Merge from origin/emacs-28

cfaf681d3d ; * src/emacs.c (main): Add commentary about command-line ...
4d16a2f737 Fix pdf generation with Texinfo 6.7
a22c9a34bd Fix 'posn-at-point' near some overlays
d1aa552d11 ; * CONTRIBUTE: No cleanups on release branches, even in d...
588caf0b27 * lisp/repeat.el (repeat-post-hook): Add check symbolp rep...

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

diff --cc src/emacs.c
Simple merge

diff --cc src/xdisp.c
Simple merge