Merge from origin/emacs-28

a2c17e115e (origin/emacs-28) Merge branch 'emacs-28' of git.savannah....
fde56eeb76 Revert "Fix a typo in emacs-lisp-intro.texi"
4779d3ba19 * doc/lispref/functions.texi (Mapping Functions): Use #' w...
85ea3f7f47 Fix issue with interpreting ANSI codes in eshell
50f9436146 image-dired: Doc fix to better explain thumbnail generation
bb475e10b9 Clarify two image-dired docstrings
f5b4bb4a6f Fix flymake example backend conditions in the manual
0771d8939a * etc/PROBLEMS: Mention problems with regexp matcher.  (Bu...
ee579033b9 * test/lisp/repeat-tests.el: New file.
7385a7667f * lisp/tab-bar.el (tab-bar-move-repeat-map): Fix alias bin...
56caf1c9b8 Use restrictive umask when creating image-dired data
3b5de7f991 ; lisp/transient.el: Revert some misguided stylistic fixes.

diff --cc doc/lispintro/emacs-lisp-intro.texi
Simple merge

diff --cc doc/lispref/functions.texi
Simple merge

diff --cc lisp/eshell/esh-mode.el
Simple merge

diff --cc lisp/image-dired.el
Simple merge