Merge from origin/emacs-29

cd477bf07d8 Fix behavior of 'split-root-window-*' with 'C-u'
2e5d47f578a ; * doc/lispintro/emacs-lisp-intro.texi (copy-to-buffer):...
c46700deb0a Add more text to clarify the behavior of 'with-current-bu...
687c416ce9b Fix example in Emacs user manual
835902179cd ; Fix recent change in 'c-ts-mode'
169a5ff7524 ; Fix typo in Gnus manual (bug#67469).
30841c71a5d Mention Titankey in Tramp, which has passed the tests
dab7cc241f4 Fix c-ts-mode indentation after if/else (bug#67417)
f8d9dc26c78 Fix indentation for else clause in c-ts-mode (bug#67417)
bf0b0c9c73d Ensure that directory is expanded in package-vc-checkout
e551dd72f79 * etc/PROBLEMS: Add entry about pinentry with gpgsm.  (Bu...

diff --cc doc/emacs/custom.texi
Simple merge

diff --cc doc/misc/gnus.texi
Simple merge

diff --cc doc/misc/tramp.texi
Simple merge

diff --cc etc/PROBLEMS
Simple merge

diff --cc lisp/emacs-lisp/package-vc.el
Simple merge

diff --cc lisp/net/tramp.el
Simple merge

diff --cc lisp/progmodes/c-ts-mode.el
Simple merge

diff --cc lisp/window.el
Simple merge