* doc/misc/gnus.texi (Score Variables): In the example showing how to
use a list of functions for gnus-score-find-score-files-find-function,
return a list of strings from the lambda rather than trying to call
the string as a function (bug#45673).
* lisp/textmodes/fill.el (fill-region-as-paragraph): Try to
improve how line breaks are set on unbreakable text with a fill
prefix area that has spaces within (bug#45720).
* lisp/progmodes/prolog.el (prolog-font-lock-keywords): Work in
all modes derived from prolog-mode (bug#45747).
(mercury-mode): Set up variables based on the Prolog system (bug#45747).
Copyright-paperwork-exempt: yes
* lisp/emacs-lisp/lisp-mode.el (lisp-el-font-lock-keywords-2)
(lisp-cl-font-lock-keywords-2): Allow single-character symbol names.
* lisp/help-mode.el (help-xref-symbol-regexp): Also match symbol
names starting with symbol syntax (bug#6601, bug#24309).
* test/lisp/help-mode-tests.el (help-mode-tests-xref-button): Test
hyperlink creation for function names without symbol syntax.
* lisp/emacs-lisp/shortdoc.el (shortdoc--display-function): Use
describe-function as a fallback link when a function is not documented
in any Info manual. Also make the link respond to mouse-1, like the
rest of *Help* links, and add a proper help-echo property.
* lisp/help-fns.el (help-fns--mention-shortdoc-groups): Same link
improvement as described before, this time for the shortdoc groups
(bug#45750).
We first need to register the received process ID so that
'handle_child_signal' checks it. Otherwise we might never call
'waitpid' for these processes, risking deadlock.
* src/callproc.c (call_process):
* src/process.c (create_process): Don't unblock SIGCHLD before
registering the process ID to wait for.
* src/callproc.c (emacs_spawn): Accept a signal set from the caller.
Originally reported in https://github.com/joaotavora/eglot/issues/588
by Pankaj Jangid.
* lisp/progmodes/flymake.el (flymake--mode-line-counter): Count
diagnostics by severity level, not by type.
(Version): Bump to 1.1.1
Implement a limited form of tail-call optimization for the special
case of recursive functions defined with `cl-labels`. Only self-recursion
is optimized, no attempt is made to handle more complex cases such a mutual
recursion.
The main benefit is to reduce the use of the stack, tho in my limited
tests, this can also improve performance (about half of the way to
a hand-written `while` loop).
(cl--self-tco): New function.
(cl-labels): Use it.
* lisp/subr.el (letrec): Optimize single-binding corner case.
* test/lisp/emacs-lisp/cl-macs-tests.el (cl-macs--labels): Add tests
to check that TCO is working.
* test/lisp/subr-tests.el (subr--kbd): Merge test...
(subr-test-kbd): ...with this one. Fix thinko in my previous commit.
Thanks to Mattias Engdegård <mattiase@acm.org>.
* doc/lispref/windows.texi (Buffer Display Action Functions):
Document it.
* lisp/window.el (display-buffer--action-function-custom-type): Add.
(display-buffer): Mention it.
(display-buffer-use-least-recent-window): New function (bug#45688).
* src/window.c (Fwindow_bump_use_time): New function.
* lisp/net/socks.el (socks-open-connection): Fix incomplete patch
titled "Append incremental message segments in socks-filter," which
addressed chunk ordering but neglected to zero out the work area
following successful username/password authentication (bug#45162).
* lisp/textmodes/paragraphs.el (mark-paragraph): Revert
eb090f65ce (bug#45318). This restores
the behaviour from Emacs 27 -- further work is needed on this patch.
