* lisp/emacs-lisp/seq.el (seq-intersection, seq-difference): New
functions.
* test/automated/seq-tests.el: Add tests for seq-intersection and
seq-difference.
* doc/lispref/sequences.texi: Add documentation for seq-intersection
and seq-difference.
* build-aux/git-hooks/commit-msg: Set LC_ALL=C, before running Awk
in unibyte environments. (Suggested by Paul Eggert
<eggert@cs.ucla.edu>.) Use a more accurate approximation to
[:print:], based on UTF-8 sequences of the unprintable characters.
* src/regex.c (ISPRINT): Call 'printablep' for multibyte characters.
(BIT_PRINT): New bit mask.
(re_wctype_to_bit): Return BIT_PRINT for RECC_PRINT.
* src/character.c (printablep): New function.
* src/character.h (printablep): Add prototype.
* lisp/emacs-lisp/rx.el (rx): Doc fix: document the new behavior
of 'print', 'alnum', and 'alphabetic'.
* doc/lispref/searching.texi (Char Classes): Document the new
behavior of [:print:].
* etc/NEWS: Mention the new behavior of [:print:].
* admin/unidata/unidata-gen.el (unidata-setup-list): Don't ignore
surrogates. This avoids assigning them the default
general-category of 'Cn', i.e. unassigned codepoints.
(unidata-get-name): Give surrogates synthetic names.
* src/print.c (print_object):
* src/window.c (sequence_number):
* src/window.h (struct window.sequence_number):
Don't assume window sequence number fits in int.
* src/window.c (window_select_count):
* src/window.h (struct window.use_time, window_select_count):
Don't assume window use time fits in int.
* src/window.c (Fsplit_window_internal):
Don't assume user-supplied integer, or sum, fits in int.
(Fset_window_configuration, count_windows, get_leaf_windows)
(save_window_save, Fcurrent_window_configuration):
Use ptrdiff_t for object counts.
(Fset_window_configuration): Omit unused local 'n'.
(count_windows): Simplify by writing in terms of get_leaf_windows.
(get_leaf_windows): Don't store through FLAT if it's null.
(extract_dimension): New static function.
(set_window_margins, set_window_fringes, set_window_scroll_bars):
Use it to avoid undefined behavior when converting user-supplied
integer to 'int'.
Fixes: debbugs:20290
* doc/emacs/files.texi (Comparing Files): Document the new default
value of `diff-switches'.
* doc/emacs/trouble.texi (Sending Patches): Document the preference
for unified diff format. Escape the plus in the suggested `-F' regexp
value.
* lisp/vc/diff.el (diff-switches): Change the default to `-u'.
Fixes: debbugs:20321
* lisp/cus-start.el (read-buffer-function): Don't advertize
iswitchb-read-buffer any more.
(iswitchb): Don't tweak this obsolete group any more.
Adding a string after a constructor's argument list will use
that string as the constructor function docstring. If this string
is absent but the struct itself was given a docstring, use that as
the constructor's docstring.
Fixes (bug#17284).
* lisp/emacs-lisp/cursor-sensor.el: New file.
* lisp/simple.el (pre-redisplay-functions): New hook.
(redisplay--pre-redisplay-functions): New function.
(pre-redisplay-function): Use it.
(minibuffer-avoid-prompt): Mark obsolete.
(redisplay--update-region-highlight): Adapt it to work as a function on
pre-redisplay-functions.
* lisp/cus-start.el (minibuffer-prompt-properties--setter): New fun.
(minibuffer-prompt-properties): Use it. Use cursor-intangible rather
than point-entered to make the prompt intangible.
* lisp/forms.el: Move `provide' calls to the end.
(forms-mode): Don't use `run-hooks' on a local var.
(forms--make-format, forms--make-format-elt-using-text-properties):
Use cursor-intangible rather than `intangible'.
(forms-mode): Enable cursor-intangible-mode.
* lisp/isearch.el (isearch-mode): Use defvar-local.
(cursor-sensor-inhibit): Declare.
(isearch-mode): Set cursor-sensor-inhibit.
(isearch-done): Set it back.
(isearch-open-overlay-temporary, isearch-open-necessary-overlays)
(isearch-close-unnecessary-overlays): Don't bother with `intangible'
any more.
* lisp/ses.el (ses-localvars): Remove `mode-line-process'.
(ses-sym-rowcol, ses-cell-value, ses-col-width, ses-col-printer):
Add Edebug spec.
(ses-goto-print, ses-print-cell, ses-adjust-print-width)
(ses-goto-data, ses-setup, ses-copy-region): Don't let-bind
inhibit-point-motion-hooks any more.
(ses--cell-at-pos, ses--curcell): New functions, extracted from
ses-set-curcell.
(ses-set-curcell): Use them.
(ses-print-cell, ses-setup): Use cursor-intangible instead of
`intangible'. Make sure cursor-intangible isn't sticky at BOB.
(ses-print-cell-new-width, ses-reprint-all, ses-recalculate-all):
Use ses--cell-at-pos.
(ses--mode-line-process, ses--cursor-sensor-highlight): New functions,
extracted from ses-command-hook. Make them work with multiple windows
displaying the same buffer.
(ses-mode): Use them via mode-line-process and pre-redisplay-functions.
Enable cursor-intangible-mode.
(ses-command-hook): Remove cell highlight and mode-line update code.
(ses-forward-or-insert, ses-copy-region-helper, ses-sort-column):
Update for new name of text-property holding the cell name.
(ses-rename-cell): Don't mess with mode-line-process.
* lisp/erc/erc-stamp.el (erc-add-timestamp): Use the new
cursor-sensor-functions property instead of point-entered.
(erc-insert-timestamp-right, erc-format-timestamp):
Use cursor-intangible rather than `intangible'.
(erc-munge-invisibility-spec): Use add-to-invisibility-spec and
remove-from-invisibility-spec. Enable cursor-intangible-mode and
cursor-sensor-mode if needed.
(erc-echo-timestamp): Adapt to calling convention of
cursor-sensor-functions.
(erc-insert-timestamp-right): Remove unused vars `current-window' and
`indent'.
* lisp/gnus/gnus-group.el (gnus-tmp-*): Declare.
(gnus-update-group-mark-positions): Remove unused `topic' var.
(gnus-group-insert-group-line): Remove unused var `header'.
(gnus-group--setup-tool-bar-update): New function.
(gnus-group-insert-group-line): Use it.
(gnus-group-update-eval-form): Declare local
dynamically-bound variables.
(gnus-group-unsubscribe-group): Use \` and \' to match string bounds.
* lisp/gnus/gnus-topic.el (gnus-topic-jump-to-topic)
(gnus-group-prepare-topics, gnus-topic-update-topic)
(gnus-topic-change-level, gnus-topic-catchup-articles)
(gnus-topic-remove-group, gnus-topic-delete, gnus-topic-indent):
Use inhibit-read-only.
(gnus-topic-prepare-topic): Use gnus-group--setup-tool-bar-update.
(gnus-topic-mode): Use define-minor-mode and derived-mode-p.
* lisp/textmodes/reftex-index.el (reftex-display-index):
Use cursor-intangible-mode if available.
(reftex-index-post-command-hook): Check cursor-intangible.
* lisp/textmodes/reftex-toc.el (reftex-toc):
Use cursor-intangible-mode if available.
(reftex-toc-recenter, reftex-toc-post-command-hook):
Check cursor-intangible.
* lisp/textmodes/sgml-mode.el: Use lexical-binding.
(sgml-tag): Use cursor-sensor-functions instead of point-entered.
(sgml-tags-invisible): Use with-silent-modifications and
inhibit-read-only. Enable cursor-sensor-mode.
(sgml-cursor-sensor): Rename from sgml-point-entered and adjust to
calling convention of cursor-sensor-functions.
* lisp/textmodes/table.el (table-cell-map-hook, table-load-hook)
(table-point-entered-cell-hook, table-point-left-cell-hook):
Don't autoload.
(table-cell-entered-state): Remove var.
(table--put-cell-point-entered/left-property)
(table--remove-cell-properties):
Use cursor-sensor-functions rather than point-entered/left.
(table--point-entered/left-cell-function): Merge
table--point-entered-cell-function and table--point-left-cell-function
and adjust to calling convention of cursor-sensor-functions.
* src/cmds.c (remove_excessive_undo_boundaries): New function,
extracted from Fself_insert_command.
(Fdelete_char, Fself_insert_command): Use it.
* src/fileio.c (Fmake_symbolic_link): Rename arg to `target'.
* src/keyboard.c (syms_of_keyboard): `top-level' shouldn't be special.
* lisp/term/xterm.el (gui-set-selection) <nil>: Move method definition to
top-level.
(terminal-init-xterm-activate-set-selection): Set a terminal property.
(xterm--set-selection): Use it instead of checking the value of
`terminal-initted'. Don't use string-bytes.
* lisp/term/xterm.el (xterm-max-cut-length): New var.
(xterm--set-selection, terminal-init-xterm-activate-set-selection): New funs.
(terminal-init-xterm, xterm--version-handler): Use them.
This might break upstream builds with older Emacsen
* lisp/gnus/message.el (message-mode): Use `set' and
`make-local-variable' instead of `setq-local'.
* Makefile.in (gen_origin): Fix to match what's in the master branch.
(no-ChangeLog, master-branch-is-current): New rules.
(change-history): Depend on them, to avoid similar future problems.
Escape the local-variables string to pacify Emacs when editing
Makefile.in.
(save-silently): New variable.
(files--message): New function.
(find-file-noselect, save-buffer, basic-save-buffer)
(basic-save-buffer-2, save-some-buffers, not-modified)
(append-to-file): Use them.
This fixes a bug where `A T' causes "random" articles to become marked
as read.
* lisp/gnus/gnus-sum.el (gnus-summary-refer-thread): Make sure
gnus-newsgroup-unreads remains sorted.
