting
a catch block around most of the function to catch invalid uses
of these new keywords.
(c-in-id-arglist): New function.
(c-forward-decl-or-cast-1): Recognize a "maybe" type identifier
as a type in arglists when there is no parameter identifier
associated with it.

* lisp/progmodes/cc-fonts.el (c-font-lock-cpp-messages): New
function.
(c-cpp-matchers): Move the handling of "invalid" comment
delimiters outside of the block handling CPP directives.
Remove the inline handling of #error and #warning, using the
new function c-font-lock-cpp-messages instead.
(c-get-fontification-context): Handle alignof, alignas,
_BitInt.
(c-font-lock-declarations): Adapt fontification of K&R
parameters to the C23 nameless parameter scheme.

* lisp/progmodes/cc-langs.el (c-has-quoted-numbers)
(c-stmt-boundary-skip-chars)
(c-recognize-post-brace-list-type-p, c-modifier-kwds)
(c-constant-kwds): Handle C the same as the existing C++
handling.
(c-cpp-message-directives-re, noncontinued-line-end)
(c-cpp-messages-re, c-cpp-message-match-no): New
c-lang-consts/vars.
(c-cpp-include-directives): New directive embed.
(c-cpp-expr-directives): New directives elifdef, elifndef.
(c-primitive-type-kwds): New types, _Decimal*, bool, char*_t,
nullptr_t.
(c-typeof-kwds): New keyword typeof_unqual.
(c-type-with-paren-kwds, c-type-with-paren-key): New
c-lang-const/vars.
(c-type-modifier-with-parens-kwds)
(c-type-modifier-with-parens-key, c-type-internal-paren-kwds)
(c-type-internal-paren-key): New c-lang-const/vars.
(c-type-modifier-prefix-kwds, c-type-start-kwds): Amend with
the above new c-lang-consts.
(c-no-type-with-equals-kwds, c-no-type-with-equals-key): New
c-lang-const/vars.
(c-modifier-kwds): Add constexpr, auto, and thread_local to the
C value.
(c-paren-nontype-kwds): Add static_assert to the C value.
(c-constant-kwds): Add nullptr to the C value.
(c-regular-keywords-regexp): Include c-type-with-paren-kwds.
(c-recognize-nameless-type-decls): New c-lang-const/var.

* lisp/progmodes/cc-mode.el (c-leave-cc-mode-mode): Also clear
c-digit-separator properties.

(cherry picked from commit 8ddb8b0e45f150a5866c86af8ed2054b792761ff)

; Fix last change

(cherry picked from commit b589fa9e23d896ce76b64016e0a5750f2131c393)

; Fix wording of recently added documentation

* lisp/window.el (display-buffer):
* doc/lispref/windows.texi (Buffer Display Action Alists): Fix wording.

(cherry picked from commit 75870a7ad184be7a8fe0a8e0497665a3b04cd6fa)

; Fix sectioning of recent changes in the Emacs user manual

* doc/emacs/maintaining.texi (VC-Aware Project Backend):
* doc/emacs/emacs.texi (Top): Fix recent changes.

(cherry picked from commit 5cdcebc2ad0e55fa7b7e938a6860505a13f408bf)

New this-command buffer display action alist entry

* lisp/subr.el (buffer-match-p): New this-command cons cell
condition to implement new this-command buffer display action
alist entry (bug#78082).
* lisp/window.el (display-buffer):
* doc/lispref/windows.texi (Buffer Display Action Alists):
* etc/NEWS: Document the new buffer display action alist entry.

(cherry picked from commit 343f0c44f35c41b93c66f67da0ddeceb98bbdb93)

; Skip commit 7ae86074231159647d9bcb579dc5ea5a569acf0d

Improve treesitter tests on emba

* test/infra/Dockerfile.emba (emacs-tree-sitter): Print language
versions.

* test/infra/gitlab-ci.yml (.job-template): Pass ${http_proxy},
${https_proxy} and ${no_proxy} to the docker call.
(.tree-sitter-template): Add some dependencies.

(cherry picked from commit ab67f684e92489da84bc6bb559e0d2dc0456d949)

; Skip commit b9632a9049d07de3a0d6f0ae005a28b38825ff82

Improve python-ts-mode fontification (bug#78129)

Fontification based on selectors & code-conventions:

- Lambda parameters: variable declarations
- For in statements: variable declarations
- Import statements: variable declerations
- Constants: All upper case alphanumerical identifiers
- Types: CamelCase alphanumerical identifiers
- Enums: Enum-values as constants.

* lisp/progmodes/python.el:
(python--treesit-settings): Improve queries.

(cherry picked from commit 2964d51c9cd9b55e60901069c378d0e8277d60f9)

Improve csharp-ts-mode fontification (bug#78130)

Improves:
- fontification of generic types with namespace-prefixes
- function-call parameters
- variable use in string interpolation
- implicitly typed parameters in lambda-expressions
- index-expressions
- variables used in return-statements
- variables used in binary expressions

* lisp/progmodes/csharp-mode.el:
(csharp-ts-mode--font-lock-settings): Improve queries.

(cherry picked from commit 6c35ae082770c1bb875e870f83c3eff4a3197283)

; Skip commit 15e77fe03a816e839a6af326cb7837518de0fd23

Fix compilation-mode matches for csharp-mode (bug#78128)

* lisp/progmodes/csharp-mode.el:
(csharp-compilation-re-dotnet-error):
(csharp-compilation-re-dotnet-warning): Ignore leading whitespace.

(cherry picked from commit ebeaa728b66d0674fa499bf0bf2ae573ec9984aa)

; Skip commit 1acb6454329ab66ef9f4b3f4a1937a7ab38121f7

; Skip commit eb6a50d3e3f3c348a7fbdb2dfcbf87425ca6e5cd

; Skip commit e1e052501b38e486343fc04fb5f5a6e29b3bcd11

(cl-types-of): Speed up by caching more of its work

* lisp/emacs-lisp/cl-types.el (cl--type-parents): Make it a proper function.
(cl--type-children): Use `cl--class-children` and make it a `defsubst`.
(cl--type-dag): η-reduce and make it a `defsubst`.
(cl--type-undefine): Also reset `cl--type-error`.
(cl--type-deftype): Modify `cl--type-list` atomically so we never need
to restore it upon error.  Don't test bogus parent here.
(cl-deftype2): Test bogus parent here instead.  Also, better preserve
the declarations for the lambda.
(cl-types-of): Do less uncached work.

(cherry picked from commit 4323ff209f2f73ca4e6d389de69eb310988c0b1f)

lisp/emacs-lisp/cl-types.el: New file

* test/lisp/emacs-lisp/cl-types-tests.el: Also, new file.

(cherry picked from commit dfbeb7478ecd817f888927154858c380fb60390f)

Minor cleanups

Eglot: tweak previous change (clear Flymake 'Wait' state)

When we don't have anything to give to Flymake, we still want to
signal we're alive so the mode-line doesn't show a confusing
'Wait'.

* lisp/progmodes/eglot.el (eglot--report-to-flymake): Clear 'Wait'
state.

(cherry picked from commit dd5ae0f3ba56e762ae1265b0cb0fe9f2a28281ec)

; Skip commit d6755ff1e146979731689585dc25a6e61fb4000e

; Skip commit ef5c7ec4990a603ff476e2266c31ea055ac0b609

; Skip commit 4226eb2b20408ba49787195bbc59bb0066c9c9e4

; Skip commit b81f937e60b2fb499820e708d1ff4ba349df5f1a

Fix typo in bug#19867 correction (CC Mode indentation bugs)

* lisp/progmodes/cc-align.el (c-lineup-item-after-paren-at-boi):
Replace an erroneous skip-syntax-backward with
skip-chars-backward.

(cherry picked from commit 766adfa8a731683c221630c3fee5aa5ace22428e)

Fix the match data in elisp-outline-search.

* lisp/progmodes/elisp-mode.el (elisp-outline-search):
Add 'save-match-data' since 'syntax-ppss' garbles the match data.

(cherry picked from commit b06046edcfceb6ba426880444894373f21ea4a79)

* test/infra/Dockerfile.emba: Avoid duplication of tree-sitter data.

Require ts-mode files in order to add their tree-sitter grammar sources
to 'treesit-language-source-alist'.

(cherry picked from commit 85cd476a1408d2d87714d076144f9ad11cf3f31c)

Add python tree-sitter grammar data to 'treesit-language-source-alist'.

* lisp/progmodes/python.el (python-ts-mode):
Use 'treesit-ensure-installed' when it's fboundp.

(cherry picked from commit dbd168823794ef2173bb6eb894174bc0c1685cd9)

; Skip commit 1284b6f1187be768e1af013339d7a228c6a8e84d

; Skip commit 826a83112964189b6049e288dbe8344a7362f29c

; Skip commit b2904e064d023c3a6d19af58ffd8ce21342c794c

; Skip commit c43964d27aacc05be9cd6f42a1d8295a9b661551

; Skip commit 0fc6bd5c76a5e55401cf086e3b8fc6ed8eb32b94

; Skip commit 1143a5273860fd6402aaf3fb6e1df39c31a3cc41

; Skip commit 3044d16b81b80e79339faf30560d4db4c59b3a97

; Skip commit 573b377e8c57d60ea4fa881641ed0f851858fe8e

; Skip commit 215246108e1d35f5172c76549c71ffae901ab840

; Skip commit 3bc1c13661a334fedd8967188715cf85ef2af992

; Skip commit fcaec1ff0d6be18d4fa3682401ced30741be6243

; Skip commit 44069711e87c3a56f36a917ee46d673f77e0c733

; Skip commit 30b9694f2af20ccb25b4994a71b805f597448630

; Skip commit e760e580191dd82890f8653f5538a2a7378ff26d

; Improve last change

* lisp/international/fontset.el (script-representative-chars):
Improve last change by adding more representative chars.

(cherry picked from commit cb701f95c61e95298fb7d06f9f98f017dadfbcfe)

Improve support for Avestan, Old Turkic, and Chakma

* lisp/international/fontset.el (script-representative-chars,
  setup-default-fontset): Add support for Avestan, Old Turkic, and Chakma.

(cherry picked from commit 9c98b6cbd37fb3d73424702b8a175e5f323b1c2d)

Fix compilation errors in emacsclient.c with MinGW GCC 15

* lib-src/emacsclient.c (set_fg, get_wc): Declare using actual
function signatures.
(w32_give_focus): Cast return value of 'GetProcAddress' to correct
pointer types.  (Bug#78160)

(cherry picked from commit 6c2aaedfcebb310e0c948d6972f90cc7d96193f9)

cperl-mode-map: Don't bind C-j

* lisp/progmodes/cperl-mode.el (cperl-mode-map): Don't bind C-j.
The default global mode bindings will DTRT depending on whether
or not electric-indent-mode is on.

(cherry picked from commit 606e7b73bacb282d3de0d626c9c62281cde4ea57)

; * etc/DEBUG: Add link to GCC bug #78685.

(cherry picked from commit d56e5ba97ee49bc7d82ad21e35ac8fbc21a0b0e1)

Fix custom type of 'flymake-show-diagnostics-at-end-of-line'

*
lisp/progmodes/flymake.el (flymake-show-diagnostics-at-end-of-line):
Add 'fancy' value to custom type.

* etc/NEWS: "variable" -> "user option".

(Bug#78148)

(cherry picked from commit 9b560a54c3b5c04c683124db44b53ae005b36729)

; Fix key notation in Introduction to Emacs Lisp

* doc/lispintro/emacs-lisp-intro.texi (Typing Lists)
(Note for Novices): Fix notation of 'M-C-\'.  (Bug#78153)

(cherry picked from commit 80cbd1e31cc360ee26d462e62a253f8b54807a65)

; Skip commit b1407b41a16c4a3ec15c88be91ba0ae1e65c212e

* doc/misc/efaq-w32.texi (Location of init file): Fix typo.

; * lisp/files.el (revert-buffer-restore-functions): Doc fix (bug#78124).

(cherry picked from commit 1224e5fd961ba53a5d6aba46e3c92a2fd047a165)

Ignore parens in strings for outline headings in emacs-lisp-mode.

* lisp/outline.el (outline-font-lock-keywords): For non-nil
outline-search-function return a lambda that calls the function,
then sets the match data to the end of the line that is equivalent
to adding ".*" in the regexp.  Then search functions don't need to
match ".*" themselves.

* lisp/progmodes/elisp-mode.el (elisp-outline-search):
New function to skip leading parens in strings when searching
for outline headings.
(emacs-lisp-mode): Set buffer-local 'outline-search-function' to
'elisp-outline-search'.
https://lists.gnu.org/archive/html/emacs-devel/2025-04/msg00934.html

(cherry picked from commit 746a3cb3143194436c4a1a63d26aac890c1a705f)

Fix invalid search bound in 'search-within-boundaries'.

* lisp/isearch.el (search-within-boundaries): Don't go over BOUND.

* test/lisp/isearch-tests.el (isearch--test-search-within-boundaries):
Test with the BOUND arg as well (bug#78116).

(cherry picked from commit 9d0595d8795fbd604c6429317daff4d6445f8904)

Respect point when changing direction after isearch scrolling.

* lisp/isearch.el (isearch-repeat): Don't go to isearch-other-end
on changing direction after scrolling (bug#78074).

(cherry picked from commit 622825995204b7aae70b836c8e5e5d44385c401b)

Flymake: promptly delete eol overlay if source overlay changed

In the vast majority of cases, changing the source overlay
invalidates the content of the end-of-line overlay, so best to
delete it asap.

* lisp/progmodes/flymake.el (flymake--delete-overlay): Use
'flymake--eol-ov'
(flymake--highlight-line): Use some overlay modification hooks.

(cherry picked from commit 825ea052ad5638c056037c4cac92c9e666dc3820)

Eglot: improve diagnostic-reporting performance

After a change in the buffer has occured, it is often the case
that Flymake is quicker to ask for diagnostics than the server
is to supply them to us.  If we're still stuck with old outdated
diagnostics, don't forward them to Flymake, even if it eagerly
asks us for them.

* etc/EGLOT-NEWS (Changes in upcoming Eglot): Announce changes.

* lisp/progmodes/eglot.el
(eglot--diagnostics): Rework.
(eglot--report-to-flymake): Also take version.
(eglot-handle-notification textDocument/publishDiagnostics)
(eglot--managed-mode)
(eglot-flymake-backend): Tweak call to eglot--report-to-flymake.

(cherry picked from commit 7ae275f04c46e1724fafd8c8aa2f3eed5771df1c)

; Improve documentation of 'format-time-string'

* doc/lispref/os.texi (Time Parsing): Fix documentation of week
numbers for %U, %V and %W.  (Bug#78096)

(cherry picked from commit 79e7eeb32964ba79f0d0ef06c9c0d7c16c542f37)

; * lisp/textmodes/text-mode.el (text-mode-variant): Fix last change.

(cherry picked from commit 2838b64fc8b71d2a534fcf01e02a20066d99e2b3)

; Improve obsolescence of 'text-mode-variant'

* lisp/textmodes/text-mode.el (text-mode-variant): Improve
obsolescence announcement text.

* doc/lispref/modes.texi (Example Major Modes): Update example.
(Bug#78125).

(cherry picked from commit 9adb05422eaaa290a6a0542ba8862b806b34fe7c)

; * lisp/files.el (revert-buffer-restore-functions): Doc fix.

(cherry picked from commit 4858d81848839c9167a523e4b566dbb253e566c6)

; Mention early-init file in Emacs FAQ for Windows

* doc/misc/efaq-w32.texi (Location of init file, Init file):
Mention the early-init file.  Suggested by David Hedlund
<davidh@gnu.org>.

(cherry picked from commit 2a8e223b8d7c8e18a10ced98f5b794c4de9737e6)

; Isearch: Fix key bindings in docstrings

* lisp/isearch.el (isearch-allow-motion)
(isearch-motion-changes-direction): Use isearch-mode-map for
commands in docstrings (bug#78118).

Copyright-paperwork-exempt: yes
(cherry picked from commit 14c707b42d9db7dd2220118ecb49df8e2a5e7b78)

; (completion--file-name-table): Minor cleanup.

Update tree-sitter subroutine in Fsubst_char_in_region

Some explanation: Fsubst_char_in_region used to have a branch,
one branch path calls replace_range, one branch path modifies
the buffer directly.  replace_range already calls
treesit_record_change within it, so we needed to make sure we
only call treesit_record_change in the other branch path.

After I added the call to treesit_record_change, some changes
are made to Fsubst_char_in_region, and the branch was removed.
So no wonder Stefan had the confusion and wrote the FIXME note.

Now that the branch is gone, we can indeed call
treesit_record_change in the end like signal_after_change.

* src/editfns.c (Fsubst_char_in_region): Move to end.

(cherry picked from commit 3c47139b8f602286a8c5c5ca72431b933b4f2a23)

; * lisp/cus-edit.el: Fix a typo in a comment.

(cherry picked from commit d2c7d8ff6727d160e9e3a17d3775230281f8fb2d)

* lisp/progmodes/grep.el (grep-hello-file): Fix another typo.

(cherry picked from commit 8970c9589bfb9b89d2e302cf70374a8cb7bb6c81)

* lisp/progmodes/grep.el (grep-hello-file): Fix typos.

(cherry picked from commit ac40a65f75a132e47e0d4c68e7ca8b2247153b3c)

New log-edit-maybe-show-diff option for log-edit-hook

* lisp/vc/log-edit.el (log-edit-maybe-show-diff): New function.
(log-edit-hook): Add it as an option.
(log-edit-diff-function):
* etc/NEWS: Document it.

(cherry picked from commit b9886bb2069b3803fbd5ddd51fa3375b0becc0f1)

log-edit-diff-function leaves the diff-mode buffer's window selected

This reverts the following two changesets:

    Author:     Sean Whitton <spwhitton@spwhitton.name>
    AuthorDate: Tue Oct 29 09:40:02 2024 +0800

      Fix window selection after log-edit-show-diff

    Author:     Sean Whitton <spwhitton@spwhitton.name>
    AuthorDate: Tue Apr 8 20:36:42 2025 +0800

      Fix window selection after log-edit-show-diff, again

This also replaces the following changeset:

    Author:     Sean Whitton <spwhitton@spwhitton.name>
    AuthorDate: Tue Oct 29 12:52:20 2024 +0800

      * lisp/vc/log-edit.el (log-edit-diff-function): Document.

* lisp/vc/log-edit.el (log-edit-diff-function): Document that
the function *should* leave the window selected when it returns.
(log-edit-diff-fileset):
* lisp/vc/vc.el (vc-modify-change-comment):
Don't use save-selected-window (bug#77946).
(vc-diff-patch-string):
Call pop-to-buffer, not display-buffer (bug#77946).

(cherry picked from commit d44c87ceb6dc7e85ccfecf47f52f8495e34c1d0b)

Port Grep argument autodetection to Android

* lisp/progmodes/grep.el (grep-hello-file): On Android, copy
sample text to a real directory.

(cherry picked from commit 3279194bf2c859e76c95045c80a033fc54094f07)

Improve env var handling in read-file-name

Fix various bugs, including bug#77718, by rewriting the way file
name completion handles environment variable expansion.  Instead
of using completion-table-with-quoting to manipulate the string
being completed on, simply make the completion table itself
understand substitute-in-file-name.

Tests are updated: partial-completion now preserves unexpanded
environment variables.  However, partial-completion no longer
works across environment variables containing delimiters; that's
an acceptable sacrifice.

* lisp/minibuffer.el (completion--sifn-boundaries): Add.
(completion--file-name-table): Rewrite to use
substitute-in-file-name explicitly. (bug#77718)
* test/lisp/minibuffer-tests.el (completion-table-test-quoting):
Update.

(cherry picked from commit 509cbe1c35b3dd005a53ac041f9c87ee53b8e115)

Don't escape "." in `prin1' when followed by a letter

Among other users, let-alist widely uses symbols which start with a ".".
Make those symbols print more nicely by tweaking the escaping rules in
print_object to not escape a leading "." followed by a letter.  This is
a conservative change to avoid constraining future lexer changes.

This is a followup to 637dde4aba921435f78d0de769ad74c4f3230aa6, which
removed some unnecessary escaping of "." and "?" when printing symbols
in prin1.  (Actually, if we always escaped "?" (which was the case
before 637dde4aba92) then "." only ever needs to be escaped when
string_to_number returns non-nil.  So 637dde4aba92 could have just
dropped the escaping of "." with no other changes, if it didn't also
remove escaping of "?")

* src/print.c (print_object): Don't escape "." as the first
character in a symbol if followed by a letter. (bug#77656).
* test/src/print-tests.el (test-dots): Update for new behavior.

(cherry picked from commit 21e340494a5a832453999d3853839db5d8a4d865)

(Custom-dirlocals-mode): Let `define-derived-mode` do its job

* lisp/cus-edit.el (Custom-dirlocals-mode-map): Rename from
`custom-dirlocals-map`.
(Custom-dirlocals-menu): Adjust accordingly.
(Custom-dirlocals-mode): Let `define-derived-mode` do its job.
Use `run-mode-hooks`.

(cherry picked from commit a0f26f3eaf1ccde728806003932dc9e44ef07e9d)

; Fix previous change

* test/lisp/url/url-parse-tests.el
(url-generic-parse-url/ms-windows-file-uri-handling): Rename.

(cherry picked from commit c801856820c17247416846ac565b81268b4aca16)

url-parse.el: correct code for Windows paths (bug#76982)

* lisp/url/url-parse.el (url-recreate-url): Handle empty filenames
without errors.

* test/lisp/url/url-parse-tests.el
(url-generic-parse-url/ms-windows-file-uri-hanlding): Add one
more test for the scenario above.

(cherry picked from commit bc5afe421b47ec31ce94ad8dc02912acd93c3319)

; project-vc-include-unregistered: Add FIXME about renaming.

(cherry picked from commit c0491a8b807b6b2dae27fd4749c101915bd04e53)

; * doc/emacs/maintaining.texi (VC-Aware Project Backend): Copyedit.

(cherry picked from commit 56baa23e1afedd4c1f2ead47b28d39b646f4275a)

Fix ruby lint output regexps

* doc/misc/flymake.texi (An annotated example backend):
Fix regexp.

* lisp/progmodes/ruby-mode.el (ruby-flymake-simple)
(ruby-flymake-rubocop): Fix regexp
(https://lists.gnu.org/archive/html/emacs-devel/2025-04/msg00851.html).

(cherry picked from commit 4765a3b3f2b83e6a2ba4e63f78bec16dc8ca737f)

* doc/emacs/maintaining.texi (VC-Aware Project Backend):

* doc/emacs/maintaining.texi (VC-Aware Project Backend):
New node (bug#77974).
(Projects): Use "backend" instead of "back-end".

(cherry picked from commit 568a4894a8d7cc61c7a4cf416939e01fb78f0ead)

Fix the Android build

* java/README.res: Move from java/res/README, as the AAPT does
not permit non-resource files in resource directories.

(cherry picked from commit aa1b55d5210f4c8ad83a0e8c2367e8691d785fa7)

; Skip commit d394cd73d1b21bd1f6d1679c2fcbb10433477092

; * doc/misc/ert.texi (Introduction): Be more Lisp-specific.

(cherry picked from commit b5967dda32dd9091389e30d8aaa46bdf8319d3e8)

Include additional version metadata during Windows install

* admin/nt/dist-build/emacs.nsi: Add DisplayIcon, DisplayVersion, and
  Publisher values to the Uninstall registry key.

Copyright-paperwork-exempt: yes
(cherry picked from commit be4819bd578b696a4692cf7cc1b3d52390a65129)

Simplify (if COND nil BODY) to (unless COND BODY)