master updated (ae348f3 -> 4939bea)

[Glenn Morris]

gm pushed a change to branch master.

      from  ae348f3   Adjust NEWS for revert of eshell fix on emacs-27 
(Bug#41370)
      adds  cddb007   ; * lisp/format-spec.el (format-spec): Fix typo.
      adds  0195809   Fix rare assertion violations in 'etags'
      adds  4737d0a   Fix Elisp manual entry for format-spec
      adds  e7a3ed8   Fix tab-bar-tab-name-ellipsis initialization
       new  dc78327   Merge from origin/emacs-27
      adds  478638e   Revert "Fix eshell-mode-map initialization"
       new  a134691   ; Merge from origin/emacs-27
      adds  df91c94   Fix access to single-byte characters in buffer text
      adds  0691d25   * etc/NEWS.25: Belatedly announce upcase-dwim and 
downcase-dwim.
      adds  9d7fd78   Make next-error behavior a bit more flexible
      adds  313dc04   ; Fix another format-spec typo in the Elisp manual
      adds  d0dd0e0   ; Fix more @var/@code mixups in Elisp manual
      adds  bd7b681   Tiny texinfo markup fixes
       new  4939bea   Merge from origin/emacs-27


Summary of changes:
 doc/lispref/edebug.texi        |    2 +-
 doc/lispref/files.texi         |    1 +
 doc/lispref/loading.texi       |    2 +-
 doc/lispref/os.texi            |    2 +-
 doc/lispref/text.texi          |   31 +-
 etc/NEWS.25                    |    2 +
 lib-src/etags.c                |    7 +-
 lisp/format-spec.el            |    2 +-
 lisp/simple.el                 |   38 +-
 lisp/tab-bar.el                |   11 +-
 src/cmds.c                     |    4 +-
 src/xdisp.c                    |    6 +-
 test/manual/etags/ETAGS.good_1 | 1472 ++++++++++++++++++++--------------------
 test/manual/etags/ETAGS.good_2 | 1472 ++++++++++++++++++++--------------------
 test/manual/etags/ETAGS.good_3 | 1472 ++++++++++++++++++++--------------------
 test/manual/etags/ETAGS.good_4 | 1472 ++++++++++++++++++++--------------------
 test/manual/etags/ETAGS.good_5 | 1472 ++++++++++++++++++++--------------------
 test/manual/etags/ETAGS.good_6 | 1472 ++++++++++++++++++++--------------------
 18 files changed, 4478 insertions(+), 4462 deletions(-)