Merge from origin/emacs-27

749e4b7e0b Reset xref-show-xrefs-function temporarily
3e6525d69f Don't show in 'view-lossage' responses to xterm feature qu...
9fbff9c35c ; * src/buffer.c: Fix comment describing 'buffer_defaults'.

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

diff --cc src/buffer.c
Simple merge