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(pcase--macroexpand): New function.
(pcase--expand): Use it.

* lisp/emacs-lisp/pcase.el (pcase--app-subst-match, pcase--app-subst-rest):
New optimization functions.
(pcase--u1): Add support for `quote' and `app'.
(pcase): Document them in the docstring.

* lisp/ibuffer.el (ibuffer-do-toggle-read-only): `arg' is unused.
(ibuffer-compile-format): Simplify.
(ibuffer-clear-summary-columns): Simplify.
* lisp/ibuf-ext.el (ibuffer-generate-filter-groups): Don't use the third
elem of dotimes when we don't refer to the iteration var from it.
(ibuffer-toggle-sorting-mode): Avoid add-to-list.
* lisp/ibuf-macs.el (define-ibuffer-column, define-ibuffer-op):
Silence byte-compiler.

expression for a list.

for functions with no arguments.

(mpc-volume-refresh): Make sure the corresponding header-line is updated.
(mpc-songs-jump-to, mpc-play): Use user-error.

* lisp.h (intern_driver): Add prototype.
* lread.c (intern_driver): New function.
(intern1, intern_c_string_1, Fintern):
* font.c (font_intern_prop):
* w32font.c (intern_font_name): Use it.

* frame.h (FRAME_PARAMETER):
Prefer scoped_list1 to local_list1 where either would do.
* lisp.h (scoped_list4): New macro.
(local_cons, local_list1, local_list2, local_list3, local_list4)
(make_local_vector, make_local_string, build_local_string):
Prefer functions to macros where either would do.
* xdisp.c (build_desired_tool_bar_string):
Prefer scoped_list4 to local_list4 where either would do.

Fixes: debbugs:18478

Text mode in docstring.

Fixes: debbugs:18464

Accept underscores in identifiers after "sub".

Fixes: debbugs:18502

* lisp/textmodes/reftex-sel.el (reftex-select-label-mode)
(reftex-select-bib-mode, reftex-insert-docstruct): Derive modes
from special-mode (instead of fundamental-mode) and propertize
with font-lock-face instead of just face.

* lisp/textmodes/reftex-toc.el (reftex-toc-mode, reftex-toc): Ditto.

Fixes: debbugs:18496

`lisp--local-variables-completion-table' in the `lisp--form-quoted-p'
case.

* lisp/emacs-lisp/lisp.el (lisp-completion-at-point): Only calculate
`table-etc' when `end' is non-nil.
(lisp-completion-at-point): Move `end' back if it's after quote.
If in comment or string, only complete when after backquote.

`table-etc' when `end' is non-nil.

* lisp/emacs-lisp/lisp.el (lisp--expect-function-p)
(lisp--form-quoted-p): New functions.
(lisp-completion-at-point): Use them to see if we're completing a
variable reference, a function name, or just any symbol.
http://lists.gnu.org/archive/html/emacs-devel/2014-02/msg00229.html

* net/shr.el, net/eww.el: Don't override `shr-width', but
introduce a new variable `shr-internal-width'.  This allows users
to specify a width themselves.

* image-mode.el (image-toggle-display-image): If we have a
`fit-width' or a `fit-height', don't limit the size of the image
to the window size, because that doesn't preserve the aspect
ratio.

* lisp.h (local_list4) [USE_LOCAL_ALLOCATORS]: New macro.
[!USE_LOCAL_ALLOCATORS]: Fall back to regular list4.
* frame.h (FRAME_PARAMETER): New macro.
* dispnew.c (init_display):
* fontset.c (Fset_fontset_font):
* frame.c (x_default_parameter):
* xfaces.c (set_font_frame_param, Finternal_merge_in_global_face):
* xfns.c (x_default_scroll_bar_color_parameter)
(x_default_font_parameter, x_create_tip_frame): Use it.
* editfns.c (Fpropertize): Use local_cons.
* process.c (status_message): Use build_local_string.
* xfont.c (xfont_open): Use make_local_string.
* xdisp.c (build_desired_tool_bar_string): Use local_list4.

Revert previous lisp.h change, and install the following instead.
* lisp.h (USE_LOCAL_ALLOCATORS): Define only if __GNUC__ &&
!__clang__.  This works with GCC and with clang and is safer for
compilers we don't know about.

* lisp.h (ALLOCA_FIXUP): New constant.
(LOCAL_ALLOCA): New macro.
(local_cons, make_local_vector, make_local_string): Use them.
(local_cons): Rename parameter to make capture less likely.

Fixes: debbugs:9927

* alloc.c, lisp.h (SAVE_TYPE_INT_OBJ, make_save_int_obj):
Remove; now unused.
* buffer.h (decode_buffer): Doc and indentation fixes.
* fns.c (Qstring_collate_lessp, Qstring_collate_equalp): Now static.

* buffer.c (init_buffer): Shut up -Wself-assign.
* process.c (server_accept_connection): Shut up -Wunsequenced.

* progmodes/js.el: here.

The GREP_OPTIONS environment variable is planned to be marked
obsolescent in GNU grep, due to problems in its use, so stop
relying on it.
* progmodes/grep.el (grep-highlight-matches): Document this.
(grep-process-setup): Do not set GREP_OPTIONS.
(grep-compute-defaults): Use an explicit --color option if supported.

* src/fns.c (sxhash): For symbols, use address as hash code.

* category.c (Fmake_category_set):
* xdisp.c (get_overlay_arrow_glyph_row):
* w32font.c (intern_font_name): Prefer ptrdiff_t to int.

* charset.c (load_charset_map_from_file): Use scoped_list2
and build_local_string.
* buffer.c (Fother_buffer, other_buffer_safely, init_buffer):
* emacs.c (init_cmdargs, decode_env_path):
* fileio.c (Fexpand_file_name):
* fns.c (maybe_resize_hash_table) [ENABLE_CHECKING]:
* frame.c (x_get_arg):
* keyboard.c (safe_run_hooks_error):
* lread.c (load_warn_old_style_backquotes):
* xdisp.c (Fcurrent_bidi_paragraph_direction):
* xfns.c (x_default_scroll_bar_color_parameter, select_visual):
* xselect.c (x_clipboard_manager_error_1)
(x_clipboard_manager_save_all):
* xterm.c (x_term_init): Use build_local_string.

Don't add outdated key-shortcut cache.

Fixes: debbugs:18482

 src/sound.c [WINDOWSNT]: Include w32common.h and mbstring.h.
 (SOUND_WARNING) [WINDOWSNT]: Include in do..while and improve the
 error message format.  Use message_with_string to have non-ASCII
 file names properly displayed.
 (do_play_sound) [WINDOWSNT]: Use Unicode APIs to play sound files
 when w32-unicode-filenames is non-nil, but not on Windows 9X,
 where these APIs are not available even in UNICOWS.DLL.  Improve
 the format of error messages and include the file name in them
 where appropriate.
 (Fplay_sound_internal) [WINDOWSNT]: Make the MS-Windows branch
 call play-sound-functions, per documentation.
 src/w32.c (w32_get_long_filename, w32_get_short_filename): Constify
 the input file name arguments.
 src/w32.h (w32_get_long_filename, w32_get_short_filename): Update
 prototypes.

* lisp.h (local_cons, local_list1, local_list2, local_list3)
[USE_LOCAL_ALLOCATORS]: New macros.
[!USE_LOCAL_ALLOCATORS]: Fall back to regular functions.
(build_local_string): Avoid argument name expansion clash with
make_local_string.
* alloc.c (toplevel)
[USE_LOCAL_ALLOCATORS && GC_MARK_STACK != GC_MAKE_GCPROS_NOOPS]:
Preprocessor guard to avoid impossible configuration.
* charset.c (Ffind_charset_region, Ffind_charset_string):
Use make_local_vector.
* lread.c (read1, substitute_object_recurse): Use scoped_cons.
* textprop.c (Fput_text_property, Fadd_face_text_property):
Use scoped_list2.
(copy_text_properties): Use local_cons and local_list3.
* chartab.c (uniprop_table):
* data.c (wrong_choice, wrong_range):
* doc.c (get_doc_string):
* editfns.c (format2):
* fileio.c (Fexpand_file_name, auto_save_error):
* fns.c (Fyes_or_no_p):
* font.c (font_parse_xlfd, font_parse_family_registry, font_add_log):
* fontset.c (Fset_fontset_font):
* keyboard.c (echo_add_key, echo_dash, parse_menu_item)
(read_char_minibuf_menu_prompt):
* keymap.c (silly_event_symbol_error, describe_vector):
* menu.c (single_menu_item):
* minibuf.c (Fread_buffer):
* process.c (status_message, Fformat_network_address)
(server_accept_connection): Use make_local_string and
build_local_string.  Prefer compound literals where appropriate.

* fns.c (Fsort): Tweak sort docstring.

  * doc/emacs/regs.texi (Text Registers): Update end-user documentation
  to reflect `insert-register' interface change.
  
  * doc/lispref/text.texi (Registers): Make `insert-register' documentation
  reflect interface change.

* doc/emacs/regs.texi (Text Registers): Update end-user documentation
to reflect `insert-register' interface change.

* doc/lispref/text.texi (Registers): Make `insert-register' documentation
reflect interface change.

do not force a delay if none was specified.

Fixes: debbugs:18334