Merge from origin/emacs-26

23527013c7 ; Rewrap doc string
4328d5f744 Correct Info link markup
2fb52abd9e Improve documentation of 'with-help-window'
ec08c62f03 Minor improvements in building.texi
663aafe1ff * lisp/textmodes/bibtex.el (bibtex-mark-entry): activate mark
05781b2e88 ; Spelling fix
aa40014ba3 * doc/emacs/building.texi (Starting GUD): Mention 'guiler'.
23072e468f Yet more proofreading of the Emacs manual
ba5a372540 * doc/emacs/rmail.texi: Fix broken link.
6b2210cc29 ; Spelling fix
067c8c4f5b Fix recently-added POP doc glitch
fb3dc0e8aa More proofreading of the Emacs manual
a776ce7be6 Fix typo in the Emacs manual's VC chapter
7f27d42f0b Pass json-readtable-error data as a list (bug#30489)
10bd3b3af8 Improve word motion docs (Bug#30815)
2b8507fbdc Replace "carriage-return" by "carriage return" in manuals
2616cd94f1 Minor copyedits in mule.texi
36a1d52814 Fix problems caused by fontconfig-2.13.0

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

diff --cc lisp/eshell/em-cmpl.el
Simple merge

diff --cc lisp/gnus/gnus-agent.el
Simple merge

diff --cc lisp/help.el
Simple merge

diff --cc lisp/simple.el
Simple merge

diff --cc lisp/textmodes/bibtex.el
Simple merge

diff --cc src/minibuf.c
Simple merge

diff --cc src/syntax.c
Simple merge

diff --cc src/xterm.c
Simple merge