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* lisp/faces.el (tty-find-type): Allow TERM=screen.xterm to find
term/screen.el (bug#45824).

* lisp/thingatpt.el (thing-at-point--beginning-of-symbol): Special
op that errors out when there's no symbols in the buffer before
point (bug#14234).
(symbol): Use it.

* src/alloc.c (garbage_collect): Postpone `unblock_input` a bit.
* src/window.c (window_parameter): Avoid `maybe_quit`.

* lisp/ibuf-ext.el (ibuffer-do-sort-by-filename/process): Use the
same function for sorting and for displaying the
filename/process (Bug#45800).

Copyright-paperwork-exempt: yes

This reverts commit 40a5df81.

This fails when a point is after a symbol, and there's
nothing else in the buffer.

* lisp/mail/rmailedit.el (rmail-cease-edit): Take an optional
parameter to avoid altering the message (bug#13327).
(rmail-abort-edit): Use it.

* lisp/thingatpt.el (thing-at-point--end-of-symbol): New function
(bug#14234).
(symbol): Use it instead of `forward-symbol', because the latter
will move to the end of the buffer even if there is no symbol
there.  Instead error out like `forward-sexp' and friends.

* doc/lispref/keymaps.texi (Modifying Menus): Make the second
example more regular (bug#14257).

* doc/lispref/markers.texi (The Mark): Mention that the mouse will
enable the `(only)' transient mark mode (bug#14945).

* lisp/progmodes/sh-script.el (sh-mode): Use
`auto-mode-interpreter-regexp' instead of open-coding the value
(bug#17158).

* test/lisp/replace-tests.el (replace-regexp-bug45973): Add test
(bug#45973).

Otherwise Emacs might hang when trying to read the pipe twice in a
row.  This is consistent with the other file descriptors we pass to
'pselect'.

* src/process.c (child_signal_init): Make read end of pipe
non-blocking.

* lisp/progmodes/project.el (project-async-shell-command)
(project-shell-command, project-compile):
Declare interactive-only (bug#45765).

* lisp/isearch.el (isearch-highlight):
* lisp/replace.el (replace-highlight):
Use integer-or-marker-p to check matches.

* lisp/calc/calccomp.el (math--big-bracket-alist)
(math--big-bracket, math--comp-bracket, math--comp-round-bracket):
New.
(math-compose-expr, math-compose-log, math-compose-log10)
(math-compose-choose, math-compose-integ, math-compose-sum)
(math-compose-prod): Use big brackets when available.

* lisp/version.el (emacs-major-version, emacs-minor-version):
Remove redundant version info already displayed by `C-h o`.

* doc/misc/tramp.texi (Remote shell setup): Clarifications for
`tramp-actions-before-shell' example.

* lisp/net/tramp-sh.el (tramp-sh-handle-insert-directory): Do not expand
FILENAME explicitely.
(tramp-open-shell): Add "-i" for interactive shells.

* test/lisp/net/tramp-tests.el (tramp-test07-file-exists-p)
(tramp-test14-delete-directory)
(tramp-test43-asynchronous-requests): Skip for MS windows.

(command-line): Don't re-evaluate the `custom-delayed-init-variables`
a second time after reading the `early-init.el` file.
(x-apply-session-resources): Set `blink-cursor-mode` rather than
`no-blinking-cursor`.

* lisp/frame.el (blink-cursor-start): Turn `blink-cursor-mode` off
if `blink-cursor-mode` was set to nil.
(blink-cursor-mode): Default to it being enabled regardless of
`window-system`.

* lisp/custom.el (custom-initialize-delay): Fox docstring now that
autoload.el preserves the `:initialize` info.

* lisp/vc/vc.el (vc-print-log-setup-buttons): Only show the "more"
buttons if we got more or equal to the number of entries we asked
for (bug#18959).

* lisp/calc/calc-lang.el (math-read-big-rec): Recognise √ since it may
be used in Big mode.

* lisp/calc/calc-embed.el (calc-embedded-set-modes): Prevent
the-language and the-display-just from being lexically bound here,
because they may be assigned using 'set'.

* lisp/gnus/message.el (message--syntax-propertize): Use the
correct Message mode syntax table to avoid having
`message-cite-prefix-regexp' trigger very heavy backtracing when
called from an abbrev context (which defines "_" as a word
constituent) (bug#45944).

* lisp/gnus/nntp.el (nntp-send-authinfo): Don't signal an
`nntp-authinfo-rejected' error, because that will stop Gnus
startup (bug#45855).  Instead signal an error that will be caught
higher up.

* test/Makefile.in (SUBDIRS): Add lib-src.

* test/README: Add predefined selectors.

* test/file-organization.org: Mention test/lib-src directory.

* lisp/facemenu.el (list-colors-print): Keeping
backward-compatibility, don't fail when passed a closure object as
CALLBACK.  (Bug#45831)

* test/lisp/wid-edit-tests.el (widget-test-color-match): New test.

* lisp/wid-edit.el (widget-color-match, widget-color-validate): New
functions.
(color): Use the new functions.  Base size on longest defined color
name, defaulting to the longest RGB hex string.

* etc/NEWS: Document the new face (bug#45840).
* lisp/progmodes/perl-mode.el (perl-non-scalar-variable): Define new
face.
(perl-font-lock-keywords-2): Apply 'perl-non-scalar-variable' face.

* lisp/help-fns.el (keymap-name-history): Define the history
variable (bug#45879).  This avoids problems in other completing
systems like Helm.

Copyright-paperwork-exempt: yes

* lisp/calc/calc.el (calc-trail-display): Actually make the trail
window dedicated (bug#45928).

* lisp/comint.el (comint-redirect-results-list-from-process):
Ensure forward progress (bug#45950).

* lisp/nxml/nxml-mode.el (nxml-char-ref-display-glyph-flag)
(nxml-sexp-element-flag, nxml-slash-auto-complete-flag)
(nxml-child-indent, nxml-attribute-indent)
(nxml-bind-meta-tab-to-complete-flag)
(nxml-prefer-utf-16-to-utf-8-flag)
(nxml-prefer-utf-16-little-to-big-endian-flag)
(nxml-default-buffer-file-coding-system)
(nxml-auto-insert-xml-declaration-flag): Add :safe to allow easier
cusomization (bug#45969).

This reverts commit 2644353c.

The src/fingerprint.c file is no longer generated, and the spelling of the obsolete function was correct.

* lisp/progmodes/xref.el (xref-show-definitions-buffer-at-bottom):
Make sure the new window is not too tall (bug#45945).

Update time-stamp-tests to use format-time-string to generate the date
words (month, day of week, AM/PM) instead of hard-coding English.  Now
the tests pass in locales other than "C" and US English.

Expand the test coverage of modifier characters.

Previously, all Gnus backends returned header information by writing
nov lines into the nntp-server-buffer, which was later parsed.  This
commit allows the backends to return their header information as a
list of already-parsed headers, though so far none of the backends
actually do that.  The agent, cache, cloud etc. now operate on parsed
headers rather than nov text, ie. they use gnus-fetch-headers instead
of gnus-retrieve-headers.

* lisp/gnus/gnus-sum.el (gnus-fetch-headers): Handle the case in which
gnus-retrieve-headers returns headers directly.
* lisp/gnus/nnvirtual.el (nnvirtual-retrieve-headers): Use
gnus-fetch-headers rather than gnus-retrieve-headers to get headers,
meaning we're operating on already-parsed headers.
(nnvirtual-convert-headers): Remove now-unnecessary function.
(nnvirtual-update-xref-header): Rewrite to operate on parsed header.
* lisp/gnus/gnus-cloud.el (gnus-cloud-available-chunks): Use
gnus-fetch-headers instead of gnus-retrieve-headers.
* lisp/gnus/gnus-cache.el (gnus-cache-retrieve-headers): Use
gnus-fetch-headers.
(gnus-cache-braid-nov, gnus-cache-braid-heads): Delete unnecessary
functions -- we now do this work on a list of parsed headers.
* lisp/gnus/gnus-agent.el (gnus-agent-retrieve-headers): Use
gnus-fetch-headers.
(gnus-agent-braid-nov): Remove unnecessary function.
(gnus-agent-fetch-headers): Use gnus-fetch-headers.

* lisp/ibuffer.el (ibuffer--abbreviate-file-name): New function.
(filename): Use it.
* lisp/ibuf-ext.el (ibuffer-mark-by-file-name-regexp): Prefer
read-regexp over read-string for reading regexps.  Determine file
name using ibuffer-buffer-file-name for consistency.  Abbreviate
file name using ibuffer-directory-abbrev-alist (bug#18859).