* lisp/progmodes/project.el
(project-kill-buffers-display-buffer-list): Option to toggle
temporarily display of the list of buffers to kill when calling
project-kill-buffers
(project-kill-buffers): Handle
project-kill-buffers-display-buffer-list option (bug#52148).
* etc/NEWS: Mention the new variable.
* lisp/apropos.el (apropos-describe-plist): Bind the new
variable (bug#52053).
* lisp/button.el (button-describe): Bind the new variable.
* lisp/help-fns.el (describe-function, describe-variable)
(describe-face, describe-symbol, describe-syntax)
(describe-categories, describe-keymap, describe-mode)
(describe-widget): Bind the new variable.
* lisp/help-macro.el (make-help-screen): Bind the new variable.
* lisp/help.el (help-buffer-under-preparation): New variable
that is bound to t by commands that create a *Help* buffer.
(substitute-command-keys): Use the new variable:
help-link-key-to-documentation is supposed to have an effect
only "in *Help* buffers". Fixes bug#52053.
(view-lossage, describe-bindings, describe-key): Bind the new
variable.
* lisp/repeat.el (describe-repeat-maps): Bind the new variable.
* lisp/international/mule-cmds.el (describe-input-method)
(describe-language-environment): Bind the new variable.
* lisp/international/mule-diag.el (describe-character-set)
(describe-coding-system, describe-font, describe-fontset)
((list-fontsets): Bind the new variable.
* src/editfns.c (Ftranspose_regions): Remove an obsolete comment about
memmove, following up to commit 72af86bd8c of 8 Jul 2010 by Andreas
Schwab and commit 354f9f0fc6 of 23 Feb 2016 by Fredrik Bergroth,
both of which added calls to memmove.
* lisp/emacs-lisp/byte-run.el (byte-run--set-compiler-macro):
Don't warn when a compiler macro with lambda-form expander does not
use all the arguments of the function. Nobody expected any warning
since the arguments look like free variables inside the lambda form.
* test/infra/gitlab-ci.yml (variables): Set EMACS_TEST_TIMEOUT to 3600.
(.job-template, .test-template): Another approach to catch test
artifacts on emba.
* src/gtkutil.c (xg_is_menu_window): Determine whether wdesc
is a menu generated by a menu bar more reliably.
* src/xwidget.c (xwidget_button_1): Release all XI2 grabs on
click.
* lisp/mh-e/mh-comp.el (mh-forwarded-letter-subject): Collapse
two-line From headers into a single line (SF#266). Based on a
suggestion from Lester Buck (many thanks!).
Move `require`s out of `eval-when-compile` if the functions are called
at run-time.
Don't use #' to quote symbols (i.e. at those places where a lambda
expression couldn't be used).
Don't pre-load comp-test-45603.el and comp-test-pure.el any more.
(comp-deftest pure): Use `declare-function` after loading `comp-test-pure.el`
to silence the byte-compiler.
* src/xdisp.c (gui_produce_glyphs): Make sure character glyphs
don't trigger assertion violation due to negative ascent or
descent. This was reporte dto happen with some fonts used by the
xfont backend.
* lisp/pixel-scroll.el (pixel-point-at-unseen-line): Rewrite
to use `pixel-point-and-height-at-unseen-line'.
(pixel-point-and-height-at-unseen-line): New function.
(pixel-scroll-precision-scroll-up): Use existing logic
to determine unseen line position.
* test/lisp/time-stamp-tests.el (time-stamp-format-ignored-modifiers):
Additional testing with illegal formats, including "%".
(time-stamp-format-multiple-conversions): Add a test with "%%%".
* lisp/gnus/gnus-art.el (gnus-header): New face.
(gnus-header-from, gnus-header-subject, gnus-header-newsgroups)
(gnus-header-name, gnus-header-content): Inherit from this new face.
