* etc/NEWS (replace-buffer-contents): Fix formatting.

* src/editfns.c (Freplace_buffer_contents): Doc fix.

This was part of the original design of the module
API (https://lists.gnu.org/archive/html/emacs-devel/2015-02/msg00960.html),
but I didn't take it into account when adding the should_quit
function.

Instead of duplicating the environment fields or using the C
preprocessor, use configure to build emacs-module.h.

* configure.ac: Expand emacs-module.h template.

This (and my previous patch) incorporate:
2017-06-17 diffseq: port to GCC 7 with --enable-gcc-warnings
2017-06-15 gettext-h: Update comment
* lib/diffseq.h: Copy from gnulib.

regex.

* src/Makefile.in (clean): Do not remove emacs-module.h.in.
(bootstrap-clean): Remove emacs-module.h.

* lisp/gnus/mm-view.el (mm-display-inline-fontify): Disable local vars.

* lisp/simple.el (current-line): New function.
* test/list/simple-tests.el: Add tests for current-line.

This reverts commit ae98cdf.

* lisp/emacs-lisp/package.el (package-delete):
Don't pay attention to delete-by-moving-to-trash.

; * etc/NEWS: Mention this.

* lisp/cus-edit.el (custom-variable-type):
Avoid an error due to plist-put becoming stricter of late.

* autogen.sh (get_version): Check return status of "--version".
(check_version): Try to distinguish between a missing tool
and a broken one.  (Bug#27288)

* lisp/files.el (kill-matching-buffers):
Add option to not confirm killing.  (Bug#27286)

This file has never provided any such "version" command.

* lisp/gnus/mm-view.el (mm-display-inline-fontify):
Bind enable-local-variables to nil globally instead of making it
buffer-local; remove let-bind of local-enable-local-variables.
cf. <b4mtw3bbfp5.fsf@jpl.org> in the emacs-devel list.

This reverts commit 49c0ff2.

* lisp/gnus/gnus-art.el (article-date-ut): Don't rely on text prop
when searching the old Date header boundary in order to delete it.

* autogen.sh (get_version): Simplify and make more reliable
by using expr rather than echo | sed.  Check exit status of program.
Run program in subshell in case it cannot be executed.
(check_version): Check exit status of command rather than its output.
Check return status of get_version.

Problem reported by Andrés Musetti (Bug#27248).
* src/widget.c (emacsFrameClassRec): Do not initialize superclass here.
(emacsFrameClass): Now a function (which initializes the
superclass) instead of a variable.  All uses changed.

* lisp/textmodes/css-mode.el (css-electric-keys): Remove `:options`
since it just duplicates the default value.

* lisp/progmodes/prolog.el (prolog-indent-width)
(prolog-left-indent-regexp, prolog-paren-indent-p)
(prolog-paren-indent): Add :safe property.

* lisp/minibuffer.el (completion-pcm--filename-try-filter)
(completion-pcm--all-completions): Use nreverse to undo the reversing
caused by using push in the loop.

* lisp/gnus/gnus-art.el (article-date-ut):
Work for unfolded multi-line Date header.
(article-transform-date):
Refactor; add header name if it is missing in user-defined date line.
(article-date-user): Fix name of date type.

Without this patch, ./temacs would dump core sometimes on Fedora
25 x86-64.  The problem was that the hybrid allocator assumed that
all pointers into bss_sbrk_buffer are allocated via gmalloc.  This
assumption is not true on Fedora, because the standard memory
allocator calls gdefault_morecore, which means its blocks are
interleaved with our blocks.  Usually the code happened to work,
because our data structures agreed with the glibc data structures,
but this was merely luck due to a shared pedigree, and as glibc
mutates our luck has run out.
* src/gmalloc.c (ALLOCATED_BEFORE_DUMPING) [HYBRID_MALLOC]:
Remove; no longer needed.
(BLOCK): Use unsigned division, as that does the right thing near zero.
(register_heapinfo, __malloc_internal_nolock, __free_internal_nolock)
(_realloc_internal_nolock):
Big blocks now have type -1, not 0, as 0 now means the block is
not ours.
(morecore_nolock): Omit now-unnecessary casts to size_t.
(allocated_via_gmalloc) [HYBRID_MALLOC]: New function.
(hybrid_free, hybrid_realloc) [HYBRID_MALLOC]: Use it, to
avoid calling the wrong free or realloc function in some cases.

* src/gmalloc.c (register_heapinfo, _malloc_internal_nolock):
Omit unnecessary initialization.

* src/fileio.c (READ_BUF_SIZE): Don’t allocate more than
MAX_ALLOCA bytes in a single stack array.

* src/bidi.c (MAX_BPA_STACK): Now a constant, not a macro.
Shrink it to allow for the two struct bidi_it objects in
the same frame.
(PUSH_BPA_STACK): Avoid integer overflow with enormous bidi cache.
(bidi_find_bracket_pairs): Use compile-time check instead of runtime.

* src/editfns.c (styled_format): Subtract initial buffer size
from sa_avail, since it is nontrivial.

Values that don't contain other values cannot be circular, so checking
for circular objects is a waste of cycles.

* src/lread.c (substitute_object_recurse): If the subtree being
examined is a symbol, number, or property-less string, just return
it.

* src/lread.c (read1): After reading an object using the "#n=" syntax,
if the read object is a cons cell, instead of recursively substituting
the placeholder with the new object, mutate the placeholder cons cell
itself to have the correct car and cdr values.

* configure.ac: Check for getc_unlocked.
* src/charset.c (read_hex, load_charset_map_from_file): Use
getc_unlocked instead of getc.
(getc_unlocked) [!HAVE_GETC_UNLOCKED]: Fall back to getc.
* src/lread.c (readbyte_from_file, Fget_file_char, read1,
getc_unlocked): Likewise.

For larger input files with lots of shared data structures, an
association list is too slow.

* src/lread.c (read_objects_map, read_objects_completed): New
variables, replacing read_objects.
(readevalloop): Initialize them with hash tables before starting a
top-level read, if they're not already empty hash tables, and reset
them to Qnil afterwards if something was added to the hash tables.
(read_internal_start): Likewise.
(read1): Store first the placeholder and later the newly read object
into read_objects_map under the specified object number.  If the new
object can contain a reference to itself, store it in
read_objects_completed.
(substitute_objects_recurse): Check read_objects_completed instead of
read_objects for the known possibly-recursive objects.
(syms_of_lread): Update initializations.

* src/lread.c (read1): When interning a symbol, only create a new
string object for the name if we're going to use it for a new symbol
object.

* src/lread.c (readevalloop, read_internal_start): Fix
make_hash_table calls to make build succeed.

* lisp/ses.el (ses-recalculate-all): `A1' -> `(ses-cell-symbol 0 0)'

Please see etc/ORG-NEWS for details.

Entries from the Org version of schemas.xml have been added to
the Emacs version of schemas.xml.

Avoid string-to-multibyte and string-as-unibyte.
Don't make *Help* unibyte just because the char was in a unibyte buffer.

* admin/unidata/unidata-gen.el (unidata-check): Do not test special
casing mapping of characters since that mapping is not constructed from
the unidata.txt file.
Also, check for integer decoder and cons char earlier so that less
unnecessary processing is performed.

This can improve performance significantly on stdio-bottlenecked code.
E.g., make-docfile is 3x faster on my Fedora 25 x86-64 desktop.
* admin/merge-gnulib (GNULIB_MODULES): Add unlocked-io.
* lib-src/ebrowse.c, lib-src/emacsclient.c, lib-src/etags.c:
* lib-src/hexl.c, lib-src/make-docfile.c, lib-src/movemail.c:
* lib-src/profile.c, lib-src/update-game-score.c:
Include unlocked-io.h instead of stdio.h, since these programs are
single-threaded.
* lib/gnulib.mk.in, m4/gnulib-comp.m4: Regenerate.
* lib/unlocked-io.h, m4/unlocked-io.m4: New files, copied from Gnulib.
* src/charset.c, src/cm.c, src/emacs.c, src/image.c, src/keyboard.c:
* src/lread.c, src/term.c:
Include sysstdio.h, possibly instead of stdio.h, to define
the unlocked functions if the system does not provide them.
* src/charset.c, src/lread.c (getc_unlocked):
Remove, since sysstdio.h now defines it if needed.
* src/cm.c (cmputc, cmcheckmagic):
* src/dispnew.c (update_frame, update_frame_with_menu)
(update_frame_1, Fsend_string_to_terminal, Fding, bitch_at_user):
* src/emacs.c (main, Fdump_emacs):
* src/fileio.c (Fdo_auto_save, Fset_binary_mode):
* src/image.c (slurp_file, png_read_from_file, png_load_body)
(our_stdio_fill_input_buffer):
* src/keyboard.c (record_char, kbd_buffer_get_event, handle_interrupt):
* src/lread.c (readbyte_from_file):
* src/minibuf.c (read_minibuf_noninteractive):
* src/print.c (printchar_to_stream, strout)
(Fredirect_debugging_output):
* src/sysdep.c (reset_sys_modes, procfs_ttyname)
(procfs_get_total_memory):
* src/term.c (tty_ring_bell, tty_send_additional_strings)
(tty_set_terminal_modes, tty_reset_terminal_modes)
(tty_update_end, tty_clear_end_of_line, tty_write_glyphs)
(tty_write_glyphs_with_face, tty_insert_glyphs)
(tty_menu_activate):
* src/xfaces.c (Fx_load_color_file):
Use unlocked stdio when it should be safe.
* src/sysstdio.h (clearerr_unlocked, feof_unlocked, ferror_unlocked)
(fflush_unlocked, fgets_unlocked, fputc_unlocked, fputs_unlocked)
(fread_unlocked, fwrite_unlocked, getc_unlocked, getchar_unlocked)
(putc_unlocked, putchar_unloced): Provide substitutes if not declared.

* configure.ac (getc_unlocked): Remove check, as unlocked-io now
does this for us.

* lisp/ses.el (ses-sym-rowcol):  Check that the renamed cell
hashmap has been instantiated before getting data from it.  When
editing several spreadsheets, and you have spreadsheet #1 with a
cell named `foo', and no renamed cell in spreadsheet #2, then if
you make a formula with `foo' in spreadsheet #2, not doing this
check will make an error.
(ses-cell-set-formula): Robustify versus incorrect cell references
given in the user provided formula.  An explicit error message is
provided after the action when the user gives an incorrect cell
reference, but the formula edition is not changed.  This means that
if the incorrect reference is to a cell that is created someday,
then this new cell will not have the edited cell in its reference
list.  Fixing this can still be done by editing again the first
cell formula.
(ses-relocate-symbol): Do not create symbol of referred-to cell
when this is a renamed cell.

* src/xdisp.c (row_text_area_empty): New function.
(display_line): Call row_text_area_empty to verify that a glyph
row's text area is devoid of any glyphs that came from a buffer or
a string.  This fixes a bug with empty-lines indication
disappearing when line numbers or line-prefix are displayed.
(display_line): Delete the argument FORCE; all callers changed.
Remove the condition for actually producing the glyphs for the
line number, as even if the number didn't change we need to
produce empty space.

* src/xdisp.c: 	(maybe_produce_line_number): Use the default face
for background of the blank glyphs in the line-number area which
are drawn beyond EOB.
(display_line): Reset the glyph row's displays_text_p flag only on
empty lines that don't display line numbers.  This fixes cursor
display beyond EOB.  Fix the bidi information in the glyphs
produced for line numbers.  Set the avoid_cursor_p flag of glyphs
produced for line numbers.

* src/xdisp.c (maybe_produce_line_number): Update the metrics in
IT, not in IT->glyph_row, since the latter gets overwritten in
display_line.  Fixes display of line numbers when the font used
for them is larger than that of the default face.

* src/xdisp.c (redisplay_window): If forced window-start requires
to move a window's point, and the window is under relative
line-number display, force another round of redisplay to update
the relative line numbers.  This fixes follow-mode "redisplay" of
its window group.

* lisp/frame.el: Add display-line-numbers to the list of variables
that should trigger redisplay of the current buffer.

* src/xdisp.c (x_produce_glyphs):
* src/term.c (produce_glyphs): Adjust tab stops for the horizontal
space taken by the line-number display.

* etc/NEWS:
* src/xdisp.c (syms_of_xdisp, maybe_produce_line_number):
* lisp/cus-start.el: Rename display-line-width to
display-line-number-width.

* src/xdisp.c (maybe_produce_line_number): In relative mode
display the current line number as its absolute value, not as zero.

* lisp/faces.el (line-number-current-line): New face.

* src/xdisp.c (syms_of_xdisp) <line-number-current-line>: New
symbol.
(try_window_id, try_cursor_movement): Disable these optimizations
when the line-number-current-line face is different from
line-number face.
(maybe_produce_line_number): Display the current line in the
line-number-current-line face, if it's different from line-number.

* etc/NEWS: Update the documentation.

* src/xdisp.c (syms_of_xdisp) <display-line-numbers-disable>: New
symbol.
(should_produce_line_number): New function.
(display_line): Use should_produce_line_number to determine
whether a line number should be produced for each glyph row.

* lisp/emacs-lisp/eieio-core.el: Confine `cl-declaim' calls to compile
time.

* src/xdisp.c (x_produce_glyphs, hscroll_window_tree): Adjust
hscroll calculations to line-number display.
* src/term.c (produce_glyphs): Adjust tab stop to window's
hscroll.  These two changes fix horizontal scrolling when line
numbers are displayed.  But there's still a bug: the horizontal
shift of lines that begin with a TAB is different from the rest.
* src/xdisp.c (move_it_in_display_line_to): Call
should_produce_line_number to determine whether a line number
should be produced for this screen line.

* src/xdisp.c (hscroll_window_tree): Make additional calculations
regarding glyphs produced for line numbers conditional on
line-number display.

Problem reported by Mike Kupfer in:
http://lists.gnu.org/archive/html/emacs-devel/2017-06/msg00512.html
* lisp/emacs-lisp/lisp-mnt.el (lm-crack-copyright):
Do not require later lines in a copyright notice to have more
indentation than earlier lines.

Provide mouse dragging and resizing of frames.  Allow resizing
frames proportionally.  Provide additional functionality for
child frames.  Minor bug fixes.

* lisp/frame.el (frame-border-width, frame-pixel-width)
(frame-pixel-height): Alias to `frame-internal-border-width',
`frame-native-width' and `frame-native-height'.
(frame-inner-width, frame-inner-height, frame-outer-width)
(frame-outer-height): New functions.
* lisp/minibuffer.el (completion-auto-help): Fix typo.
* lisp/mouse.el (mouse-drag-line, mouse-drag-mode-line)
(mouse-drag-header-line): Allow moving a frame by dragging the
mode line of its bottommost window (on a minibuffer-less frame)
or the header line of its topmost window.
(mouse-drag-vertical-line): Mention argument in doc-string.
(mouse-resize-frame, mouse-drag-frame, mouse-drag-left-edge)
(mouse-drag-top-left-corner, mouse-drag-top-edge)
(mouse-drag-top-right-corner, mouse-drag-right-edge)
(mouse-drag-bottom-right-corner, mouse-drag-bottom-edge)
(mouse-drag-bottom-left-corner): New functions for resizing a
frame by dragging its internal border together with
corresponding key bindings.
* lisp/tooltip.el (tooltip-frame-parameters): Add
'no-special-glyphs' to default parameters and update version
tag.
* lisp/window.el (frame-auto-hide-function): Add choice to make
frame invisible and update version tag.
(window--delete): Handle 'auto-hide-function' frame parameter.
(window--maybe-raise-frame): Respect 'no-focus-on-map' and
'no-accept-focus' frame parameters.
(display-buffer--action-function-custom-type): Add
`display-buffer-in-child-frame'.
(display-buffer): Mention `display-buffer-in-child-frame' in
doc-string.
(display-buffer-in-child-frame): New action function for
`display-buffer'.
(window--sanitize-margin): Return zero when MARGIN cannot be
sanitized.
(fit-frame-to-buffer): Major rewrite to handle child frames and
'fit-frame-to-buffer-sizes' and 'fit-frame-to-buffer-margins'
frame parameters.
(window-largest-empty-rectangle--maximums-1)
(window-largest-empty-rectangle--maximums)
(window-largest-empty-rectangle--disjoint-maximums)
(window-largest-empty-rectangle): New functions.

* src/dispextern.h (WINDOW_WANTS_MODELINE_P)
(WINDOW_WANTS_HEADER_LINE_P): Remove.  Functionality is now
provided by corresponding functions window_wants_modeline and
window_wants_header_line in window.c.  Adjust users.
* src/dispnew.c (adjust_glyph_matrix)
(buffer_posn_from_coords): Use window_wants_modeline and
window_wants_header_line instead of WINDOW_WANTS_MODELINE_P and
WINDOW_WANTS_HEADER_LINE_P.
* src/frame.c (keep_ratio): New function.
(adjust_frame_size): Call keep_ratio for each of F's child
frames.
(make_frame): Initialize no_special_glyphs slot.
(frame_internal_border_part): New function.
(Fframe_pixel_width, Fframe_pixel_height, Fborder_width): Rename
to Fframe_native_width, Fframe_native_height mand
Fframe_internal_border_width.
(frame_parm_table): Add Qno_special_glyphs entry.
(frame_float_type): New enumeration type.
(frame_float): New function to handle frame size and position
ratios.
(x_set_frame_parameters): Handle size and position ratios.
(x_set_no_special_glyphs): New function
(x_figure_window_size): Handle size and position ratios.
(syms_of_frame): Add Qdisplay_monitor_attributes_list,
Qno_special_glyphs, Qframe_edges, Qkeep_ratio, Qwidth_only,
Qheight_only, Qleft_only and Qtop_only.
* src/frame.h (internal_border_part): New enumeration type.
(struct frame): New slot no_special_glyphs.
(FRAME_NO_SPECIAL_GLYPHS): New macro.
* src/gtkutil.c (xg_frame_restack): Return immediately for
GTK versions before 2.18.0.
* src/keyboard.c (internal_border_parts): New array constant.
(make_lispy_position): For frames with border dragging enabled
return internal border part.
(syms_of_keyboard): New symbols Qdrag_internal_border,
Qleft_edge, Qtop_left_corner, Qtop_edge, Qtop_right_corner,
Qright_edge, Qbottom_right_corner, Qbottom_edge and
Qbottom_left_corner.
* src/minibuf.c (read_minibuf_unwind): When exiting the
minibuffer deal with frames that have the 'minibuffer-exit'
parameter set.
(syms_of_minibuf): New symbol Qminibuffer_exit.
* src/nsfns.m (frame_parm_handler): Add entry for
x_set_no_special_glyphs.
(Fx_create_frame): Handle 'no-special-glyphs' parameter.
Intitialize new cursor types for dragging frame borders.
* src/nsterm.h (struct ns_output): Add new cursor types for
dragging frame borders.
* src/w32fns.c (w32_frame_parm_handlers): Add entry for
x_set_no_special_glyphs.
(Fx_create_frame): Handle 'no-special-glyphs' parameter.
Intitialize new cursor types for dragging frame borders.
* src/w32term.h (struct w32_output): Add new cursor types for
dragging frame borders.
* src/window.c (coordinates_in_window)
(Fwindow_line_height, window_internal_height): Use
window_wants_modeline and window_wants_header_line instead of
WINDOW_WANTS_MODELINE_P and WINDOW_WANTS_HEADER_LINE_P.
(Fwindow_lines_pixel_dimensions): New function.
(window_parameter): New function.
(Fwindow_parameter): Call window_parameter.
(window_wants_mode_line, window_wants_header_line): New
functions replacing the macros WINDOW_WANTS_MODELINE_P and
WINDOW_WANTS_HEADER_LINE_P from dispextern.h.
(syms_of_window): New symbols Qmode_line_format and
Qheader_line_format.
* src/window.h: Reorganize and re-comment macros.  Use
window_wants_modeline and window_wants_header_line instead of
WINDOW_WANTS_MODELINE_P and WINDOW_WANTS_HEADER_LINE_P.
(MINI_NON_ONLY_WINDOW_P, MINI_ONLY_WINDOW_P): Minor rewrite.
(WINDOW_BUFFER): New macro.
(WINDOW_BOX_LEFT_EDGE_COL, WINDOW_BOX_RIGHT_EDGE_COL): Remove.
* src/xdisp.c (window_text_bottom_y, window_box_height)
(window_box, start_display)
(compute_window_start_on_continuation_line)
(try_cursor_movement, redisplay_window)
(try_window_reusing_current_matrix, try_window_id)
(display_line, expose_window): Use window_wants_modeline and
window_wants_header_line instead of WINDOW_WANTS_MODELINE_P and
WINDOW_WANTS_HEADER_LINE_P.
(pos_visible_p, display_mode_lines): Respect W's
'mode-line-format' and 'header-line-format' window parameters.
(init_iterator): Use window_wants_modeline and
window_wants_header_line instead of WINDOW_WANTS_MODELINE_P and
WINDOW_WANTS_HEADER_LINE_P.  For tip frames respect
no_special_glyphs value.
(note_mouse_highlight): Set frame border cursors when on
internal border.
(x_draw_right_divider, x_draw_bottom_divider): Try to improve
drawing of window dividers.
* src/xfns.c (mouse_cursor): Add entries for border parts.
(mouse_cursor_types): Add entries for cursor types to drag
frame borders.
(INSTALL_CURSOR): Add entries for new cursor types to drag
frame borders.
(Fx_create_frame): Handle 'no-special-glyphs' parameter.
(x_frame_parm_handlers): Add entry for
x_set_no_special_glyphs.
(Vx_window_left_edge_shape, Vx_window_top_left_corner_shape)
(Vx_window_top_edge_shape, Vx_window_top_right_corner_shape)
(Vx_window_right_edge_shape)
(Vx_window_bottom_right_corner_shape)
(Vx_window_bottom_edge_shape)
(Vx_window_bottom_left_corner_shape): New variables.
(x_frame_restack): Call xg_frame_restack only for GTK versions
starting with 2.18.0.
* src/xterm.c (x_free_frame_resources): Remove new cursors for
dragging frame borders.
* src/xterm.h (struct x_output): Add new cursor types for
dragging frame borders.

* doc/lispref/display.texi (Size of Displayed Text): Document
`window-lines-pixel-dimensions'.
* doc/lispref/elisp.texi (Top): Add entry for "Mouse Dragging
Parameters".
* doc/lispref/frames.texi (Frame Size): Replace
frame-pixel-width/-height by frame-native-width/-height.  Add
frame-inner-width/-height and frame-outer-width/-height docs.
(Position Parameters): Describe specifying position as ratios.
Clarify remark about positions relative to bottom/ridge display
edge.
(Size Parameters): Describe specifying sizes as ratios.
Describe 'fit-frame-to-buffer-margins' and
'fit-frame-to-buffer-sizes' parameters.
(Layout Parameters): Describe 'no-special-glyphs' parameter.
(Frame Interaction Parameters): Describe 'auto-hide-function',
'minibuffer-exit' and 'keep-ratio' parameters.
(Mouse Dragging Parameters): New section describing
'drag-internal-border', 'drag-with-header-line',
'drag-with-mode-line', 'snap-width', 'top-visible' and
'bottom-visible' parameters.
(Management Parameters): Mention that `override-redirect' has
no effect on MS Windows.
(Font and Color Parameters): Mention child frames for `alpha'
parameter.
(Child Frames): Rewrite section with description and cross
references to new frame parameters added.
* doc/lispref/modes.texi (Mode Line Basics): Mention
'mode-line-format' and 'header-line-format' window parameters.
* doc/lispref/windows.texi (Resizing Windows): Mention effect
of `fit-frame-to-buffer-margins' for child frames.
(Display Action Functions): New action function
`display-buffer-in-child-frame'.
(Quitting Windows): Mention `make-frame-invisible' as optional
value of `frame-auto-hide-function' and `auto-hide-function'
frame paameter.
(Coordinates and Windows): Describe new function
`window-largest-empty-rectangle'.
(Window Parameters): Describe new parameters 'mode-line-format'
and 'header-line-format'.  Index all window parameters described
in this section.

* lisp/progmodes/cc-cmds.el (c-declaration-limits): Remove unused local
variable.

* lisp/progmodes/cc-defs.el (c--mapcan-status): Remove.
(c--cl-library): New variable.
(Top level): Amend the form which requires library cl or cl-lib.
(c--mapcan, c--set-difference, c--intersection, c--macroexpand-all)
(c--delete-duplicate): Amend to use c--cl-library instead of
c--mapcan-status.

* lisp/progmodes/cc-engine.el (c-syntactic-skip-backward)
(c-back-over-compound-identifier): Remove unused local variables.

* lisp/progmodes/cc-fonts.el (c-font-lock-declarations): Remove an unused
local variable.

* lisp/progmodes/cc-langs.el (Top level): Amend to use c--cl-library instead
of c--mapcan-status.

* lisp/progmodes/cc-styles.el (Top level): Add a cc-bytecomp-defun to try to
silence a compiler warning.

* src/xdisp.c (maybe_produce_line_number): Fix the condition for
producing space glyphs instead of a line number to include the
case of display strings and overlays.

Copyright-paperwork-exempt: yes

* lisp/net/tramp-adb.el (tramp-adb-ls-toolbox-regexp): Fix link part.
(tramp-adb-handle-directory-files-and-attributes)
(tramp-adb-handle-file-name-all-completions): Insert "."  and
".." only when needed.
(tramp-adb-get-ls-command): Force one column output for toybox.

* src/buffer.c (disable_line_numbers_overlay_at_eob): New
function.
* src/lisp.h (disable_line_numbers_overlay_at_eob): Add prototype.
* src/xdisp.c (should_produce_line_number): When at ZV, call
disable_line_numbers_overlay_at_eob to determine whether line
numbers should be displayed beyond ZV.

* src/frame.c (keep_ratio): New arg P.  Caller changed.  Since it
is non-null, it avoids a GCC 7 warning that FRAME_PARENT_FRAME
might return null.  This also avoids a run-time test.

* src/frame.h (FRAME_TOOL_BAR_POSITION)
(FRAME_VERTICAL_SCROLL_BAR_TYPE, FRAME_HAS_VERTICAL_SCROLL_BARS)
(FRAME_HAS_VERTICAL_SCROLL_BARS_ON_LEFT)
(FRAME_HAS_VERTICAL_SCROLL_BARS_ON_RIGHT)
(FRAME_OVERRIDE_REDIRECT, FRAME_UNDECORATED, FRAME_PARENT_FRAME)
(FRAME_SKIP_TASKBAR, FRAME_NO_FOCUS_ON_MAP)
(FRAME_NO_ACCEPT_FOCUS, FRAME_NO_SPECIAL_GLYPHS, FRAME_Z_GROUP)
(FRAME_Z_GROUP_NONE, FRAME_Z_GROUP_ABOVE, FRAME_Z_GROUP_BELOW)
(FRAME_HAS_HORIZONTAL_SCROLL_BARS): Parenthesize macro definiens
to allow arbitrary expression arguments.

* src/intervals.h (ROOT_INTERVAL_P, ONLY_INTERVAL_P)
(INTERVAL_LAST_POS): Omit unnecessary parens.
(LENGTH): Omit test for null pointer.  The argument is never null.
The unnecessary test causes GCC 7.1.0 to assume that the argument
might be null, and therefore to issue false alarms when the
argument is dereferenced in other expressions.

(c-font-lock-declarators): Remove unused vars `id-end', `paren-depth',
and `brackets-after-id'.
(c-font-lock-objc-methods): Mark unused args.

* lisp/dired.el (dired-re-maybe-mark, dired-map-over-marks)
(dired-mark, dired-desktop-buffer-misc-data)

* lisp/dired-aux.el (dired-do-create-files, dired-do-create-files-regexp)
(dired-create-files-non-directory, dired-insert-subdir-validate)
(dired-alist-sort, dired-do-shell-command): Don't quote lambda forms.

* lisp/dired-aux.el (dired-do-chxxx, dired-clean-directory)
(dired-mark-confirm, dired-query, dired-byte-compile)
(dired-load, dired-update-file-line, dired-after-subdir-garbage)
(dired-relist-file, dired-rename-subdir, dired-do-create-files)
(dired-mark-read-file-name, dired-do-copy, dired-do-symlink)
(dired-do-hardlink, dired-do-rename, dired-do-rename-regexp)
(dired-do-copy-regexp, dired-do-hardlink-regexp)
(dired-do-symlink-regexp, dired-create-files-non-directory)
(dired-upcase, dired-downcase)

* lisp/dired.el (dired-mode, dired-copy-filename-as-kill)
(dired-internal-do-deletions, dired-internal-do-deletions):
Prefer #' instead of (function ...).

* lisp/dired-aux.el (dired-do-shell-command): Store condition value
in local variable ok.
Use `when' instead of 1-branch `if'.

* lisp/epg.el (epg--status-TRUST_MARGINAL): Change symbol `marginal'
to `good'.

* src/xdisp.c (maybe_produce_line_number): Update IT's metrics
also when glyph_row is NULL.  This is important for move_it_*
functions.

Works very slowly.

* src/xdisp.c (display_count_lines_visually): New function.
(maybe_produce_line_number): Support 'visual' mode of line-number
display.
* src/xdisp.c (maybe_produce_line_number): Update IT's metrics
also when glyph_row is NULL.  This is important for move_it_*
functions.
(syms_of_xdisp) <display-line-number-width>: Now buffer-local.
(try_window_id, redisplay_window, try_cursor_movement): For
'visual' line-number display, disable the same redisplay
optimizations as for 'relative'.

* lisp/cus-start.el (standard): Add new value for the
customization form of display-line-numbers.

* src/xdisp.c (next_element_from_display_vector): Don't try
accessing the dpvec[] array if its size is zero.  (Bug#27504)

* src/xdisp.c (should_produce_line_number): Call get-char-property
at ZV as well, to support default-text-properties.

* lisp/help-fns.el (help-fns--analyse-function)
(help-fns-function-description-header): New functions, extracted from
describe-function-1.
(describe-function-1): Use them.
* lisp/eshell/esh-cmd.el (eshell/which): Use
`help-fns-function-description-header' instead of
`describe-function-1'.

* lisp/progmodes/tcl.el (tcl-auto-fill-mode): Declare obsolete.
* etc/NEWS: Announce it.

* lisp/calc/calc-units.el (calc-permanent-units):
(math-compare-unit-names, math-simplify-units-quotient):
(math-build-units-table-buffer): Use dolist to replace extra bindings
and some while loops.

* lisp/url/url-history.el (url-history-update-url): Use `url-p'
instead of `vectorp'.

(url-completion-function): Mark as obsolete.
Mark unused args accordingly.

* lisp/net/tramp-compat.el: Avoid compiler warning.

* lisp/net/tramp-sh.el (tramp-sh-file-name-handler):
Remove lock machinery.

* lisp/net/tramp.el (tramp-locked, tramp-locker): Move up.
(tramp-file-name-handler): Add lock machinery from
`tramp-sh-file-name-handler'.  Allow timers to run.
(tramp-accept-process-output): Remove nasty workaround.
Suppress timers.

* test/lisp/net/tramp-tests.el (shell-command-sentinel):
Suppress run in tests.
(tramp--instrument-test-case-p): New defvar.
(tramp--instrument-test-case): Use it in order to allow nested calls.
(tramp--test-message, tramp--test-backtrace): New defsubst,
will be used for occasional test instrumentation.
(tramp-test00-availability, tramp-test31-vc-registered): Use them.
(tramp-test28-shell-command)
(tramp--test-shell-command-to-string-asynchronously): Suppress
nasty messages.  Don't overwrite sentinel.
(tramp-test36-asynchronous-requests): Rewrite major parts.
Expect :passed.

* src/xdisp.c (maybe_produce_line_number): Fix bug that caused
line numbers to be displayed in empty lines beyond ZV.
(x_produce_glyphs): Start fixing TAB display in truncated lines.

* lisp/emacs-lisp/debug.el (debugger-insert-backtrace): New function,
prints the given backtrace frames.
(debugger-setup-buffer): Use it instead of editing the backtrace
buffer text.

Change ert to use the new `backtrace-frames' function instead of
collecting frames one by one with `backtrace-frame'.  Additionally,
collect frames starting from `signal' instead the somewhat arbitrary
"6 from the bottom".  Skipping 6 frames would skip the expression that
actually caused the signal that triggered the debugger.  Possibly 6
was chosen because in the case of a failed test, the triggering frame
is an `ert-fail' call, which is not so interesting.  But in case of a
test throwing an error, this drops the `error' call which is too much.

* lisp/emacs-lisp/debug.el (debugger-make-xrefs): Remove.
* lisp/emacs-lisp/ert.el (ert--make-xrefs-region): Bring in relevant
code from `debugger-make-xrefs'.
(ert--print-backtrace): Add DO-XREFS parameter, delegate to
`debugger-insert-backtrace'.
(ert--run-test-debugger): Record the backtrace frames starting from
the instigating `signal' call.
(ert-run-tests-batch): Pass nil for `ert--print-backtrace's new
DO-XREFS parameter.
(ert-results-pop-to-backtrace-for-test-at-point): Pass t as DO-XREFS
to `ert--print-backtrace' and remove call to `debugger-make-xrefs'.
* test/lisp/emacs-lisp/ert-tests.el (ert-test-record-backtrace): Check
the backtrace list instead of comparing its string representation.
Expect `signal' to be the first frame.

* src/print.c (syms_of_print): Add new variable,
print-escape-control-characters.
(print_object): Print control characters with octal escape codes when
print-escape-control-characters is true.
* lisp/subr.el (backtrace):
* lisp/emacs-lisp/debug.el (debugger-setup-buffer): Bind
`print-escape-control-characters' to t.

* lisp/emacs-lisp/cl-print.el (cl-print-object): Don't print arglist
part of docstring.
* test/lisp/emacs-lisp/cl-print-tests.el (cl-print-tests-1): Update
test accordingly.

* lisp/emacs-lisp/debug.el (debugger-print-function): New defcustom,
defaulting to `cl-print'.
(debugger-insert-backtrace, debugger-setup-buffer): Use it instead of
`prin1'.
* etc/NEWS: Announce it.

* lisp/term/w32-win.el (w32--set-selection):
* lisp/select.el (xselect--encode-string): Replace NUL bytes with
"\0".
* doc/emacs/killing.texi: Document new behavior.
* etc/NEWS (times): Announce it.

* src/dispextern.h (struct it): New member lnum_pixel_width.
* src/xdisp.c (maybe_produce_line_number): Compute the width of
the line-number display in pixels.
(x_produce_glyphs): Use it->lnum_pixel_width instead of a kludge
that used it->lnum_width and made assumptions about pixel width.

* src/xdisp.c (hscroll_window_tree): Correct the X offset
calculations on TTY frames.
* src/term.c (produce_glyphs): Use it->lnum_pixel_width instead of
a kludge using it->lnum_width.

* src/xdisp.c (display_count_lines_visually): Introduce a
shortcut: if a relative line number was already calculated for
this iterator object, just increase it instead of the
expensive call to move_it_to.  Argument list changed to pass a
pointer to the iterator object.
(maybe_produce_line_number): Adjust for change in signature of
display_count_lines_visually.  Record the relative line number and
the corresponding byte position in the iterator object also in the
'visual' mode.

* src/xdisp.c (syms_of_xdisp)
<display-line-numbers-current-absolute>: New variable.
<display-line-numbers>: Doc fix.
(maybe_produce_line_number): Support nil value of
display-line-numbers-current-absolute.

* lisp/cus-start.el (standard): Add customization form for
display-line-numbers-current-absolute.

* etc/NEWS: Document recently introduced features.

* doc/emacs/custom.texi (Init Rebinding):
* doc/emacs/modes.texi (Minor Modes): Remove references to
linum-mode.
* doc/emacs/display.texi (Display Custom): Describe the
line-number display.
(Optional Mode Line): Fix the index entry to not conflict with
that in "Display Custom".
* doc/emacs/basic.texi (Position Info): Add cross-reference to
"Display Custom", for line-number display.

* src/xdisp.c (syms_of_xdisp): <display-line-numbers>: Mention
display-line-numbers-disable in the doc string.

* lisp/cus-start.el (standard): Fix lst change.

* doc/misc/tramp.texi (Android shell setup): Show default file name.
Structure section.

* doc/misc/trampver.texi:
* lisp/net/trampver.el: Change version to "2.3.2".

* test/lisp/net/tramp-tests.el (tramp-test-temporary-file-directory):
Offer home directory for mock method if it doesn't exist.

* src/xdisp.c (maybe_produce_line_number): Don't treat a zero
value of display-line-number-width as acceptable.
Handle the case of 'relative' with display-line-number-width
non-nil and smaller than the absolute line number requires.
Reported by Alex <agrambot@gmail.com>.

* lisp/faces.el (line-number, line-number-current-line): Warn
against using non-monospaced fonts.

… msg

(cl--random-state, cl--random-time): Move from cl-lib.el.
(cl-random): Use struct accessors.
(cl-random-state-p): Remove, provided by the defstruct.
(cl-make-random-state): Rewrite to struct constructor.

…tton.

* src/xdisp.c (display_count_lines_visually): Avoid very slow
redisplay when this function is invoked very far from point.
Reported by Alex <agrambot@gmail.com>.

src/nsterm.h (ns_select): Compiler doesn't like sigmask being const.
(ns_run_loop_break) [HAVE_PTHREAD]: New function.
src/nsterm.m (ns_select): Call thread_select from within ns_select.
(ns_run_loop_break) [HAVE_PTHREAD]: New function.
(ns_send_appdefined): Don't wait for main thread when sending app
defined event.
src/process.c (wait_reading_process_output): Call thread_select from
within ns_select.
src/systhread.c (sys_cond_broadcast) [HAVE_NS]: Break ns_select out of
its event loop using ns_run_loop_break.

* src/xdisp.c (x_produce_glyphs): Improve calculation of next tab
stop in hscrolled lines.  Prevent aborts in compute_line_metrics.

* lisp/help.el (help-read-key-sequence, help--analyze-key): New
functions, extracted from `describe-key' and `describe-key-briefly'.
(describe-key, describe-key-briefly): Use them.

* lisp/help.el (help-read-key-sequence): Add optional argument ot
ignore `mouse-movement' events.
(describe-key-briefly): Use it.
* doc/emacs/help.texi (Key Help):
* etc/NEWS: Mention that mouse movement is ignored.

…enerally

Single quotes, even in strings and comments, are now marked with the
"punctuation" syntax-table property, except where they are validly bounding a
character literal.  They are font locked with font-lock-warning-face except
where they are valid.  This is done in C, C++, ObjC, and Java Modes.

* lisp/progmodes/cc-defs.el (c-clear-char-property-with-value-on-char-function)
(c-clear-char-property-with-value-on-char, c-put-char-properties-on-char): New
functions/macros.

* lisp/progmodes/cc-fonts.el (c-font-lock-invalid-single-quotes): New function.
(c-basic-matchers-before): invoke c-font-lock-invalid-single-quotes.

* lisp/progmodes/cc-langs.el (c-get-state-before-change-functions): Remove
c-before-after-change-digit-quote from wherever it occurs.  Insert
c-parse-quotes-before-change into the entries for the languages where it is
needed.
(c-before-font-lock-functions): Remove c-before-after-change-digit-quote from
wherever it occurs.  Insert c-parse-quotes-after-change into the entries for
the languages which need it.
(c-has-quoted-numbers): New lang-defconst/-defvar.

* lisp/progmodes/cc-mode.el (c-before-after-change-digit-quote): Remove.
(c-maybe-quoted-number-head, c-maybe-quoted-number-tail)
(c-maybe-quoted-number): New defconsts.
(c-quoted-number-head-before-point, c-quoted-number-tail-after-point)
(c-quoted-number-straddling-point, c-parse-quotes-before-change)
(c-parse-quotes-after-change): New functions.

* doc/emacs/mule.texi (Bidirectional Editing):
* doc/lispref/display.texi (Bidirectional Display): Update the
bidi conformance text.

* src/emacs-module.h.in (emacs_funcall_exit): Lose trailing comma.
C++98 doesn't allow trailing commas in enumerations.

* src/emacs-module.h.in (emacs_module_init): Mark as noexcept if
possible.

* lisp/emacs-lisp/ert.el (ert-summarize-tests-batch-and-exit): Check
for existence of log files before reading.

* lisp/autorevert.el (auto-revert-find-file-function): New defun.
(find-file-hook): Use it.  (Bug#27502)
(auto-revert-remove-current-buffer): New defun.
(auto-revert-mode, auto-revert-buffers): Use it.

The reader now warns about some unescaped character literals, but
still allows them for compatibility reasons.  Slightly adapt the
manual to forbid them officially.

* doc/lispref/objects.texi (Basic Char Syntax): Document that
backslashes are now required before some characters.

These FIXMEs can't be addressed because they would require breaking
changes to the module API.  Furthermore, other module functions don't
return sentinel values as well, so users generally have to call
non_local_exit_check anyway.

* src/emacs-module.c (module_set_user_ptr)
(module_set_user_finalizer, module_vec_set, module_vec_size): Remove
FIXME comments.

* lisp/progmodes/cc-mode.el (c-quoted-number-head-before-point): Check a
search has succeded before using the match data.
(c-quoted-number-head-before-point, c-quoted-number-head-after-point):
Specify that the position of the extremity of the head or tail is in the
match data.

Substitute "`?`" inside command with the current file name.
See details in:
https://lists.gnu.org/archive/html/emacs-devel/2017-06/msg00618.html
* lisp/dired-aux.el (dired-quark-subst-regexp, dired-star-subst-regexp):
Mark as obsolete.
(dired-isolated-string-re): New defun.
(dired--star-or-qmark-p): New predicate.
(dired-do-shell-command): Use dired--star-or-qmark-p.  Substitute "`?`"
with the current file name.
* doc/emacs/dired.texi (Shell Commands in Dired): Update manual.
; * etc/NEWS: Mention it.

* lisp/dired-aux.el (dired-do-shell-command): Check that all
the wildcards are right.  Otherwise, ask for confirmation (Bug#27496).

* src/indent.c (Fvertical_motion): Help C-n/C-p estimate correctly
the width used up by line numbers by looking near the window-start
point.

Introduce a new user option 'electric-quote-context-sensitive'.  If
non-nil, have ' insert an opening quote if sensible.

Also introduce a new variable 'electric-quote-code-faces'.  Major
modes such as 'markdown-mode' can add faces to this list to treat text
as inline code and disable electric quoting.

* lisp/electric.el (electric-quote-context-sensitive): New user
option.
(electric-quote-code-faces): New variable.
(electric-quote-post-self-insert-function): Treat ' as ` if
desired and applicable; disable electric quoting for given faces.

* test/lisp/electric-tests.el (electric-quote-opening-single)
(electric-quote-closing-single, electric-quote-opening-double)
(electric-quote-closing-double)
(electric-quote-context-sensitive-backtick)
(electric-quote-context-sensitive-bob-single)
(electric-quote-context-sensitive-bob-double)
(electric-quote-context-sensitive-bol-single)
(electric-quote-context-sensitive-bol-double)
(electric-quote-context-sensitive-after-space-single)
(electric-quote-context-sensitive-after-space-double)
(electric-quote-context-sensitive-after-letter-single)
(electric-quote-context-sensitive-after-letter-double)
(electric-quote-context-sensitive-after-paren-single)
(electric-quote-context-sensitive-after-paren-double)
(electric-quote-markdown-in-text)
(electric-quote-markdown-in-code): New unit tests.

* lisp/emacs-lisp/debug.el (debugger-insert-backtrace):
* lisp/help-fns.el (describe-variable): No need to let-bind
`cl-print-compiled-button' to t anymore.

* lisp/net/eww.el (eww-search-words): Make eww-search-words prompt the
user for a search query if the region is inactive or if the region is
just whitespace.

Copyright-paperwork-exempt: yes

* lisp/net/shr.el (shr-url-at-point, shr-probe-url)
(shr-probe-and-copy-url, shr-maybe-probe-and-copy-url): New functions,
split out from `shr-copy-url'.
(shr-copy-url): Only copy the url, don't fetch it.
(shr-map): Bind 'w' and 'u' to `shr-maybe-probe-and-copy-url', which
has the same behavior as the old `shr-copy-url'.
* etc/NEWS: Announce changes.

* lisp/dired-aux.el (dired-do-shell-command): Replace just '?', '*'
and '`?' i.e., keep the whitespaces.
* test/lisp/dired-aux-tests.el (dired-test-bug27496): Add test.

* test/Makefile.in: Remove instrumentation for tramp-tests.

* test/lisp/net/tramp-tests.el (tramp-test36-asynchronous-requests):
Remove instrumentation.  Wrap with a timeout.  Give hydra
another timer value.  Set `default-directory' in timer.

* lisp/simple.el (line-number-at-pos): Add a second optional
  argument 'absolute'.
* test/list/simple-tests.el: Add tests for 'line-number-at-pos'.

* lisp/ansi-color.el (ansi-color-regexp, ansi-color-drop-regexp):
Remove.
(ansi-color-control-seq-regexp): New constant, matches all escape
sequences.
(ansi-color-filter-apply, ansi-color-apply)
(ansi-color-filter-region, ansi-color-apply-on-region): Use it instead
of matching color sequences separately from ignored sequences.
Differentiate color sequences simply by checking the last character.

* lisp/ansi-color.el (ansi-color-make-extent): Add
`ansi-color-freeze-overlay' to `insert-behind-hooks' as well.
* lisp/eshell/esh-mode.el (eshell-output-filter): Let-bind
`inhibit-modification-hooks' to nil while inserting the string.

* lisp/eshell/em-prompt.el (eshell-emit-prompt): Reset
`ansi-color-context-region'.

* test/lisp/filenotify-tests.el
(file-notify-test-remote-temporary-file-directory):
Declare default host for mock method.  Offer home directory
for mock method if it doesn't exist.
(file-notify-test09-watched-file-in-watched-dir-remote):
Remove, it doesn't work reliably.

* src/indent.c (Fvertical_motion): If need to start from
window-start, and it is outside of the accessible portion,
temporarily widen the buffer.  This avoids errors in evil-mode.
Reported by James Nguyen <james@jojojames.com>.

* lisp/progmodes/js.el (js--proper-indentation):
New customization option 'js-indent-align-list-continuation'.
Affects argument lists as well as arrays and object properties.
* test/manual/indent/js-indent-align-list-continuation-nil.js:
Test the change.

This is more flexible and doesn't couple electric quoting to font
locking.
Give that 'electric-quote-code-faces' was just introduced, remove it
without formal deprecation.

* lisp/electric.el (electric-quote-inhibit-functions): New abnormal
hook variable.
(electric-quote-post-self-insert-function): Run the hook.  Remove
use of old 'electric-quote-code-faces' variable.

* test/lisp/electric-tests.el (electric-quote-markdown-in-text)
(electric-quote-markdown-in-code): Adapt unit tests.

* test/lisp/electric-tests.el (electric-quote-markdown-in-code):
Remove now-unused text properties.

* src/xdisp.c (maybe_produce_line_number): Fix visual-mode display
of current line when line-number-current-line face was customized.
Reported by Filipe Silva <filipe.silva@gmail.com>.

When `comment-continue' has only blanks, `comment-padright' produces a
regexp that matches the empty string, so `uncomment-region-default'
will loop infinitely.
* lisp/newcomment.el (comment-padright): Only return a regexp if STR
has nonblank characters.

…g#27564)

* lisp/ffap.el (find-file-at-point): Mention `ffap-url-unwrap-local'
and `ffap-url-unwrap-remote'.

(c-parse-quotes-before-change, c-parse-quotes-after-change):
Remove unused vars.

(c-guess-view-reorder-offsets-alist-in-style): Remove redundantly bound
and computed variable `guessed-syntactic-symbols'.

(c-syntactic-context): Declare as dynbound.
(c-beginning-of-defun, c-end-of-defun): Remove unused var `start'.

(c-beginning-of-statement-1, c-guess-basic-syntax):
Remove unused var c-in-literal-cache.
(c-debug-sws-msg): Silence byte-compiler, even if we don't use the arg.
(c-append-to-state-cache): Remove unused var `bra+1s'.
(c-remove-stale-state-cache): Remove unused var `pps-point-state'.
(c-invalidate-state-cache-1): Remove unused var `pa'.
(c-forward-decl-or-cast-1): Change comments so they don't look like
outline headers.
(c-restricted-<>-arglists, c-parse-and-markup-<>-arglists):
Declare before first use.
(c-forward-decl-or-cast-1): Remove unused var `backup-kwd-sym'.
(c-backward-over-enum-header): Remove unused var `up-sexp-pos'.

(c-primary-expr-regexp): Remove unused vars ambiguous-prefix-ops and
unambiguous-prefix-ops.

... before first use

* lisp/net/tramp.el (tramp-file-name-handler): Don't trigger timers.

* test/lisp/net/tramp-tests.el
(tramp-test36-asynchronous-requests): Trigger timers.
(tramp-test37-recursive-load, tramp-test38-remote-load-path):
Set `default-directory' to a trustworthy value.

* lisp/progmodes/bug-reference.el (bug-reference-bug-regexp):
Autoload safety property.  (Bug#27481)